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import types
from typing import List, Optional, Tuple, Union
import torch
from transformers import CLIPTextModelWithProjection, CLIPTokenizer
from transformers.models.clip.modeling_clip import CLIPTextModelOutput
from diffusers.models import PriorTransformer
from diffusers.pipelines import DiffusionPipeline, StableDiffusionImageVariationPipeline
from diffusers.schedulers import UnCLIPScheduler
from diffusers.utils import logging
from diffusers.utils.torch_utils import randn_tensor
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
def _encode_image(self, image, device, num_images_per_prompt, do_classifier_free_guidance):
image = image.to(device=device)
image_embeddings = image # take image as image_embeddings
image_embeddings = image_embeddings.unsqueeze(1)
# duplicate image embeddings for each generation per prompt, using mps friendly method
bs_embed, seq_len, _ = image_embeddings.shape
image_embeddings = image_embeddings.repeat(1, num_images_per_prompt, 1)
image_embeddings = image_embeddings.view(bs_embed * num_images_per_prompt, seq_len, -1)
if do_classifier_free_guidance:
uncond_embeddings = torch.zeros_like(image_embeddings)
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
image_embeddings = torch.cat([uncond_embeddings, image_embeddings])
return image_embeddings
class StableUnCLIPPipeline(DiffusionPipeline):
def __init__(
self,
prior: PriorTransformer,
tokenizer: CLIPTokenizer,
text_encoder: CLIPTextModelWithProjection,
prior_scheduler: UnCLIPScheduler,
decoder_pipe_kwargs: Optional[dict] = None,
):
super().__init__()
decoder_pipe_kwargs = {"image_encoder": None} if decoder_pipe_kwargs is None else decoder_pipe_kwargs
decoder_pipe_kwargs["torch_dtype"] = decoder_pipe_kwargs.get("torch_dtype", None) or prior.dtype
self.decoder_pipe = StableDiffusionImageVariationPipeline.from_pretrained(
"lambdalabs/sd-image-variations-diffusers", **decoder_pipe_kwargs
)
# replace `_encode_image` method
self.decoder_pipe._encode_image = types.MethodType(_encode_image, self.decoder_pipe)
self.register_modules(
prior=prior,
tokenizer=tokenizer,
text_encoder=text_encoder,
prior_scheduler=prior_scheduler,
)
def _encode_prompt(
self,
prompt,
device,
num_images_per_prompt,
do_classifier_free_guidance,
text_model_output: Optional[Union[CLIPTextModelOutput, Tuple]] = None,
text_attention_mask: Optional[torch.Tensor] = None,
):
if text_model_output is None:
batch_size = len(prompt) if isinstance(prompt, list) else 1
# get prompt text embeddings
text_inputs = self.tokenizer(
prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
text_mask = text_inputs.attention_mask.bool().to(device)
if text_input_ids.shape[-1] > self.tokenizer.model_max_length:
removed_text = self.tokenizer.batch_decode(text_input_ids[:, self.tokenizer.model_max_length :])
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {self.tokenizer.model_max_length} tokens: {removed_text}"
)
text_input_ids = text_input_ids[:, : self.tokenizer.model_max_length]
text_encoder_output = self.text_encoder(text_input_ids.to(device))
text_embeddings = text_encoder_output.text_embeds
text_encoder_hidden_states = text_encoder_output.last_hidden_state
else:
batch_size = text_model_output[0].shape[0]
text_embeddings, text_encoder_hidden_states = text_model_output[0], text_model_output[1]
text_mask = text_attention_mask
text_embeddings = text_embeddings.repeat_interleave(num_images_per_prompt, dim=0)
text_encoder_hidden_states = text_encoder_hidden_states.repeat_interleave(num_images_per_prompt, dim=0)
text_mask = text_mask.repeat_interleave(num_images_per_prompt, dim=0)
if do_classifier_free_guidance:
uncond_tokens = [""] * batch_size
uncond_input = self.tokenizer(
uncond_tokens,
padding="max_length",
max_length=self.tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
uncond_text_mask = uncond_input.attention_mask.bool().to(device)
uncond_embeddings_text_encoder_output = self.text_encoder(uncond_input.input_ids.to(device))
uncond_embeddings = uncond_embeddings_text_encoder_output.text_embeds
uncond_text_encoder_hidden_states = uncond_embeddings_text_encoder_output.last_hidden_state
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = uncond_embeddings.shape[1]
uncond_embeddings = uncond_embeddings.repeat(1, num_images_per_prompt)
uncond_embeddings = uncond_embeddings.view(batch_size * num_images_per_prompt, seq_len)
seq_len = uncond_text_encoder_hidden_states.shape[1]
uncond_text_encoder_hidden_states = uncond_text_encoder_hidden_states.repeat(1, num_images_per_prompt, 1)
uncond_text_encoder_hidden_states = uncond_text_encoder_hidden_states.view(
batch_size * num_images_per_prompt, seq_len, -1
)
uncond_text_mask = uncond_text_mask.repeat_interleave(num_images_per_prompt, dim=0)
# done duplicates
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
text_embeddings = torch.cat([uncond_embeddings, text_embeddings])
text_encoder_hidden_states = torch.cat([uncond_text_encoder_hidden_states, text_encoder_hidden_states])
text_mask = torch.cat([uncond_text_mask, text_mask])
return text_embeddings, text_encoder_hidden_states, text_mask
@property
def _execution_device(self):
r"""
Returns the device on which the pipeline's models will be executed. After calling
`pipeline.enable_sequential_cpu_offload()` the execution device can only be inferred from Accelerate's module
hooks.
"""
if self.device != torch.device("meta") or not hasattr(self.prior, "_hf_hook"):
return self.device
for module in self.prior.modules():
if (
hasattr(module, "_hf_hook")
and hasattr(module._hf_hook, "execution_device")
and module._hf_hook.execution_device is not None
):
return torch.device(module._hf_hook.execution_device)
return self.device
def prepare_latents(self, shape, dtype, device, generator, latents, scheduler):
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
if latents.shape != shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {shape}")
latents = latents.to(device)
latents = latents * scheduler.init_noise_sigma
return latents
def to(self, torch_device: Optional[Union[str, torch.device]] = None):
self.decoder_pipe.to(torch_device)
super().to(torch_device)
@torch.no_grad()
def __call__(
self,
prompt: Optional[Union[str, List[str]]] = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_images_per_prompt: int = 1,
prior_num_inference_steps: int = 25,
generator: Optional[torch.Generator] = None,
prior_latents: Optional[torch.FloatTensor] = None,
text_model_output: Optional[Union[CLIPTextModelOutput, Tuple]] = None,
text_attention_mask: Optional[torch.Tensor] = None,
prior_guidance_scale: float = 4.0,
decoder_guidance_scale: float = 8.0,
decoder_num_inference_steps: int = 50,
decoder_num_images_per_prompt: Optional[int] = 1,
decoder_eta: float = 0.0,
output_type: Optional[str] = "pil",
return_dict: bool = True,
):
if prompt is not None:
if isinstance(prompt, str):
batch_size = 1
elif isinstance(prompt, list):
batch_size = len(prompt)
else:
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
else:
batch_size = text_model_output[0].shape[0]
device = self._execution_device
batch_size = batch_size * num_images_per_prompt
do_classifier_free_guidance = prior_guidance_scale > 1.0 or decoder_guidance_scale > 1.0
text_embeddings, text_encoder_hidden_states, text_mask = self._encode_prompt(
prompt, device, num_images_per_prompt, do_classifier_free_guidance, text_model_output, text_attention_mask
)
# prior
self.prior_scheduler.set_timesteps(prior_num_inference_steps, device=device)
prior_timesteps_tensor = self.prior_scheduler.timesteps
embedding_dim = self.prior.config.embedding_dim
prior_latents = self.prepare_latents(
(batch_size, embedding_dim),
text_embeddings.dtype,
device,
generator,
prior_latents,
self.prior_scheduler,
)
for i, t in enumerate(self.progress_bar(prior_timesteps_tensor)):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([prior_latents] * 2) if do_classifier_free_guidance else prior_latents
predicted_image_embedding = self.prior(
latent_model_input,
timestep=t,
proj_embedding=text_embeddings,
encoder_hidden_states=text_encoder_hidden_states,
attention_mask=text_mask,
).predicted_image_embedding
if do_classifier_free_guidance:
predicted_image_embedding_uncond, predicted_image_embedding_text = predicted_image_embedding.chunk(2)
predicted_image_embedding = predicted_image_embedding_uncond + prior_guidance_scale * (
predicted_image_embedding_text - predicted_image_embedding_uncond
)
if i + 1 == prior_timesteps_tensor.shape[0]:
prev_timestep = None
else:
prev_timestep = prior_timesteps_tensor[i + 1]
prior_latents = self.prior_scheduler.step(
predicted_image_embedding,
timestep=t,
sample=prior_latents,
generator=generator,
prev_timestep=prev_timestep,
).prev_sample
prior_latents = self.prior.post_process_latents(prior_latents)
image_embeddings = prior_latents
output = self.decoder_pipe(
image=image_embeddings,
height=height,
width=width,
num_inference_steps=decoder_num_inference_steps,
guidance_scale=decoder_guidance_scale,
generator=generator,
output_type=output_type,
return_dict=return_dict,
num_images_per_prompt=decoder_num_images_per_prompt,
eta=decoder_eta,
)
return output
| diffusers/examples/community/stable_unclip.py/0 | {
"file_path": "diffusers/examples/community/stable_unclip.py",
"repo_id": "diffusers",
"token_count": 5489
} | 112 |
# ControlNet training example
[Adding Conditional Control to Text-to-Image Diffusion Models](https://arxiv.org/abs/2302.05543) by Lvmin Zhang and Maneesh Agrawala.
This example is based on the [training example in the original ControlNet repository](https://github.com/lllyasviel/ControlNet/blob/main/docs/train.md). It trains a ControlNet to fill circles using a [small synthetic dataset](https://huggingface.co/datasets/fusing/fill50k).
## Installing the dependencies
Before running the scripts, make sure to install the library's training dependencies:
**Important**
To make sure you can successfully run the latest versions of the example scripts, we highly recommend **installing from source** and keeping the install up to date as we update the example scripts frequently and install some example-specific requirements. To do this, execute the following steps in a new virtual environment:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install -e .
```
Then cd in the example folder and run
```bash
pip install -r requirements.txt
```
And initialize an [🤗Accelerate](https://github.com/huggingface/accelerate/) environment with:
```bash
accelerate config
```
Or for a default accelerate configuration without answering questions about your environment
```bash
accelerate config default
```
Or if your environment doesn't support an interactive shell e.g. a notebook
```python
from accelerate.utils import write_basic_config
write_basic_config()
```
## Circle filling dataset
The original dataset is hosted in the [ControlNet repo](https://huggingface.co/lllyasviel/ControlNet/blob/main/training/fill50k.zip). We re-uploaded it to be compatible with `datasets` [here](https://huggingface.co/datasets/fusing/fill50k). Note that `datasets` handles dataloading within the training script.
Our training examples use [Stable Diffusion 1.5](https://huggingface.co/runwayml/stable-diffusion-v1-5) as the original set of ControlNet models were trained from it. However, ControlNet can be trained to augment any Stable Diffusion compatible model (such as [CompVis/stable-diffusion-v1-4](https://huggingface.co/CompVis/stable-diffusion-v1-4)) or [stabilityai/stable-diffusion-2-1](https://huggingface.co/stabilityai/stable-diffusion-2-1).
## Training
Our training examples use two test conditioning images. They can be downloaded by running
```sh
wget https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/controlnet_training/conditioning_image_1.png
wget https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/controlnet_training/conditioning_image_2.png
```
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=4
```
This default configuration requires ~38GB VRAM.
By default, the training script logs outputs to tensorboard. Pass `--report_to wandb` to use weights and
biases.
Gradient accumulation with a smaller batch size can be used to reduce training requirements to ~20 GB VRAM.
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=1 \
--gradient_accumulation_steps=4
```
## Training with multiple GPUs
`accelerate` allows for seamless multi-GPU training. Follow the instructions [here](https://huggingface.co/docs/accelerate/basic_tutorials/launch)
for running distributed training with `accelerate`. Here is an example command:
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch --mixed_precision="fp16" --multi_gpu train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=4 \
--mixed_precision="fp16" \
--tracker_project_name="controlnet-demo" \
--report_to=wandb
```
## Example results
#### After 300 steps with batch size 8
| | |
|-------------------|:-------------------------:|
| | red circle with blue background |
 |  |
| | cyan circle with brown floral background |
 |  |
#### After 6000 steps with batch size 8:
| | |
|-------------------|:-------------------------:|
| | red circle with blue background |
 |  |
| | cyan circle with brown floral background |
 |  |
## Training on a 16 GB GPU
Optimizations:
- Gradient checkpointing
- bitsandbyte's 8-bit optimizer
[bitandbytes install instructions](https://github.com/TimDettmers/bitsandbytes#requirements--installation).
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--gradient_checkpointing \
--use_8bit_adam
```
## Training on a 12 GB GPU
Optimizations:
- Gradient checkpointing
- bitsandbyte's 8-bit optimizer
- xformers
- set grads to none
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--gradient_checkpointing \
--use_8bit_adam \
--enable_xformers_memory_efficient_attention \
--set_grads_to_none
```
When using `enable_xformers_memory_efficient_attention`, please make sure to install `xformers` by `pip install xformers`.
## Training on an 8 GB GPU
We have not exhaustively tested DeepSpeed support for ControlNet. While the configuration does
save memory, we have not confirmed the configuration to train successfully. You will very likely
have to make changes to the config to have a successful training run.
Optimizations:
- Gradient checkpointing
- xformers
- set grads to none
- DeepSpeed stage 2 with parameter and optimizer offloading
- fp16 mixed precision
[DeepSpeed](https://www.deepspeed.ai/) can offload tensors from VRAM to either
CPU or NVME. This requires significantly more RAM (about 25 GB).
Use `accelerate config` to enable DeepSpeed stage 2.
The relevant parts of the resulting accelerate config file are
```yaml
compute_environment: LOCAL_MACHINE
deepspeed_config:
gradient_accumulation_steps: 4
offload_optimizer_device: cpu
offload_param_device: cpu
zero3_init_flag: false
zero_stage: 2
distributed_type: DEEPSPEED
```
See [documentation](https://huggingface.co/docs/accelerate/usage_guides/deepspeed) for more DeepSpeed configuration options.
Changing the default Adam optimizer to DeepSpeed's Adam
`deepspeed.ops.adam.DeepSpeedCPUAdam` gives a substantial speedup but
it requires CUDA toolchain with the same version as pytorch. 8-bit optimizer
does not seem to be compatible with DeepSpeed at the moment.
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="path to save model"
accelerate launch train_controlnet.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--gradient_checkpointing \
--enable_xformers_memory_efficient_attention \
--set_grads_to_none \
--mixed_precision fp16
```
## Performing inference with the trained ControlNet
The trained model can be run the same as the original ControlNet pipeline with the newly trained ControlNet.
Set `base_model_path` and `controlnet_path` to the values `--pretrained_model_name_or_path` and
`--output_dir` were respectively set to in the training script.
```py
from diffusers import StableDiffusionControlNetPipeline, ControlNetModel, UniPCMultistepScheduler
from diffusers.utils import load_image
import torch
base_model_path = "path to model"
controlnet_path = "path to controlnet"
controlnet = ControlNetModel.from_pretrained(controlnet_path, torch_dtype=torch.float16)
pipe = StableDiffusionControlNetPipeline.from_pretrained(
base_model_path, controlnet=controlnet, torch_dtype=torch.float16
)
# speed up diffusion process with faster scheduler and memory optimization
pipe.scheduler = UniPCMultistepScheduler.from_config(pipe.scheduler.config)
# remove following line if xformers is not installed or when using Torch 2.0.
pipe.enable_xformers_memory_efficient_attention()
# memory optimization.
pipe.enable_model_cpu_offload()
control_image = load_image("./conditioning_image_1.png")
prompt = "pale golden rod circle with old lace background"
# generate image
generator = torch.manual_seed(0)
image = pipe(
prompt, num_inference_steps=20, generator=generator, image=control_image
).images[0]
image.save("./output.png")
```
## Training with Flax/JAX
For faster training on TPUs and GPUs you can leverage the flax training example. Follow the instructions above to get the model and dataset before running the script.
### Running on Google Cloud TPU
See below for commands to set up a TPU VM(`--accelerator-type v4-8`). For more details about how to set up and use TPUs, refer to [Cloud docs for single VM setup](https://cloud.google.com/tpu/docs/run-calculation-jax).
First create a single TPUv4-8 VM and connect to it:
```
ZONE=us-central2-b
TPU_TYPE=v4-8
VM_NAME=hg_flax
gcloud alpha compute tpus tpu-vm create $VM_NAME \
--zone $ZONE \
--accelerator-type $TPU_TYPE \
--version tpu-vm-v4-base
gcloud alpha compute tpus tpu-vm ssh $VM_NAME --zone $ZONE -- \
```
When connected install JAX `0.4.5`:
```
pip install "jax[tpu]==0.4.5" -f https://storage.googleapis.com/jax-releases/libtpu_releases.html
```
To verify that JAX was correctly installed, you can run the following command:
```
import jax
jax.device_count()
```
This should display the number of TPU cores, which should be 4 on a TPUv4-8 VM.
Then install Diffusers and the library's training dependencies:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install .
```
Then cd in the example folder and run
```bash
pip install -U -r requirements_flax.txt
```
If you want to use Weights and Biases logging, you should also install `wandb` now
```bash
pip install wandb
```
Now let's downloading two conditioning images that we will use to run validation during the training in order to track our progress
```
wget https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/controlnet_training/conditioning_image_1.png
wget https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/controlnet_training/conditioning_image_2.png
```
We encourage you to store or share your model with the community. To use huggingface hub, please login to your Hugging Face account, or ([create one](https://huggingface.co/docs/diffusers/main/en/training/hf.co/join) if you don’t have one already):
```
huggingface-cli login
```
Make sure you have the `MODEL_DIR`,`OUTPUT_DIR` and `HUB_MODEL_ID` environment variables set. The `OUTPUT_DIR` and `HUB_MODEL_ID` variables specify where to save the model to on the Hub:
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="runs/fill-circle-{timestamp}"
export HUB_MODEL_ID="controlnet-fill-circle"
```
And finally start the training
```bash
python3 train_controlnet_flax.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=fusing/fill50k \
--resolution=512 \
--learning_rate=1e-5 \
--validation_image "./conditioning_image_1.png" "./conditioning_image_2.png" \
--validation_prompt "red circle with blue background" "cyan circle with brown floral background" \
--validation_steps=1000 \
--train_batch_size=2 \
--revision="non-ema" \
--from_pt \
--report_to="wandb" \
--tracker_project_name=$HUB_MODEL_ID \
--num_train_epochs=11 \
--push_to_hub \
--hub_model_id=$HUB_MODEL_ID
```
Since we passed the `--push_to_hub` flag, it will automatically create a model repo under your huggingface account based on `$HUB_MODEL_ID`. By the end of training, the final checkpoint will be automatically stored on the hub. You can find an example model repo [here](https://huggingface.co/YiYiXu/fill-circle-controlnet).
Our training script also provides limited support for streaming large datasets from the Hugging Face Hub. In order to enable streaming, one must also set `--max_train_samples`. Here is an example command (from [this blog article](https://huggingface.co/blog/train-your-controlnet)):
```bash
export MODEL_DIR="runwayml/stable-diffusion-v1-5"
export OUTPUT_DIR="runs/uncanny-faces-{timestamp}"
export HUB_MODEL_ID="controlnet-uncanny-faces"
python3 train_controlnet_flax.py \
--pretrained_model_name_or_path=$MODEL_DIR \
--output_dir=$OUTPUT_DIR \
--dataset_name=multimodalart/facesyntheticsspigacaptioned \
--streaming \
--conditioning_image_column=spiga_seg \
--image_column=image \
--caption_column=image_caption \
--resolution=512 \
--max_train_samples 100000 \
--learning_rate=1e-5 \
--train_batch_size=1 \
--revision="flax" \
--report_to="wandb" \
--tracker_project_name=$HUB_MODEL_ID
```
Note, however, that the performance of the TPUs might get bottlenecked as streaming with `datasets` is not optimized for images. For ensuring maximum throughput, we encourage you to explore the following options:
* [Webdataset](https://webdataset.github.io/webdataset/)
* [TorchData](https://github.com/pytorch/data)
* [TensorFlow Datasets](https://www.tensorflow.org/datasets/tfless_tfds)
When work with a larger dataset, you may need to run training process for a long time and it’s useful to save regular checkpoints during the process. You can use the following argument to enable intermediate checkpointing:
```bash
--checkpointing_steps=500
```
This will save the trained model in subfolders of your output_dir. Subfolder names is the number of steps performed so far; for example: a checkpoint saved after 500 training steps would be saved in a subfolder named 500
You can then start your training from this saved checkpoint with
```bash
--controlnet_model_name_or_path="./control_out/500"
```
We support training with the Min-SNR weighting strategy proposed in [Efficient Diffusion Training via Min-SNR Weighting Strategy](https://arxiv.org/abs/2303.09556) which helps to achieve faster convergence by rebalancing the loss. To use it, one needs to set the `--snr_gamma` argument. The recommended value when using it is `5.0`.
We also support gradient accumulation - it is a technique that lets you use a bigger batch size than your machine would normally be able to fit into memory. You can use `gradient_accumulation_steps` argument to set gradient accumulation steps. The ControlNet author recommends using gradient accumulation to achieve better convergence. Read more [here](https://github.com/lllyasviel/ControlNet/blob/main/docs/train.md#more-consideration-sudden-converge-phenomenon-and-gradient-accumulation).
You can **profile your code** with:
```bash
--profile_steps==5
```
Refer to the [JAX documentation on profiling](https://jax.readthedocs.io/en/latest/profiling.html). To inspect the profile trace, you'll have to install and start Tensorboard with the profile plugin:
```bash
pip install tensorflow tensorboard-plugin-profile
tensorboard --logdir runs/fill-circle-100steps-20230411_165612/
```
The profile can then be inspected at http://localhost:6006/#profile
Sometimes you'll get version conflicts (error messages like `Duplicate plugins for name projector`), which means that you have to uninstall and reinstall all versions of Tensorflow/Tensorboard (e.g. with `pip uninstall tensorflow tf-nightly tensorboard tb-nightly tensorboard-plugin-profile && pip install tf-nightly tbp-nightly tensorboard-plugin-profile`).
Note that the debugging functionality of the Tensorboard `profile` plugin is still under active development. Not all views are fully functional, and for example the `trace_viewer` cuts off events after 1M (which can result in all your device traces getting lost if you for example profile the compilation step by accident).
## Support for Stable Diffusion XL
We provide a training script for training a ControlNet with [Stable Diffusion XL](https://huggingface.co/papers/2307.01952). Please refer to [README_sdxl.md](./README_sdxl.md) for more details.
| diffusers/examples/controlnet/README.md/0 | {
"file_path": "diffusers/examples/controlnet/README.md",
"repo_id": "diffusers",
"token_count": 6041
} | 113 |
#!/usr/bin/env python
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Script to fine-tune Stable Diffusion for InstructPix2Pix."""
import argparse
import logging
import math
import os
import shutil
from pathlib import Path
import accelerate
import datasets
import numpy as np
import PIL
import requests
import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.utils.checkpoint
import transformers
from accelerate import Accelerator
from accelerate.logging import get_logger
from accelerate.utils import ProjectConfiguration, set_seed
from datasets import load_dataset
from huggingface_hub import create_repo, upload_folder
from packaging import version
from torchvision import transforms
from tqdm.auto import tqdm
from transformers import CLIPTextModel, CLIPTokenizer
import diffusers
from diffusers import AutoencoderKL, DDPMScheduler, StableDiffusionInstructPix2PixPipeline, UNet2DConditionModel
from diffusers.optimization import get_scheduler
from diffusers.training_utils import EMAModel
from diffusers.utils import check_min_version, deprecate, is_wandb_available
from diffusers.utils.import_utils import is_xformers_available
from diffusers.utils.torch_utils import is_compiled_module
# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
check_min_version("0.26.0.dev0")
logger = get_logger(__name__, log_level="INFO")
DATASET_NAME_MAPPING = {
"fusing/instructpix2pix-1000-samples": ("input_image", "edit_prompt", "edited_image"),
}
WANDB_TABLE_COL_NAMES = ["original_image", "edited_image", "edit_prompt"]
def parse_args():
parser = argparse.ArgumentParser(description="Simple example of a training script for InstructPix2Pix.")
parser.add_argument(
"--pretrained_model_name_or_path",
type=str,
default=None,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models.",
)
parser.add_argument(
"--revision",
type=str,
default=None,
required=False,
help="Revision of pretrained model identifier from huggingface.co/models.",
)
parser.add_argument(
"--variant",
type=str,
default=None,
help="Variant of the model files of the pretrained model identifier from huggingface.co/models, 'e.g.' fp16",
)
parser.add_argument(
"--dataset_name",
type=str,
default=None,
help=(
"The name of the Dataset (from the HuggingFace hub) to train on (could be your own, possibly private,"
" dataset). It can also be a path pointing to a local copy of a dataset in your filesystem,"
" or to a folder containing files that 🤗 Datasets can understand."
),
)
parser.add_argument(
"--dataset_config_name",
type=str,
default=None,
help="The config of the Dataset, leave as None if there's only one config.",
)
parser.add_argument(
"--train_data_dir",
type=str,
default=None,
help=(
"A folder containing the training data. Folder contents must follow the structure described in"
" https://huggingface.co/docs/datasets/image_dataset#imagefolder. In particular, a `metadata.jsonl` file"
" must exist to provide the captions for the images. Ignored if `dataset_name` is specified."
),
)
parser.add_argument(
"--original_image_column",
type=str,
default="input_image",
help="The column of the dataset containing the original image on which edits where made.",
)
parser.add_argument(
"--edited_image_column",
type=str,
default="edited_image",
help="The column of the dataset containing the edited image.",
)
parser.add_argument(
"--edit_prompt_column",
type=str,
default="edit_prompt",
help="The column of the dataset containing the edit instruction.",
)
parser.add_argument(
"--val_image_url",
type=str,
default=None,
help="URL to the original image that you would like to edit (used during inference for debugging purposes).",
)
parser.add_argument(
"--validation_prompt", type=str, default=None, help="A prompt that is sampled during training for inference."
)
parser.add_argument(
"--num_validation_images",
type=int,
default=4,
help="Number of images that should be generated during validation with `validation_prompt`.",
)
parser.add_argument(
"--validation_epochs",
type=int,
default=1,
help=(
"Run fine-tuning validation every X epochs. The validation process consists of running the prompt"
" `args.validation_prompt` multiple times: `args.num_validation_images`."
),
)
parser.add_argument(
"--max_train_samples",
type=int,
default=None,
help=(
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
),
)
parser.add_argument(
"--output_dir",
type=str,
default="instruct-pix2pix-model",
help="The output directory where the model predictions and checkpoints will be written.",
)
parser.add_argument(
"--cache_dir",
type=str,
default=None,
help="The directory where the downloaded models and datasets will be stored.",
)
parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
parser.add_argument(
"--resolution",
type=int,
default=256,
help=(
"The resolution for input images, all the images in the train/validation dataset will be resized to this"
" resolution"
),
)
parser.add_argument(
"--center_crop",
default=False,
action="store_true",
help=(
"Whether to center crop the input images to the resolution. If not set, the images will be randomly"
" cropped. The images will be resized to the resolution first before cropping."
),
)
parser.add_argument(
"--random_flip",
action="store_true",
help="whether to randomly flip images horizontally",
)
parser.add_argument(
"--train_batch_size", type=int, default=16, help="Batch size (per device) for the training dataloader."
)
parser.add_argument("--num_train_epochs", type=int, default=100)
parser.add_argument(
"--max_train_steps",
type=int,
default=None,
help="Total number of training steps to perform. If provided, overrides num_train_epochs.",
)
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.",
)
parser.add_argument(
"--gradient_checkpointing",
action="store_true",
help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.",
)
parser.add_argument(
"--learning_rate",
type=float,
default=1e-4,
help="Initial learning rate (after the potential warmup period) to use.",
)
parser.add_argument(
"--scale_lr",
action="store_true",
default=False,
help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
)
parser.add_argument(
"--lr_scheduler",
type=str,
default="constant",
help=(
'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
' "constant", "constant_with_warmup"]'
),
)
parser.add_argument(
"--lr_warmup_steps", type=int, default=500, help="Number of steps for the warmup in the lr scheduler."
)
parser.add_argument(
"--conditioning_dropout_prob",
type=float,
default=None,
help="Conditioning dropout probability. Drops out the conditionings (image and edit prompt) used in training InstructPix2Pix. See section 3.2.1 in the paper: https://arxiv.org/abs/2211.09800.",
)
parser.add_argument(
"--use_8bit_adam", action="store_true", help="Whether or not to use 8-bit Adam from bitsandbytes."
)
parser.add_argument(
"--allow_tf32",
action="store_true",
help=(
"Whether or not to allow TF32 on Ampere GPUs. Can be used to speed up training. For more information, see"
" https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices"
),
)
parser.add_argument("--use_ema", action="store_true", help="Whether to use EMA model.")
parser.add_argument(
"--non_ema_revision",
type=str,
default=None,
required=False,
help=(
"Revision of pretrained non-ema model identifier. Must be a branch, tag or git identifier of the local or"
" remote repository specified with --pretrained_model_name_or_path."
),
)
parser.add_argument(
"--dataloader_num_workers",
type=int,
default=0,
help=(
"Number of subprocesses to use for data loading. 0 means that the data will be loaded in the main process."
),
)
parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.")
parser.add_argument(
"--hub_model_id",
type=str,
default=None,
help="The name of the repository to keep in sync with the local `output_dir`.",
)
parser.add_argument(
"--logging_dir",
type=str,
default="logs",
help=(
"[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to"
" *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."
),
)
parser.add_argument(
"--mixed_precision",
type=str,
default=None,
choices=["no", "fp16", "bf16"],
help=(
"Whether to use mixed precision. Choose between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >="
" 1.10.and an Nvidia Ampere GPU. Default to the value of accelerate config of the current system or the"
" flag passed with the `accelerate.launch` command. Use this argument to override the accelerate config."
),
)
parser.add_argument(
"--report_to",
type=str,
default="tensorboard",
help=(
'The integration to report the results and logs to. Supported platforms are `"tensorboard"`'
' (default), `"wandb"` and `"comet_ml"`. Use `"all"` to report to all integrations.'
),
)
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
parser.add_argument(
"--checkpointing_steps",
type=int,
default=500,
help=(
"Save a checkpoint of the training state every X updates. These checkpoints are only suitable for resuming"
" training using `--resume_from_checkpoint`."
),
)
parser.add_argument(
"--checkpoints_total_limit",
type=int,
default=None,
help=("Max number of checkpoints to store."),
)
parser.add_argument(
"--resume_from_checkpoint",
type=str,
default=None,
help=(
"Whether training should be resumed from a previous checkpoint. Use a path saved by"
' `--checkpointing_steps`, or `"latest"` to automatically select the last available checkpoint.'
),
)
parser.add_argument(
"--enable_xformers_memory_efficient_attention", action="store_true", help="Whether or not to use xformers."
)
args = parser.parse_args()
env_local_rank = int(os.environ.get("LOCAL_RANK", -1))
if env_local_rank != -1 and env_local_rank != args.local_rank:
args.local_rank = env_local_rank
# Sanity checks
if args.dataset_name is None and args.train_data_dir is None:
raise ValueError("Need either a dataset name or a training folder.")
# default to using the same revision for the non-ema model if not specified
if args.non_ema_revision is None:
args.non_ema_revision = args.revision
return args
def convert_to_np(image, resolution):
image = image.convert("RGB").resize((resolution, resolution))
return np.array(image).transpose(2, 0, 1)
def download_image(url):
image = PIL.Image.open(requests.get(url, stream=True).raw)
image = PIL.ImageOps.exif_transpose(image)
image = image.convert("RGB")
return image
def main():
args = parse_args()
if args.non_ema_revision is not None:
deprecate(
"non_ema_revision!=None",
"0.15.0",
message=(
"Downloading 'non_ema' weights from revision branches of the Hub is deprecated. Please make sure to"
" use `--variant=non_ema` instead."
),
)
logging_dir = os.path.join(args.output_dir, args.logging_dir)
accelerator_project_config = ProjectConfiguration(project_dir=args.output_dir, logging_dir=logging_dir)
accelerator = Accelerator(
gradient_accumulation_steps=args.gradient_accumulation_steps,
mixed_precision=args.mixed_precision,
log_with=args.report_to,
project_config=accelerator_project_config,
)
generator = torch.Generator(device=accelerator.device).manual_seed(args.seed)
if args.report_to == "wandb":
if not is_wandb_available():
raise ImportError("Make sure to install wandb if you want to use it for logging during training.")
import wandb
# Make one log on every process with the configuration for debugging.
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO,
)
logger.info(accelerator.state, main_process_only=False)
if accelerator.is_local_main_process:
datasets.utils.logging.set_verbosity_warning()
transformers.utils.logging.set_verbosity_warning()
diffusers.utils.logging.set_verbosity_info()
else:
datasets.utils.logging.set_verbosity_error()
transformers.utils.logging.set_verbosity_error()
diffusers.utils.logging.set_verbosity_error()
# If passed along, set the training seed now.
if args.seed is not None:
set_seed(args.seed)
# Handle the repository creation
if accelerator.is_main_process:
if args.output_dir is not None:
os.makedirs(args.output_dir, exist_ok=True)
if args.push_to_hub:
repo_id = create_repo(
repo_id=args.hub_model_id or Path(args.output_dir).name, exist_ok=True, token=args.hub_token
).repo_id
# Load scheduler, tokenizer and models.
noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler")
tokenizer = CLIPTokenizer.from_pretrained(
args.pretrained_model_name_or_path, subfolder="tokenizer", revision=args.revision
)
text_encoder = CLIPTextModel.from_pretrained(
args.pretrained_model_name_or_path, subfolder="text_encoder", revision=args.revision, variant=args.variant
)
vae = AutoencoderKL.from_pretrained(
args.pretrained_model_name_or_path, subfolder="vae", revision=args.revision, variant=args.variant
)
unet = UNet2DConditionModel.from_pretrained(
args.pretrained_model_name_or_path, subfolder="unet", revision=args.non_ema_revision
)
# InstructPix2Pix uses an additional image for conditioning. To accommodate that,
# it uses 8 channels (instead of 4) in the first (conv) layer of the UNet. This UNet is
# then fine-tuned on the custom InstructPix2Pix dataset. This modified UNet is initialized
# from the pre-trained checkpoints. For the extra channels added to the first layer, they are
# initialized to zero.
logger.info("Initializing the InstructPix2Pix UNet from the pretrained UNet.")
in_channels = 8
out_channels = unet.conv_in.out_channels
unet.register_to_config(in_channels=in_channels)
with torch.no_grad():
new_conv_in = nn.Conv2d(
in_channels, out_channels, unet.conv_in.kernel_size, unet.conv_in.stride, unet.conv_in.padding
)
new_conv_in.weight.zero_()
new_conv_in.weight[:, :4, :, :].copy_(unet.conv_in.weight)
unet.conv_in = new_conv_in
# Freeze vae and text_encoder
vae.requires_grad_(False)
text_encoder.requires_grad_(False)
# Create EMA for the unet.
if args.use_ema:
ema_unet = EMAModel(unet.parameters(), model_cls=UNet2DConditionModel, model_config=unet.config)
if args.enable_xformers_memory_efficient_attention:
if is_xformers_available():
import xformers
xformers_version = version.parse(xformers.__version__)
if xformers_version == version.parse("0.0.16"):
logger.warn(
"xFormers 0.0.16 cannot be used for training in some GPUs. If you observe problems during training, please update xFormers to at least 0.0.17. See https://huggingface.co/docs/diffusers/main/en/optimization/xformers for more details."
)
unet.enable_xformers_memory_efficient_attention()
else:
raise ValueError("xformers is not available. Make sure it is installed correctly")
def unwrap_model(model):
model = accelerator.unwrap_model(model)
model = model._orig_mod if is_compiled_module(model) else model
return model
# `accelerate` 0.16.0 will have better support for customized saving
if version.parse(accelerate.__version__) >= version.parse("0.16.0"):
# create custom saving & loading hooks so that `accelerator.save_state(...)` serializes in a nice format
def save_model_hook(models, weights, output_dir):
if accelerator.is_main_process:
if args.use_ema:
ema_unet.save_pretrained(os.path.join(output_dir, "unet_ema"))
for i, model in enumerate(models):
model.save_pretrained(os.path.join(output_dir, "unet"))
# make sure to pop weight so that corresponding model is not saved again
weights.pop()
def load_model_hook(models, input_dir):
if args.use_ema:
load_model = EMAModel.from_pretrained(os.path.join(input_dir, "unet_ema"), UNet2DConditionModel)
ema_unet.load_state_dict(load_model.state_dict())
ema_unet.to(accelerator.device)
del load_model
for i in range(len(models)):
# pop models so that they are not loaded again
model = models.pop()
# load diffusers style into model
load_model = UNet2DConditionModel.from_pretrained(input_dir, subfolder="unet")
model.register_to_config(**load_model.config)
model.load_state_dict(load_model.state_dict())
del load_model
accelerator.register_save_state_pre_hook(save_model_hook)
accelerator.register_load_state_pre_hook(load_model_hook)
if args.gradient_checkpointing:
unet.enable_gradient_checkpointing()
# Enable TF32 for faster training on Ampere GPUs,
# cf https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices
if args.allow_tf32:
torch.backends.cuda.matmul.allow_tf32 = True
if args.scale_lr:
args.learning_rate = (
args.learning_rate * args.gradient_accumulation_steps * args.train_batch_size * accelerator.num_processes
)
# Initialize the optimizer
if args.use_8bit_adam:
try:
import bitsandbytes as bnb
except ImportError:
raise ImportError(
"Please install bitsandbytes to use 8-bit Adam. You can do so by running `pip install bitsandbytes`"
)
optimizer_cls = bnb.optim.AdamW8bit
else:
optimizer_cls = torch.optim.AdamW
optimizer = optimizer_cls(
unet.parameters(),
lr=args.learning_rate,
betas=(args.adam_beta1, args.adam_beta2),
weight_decay=args.adam_weight_decay,
eps=args.adam_epsilon,
)
# Get the datasets: you can either provide your own training and evaluation files (see below)
# or specify a Dataset from the hub (the dataset will be downloaded automatically from the datasets Hub).
# In distributed training, the load_dataset function guarantees that only one local process can concurrently
# download the dataset.
if args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
dataset = load_dataset(
args.dataset_name,
args.dataset_config_name,
cache_dir=args.cache_dir,
)
else:
data_files = {}
if args.train_data_dir is not None:
data_files["train"] = os.path.join(args.train_data_dir, "**")
dataset = load_dataset(
"imagefolder",
data_files=data_files,
cache_dir=args.cache_dir,
)
# See more about loading custom images at
# https://huggingface.co/docs/datasets/main/en/image_load#imagefolder
# Preprocessing the datasets.
# We need to tokenize inputs and targets.
column_names = dataset["train"].column_names
# 6. Get the column names for input/target.
dataset_columns = DATASET_NAME_MAPPING.get(args.dataset_name, None)
if args.original_image_column is None:
original_image_column = dataset_columns[0] if dataset_columns is not None else column_names[0]
else:
original_image_column = args.original_image_column
if original_image_column not in column_names:
raise ValueError(
f"--original_image_column' value '{args.original_image_column}' needs to be one of: {', '.join(column_names)}"
)
if args.edit_prompt_column is None:
edit_prompt_column = dataset_columns[1] if dataset_columns is not None else column_names[1]
else:
edit_prompt_column = args.edit_prompt_column
if edit_prompt_column not in column_names:
raise ValueError(
f"--edit_prompt_column' value '{args.edit_prompt_column}' needs to be one of: {', '.join(column_names)}"
)
if args.edited_image_column is None:
edited_image_column = dataset_columns[2] if dataset_columns is not None else column_names[2]
else:
edited_image_column = args.edited_image_column
if edited_image_column not in column_names:
raise ValueError(
f"--edited_image_column' value '{args.edited_image_column}' needs to be one of: {', '.join(column_names)}"
)
# Preprocessing the datasets.
# We need to tokenize input captions and transform the images.
def tokenize_captions(captions):
inputs = tokenizer(
captions, max_length=tokenizer.model_max_length, padding="max_length", truncation=True, return_tensors="pt"
)
return inputs.input_ids
# Preprocessing the datasets.
train_transforms = transforms.Compose(
[
transforms.CenterCrop(args.resolution) if args.center_crop else transforms.RandomCrop(args.resolution),
transforms.RandomHorizontalFlip() if args.random_flip else transforms.Lambda(lambda x: x),
]
)
def preprocess_images(examples):
original_images = np.concatenate(
[convert_to_np(image, args.resolution) for image in examples[original_image_column]]
)
edited_images = np.concatenate(
[convert_to_np(image, args.resolution) for image in examples[edited_image_column]]
)
# We need to ensure that the original and the edited images undergo the same
# augmentation transforms.
images = np.concatenate([original_images, edited_images])
images = torch.tensor(images)
images = 2 * (images / 255) - 1
return train_transforms(images)
def preprocess_train(examples):
# Preprocess images.
preprocessed_images = preprocess_images(examples)
# Since the original and edited images were concatenated before
# applying the transformations, we need to separate them and reshape
# them accordingly.
original_images, edited_images = preprocessed_images.chunk(2)
original_images = original_images.reshape(-1, 3, args.resolution, args.resolution)
edited_images = edited_images.reshape(-1, 3, args.resolution, args.resolution)
# Collate the preprocessed images into the `examples`.
examples["original_pixel_values"] = original_images
examples["edited_pixel_values"] = edited_images
# Preprocess the captions.
captions = list(examples[edit_prompt_column])
examples["input_ids"] = tokenize_captions(captions)
return examples
with accelerator.main_process_first():
if args.max_train_samples is not None:
dataset["train"] = dataset["train"].shuffle(seed=args.seed).select(range(args.max_train_samples))
# Set the training transforms
train_dataset = dataset["train"].with_transform(preprocess_train)
def collate_fn(examples):
original_pixel_values = torch.stack([example["original_pixel_values"] for example in examples])
original_pixel_values = original_pixel_values.to(memory_format=torch.contiguous_format).float()
edited_pixel_values = torch.stack([example["edited_pixel_values"] for example in examples])
edited_pixel_values = edited_pixel_values.to(memory_format=torch.contiguous_format).float()
input_ids = torch.stack([example["input_ids"] for example in examples])
return {
"original_pixel_values": original_pixel_values,
"edited_pixel_values": edited_pixel_values,
"input_ids": input_ids,
}
# DataLoaders creation:
train_dataloader = torch.utils.data.DataLoader(
train_dataset,
shuffle=True,
collate_fn=collate_fn,
batch_size=args.train_batch_size,
num_workers=args.dataloader_num_workers,
)
# Scheduler and math around the number of training steps.
overrode_max_train_steps = False
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if args.max_train_steps is None:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
overrode_max_train_steps = True
lr_scheduler = get_scheduler(
args.lr_scheduler,
optimizer=optimizer,
num_warmup_steps=args.lr_warmup_steps * accelerator.num_processes,
num_training_steps=args.max_train_steps * accelerator.num_processes,
)
# Prepare everything with our `accelerator`.
unet, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
unet, optimizer, train_dataloader, lr_scheduler
)
if args.use_ema:
ema_unet.to(accelerator.device)
# For mixed precision training we cast the text_encoder and vae weights to half-precision
# as these models are only used for inference, keeping weights in full precision is not required.
weight_dtype = torch.float32
if accelerator.mixed_precision == "fp16":
weight_dtype = torch.float16
elif accelerator.mixed_precision == "bf16":
weight_dtype = torch.bfloat16
# Move text_encode and vae to gpu and cast to weight_dtype
text_encoder.to(accelerator.device, dtype=weight_dtype)
vae.to(accelerator.device, dtype=weight_dtype)
# We need to recalculate our total training steps as the size of the training dataloader may have changed.
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if overrode_max_train_steps:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
# Afterwards we recalculate our number of training epochs
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
# We need to initialize the trackers we use, and also store our configuration.
# The trackers initializes automatically on the main process.
if accelerator.is_main_process:
accelerator.init_trackers("instruct-pix2pix", config=vars(args))
# Train!
total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
logger.info("***** Running training *****")
logger.info(f" Num examples = {len(train_dataset)}")
logger.info(f" Num Epochs = {args.num_train_epochs}")
logger.info(f" Instantaneous batch size per device = {args.train_batch_size}")
logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
logger.info(f" Gradient Accumulation steps = {args.gradient_accumulation_steps}")
logger.info(f" Total optimization steps = {args.max_train_steps}")
global_step = 0
first_epoch = 0
# Potentially load in the weights and states from a previous save
if args.resume_from_checkpoint:
if args.resume_from_checkpoint != "latest":
path = os.path.basename(args.resume_from_checkpoint)
else:
# Get the most recent checkpoint
dirs = os.listdir(args.output_dir)
dirs = [d for d in dirs if d.startswith("checkpoint")]
dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
path = dirs[-1] if len(dirs) > 0 else None
if path is None:
accelerator.print(
f"Checkpoint '{args.resume_from_checkpoint}' does not exist. Starting a new training run."
)
args.resume_from_checkpoint = None
else:
accelerator.print(f"Resuming from checkpoint {path}")
accelerator.load_state(os.path.join(args.output_dir, path))
global_step = int(path.split("-")[1])
resume_global_step = global_step * args.gradient_accumulation_steps
first_epoch = global_step // num_update_steps_per_epoch
resume_step = resume_global_step % (num_update_steps_per_epoch * args.gradient_accumulation_steps)
# Only show the progress bar once on each machine.
progress_bar = tqdm(range(global_step, args.max_train_steps), disable=not accelerator.is_local_main_process)
progress_bar.set_description("Steps")
for epoch in range(first_epoch, args.num_train_epochs):
unet.train()
train_loss = 0.0
for step, batch in enumerate(train_dataloader):
# Skip steps until we reach the resumed step
if args.resume_from_checkpoint and epoch == first_epoch and step < resume_step:
if step % args.gradient_accumulation_steps == 0:
progress_bar.update(1)
continue
with accelerator.accumulate(unet):
# We want to learn the denoising process w.r.t the edited images which
# are conditioned on the original image (which was edited) and the edit instruction.
# So, first, convert images to latent space.
latents = vae.encode(batch["edited_pixel_values"].to(weight_dtype)).latent_dist.sample()
latents = latents * vae.config.scaling_factor
# Sample noise that we'll add to the latents
noise = torch.randn_like(latents)
bsz = latents.shape[0]
# Sample a random timestep for each image
timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (bsz,), device=latents.device)
timesteps = timesteps.long()
# Add noise to the latents according to the noise magnitude at each timestep
# (this is the forward diffusion process)
noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
# Get the text embedding for conditioning.
encoder_hidden_states = text_encoder(batch["input_ids"])[0]
# Get the additional image embedding for conditioning.
# Instead of getting a diagonal Gaussian here, we simply take the mode.
original_image_embeds = vae.encode(batch["original_pixel_values"].to(weight_dtype)).latent_dist.mode()
# Conditioning dropout to support classifier-free guidance during inference. For more details
# check out the section 3.2.1 of the original paper https://arxiv.org/abs/2211.09800.
if args.conditioning_dropout_prob is not None:
random_p = torch.rand(bsz, device=latents.device, generator=generator)
# Sample masks for the edit prompts.
prompt_mask = random_p < 2 * args.conditioning_dropout_prob
prompt_mask = prompt_mask.reshape(bsz, 1, 1)
# Final text conditioning.
null_conditioning = text_encoder(tokenize_captions([""]).to(accelerator.device))[0]
encoder_hidden_states = torch.where(prompt_mask, null_conditioning, encoder_hidden_states)
# Sample masks for the original images.
image_mask_dtype = original_image_embeds.dtype
image_mask = 1 - (
(random_p >= args.conditioning_dropout_prob).to(image_mask_dtype)
* (random_p < 3 * args.conditioning_dropout_prob).to(image_mask_dtype)
)
image_mask = image_mask.reshape(bsz, 1, 1, 1)
# Final image conditioning.
original_image_embeds = image_mask * original_image_embeds
# Concatenate the `original_image_embeds` with the `noisy_latents`.
concatenated_noisy_latents = torch.cat([noisy_latents, original_image_embeds], dim=1)
# Get the target for loss depending on the prediction type
if noise_scheduler.config.prediction_type == "epsilon":
target = noise
elif noise_scheduler.config.prediction_type == "v_prediction":
target = noise_scheduler.get_velocity(latents, noise, timesteps)
else:
raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}")
# Predict the noise residual and compute loss
model_pred = unet(concatenated_noisy_latents, timesteps, encoder_hidden_states, return_dict=False)[0]
loss = F.mse_loss(model_pred.float(), target.float(), reduction="mean")
# Gather the losses across all processes for logging (if we use distributed training).
avg_loss = accelerator.gather(loss.repeat(args.train_batch_size)).mean()
train_loss += avg_loss.item() / args.gradient_accumulation_steps
# Backpropagate
accelerator.backward(loss)
if accelerator.sync_gradients:
accelerator.clip_grad_norm_(unet.parameters(), args.max_grad_norm)
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
# Checks if the accelerator has performed an optimization step behind the scenes
if accelerator.sync_gradients:
if args.use_ema:
ema_unet.step(unet.parameters())
progress_bar.update(1)
global_step += 1
accelerator.log({"train_loss": train_loss}, step=global_step)
train_loss = 0.0
if global_step % args.checkpointing_steps == 0:
if accelerator.is_main_process:
# _before_ saving state, check if this save would set us over the `checkpoints_total_limit`
if args.checkpoints_total_limit is not None:
checkpoints = os.listdir(args.output_dir)
checkpoints = [d for d in checkpoints if d.startswith("checkpoint")]
checkpoints = sorted(checkpoints, key=lambda x: int(x.split("-")[1]))
# before we save the new checkpoint, we need to have at _most_ `checkpoints_total_limit - 1` checkpoints
if len(checkpoints) >= args.checkpoints_total_limit:
num_to_remove = len(checkpoints) - args.checkpoints_total_limit + 1
removing_checkpoints = checkpoints[0:num_to_remove]
logger.info(
f"{len(checkpoints)} checkpoints already exist, removing {len(removing_checkpoints)} checkpoints"
)
logger.info(f"removing checkpoints: {', '.join(removing_checkpoints)}")
for removing_checkpoint in removing_checkpoints:
removing_checkpoint = os.path.join(args.output_dir, removing_checkpoint)
shutil.rmtree(removing_checkpoint)
save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}")
accelerator.save_state(save_path)
logger.info(f"Saved state to {save_path}")
logs = {"step_loss": loss.detach().item(), "lr": lr_scheduler.get_last_lr()[0]}
progress_bar.set_postfix(**logs)
if global_step >= args.max_train_steps:
break
if accelerator.is_main_process:
if (
(args.val_image_url is not None)
and (args.validation_prompt is not None)
and (epoch % args.validation_epochs == 0)
):
logger.info(
f"Running validation... \n Generating {args.num_validation_images} images with prompt:"
f" {args.validation_prompt}."
)
# create pipeline
if args.use_ema:
# Store the UNet parameters temporarily and load the EMA parameters to perform inference.
ema_unet.store(unet.parameters())
ema_unet.copy_to(unet.parameters())
# The models need unwrapping because for compatibility in distributed training mode.
pipeline = StableDiffusionInstructPix2PixPipeline.from_pretrained(
args.pretrained_model_name_or_path,
unet=unwrap_model(unet),
text_encoder=unwrap_model(text_encoder),
vae=unwrap_model(vae),
revision=args.revision,
variant=args.variant,
torch_dtype=weight_dtype,
)
pipeline = pipeline.to(accelerator.device)
pipeline.set_progress_bar_config(disable=True)
# run inference
original_image = download_image(args.val_image_url)
edited_images = []
with torch.autocast(
str(accelerator.device).replace(":0", ""), enabled=accelerator.mixed_precision == "fp16"
):
for _ in range(args.num_validation_images):
edited_images.append(
pipeline(
args.validation_prompt,
image=original_image,
num_inference_steps=20,
image_guidance_scale=1.5,
guidance_scale=7,
generator=generator,
).images[0]
)
for tracker in accelerator.trackers:
if tracker.name == "wandb":
wandb_table = wandb.Table(columns=WANDB_TABLE_COL_NAMES)
for edited_image in edited_images:
wandb_table.add_data(
wandb.Image(original_image), wandb.Image(edited_image), args.validation_prompt
)
tracker.log({"validation": wandb_table})
if args.use_ema:
# Switch back to the original UNet parameters.
ema_unet.restore(unet.parameters())
del pipeline
torch.cuda.empty_cache()
# Create the pipeline using the trained modules and save it.
accelerator.wait_for_everyone()
if accelerator.is_main_process:
unet = unwrap_model(unet)
if args.use_ema:
ema_unet.copy_to(unet.parameters())
pipeline = StableDiffusionInstructPix2PixPipeline.from_pretrained(
args.pretrained_model_name_or_path,
text_encoder=unwrap_model(text_encoder),
vae=unwrap_model(vae),
unet=unet,
revision=args.revision,
variant=args.variant,
)
pipeline.save_pretrained(args.output_dir)
if args.push_to_hub:
upload_folder(
repo_id=repo_id,
folder_path=args.output_dir,
commit_message="End of training",
ignore_patterns=["step_*", "epoch_*"],
)
if args.validation_prompt is not None:
edited_images = []
pipeline = pipeline.to(accelerator.device)
with torch.autocast(str(accelerator.device).replace(":0", "")):
for _ in range(args.num_validation_images):
edited_images.append(
pipeline(
args.validation_prompt,
image=original_image,
num_inference_steps=20,
image_guidance_scale=1.5,
guidance_scale=7,
generator=generator,
).images[0]
)
for tracker in accelerator.trackers:
if tracker.name == "wandb":
wandb_table = wandb.Table(columns=WANDB_TABLE_COL_NAMES)
for edited_image in edited_images:
wandb_table.add_data(
wandb.Image(original_image), wandb.Image(edited_image), args.validation_prompt
)
tracker.log({"test": wandb_table})
accelerator.end_training()
if __name__ == "__main__":
main()
| diffusers/examples/instruct_pix2pix/train_instruct_pix2pix.py/0 | {
"file_path": "diffusers/examples/instruct_pix2pix/train_instruct_pix2pix.py",
"repo_id": "diffusers",
"token_count": 19465
} | 114 |
import argparse
import itertools
import math
import os
import random
from pathlib import Path
import numpy as np
import torch
import torch.nn.functional as F
import torch.utils.checkpoint
from accelerate import Accelerator
from accelerate.logging import get_logger
from accelerate.utils import ProjectConfiguration, set_seed
from huggingface_hub import create_repo, upload_folder
from huggingface_hub.utils import insecure_hashlib
from PIL import Image, ImageDraw
from torch.utils.data import Dataset
from torchvision import transforms
from tqdm.auto import tqdm
from transformers import CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDPMScheduler,
StableDiffusionInpaintPipeline,
StableDiffusionPipeline,
UNet2DConditionModel,
)
from diffusers.optimization import get_scheduler
from diffusers.utils import check_min_version
# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
check_min_version("0.13.0.dev0")
logger = get_logger(__name__)
def prepare_mask_and_masked_image(image, mask):
image = np.array(image.convert("RGB"))
image = image[None].transpose(0, 3, 1, 2)
image = torch.from_numpy(image).to(dtype=torch.float32) / 127.5 - 1.0
mask = np.array(mask.convert("L"))
mask = mask.astype(np.float32) / 255.0
mask = mask[None, None]
mask[mask < 0.5] = 0
mask[mask >= 0.5] = 1
mask = torch.from_numpy(mask)
masked_image = image * (mask < 0.5)
return mask, masked_image
# generate random masks
def random_mask(im_shape, ratio=1, mask_full_image=False):
mask = Image.new("L", im_shape, 0)
draw = ImageDraw.Draw(mask)
size = (random.randint(0, int(im_shape[0] * ratio)), random.randint(0, int(im_shape[1] * ratio)))
# use this to always mask the whole image
if mask_full_image:
size = (int(im_shape[0] * ratio), int(im_shape[1] * ratio))
limits = (im_shape[0] - size[0] // 2, im_shape[1] - size[1] // 2)
center = (random.randint(size[0] // 2, limits[0]), random.randint(size[1] // 2, limits[1]))
draw_type = random.randint(0, 1)
if draw_type == 0 or mask_full_image:
draw.rectangle(
(center[0] - size[0] // 2, center[1] - size[1] // 2, center[0] + size[0] // 2, center[1] + size[1] // 2),
fill=255,
)
else:
draw.ellipse(
(center[0] - size[0] // 2, center[1] - size[1] // 2, center[0] + size[0] // 2, center[1] + size[1] // 2),
fill=255,
)
return mask
def parse_args():
parser = argparse.ArgumentParser(description="Simple example of a training script.")
parser.add_argument(
"--pretrained_model_name_or_path",
type=str,
default=None,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models.",
)
parser.add_argument(
"--tokenizer_name",
type=str,
default=None,
help="Pretrained tokenizer name or path if not the same as model_name",
)
parser.add_argument(
"--instance_data_dir",
type=str,
default=None,
required=True,
help="A folder containing the training data of instance images.",
)
parser.add_argument(
"--class_data_dir",
type=str,
default=None,
required=False,
help="A folder containing the training data of class images.",
)
parser.add_argument(
"--instance_prompt",
type=str,
default=None,
help="The prompt with identifier specifying the instance",
)
parser.add_argument(
"--class_prompt",
type=str,
default=None,
help="The prompt to specify images in the same class as provided instance images.",
)
parser.add_argument(
"--with_prior_preservation",
default=False,
action="store_true",
help="Flag to add prior preservation loss.",
)
parser.add_argument("--prior_loss_weight", type=float, default=1.0, help="The weight of prior preservation loss.")
parser.add_argument(
"--num_class_images",
type=int,
default=100,
help=(
"Minimal class images for prior preservation loss. If not have enough images, additional images will be"
" sampled with class_prompt."
),
)
parser.add_argument(
"--output_dir",
type=str,
default="text-inversion-model",
help="The output directory where the model predictions and checkpoints will be written.",
)
parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
parser.add_argument(
"--resolution",
type=int,
default=512,
help=(
"The resolution for input images, all the images in the train/validation dataset will be resized to this"
" resolution"
),
)
parser.add_argument(
"--center_crop",
default=False,
action="store_true",
help=(
"Whether to center crop the input images to the resolution. If not set, the images will be randomly"
" cropped. The images will be resized to the resolution first before cropping."
),
)
parser.add_argument("--train_text_encoder", action="store_true", help="Whether to train the text encoder")
parser.add_argument(
"--train_batch_size", type=int, default=4, help="Batch size (per device) for the training dataloader."
)
parser.add_argument(
"--sample_batch_size", type=int, default=4, help="Batch size (per device) for sampling images."
)
parser.add_argument("--num_train_epochs", type=int, default=1)
parser.add_argument(
"--max_train_steps",
type=int,
default=None,
help="Total number of training steps to perform. If provided, overrides num_train_epochs.",
)
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.",
)
parser.add_argument(
"--gradient_checkpointing",
action="store_true",
help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.",
)
parser.add_argument(
"--learning_rate",
type=float,
default=5e-6,
help="Initial learning rate (after the potential warmup period) to use.",
)
parser.add_argument(
"--scale_lr",
action="store_true",
default=False,
help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
)
parser.add_argument(
"--lr_scheduler",
type=str,
default="constant",
help=(
'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
' "constant", "constant_with_warmup"]'
),
)
parser.add_argument(
"--lr_warmup_steps", type=int, default=500, help="Number of steps for the warmup in the lr scheduler."
)
parser.add_argument(
"--use_8bit_adam", action="store_true", help="Whether or not to use 8-bit Adam from bitsandbytes."
)
parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.")
parser.add_argument(
"--hub_model_id",
type=str,
default=None,
help="The name of the repository to keep in sync with the local `output_dir`.",
)
parser.add_argument(
"--logging_dir",
type=str,
default="logs",
help=(
"[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to"
" *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."
),
)
parser.add_argument(
"--mixed_precision",
type=str,
default="no",
choices=["no", "fp16", "bf16"],
help=(
"Whether to use mixed precision. Choose"
"between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >= 1.10."
"and an Nvidia Ampere GPU."
),
)
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
parser.add_argument(
"--checkpointing_steps",
type=int,
default=500,
help=(
"Save a checkpoint of the training state every X updates. These checkpoints can be used both as final"
" checkpoints in case they are better than the last checkpoint and are suitable for resuming training"
" using `--resume_from_checkpoint`."
),
)
parser.add_argument(
"--checkpoints_total_limit",
type=int,
default=None,
help=(
"Max number of checkpoints to store. Passed as `total_limit` to the `Accelerator` `ProjectConfiguration`."
" See Accelerator::save_state https://huggingface.co/docs/accelerate/package_reference/accelerator#accelerate.Accelerator.save_state"
" for more docs"
),
)
parser.add_argument(
"--resume_from_checkpoint",
type=str,
default=None,
help=(
"Whether training should be resumed from a previous checkpoint. Use a path saved by"
' `--checkpointing_steps`, or `"latest"` to automatically select the last available checkpoint.'
),
)
args = parser.parse_args()
env_local_rank = int(os.environ.get("LOCAL_RANK", -1))
if env_local_rank != -1 and env_local_rank != args.local_rank:
args.local_rank = env_local_rank
if args.instance_data_dir is None:
raise ValueError("You must specify a train data directory.")
if args.with_prior_preservation:
if args.class_data_dir is None:
raise ValueError("You must specify a data directory for class images.")
if args.class_prompt is None:
raise ValueError("You must specify prompt for class images.")
return args
class DreamBoothDataset(Dataset):
"""
A dataset to prepare the instance and class images with the prompts for fine-tuning the model.
It pre-processes the images and the tokenizes prompts.
"""
def __init__(
self,
instance_data_root,
instance_prompt,
tokenizer,
class_data_root=None,
class_prompt=None,
size=512,
center_crop=False,
):
self.size = size
self.center_crop = center_crop
self.tokenizer = tokenizer
self.instance_data_root = Path(instance_data_root)
if not self.instance_data_root.exists():
raise ValueError("Instance images root doesn't exists.")
self.instance_images_path = list(Path(instance_data_root).iterdir())
self.num_instance_images = len(self.instance_images_path)
self.instance_prompt = instance_prompt
self._length = self.num_instance_images
if class_data_root is not None:
self.class_data_root = Path(class_data_root)
self.class_data_root.mkdir(parents=True, exist_ok=True)
self.class_images_path = list(self.class_data_root.iterdir())
self.num_class_images = len(self.class_images_path)
self._length = max(self.num_class_images, self.num_instance_images)
self.class_prompt = class_prompt
else:
self.class_data_root = None
self.image_transforms_resize_and_crop = transforms.Compose(
[
transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR),
transforms.CenterCrop(size) if center_crop else transforms.RandomCrop(size),
]
)
self.image_transforms = transforms.Compose(
[
transforms.ToTensor(),
transforms.Normalize([0.5], [0.5]),
]
)
def __len__(self):
return self._length
def __getitem__(self, index):
example = {}
instance_image = Image.open(self.instance_images_path[index % self.num_instance_images])
if not instance_image.mode == "RGB":
instance_image = instance_image.convert("RGB")
instance_image = self.image_transforms_resize_and_crop(instance_image)
example["PIL_images"] = instance_image
example["instance_images"] = self.image_transforms(instance_image)
example["instance_prompt_ids"] = self.tokenizer(
self.instance_prompt,
padding="do_not_pad",
truncation=True,
max_length=self.tokenizer.model_max_length,
).input_ids
if self.class_data_root:
class_image = Image.open(self.class_images_path[index % self.num_class_images])
if not class_image.mode == "RGB":
class_image = class_image.convert("RGB")
class_image = self.image_transforms_resize_and_crop(class_image)
example["class_images"] = self.image_transforms(class_image)
example["class_PIL_images"] = class_image
example["class_prompt_ids"] = self.tokenizer(
self.class_prompt,
padding="do_not_pad",
truncation=True,
max_length=self.tokenizer.model_max_length,
).input_ids
return example
class PromptDataset(Dataset):
"A simple dataset to prepare the prompts to generate class images on multiple GPUs."
def __init__(self, prompt, num_samples):
self.prompt = prompt
self.num_samples = num_samples
def __len__(self):
return self.num_samples
def __getitem__(self, index):
example = {}
example["prompt"] = self.prompt
example["index"] = index
return example
def main():
args = parse_args()
logging_dir = Path(args.output_dir, args.logging_dir)
project_config = ProjectConfiguration(
total_limit=args.checkpoints_total_limit, project_dir=args.output_dir, logging_dir=logging_dir
)
accelerator = Accelerator(
gradient_accumulation_steps=args.gradient_accumulation_steps,
mixed_precision=args.mixed_precision,
log_with="tensorboard",
project_config=project_config,
)
# Currently, it's not possible to do gradient accumulation when training two models with accelerate.accumulate
# This will be enabled soon in accelerate. For now, we don't allow gradient accumulation when training two models.
# TODO (patil-suraj): Remove this check when gradient accumulation with two models is enabled in accelerate.
if args.train_text_encoder and args.gradient_accumulation_steps > 1 and accelerator.num_processes > 1:
raise ValueError(
"Gradient accumulation is not supported when training the text encoder in distributed training. "
"Please set gradient_accumulation_steps to 1. This feature will be supported in the future."
)
if args.seed is not None:
set_seed(args.seed)
if args.with_prior_preservation:
class_images_dir = Path(args.class_data_dir)
if not class_images_dir.exists():
class_images_dir.mkdir(parents=True)
cur_class_images = len(list(class_images_dir.iterdir()))
if cur_class_images < args.num_class_images:
torch_dtype = torch.float16 if accelerator.device.type == "cuda" else torch.float32
pipeline = StableDiffusionInpaintPipeline.from_pretrained(
args.pretrained_model_name_or_path, torch_dtype=torch_dtype, safety_checker=None
)
pipeline.set_progress_bar_config(disable=True)
num_new_images = args.num_class_images - cur_class_images
logger.info(f"Number of class images to sample: {num_new_images}.")
sample_dataset = PromptDataset(args.class_prompt, num_new_images)
sample_dataloader = torch.utils.data.DataLoader(
sample_dataset, batch_size=args.sample_batch_size, num_workers=1
)
sample_dataloader = accelerator.prepare(sample_dataloader)
pipeline.to(accelerator.device)
transform_to_pil = transforms.ToPILImage()
for example in tqdm(
sample_dataloader, desc="Generating class images", disable=not accelerator.is_local_main_process
):
bsz = len(example["prompt"])
fake_images = torch.rand((3, args.resolution, args.resolution))
transform_to_pil = transforms.ToPILImage()
fake_pil_images = transform_to_pil(fake_images)
fake_mask = random_mask((args.resolution, args.resolution), ratio=1, mask_full_image=True)
images = pipeline(prompt=example["prompt"], mask_image=fake_mask, image=fake_pil_images).images
for i, image in enumerate(images):
hash_image = insecure_hashlib.sha1(image.tobytes()).hexdigest()
image_filename = class_images_dir / f"{example['index'][i] + cur_class_images}-{hash_image}.jpg"
image.save(image_filename)
del pipeline
if torch.cuda.is_available():
torch.cuda.empty_cache()
# Handle the repository creation
if accelerator.is_main_process:
if args.output_dir is not None:
os.makedirs(args.output_dir, exist_ok=True)
if args.push_to_hub:
repo_id = create_repo(
repo_id=args.hub_model_id or Path(args.output_dir).name, exist_ok=True, token=args.hub_token
).repo_id
# Load the tokenizer
if args.tokenizer_name:
tokenizer = CLIPTokenizer.from_pretrained(args.tokenizer_name)
elif args.pretrained_model_name_or_path:
tokenizer = CLIPTokenizer.from_pretrained(args.pretrained_model_name_or_path, subfolder="tokenizer")
# Load models and create wrapper for stable diffusion
text_encoder = CLIPTextModel.from_pretrained(args.pretrained_model_name_or_path, subfolder="text_encoder")
vae = AutoencoderKL.from_pretrained(args.pretrained_model_name_or_path, subfolder="vae")
unet = UNet2DConditionModel.from_pretrained(args.pretrained_model_name_or_path, subfolder="unet")
vae.requires_grad_(False)
if not args.train_text_encoder:
text_encoder.requires_grad_(False)
if args.gradient_checkpointing:
unet.enable_gradient_checkpointing()
if args.train_text_encoder:
text_encoder.gradient_checkpointing_enable()
if args.scale_lr:
args.learning_rate = (
args.learning_rate * args.gradient_accumulation_steps * args.train_batch_size * accelerator.num_processes
)
# Use 8-bit Adam for lower memory usage or to fine-tune the model in 16GB GPUs
if args.use_8bit_adam:
try:
import bitsandbytes as bnb
except ImportError:
raise ImportError(
"To use 8-bit Adam, please install the bitsandbytes library: `pip install bitsandbytes`."
)
optimizer_class = bnb.optim.AdamW8bit
else:
optimizer_class = torch.optim.AdamW
params_to_optimize = (
itertools.chain(unet.parameters(), text_encoder.parameters()) if args.train_text_encoder else unet.parameters()
)
optimizer = optimizer_class(
params_to_optimize,
lr=args.learning_rate,
betas=(args.adam_beta1, args.adam_beta2),
weight_decay=args.adam_weight_decay,
eps=args.adam_epsilon,
)
noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler")
train_dataset = DreamBoothDataset(
instance_data_root=args.instance_data_dir,
instance_prompt=args.instance_prompt,
class_data_root=args.class_data_dir if args.with_prior_preservation else None,
class_prompt=args.class_prompt,
tokenizer=tokenizer,
size=args.resolution,
center_crop=args.center_crop,
)
def collate_fn(examples):
input_ids = [example["instance_prompt_ids"] for example in examples]
pixel_values = [example["instance_images"] for example in examples]
# Concat class and instance examples for prior preservation.
# We do this to avoid doing two forward passes.
if args.with_prior_preservation:
input_ids += [example["class_prompt_ids"] for example in examples]
pixel_values += [example["class_images"] for example in examples]
pior_pil = [example["class_PIL_images"] for example in examples]
masks = []
masked_images = []
for example in examples:
pil_image = example["PIL_images"]
# generate a random mask
mask = random_mask(pil_image.size, 1, False)
# prepare mask and masked image
mask, masked_image = prepare_mask_and_masked_image(pil_image, mask)
masks.append(mask)
masked_images.append(masked_image)
if args.with_prior_preservation:
for pil_image in pior_pil:
# generate a random mask
mask = random_mask(pil_image.size, 1, False)
# prepare mask and masked image
mask, masked_image = prepare_mask_and_masked_image(pil_image, mask)
masks.append(mask)
masked_images.append(masked_image)
pixel_values = torch.stack(pixel_values)
pixel_values = pixel_values.to(memory_format=torch.contiguous_format).float()
input_ids = tokenizer.pad({"input_ids": input_ids}, padding=True, return_tensors="pt").input_ids
masks = torch.stack(masks)
masked_images = torch.stack(masked_images)
batch = {"input_ids": input_ids, "pixel_values": pixel_values, "masks": masks, "masked_images": masked_images}
return batch
train_dataloader = torch.utils.data.DataLoader(
train_dataset, batch_size=args.train_batch_size, shuffle=True, collate_fn=collate_fn
)
# Scheduler and math around the number of training steps.
overrode_max_train_steps = False
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if args.max_train_steps is None:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
overrode_max_train_steps = True
lr_scheduler = get_scheduler(
args.lr_scheduler,
optimizer=optimizer,
num_warmup_steps=args.lr_warmup_steps * accelerator.num_processes,
num_training_steps=args.max_train_steps * accelerator.num_processes,
)
if args.train_text_encoder:
unet, text_encoder, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
unet, text_encoder, optimizer, train_dataloader, lr_scheduler
)
else:
unet, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
unet, optimizer, train_dataloader, lr_scheduler
)
accelerator.register_for_checkpointing(lr_scheduler)
weight_dtype = torch.float32
if args.mixed_precision == "fp16":
weight_dtype = torch.float16
elif args.mixed_precision == "bf16":
weight_dtype = torch.bfloat16
# Move text_encode and vae to gpu.
# For mixed precision training we cast the text_encoder and vae weights to half-precision
# as these models are only used for inference, keeping weights in full precision is not required.
vae.to(accelerator.device, dtype=weight_dtype)
if not args.train_text_encoder:
text_encoder.to(accelerator.device, dtype=weight_dtype)
# We need to recalculate our total training steps as the size of the training dataloader may have changed.
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if overrode_max_train_steps:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
# Afterwards we recalculate our number of training epochs
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
# We need to initialize the trackers we use, and also store our configuration.
# The trackers initializes automatically on the main process.
if accelerator.is_main_process:
accelerator.init_trackers("dreambooth", config=vars(args))
# Train!
total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
logger.info("***** Running training *****")
logger.info(f" Num examples = {len(train_dataset)}")
logger.info(f" Num batches each epoch = {len(train_dataloader)}")
logger.info(f" Num Epochs = {args.num_train_epochs}")
logger.info(f" Instantaneous batch size per device = {args.train_batch_size}")
logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
logger.info(f" Gradient Accumulation steps = {args.gradient_accumulation_steps}")
logger.info(f" Total optimization steps = {args.max_train_steps}")
global_step = 0
first_epoch = 0
if args.resume_from_checkpoint:
if args.resume_from_checkpoint != "latest":
path = os.path.basename(args.resume_from_checkpoint)
else:
# Get the most recent checkpoint
dirs = os.listdir(args.output_dir)
dirs = [d for d in dirs if d.startswith("checkpoint")]
dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
path = dirs[-1] if len(dirs) > 0 else None
if path is None:
accelerator.print(
f"Checkpoint '{args.resume_from_checkpoint}' does not exist. Starting a new training run."
)
args.resume_from_checkpoint = None
else:
accelerator.print(f"Resuming from checkpoint {path}")
accelerator.load_state(os.path.join(args.output_dir, path))
global_step = int(path.split("-")[1])
resume_global_step = global_step * args.gradient_accumulation_steps
first_epoch = global_step // num_update_steps_per_epoch
resume_step = resume_global_step % (num_update_steps_per_epoch * args.gradient_accumulation_steps)
# Only show the progress bar once on each machine.
progress_bar = tqdm(range(global_step, args.max_train_steps), disable=not accelerator.is_local_main_process)
progress_bar.set_description("Steps")
for epoch in range(first_epoch, args.num_train_epochs):
unet.train()
for step, batch in enumerate(train_dataloader):
# Skip steps until we reach the resumed step
if args.resume_from_checkpoint and epoch == first_epoch and step < resume_step:
if step % args.gradient_accumulation_steps == 0:
progress_bar.update(1)
continue
with accelerator.accumulate(unet):
# Convert images to latent space
latents = vae.encode(batch["pixel_values"].to(dtype=weight_dtype)).latent_dist.sample()
latents = latents * vae.config.scaling_factor
# Convert masked images to latent space
masked_latents = vae.encode(
batch["masked_images"].reshape(batch["pixel_values"].shape).to(dtype=weight_dtype)
).latent_dist.sample()
masked_latents = masked_latents * vae.config.scaling_factor
masks = batch["masks"]
# resize the mask to latents shape as we concatenate the mask to the latents
mask = torch.stack(
[
torch.nn.functional.interpolate(mask, size=(args.resolution // 8, args.resolution // 8))
for mask in masks
]
)
mask = mask.reshape(-1, 1, args.resolution // 8, args.resolution // 8)
# Sample noise that we'll add to the latents
noise = torch.randn_like(latents)
bsz = latents.shape[0]
# Sample a random timestep for each image
timesteps = torch.randint(0, noise_scheduler.config.num_train_timesteps, (bsz,), device=latents.device)
timesteps = timesteps.long()
# Add noise to the latents according to the noise magnitude at each timestep
# (this is the forward diffusion process)
noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
# concatenate the noised latents with the mask and the masked latents
latent_model_input = torch.cat([noisy_latents, mask, masked_latents], dim=1)
# Get the text embedding for conditioning
encoder_hidden_states = text_encoder(batch["input_ids"])[0]
# Predict the noise residual
noise_pred = unet(latent_model_input, timesteps, encoder_hidden_states).sample
# Get the target for loss depending on the prediction type
if noise_scheduler.config.prediction_type == "epsilon":
target = noise
elif noise_scheduler.config.prediction_type == "v_prediction":
target = noise_scheduler.get_velocity(latents, noise, timesteps)
else:
raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}")
if args.with_prior_preservation:
# Chunk the noise and noise_pred into two parts and compute the loss on each part separately.
noise_pred, noise_pred_prior = torch.chunk(noise_pred, 2, dim=0)
target, target_prior = torch.chunk(target, 2, dim=0)
# Compute instance loss
loss = F.mse_loss(noise_pred.float(), target.float(), reduction="none").mean([1, 2, 3]).mean()
# Compute prior loss
prior_loss = F.mse_loss(noise_pred_prior.float(), target_prior.float(), reduction="mean")
# Add the prior loss to the instance loss.
loss = loss + args.prior_loss_weight * prior_loss
else:
loss = F.mse_loss(noise_pred.float(), target.float(), reduction="mean")
accelerator.backward(loss)
if accelerator.sync_gradients:
params_to_clip = (
itertools.chain(unet.parameters(), text_encoder.parameters())
if args.train_text_encoder
else unet.parameters()
)
accelerator.clip_grad_norm_(params_to_clip, args.max_grad_norm)
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
# Checks if the accelerator has performed an optimization step behind the scenes
if accelerator.sync_gradients:
progress_bar.update(1)
global_step += 1
if global_step % args.checkpointing_steps == 0:
if accelerator.is_main_process:
save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}")
accelerator.save_state(save_path)
logger.info(f"Saved state to {save_path}")
logs = {"loss": loss.detach().item(), "lr": lr_scheduler.get_last_lr()[0]}
progress_bar.set_postfix(**logs)
accelerator.log(logs, step=global_step)
if global_step >= args.max_train_steps:
break
accelerator.wait_for_everyone()
# Create the pipeline using using the trained modules and save it.
if accelerator.is_main_process:
pipeline = StableDiffusionPipeline.from_pretrained(
args.pretrained_model_name_or_path,
unet=accelerator.unwrap_model(unet),
text_encoder=accelerator.unwrap_model(text_encoder),
)
pipeline.save_pretrained(args.output_dir)
if args.push_to_hub:
upload_folder(
repo_id=repo_id,
folder_path=args.output_dir,
commit_message="End of training",
ignore_patterns=["step_*", "epoch_*"],
)
accelerator.end_training()
if __name__ == "__main__":
main()
| diffusers/examples/research_projects/dreambooth_inpaint/train_dreambooth_inpaint.py/0 | {
"file_path": "diffusers/examples/research_projects/dreambooth_inpaint/train_dreambooth_inpaint.py",
"repo_id": "diffusers",
"token_count": 14370
} | 115 |
# Multi Subject DreamBooth training
[DreamBooth](https://arxiv.org/abs/2208.12242) is a method to personalize text2image models like stable diffusion given just a few(3~5) images of a subject.
This `train_multi_subject_dreambooth.py` script shows how to implement the training procedure for one or more subjects and adapt it for stable diffusion. Note that this code is based off of the `examples/dreambooth/train_dreambooth.py` script as of 01/06/2022.
This script was added by @kopsahlong, and is not actively maintained. However, if you come across anything that could use fixing, feel free to open an issue and tag @kopsahlong.
## Running locally with PyTorch
### Installing the dependencies
Before running the script, make sure to install the library's training dependencies:
To start, execute the following steps in a new virtual environment:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install -e .
```
Then cd into the folder `diffusers/examples/research_projects/multi_subject_dreambooth` and run the following:
```bash
pip install -r requirements.txt
```
And initialize an [🤗Accelerate](https://github.com/huggingface/accelerate/) environment with:
```bash
accelerate config
```
Or for a default accelerate configuration without answering questions about your environment
```bash
accelerate config default
```
Or if your environment doesn't support an interactive shell e.g. a notebook
```python
from accelerate.utils import write_basic_config
write_basic_config()
```
### Multi Subject Training Example
In order to have your model learn multiple concepts at once, we simply add in the additional data directories and prompts to our `instance_data_dir` and `instance_prompt` (as well as `class_data_dir` and `class_prompt` if `--with_prior_preservation` is specified) as one comma separated string.
See an example with 2 subjects below, which learns a model for one dog subject and one human subject:
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export OUTPUT_DIR="path-to-save-model"
# Subject 1
export INSTANCE_DIR_1="path-to-instance-images-concept-1"
export INSTANCE_PROMPT_1="a photo of a sks dog"
export CLASS_DIR_1="path-to-class-images-dog"
export CLASS_PROMPT_1="a photo of a dog"
# Subject 2
export INSTANCE_DIR_2="path-to-instance-images-concept-2"
export INSTANCE_PROMPT_2="a photo of a t@y person"
export CLASS_DIR_2="path-to-class-images-person"
export CLASS_PROMPT_2="a photo of a person"
accelerate launch train_multi_subject_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir="$INSTANCE_DIR_1,$INSTANCE_DIR_2" \
--output_dir=$OUTPUT_DIR \
--train_text_encoder \
--instance_prompt="$INSTANCE_PROMPT_1,$INSTANCE_PROMPT_2" \
--with_prior_preservation \
--prior_loss_weight=1.0 \
--class_data_dir="$CLASS_DIR_1,$CLASS_DIR_2" \
--class_prompt="$CLASS_PROMPT_1,$CLASS_PROMPT_2"\
--num_class_images=50 \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=1 \
--learning_rate=1e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--max_train_steps=1500
```
This example shows training for 2 subjects, but please note that the model can be trained on any number of new concepts. This can be done by continuing to add in the corresponding directories and prompts to the corresponding comma separated string.
Note also that in this script, `sks` and `t@y` were used as tokens to learn the new subjects ([this thread](https://github.com/XavierXiao/Dreambooth-Stable-Diffusion/issues/71) inspired the use of `t@y` as our second identifier). However, there may be better rare tokens to experiment with, and results also seemed to be good when more intuitive words are used.
**Important**: New parameters are added to the script, making possible to validate the progress of the training by
generating images at specified steps. Taking also into account that a comma separated list in a text field for a prompt
it's never a good idea (simply because it is very common in prompts to have them as part of a regular text) we
introduce the `concept_list` parameter: allowing to specify a json-like file where you can define the different
configuration for each subject that you want to train.
An example of how to generate the file:
```python
import json
# here we are using parameters for prior-preservation and validation as well.
concepts_list = [
{
"instance_prompt": "drawing of a t@y meme",
"class_prompt": "drawing of a meme",
"instance_data_dir": "/some_folder/meme_toy",
"class_data_dir": "/data/meme",
"validation_prompt": "drawing of a t@y meme about football in Uruguay",
"validation_negative_prompt": "black and white"
},
{
"instance_prompt": "drawing of a sks sir",
"class_prompt": "drawing of a sir",
"instance_data_dir": "/some_other_folder/sir_sks",
"class_data_dir": "/data/sir",
"validation_prompt": "drawing of a sks sir with the Uruguayan sun in his chest",
"validation_negative_prompt": "an old man",
"validation_guidance_scale": 20,
"validation_number_images": 3,
"validation_inference_steps": 10
}
]
with open("concepts_list.json", "w") as f:
json.dump(concepts_list, f, indent=4)
```
And then just point to the file when executing the script:
```bash
# exports...
accelerate launch train_multi_subject_dreambooth.py \
# more parameters...
--concepts_list="concepts_list.json"
```
You can use the helper from the script to get a better sense of each parameter.
### Inference
Once you have trained a model using above command, the inference can be done simply using the `StableDiffusionPipeline`. Make sure to include the `identifier`(e.g. sks in above example) in your prompt.
```python
from diffusers import StableDiffusionPipeline
import torch
model_id = "path-to-your-trained-model"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
prompt = "A photo of a t@y person petting an sks dog"
image = pipe(prompt, num_inference_steps=200, guidance_scale=7.5).images[0]
image.save("person-petting-dog.png")
```
### Inference from a training checkpoint
You can also perform inference from one of the checkpoints saved during the training process, if you used the `--checkpointing_steps` argument. Please, refer to [the documentation](https://huggingface.co/docs/diffusers/main/en/training/dreambooth#performing-inference-using-a-saved-checkpoint) to see how to do it.
## Additional Dreambooth documentation
Because the `train_multi_subject_dreambooth.py` script here was forked from an original version of `train_dreambooth.py` in the `examples/dreambooth` folder, I've included the original applicable training documentation for single subject examples below.
This should explain how to play with training variables such as prior preservation, fine tuning the text encoder, etc. which is still applicable to our multi subject training code. Note also that the examples below, which are single subject examples, also work with `train_multi_subject_dreambooth.py`, as this script supports 1 (or more) subjects.
### Single subject dog toy example
Let's get our dataset. Download images from [here](https://drive.google.com/drive/folders/1BO_dyz-p65qhBRRMRA4TbZ8qW4rB99JZ) and save them in a directory. This will be our training data.
And launch the training using
**___Note: Change the `resolution` to 768 if you are using the [stable-diffusion-2](https://huggingface.co/stabilityai/stable-diffusion-2) 768x768 model.___**
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export INSTANCE_DIR="path-to-instance-images"
export OUTPUT_DIR="path-to-save-model"
accelerate launch train_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir=$INSTANCE_DIR \
--output_dir=$OUTPUT_DIR \
--instance_prompt="a photo of sks dog" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=1 \
--learning_rate=5e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--max_train_steps=400
```
### Training with prior-preservation loss
Prior-preservation is used to avoid overfitting and language-drift. Refer to the paper to learn more about it. For prior-preservation we first generate images using the model with a class prompt and then use those during training along with our data.
According to the paper, it's recommended to generate `num_epochs * num_samples` images for prior-preservation. 200-300 works well for most cases. The `num_class_images` flag sets the number of images to generate with the class prompt. You can place existing images in `class_data_dir`, and the training script will generate any additional images so that `num_class_images` are present in `class_data_dir` during training time.
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export INSTANCE_DIR="path-to-instance-images"
export CLASS_DIR="path-to-class-images"
export OUTPUT_DIR="path-to-save-model"
accelerate launch train_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir=$INSTANCE_DIR \
--class_data_dir=$CLASS_DIR \
--output_dir=$OUTPUT_DIR \
--with_prior_preservation --prior_loss_weight=1.0 \
--instance_prompt="a photo of sks dog" \
--class_prompt="a photo of dog" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=1 \
--learning_rate=5e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--num_class_images=200 \
--max_train_steps=800
```
### Training on a 16GB GPU:
With the help of gradient checkpointing and the 8-bit optimizer from bitsandbytes it's possible to run train dreambooth on a 16GB GPU.
To install `bitandbytes` please refer to this [readme](https://github.com/TimDettmers/bitsandbytes#requirements--installation).
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export INSTANCE_DIR="path-to-instance-images"
export CLASS_DIR="path-to-class-images"
export OUTPUT_DIR="path-to-save-model"
accelerate launch train_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir=$INSTANCE_DIR \
--class_data_dir=$CLASS_DIR \
--output_dir=$OUTPUT_DIR \
--with_prior_preservation --prior_loss_weight=1.0 \
--instance_prompt="a photo of sks dog" \
--class_prompt="a photo of dog" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=2 --gradient_checkpointing \
--use_8bit_adam \
--learning_rate=5e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--num_class_images=200 \
--max_train_steps=800
```
### Training on a 8 GB GPU:
By using [DeepSpeed](https://www.deepspeed.ai/) it's possible to offload some
tensors from VRAM to either CPU or NVME allowing to train with less VRAM.
DeepSpeed needs to be enabled with `accelerate config`. During configuration
answer yes to "Do you want to use DeepSpeed?". With DeepSpeed stage 2, fp16
mixed precision and offloading both parameters and optimizer state to cpu it's
possible to train on under 8 GB VRAM with a drawback of requiring significantly
more RAM (about 25 GB). See [documentation](https://huggingface.co/docs/accelerate/usage_guides/deepspeed) for more DeepSpeed configuration options.
Changing the default Adam optimizer to DeepSpeed's special version of Adam
`deepspeed.ops.adam.DeepSpeedCPUAdam` gives a substantial speedup but enabling
it requires CUDA toolchain with the same version as pytorch. 8-bit optimizer
does not seem to be compatible with DeepSpeed at the moment.
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export INSTANCE_DIR="path-to-instance-images"
export CLASS_DIR="path-to-class-images"
export OUTPUT_DIR="path-to-save-model"
accelerate launch --mixed_precision="fp16" train_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--instance_data_dir=$INSTANCE_DIR \
--class_data_dir=$CLASS_DIR \
--output_dir=$OUTPUT_DIR \
--with_prior_preservation --prior_loss_weight=1.0 \
--instance_prompt="a photo of sks dog" \
--class_prompt="a photo of dog" \
--resolution=512 \
--train_batch_size=1 \
--sample_batch_size=1 \
--gradient_accumulation_steps=1 --gradient_checkpointing \
--learning_rate=5e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--num_class_images=200 \
--max_train_steps=800
```
### Fine-tune text encoder with the UNet.
The script also allows to fine-tune the `text_encoder` along with the `unet`. It's been observed experimentally that fine-tuning `text_encoder` gives much better results especially on faces.
Pass the `--train_text_encoder` argument to the script to enable training `text_encoder`.
___Note: Training text encoder requires more memory, with this option the training won't fit on 16GB GPU. It needs at least 24GB VRAM.___
```bash
export MODEL_NAME="CompVis/stable-diffusion-v1-4"
export INSTANCE_DIR="path-to-instance-images"
export CLASS_DIR="path-to-class-images"
export OUTPUT_DIR="path-to-save-model"
accelerate launch train_dreambooth.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--train_text_encoder \
--instance_data_dir=$INSTANCE_DIR \
--class_data_dir=$CLASS_DIR \
--output_dir=$OUTPUT_DIR \
--with_prior_preservation --prior_loss_weight=1.0 \
--instance_prompt="a photo of sks dog" \
--class_prompt="a photo of dog" \
--resolution=512 \
--train_batch_size=1 \
--use_8bit_adam \
--gradient_checkpointing \
--learning_rate=2e-6 \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--num_class_images=200 \
--max_train_steps=800
```
### Using DreamBooth for other pipelines than Stable Diffusion
Altdiffusion also support dreambooth now, the runing comman is basically the same as above, all you need to do is replace the `MODEL_NAME` like this:
One can now simply change the `pretrained_model_name_or_path` to another architecture such as [`AltDiffusion`](https://huggingface.co/docs/diffusers/api/pipelines/alt_diffusion).
```
export MODEL_NAME="CompVis/stable-diffusion-v1-4" --> export MODEL_NAME="BAAI/AltDiffusion-m9"
or
export MODEL_NAME="CompVis/stable-diffusion-v1-4" --> export MODEL_NAME="BAAI/AltDiffusion"
```
### Training with xformers:
You can enable memory efficient attention by [installing xFormers](https://github.com/facebookresearch/xformers#installing-xformers) and padding the `--enable_xformers_memory_efficient_attention` argument to the script. This is not available with the Flax/JAX implementation.
You can also use Dreambooth to train the specialized in-painting model. See [the script in the research folder for details](https://github.com/huggingface/diffusers/tree/main/examples/research_projects/dreambooth_inpaint). | diffusers/examples/research_projects/multi_subject_dreambooth/README.md/0 | {
"file_path": "diffusers/examples/research_projects/multi_subject_dreambooth/README.md",
"repo_id": "diffusers",
"token_count": 4807
} | 116 |
## Textual Inversion fine-tuning example
[Textual inversion](https://arxiv.org/abs/2208.01618) is a method to personalize text2image models like stable diffusion on your own images using just 3-5 examples.
The `textual_inversion.py` script shows how to implement the training procedure and adapt it for stable diffusion.
## Running on Colab
Colab for training
[](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/sd_textual_inversion_training.ipynb)
Colab for inference
[](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/stable_conceptualizer_inference.ipynb)
## Running locally with PyTorch
### Installing the dependencies
Before running the scripts, make sure to install the library's training dependencies:
**Important**
To make sure you can successfully run the latest versions of the example scripts, we highly recommend **installing from source** and keeping the install up to date as we update the example scripts frequently and install some example-specific requirements. To do this, execute the following steps in a new virtual environment:
```bash
git clone https://github.com/huggingface/diffusers
cd diffusers
pip install .
```
Then cd in the example folder and run
```bash
pip install -r requirements.txt
```
And initialize an [🤗Accelerate](https://github.com/huggingface/accelerate/) environment with:
```bash
accelerate config
```
### Cat toy example
You need to accept the model license before downloading or using the weights. In this example we'll use model version `v1-5`, so you'll need to visit [its card](https://huggingface.co/runwayml/stable-diffusion-v1-5), read the license and tick the checkbox if you agree.
You have to be a registered user in 🤗 Hugging Face Hub, and you'll also need to use an access token for the code to work. For more information on access tokens, please refer to [this section of the documentation](https://huggingface.co/docs/hub/security-tokens).
Run the following command to authenticate your token
```bash
huggingface-cli login
```
If you have already cloned the repo, then you won't need to go through these steps.
<br>
Now let's get our dataset. For this example we will use some cat images: https://huggingface.co/datasets/diffusers/cat_toy_example .
Let's first download it locally:
```py
from huggingface_hub import snapshot_download
local_dir = "./cat"
snapshot_download("diffusers/cat_toy_example", local_dir=local_dir, repo_type="dataset", ignore_patterns=".gitattributes")
```
This will be our training data.
Now we can launch the training using
## Use ONNXRuntime to accelerate training
In order to leverage onnxruntime to accelerate training, please use textual_inversion.py
The command to train on custom data with onnxruntime:
```bash
export MODEL_NAME="runwayml/stable-diffusion-v1-5"
export DATA_DIR="path-to-dir-containing-images"
accelerate launch textual_inversion.py \
--pretrained_model_name_or_path=$MODEL_NAME \
--train_data_dir=$DATA_DIR \
--learnable_property="object" \
--placeholder_token="<cat-toy>" --initializer_token="toy" \
--resolution=512 \
--train_batch_size=1 \
--gradient_accumulation_steps=4 \
--max_train_steps=3000 \
--learning_rate=5.0e-04 --scale_lr \
--lr_scheduler="constant" \
--lr_warmup_steps=0 \
--output_dir="textual_inversion_cat"
```
Please contact Prathik Rao (prathikr), Sunghoon Choi (hanbitmyths), Ashwini Khade (askhade), or Peng Wang (pengwa) on github with any questions. | diffusers/examples/research_projects/onnxruntime/textual_inversion/README.md/0 | {
"file_path": "diffusers/examples/research_projects/onnxruntime/textual_inversion/README.md",
"repo_id": "diffusers",
"token_count": 1117
} | 117 |
#!/usr/bin/env python
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Fine-tuning script for Stable Diffusion XL for text2image with support for LoRA."""
import argparse
import logging
import math
import os
import random
import shutil
from pathlib import Path
import datasets
import numpy as np
import torch
import torch.nn.functional as F
import torch.utils.checkpoint
import transformers
from accelerate import Accelerator
from accelerate.logging import get_logger
from accelerate.utils import DistributedDataParallelKwargs, ProjectConfiguration, set_seed
from datasets import load_dataset
from huggingface_hub import create_repo, upload_folder
from packaging import version
from peft import LoraConfig, set_peft_model_state_dict
from peft.utils import get_peft_model_state_dict
from torchvision import transforms
from torchvision.transforms.functional import crop
from tqdm.auto import tqdm
from transformers import AutoTokenizer, PretrainedConfig
import diffusers
from diffusers import (
AutoencoderKL,
DDPMScheduler,
StableDiffusionXLPipeline,
UNet2DConditionModel,
)
from diffusers.loaders import LoraLoaderMixin
from diffusers.optimization import get_scheduler
from diffusers.training_utils import _set_state_dict_into_text_encoder, cast_training_params, compute_snr
from diffusers.utils import (
check_min_version,
convert_state_dict_to_diffusers,
convert_unet_state_dict_to_peft,
is_wandb_available,
)
from diffusers.utils.import_utils import is_xformers_available
from diffusers.utils.torch_utils import is_compiled_module
# Will error if the minimal version of diffusers is not installed. Remove at your own risks.
check_min_version("0.26.0.dev0")
logger = get_logger(__name__)
def save_model_card(
repo_id: str,
images=None,
base_model=str,
dataset_name=str,
train_text_encoder=False,
repo_folder=None,
vae_path=None,
):
img_str = ""
for i, image in enumerate(images):
image.save(os.path.join(repo_folder, f"image_{i}.png"))
img_str += f"\n"
yaml = f"""
---
license: creativeml-openrail-m
base_model: {base_model}
dataset: {dataset_name}
tags:
- stable-diffusion-xl
- stable-diffusion-xl-diffusers
- text-to-image
- diffusers
- lora
inference: true
---
"""
model_card = f"""
# LoRA text2image fine-tuning - {repo_id}
These are LoRA adaption weights for {base_model}. The weights were fine-tuned on the {dataset_name} dataset. You can find some example images in the following. \n
{img_str}
LoRA for the text encoder was enabled: {train_text_encoder}.
Special VAE used for training: {vae_path}.
"""
with open(os.path.join(repo_folder, "README.md"), "w") as f:
f.write(yaml + model_card)
def import_model_class_from_model_name_or_path(
pretrained_model_name_or_path: str, revision: str, subfolder: str = "text_encoder"
):
text_encoder_config = PretrainedConfig.from_pretrained(
pretrained_model_name_or_path, subfolder=subfolder, revision=revision
)
model_class = text_encoder_config.architectures[0]
if model_class == "CLIPTextModel":
from transformers import CLIPTextModel
return CLIPTextModel
elif model_class == "CLIPTextModelWithProjection":
from transformers import CLIPTextModelWithProjection
return CLIPTextModelWithProjection
else:
raise ValueError(f"{model_class} is not supported.")
def parse_args(input_args=None):
parser = argparse.ArgumentParser(description="Simple example of a training script.")
parser.add_argument(
"--pretrained_model_name_or_path",
type=str,
default=None,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models.",
)
parser.add_argument(
"--pretrained_vae_model_name_or_path",
type=str,
default=None,
help="Path to pretrained VAE model with better numerical stability. More details: https://github.com/huggingface/diffusers/pull/4038.",
)
parser.add_argument(
"--revision",
type=str,
default=None,
required=False,
help="Revision of pretrained model identifier from huggingface.co/models.",
)
parser.add_argument(
"--variant",
type=str,
default=None,
help="Variant of the model files of the pretrained model identifier from huggingface.co/models, 'e.g.' fp16",
)
parser.add_argument(
"--dataset_name",
type=str,
default=None,
help=(
"The name of the Dataset (from the HuggingFace hub) to train on (could be your own, possibly private,"
" dataset). It can also be a path pointing to a local copy of a dataset in your filesystem,"
" or to a folder containing files that 🤗 Datasets can understand."
),
)
parser.add_argument(
"--dataset_config_name",
type=str,
default=None,
help="The config of the Dataset, leave as None if there's only one config.",
)
parser.add_argument(
"--train_data_dir",
type=str,
default=None,
help=(
"A folder containing the training data. Folder contents must follow the structure described in"
" https://huggingface.co/docs/datasets/image_dataset#imagefolder. In particular, a `metadata.jsonl` file"
" must exist to provide the captions for the images. Ignored if `dataset_name` is specified."
),
)
parser.add_argument(
"--image_column", type=str, default="image", help="The column of the dataset containing an image."
)
parser.add_argument(
"--caption_column",
type=str,
default="text",
help="The column of the dataset containing a caption or a list of captions.",
)
parser.add_argument(
"--validation_prompt",
type=str,
default=None,
help="A prompt that is used during validation to verify that the model is learning.",
)
parser.add_argument(
"--num_validation_images",
type=int,
default=4,
help="Number of images that should be generated during validation with `validation_prompt`.",
)
parser.add_argument(
"--validation_epochs",
type=int,
default=1,
help=(
"Run fine-tuning validation every X epochs. The validation process consists of running the prompt"
" `args.validation_prompt` multiple times: `args.num_validation_images`."
),
)
parser.add_argument(
"--max_train_samples",
type=int,
default=None,
help=(
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
),
)
parser.add_argument(
"--output_dir",
type=str,
default="sd-model-finetuned-lora",
help="The output directory where the model predictions and checkpoints will be written.",
)
parser.add_argument(
"--cache_dir",
type=str,
default=None,
help="The directory where the downloaded models and datasets will be stored.",
)
parser.add_argument("--seed", type=int, default=None, help="A seed for reproducible training.")
parser.add_argument(
"--resolution",
type=int,
default=1024,
help=(
"The resolution for input images, all the images in the train/validation dataset will be resized to this"
" resolution"
),
)
parser.add_argument(
"--center_crop",
default=False,
action="store_true",
help=(
"Whether to center crop the input images to the resolution. If not set, the images will be randomly"
" cropped. The images will be resized to the resolution first before cropping."
),
)
parser.add_argument(
"--random_flip",
action="store_true",
help="whether to randomly flip images horizontally",
)
parser.add_argument(
"--train_text_encoder",
action="store_true",
help="Whether to train the text encoder. If set, the text encoder should be float32 precision.",
)
parser.add_argument(
"--train_batch_size", type=int, default=16, help="Batch size (per device) for the training dataloader."
)
parser.add_argument("--num_train_epochs", type=int, default=100)
parser.add_argument(
"--max_train_steps",
type=int,
default=None,
help="Total number of training steps to perform. If provided, overrides num_train_epochs.",
)
parser.add_argument(
"--checkpointing_steps",
type=int,
default=500,
help=(
"Save a checkpoint of the training state every X updates. These checkpoints can be used both as final"
" checkpoints in case they are better than the last checkpoint, and are also suitable for resuming"
" training using `--resume_from_checkpoint`."
),
)
parser.add_argument(
"--checkpoints_total_limit",
type=int,
default=None,
help=("Max number of checkpoints to store."),
)
parser.add_argument(
"--resume_from_checkpoint",
type=str,
default=None,
help=(
"Whether training should be resumed from a previous checkpoint. Use a path saved by"
' `--checkpointing_steps`, or `"latest"` to automatically select the last available checkpoint.'
),
)
parser.add_argument(
"--gradient_accumulation_steps",
type=int,
default=1,
help="Number of updates steps to accumulate before performing a backward/update pass.",
)
parser.add_argument(
"--gradient_checkpointing",
action="store_true",
help="Whether or not to use gradient checkpointing to save memory at the expense of slower backward pass.",
)
parser.add_argument(
"--learning_rate",
type=float,
default=1e-4,
help="Initial learning rate (after the potential warmup period) to use.",
)
parser.add_argument(
"--scale_lr",
action="store_true",
default=False,
help="Scale the learning rate by the number of GPUs, gradient accumulation steps, and batch size.",
)
parser.add_argument(
"--lr_scheduler",
type=str,
default="constant",
help=(
'The scheduler type to use. Choose between ["linear", "cosine", "cosine_with_restarts", "polynomial",'
' "constant", "constant_with_warmup"]'
),
)
parser.add_argument(
"--lr_warmup_steps", type=int, default=500, help="Number of steps for the warmup in the lr scheduler."
)
parser.add_argument(
"--snr_gamma",
type=float,
default=None,
help="SNR weighting gamma to be used if rebalancing the loss. Recommended value is 5.0. "
"More details here: https://arxiv.org/abs/2303.09556.",
)
parser.add_argument(
"--allow_tf32",
action="store_true",
help=(
"Whether or not to allow TF32 on Ampere GPUs. Can be used to speed up training. For more information, see"
" https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices"
),
)
parser.add_argument(
"--dataloader_num_workers",
type=int,
default=0,
help=(
"Number of subprocesses to use for data loading. 0 means that the data will be loaded in the main process."
),
)
parser.add_argument(
"--use_8bit_adam", action="store_true", help="Whether or not to use 8-bit Adam from bitsandbytes."
)
parser.add_argument("--adam_beta1", type=float, default=0.9, help="The beta1 parameter for the Adam optimizer.")
parser.add_argument("--adam_beta2", type=float, default=0.999, help="The beta2 parameter for the Adam optimizer.")
parser.add_argument("--adam_weight_decay", type=float, default=1e-2, help="Weight decay to use.")
parser.add_argument("--adam_epsilon", type=float, default=1e-08, help="Epsilon value for the Adam optimizer")
parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
parser.add_argument("--push_to_hub", action="store_true", help="Whether or not to push the model to the Hub.")
parser.add_argument("--hub_token", type=str, default=None, help="The token to use to push to the Model Hub.")
parser.add_argument(
"--prediction_type",
type=str,
default=None,
help="The prediction_type that shall be used for training. Choose between 'epsilon' or 'v_prediction' or leave `None`. If left to `None` the default prediction type of the scheduler: `noise_scheduler.config.prediciton_type` is chosen.",
)
parser.add_argument(
"--hub_model_id",
type=str,
default=None,
help="The name of the repository to keep in sync with the local `output_dir`.",
)
parser.add_argument(
"--logging_dir",
type=str,
default="logs",
help=(
"[TensorBoard](https://www.tensorflow.org/tensorboard) log directory. Will default to"
" *output_dir/runs/**CURRENT_DATETIME_HOSTNAME***."
),
)
parser.add_argument(
"--report_to",
type=str,
default="tensorboard",
help=(
'The integration to report the results and logs to. Supported platforms are `"tensorboard"`'
' (default), `"wandb"` and `"comet_ml"`. Use `"all"` to report to all integrations.'
),
)
parser.add_argument(
"--mixed_precision",
type=str,
default=None,
choices=["no", "fp16", "bf16"],
help=(
"Whether to use mixed precision. Choose between fp16 and bf16 (bfloat16). Bf16 requires PyTorch >="
" 1.10.and an Nvidia Ampere GPU. Default to the value of accelerate config of the current system or the"
" flag passed with the `accelerate.launch` command. Use this argument to override the accelerate config."
),
)
parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
parser.add_argument(
"--enable_xformers_memory_efficient_attention", action="store_true", help="Whether or not to use xformers."
)
parser.add_argument("--noise_offset", type=float, default=0, help="The scale of noise offset.")
parser.add_argument(
"--rank",
type=int,
default=4,
help=("The dimension of the LoRA update matrices."),
)
if input_args is not None:
args = parser.parse_args(input_args)
else:
args = parser.parse_args()
env_local_rank = int(os.environ.get("LOCAL_RANK", -1))
if env_local_rank != -1 and env_local_rank != args.local_rank:
args.local_rank = env_local_rank
# Sanity checks
if args.dataset_name is None and args.train_data_dir is None:
raise ValueError("Need either a dataset name or a training folder.")
return args
DATASET_NAME_MAPPING = {
"lambdalabs/pokemon-blip-captions": ("image", "text"),
}
def tokenize_prompt(tokenizer, prompt):
text_inputs = tokenizer(
prompt,
padding="max_length",
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
return text_input_ids
# Adapted from pipelines.StableDiffusionXLPipeline.encode_prompt
def encode_prompt(text_encoders, tokenizers, prompt, text_input_ids_list=None):
prompt_embeds_list = []
for i, text_encoder in enumerate(text_encoders):
if tokenizers is not None:
tokenizer = tokenizers[i]
text_input_ids = tokenize_prompt(tokenizer, prompt)
else:
assert text_input_ids_list is not None
text_input_ids = text_input_ids_list[i]
prompt_embeds = text_encoder(
text_input_ids.to(text_encoder.device), output_hidden_states=True, return_dict=False
)
# We are only ALWAYS interested in the pooled output of the final text encoder
pooled_prompt_embeds = prompt_embeds[0]
prompt_embeds = prompt_embeds[-1][-2]
bs_embed, seq_len, _ = prompt_embeds.shape
prompt_embeds = prompt_embeds.view(bs_embed, seq_len, -1)
prompt_embeds_list.append(prompt_embeds)
prompt_embeds = torch.concat(prompt_embeds_list, dim=-1)
pooled_prompt_embeds = pooled_prompt_embeds.view(bs_embed, -1)
return prompt_embeds, pooled_prompt_embeds
def main(args):
logging_dir = Path(args.output_dir, args.logging_dir)
accelerator_project_config = ProjectConfiguration(project_dir=args.output_dir, logging_dir=logging_dir)
kwargs = DistributedDataParallelKwargs(find_unused_parameters=True)
accelerator = Accelerator(
gradient_accumulation_steps=args.gradient_accumulation_steps,
mixed_precision=args.mixed_precision,
log_with=args.report_to,
project_config=accelerator_project_config,
kwargs_handlers=[kwargs],
)
if args.report_to == "wandb":
if not is_wandb_available():
raise ImportError("Make sure to install wandb if you want to use it for logging during training.")
import wandb
# Make one log on every process with the configuration for debugging.
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
level=logging.INFO,
)
logger.info(accelerator.state, main_process_only=False)
if accelerator.is_local_main_process:
datasets.utils.logging.set_verbosity_warning()
transformers.utils.logging.set_verbosity_warning()
diffusers.utils.logging.set_verbosity_info()
else:
datasets.utils.logging.set_verbosity_error()
transformers.utils.logging.set_verbosity_error()
diffusers.utils.logging.set_verbosity_error()
# If passed along, set the training seed now.
if args.seed is not None:
set_seed(args.seed)
# Handle the repository creation
if accelerator.is_main_process:
if args.output_dir is not None:
os.makedirs(args.output_dir, exist_ok=True)
if args.push_to_hub:
repo_id = create_repo(
repo_id=args.hub_model_id or Path(args.output_dir).name, exist_ok=True, token=args.hub_token
).repo_id
# Load the tokenizers
tokenizer_one = AutoTokenizer.from_pretrained(
args.pretrained_model_name_or_path,
subfolder="tokenizer",
revision=args.revision,
use_fast=False,
)
tokenizer_two = AutoTokenizer.from_pretrained(
args.pretrained_model_name_or_path,
subfolder="tokenizer_2",
revision=args.revision,
use_fast=False,
)
# import correct text encoder classes
text_encoder_cls_one = import_model_class_from_model_name_or_path(
args.pretrained_model_name_or_path, args.revision
)
text_encoder_cls_two = import_model_class_from_model_name_or_path(
args.pretrained_model_name_or_path, args.revision, subfolder="text_encoder_2"
)
# Load scheduler and models
noise_scheduler = DDPMScheduler.from_pretrained(args.pretrained_model_name_or_path, subfolder="scheduler")
text_encoder_one = text_encoder_cls_one.from_pretrained(
args.pretrained_model_name_or_path, subfolder="text_encoder", revision=args.revision, variant=args.variant
)
text_encoder_two = text_encoder_cls_two.from_pretrained(
args.pretrained_model_name_or_path, subfolder="text_encoder_2", revision=args.revision, variant=args.variant
)
vae_path = (
args.pretrained_model_name_or_path
if args.pretrained_vae_model_name_or_path is None
else args.pretrained_vae_model_name_or_path
)
vae = AutoencoderKL.from_pretrained(
vae_path,
subfolder="vae" if args.pretrained_vae_model_name_or_path is None else None,
revision=args.revision,
variant=args.variant,
)
unet = UNet2DConditionModel.from_pretrained(
args.pretrained_model_name_or_path, subfolder="unet", revision=args.revision, variant=args.variant
)
# We only train the additional adapter LoRA layers
vae.requires_grad_(False)
text_encoder_one.requires_grad_(False)
text_encoder_two.requires_grad_(False)
unet.requires_grad_(False)
# For mixed precision training we cast all non-trainable weigths (vae, non-lora text_encoder and non-lora unet) to half-precision
# as these weights are only used for inference, keeping weights in full precision is not required.
weight_dtype = torch.float32
if accelerator.mixed_precision == "fp16":
weight_dtype = torch.float16
elif accelerator.mixed_precision == "bf16":
weight_dtype = torch.bfloat16
# Move unet, vae and text_encoder to device and cast to weight_dtype
# The VAE is in float32 to avoid NaN losses.
unet.to(accelerator.device, dtype=weight_dtype)
if args.pretrained_vae_model_name_or_path is None:
vae.to(accelerator.device, dtype=torch.float32)
else:
vae.to(accelerator.device, dtype=weight_dtype)
text_encoder_one.to(accelerator.device, dtype=weight_dtype)
text_encoder_two.to(accelerator.device, dtype=weight_dtype)
if args.enable_xformers_memory_efficient_attention:
if is_xformers_available():
import xformers
xformers_version = version.parse(xformers.__version__)
if xformers_version == version.parse("0.0.16"):
logger.warn(
"xFormers 0.0.16 cannot be used for training in some GPUs. If you observe problems during training, please update xFormers to at least 0.0.17. See https://huggingface.co/docs/diffusers/main/en/optimization/xformers for more details."
)
unet.enable_xformers_memory_efficient_attention()
else:
raise ValueError("xformers is not available. Make sure it is installed correctly")
# now we will add new LoRA weights to the attention layers
# Set correct lora layers
unet_lora_config = LoraConfig(
r=args.rank,
lora_alpha=args.rank,
init_lora_weights="gaussian",
target_modules=["to_k", "to_q", "to_v", "to_out.0"],
)
unet.add_adapter(unet_lora_config)
# The text encoder comes from 🤗 transformers, we will also attach adapters to it.
if args.train_text_encoder:
# ensure that dtype is float32, even if rest of the model that isn't trained is loaded in fp16
text_lora_config = LoraConfig(
r=args.rank,
lora_alpha=args.rank,
init_lora_weights="gaussian",
target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
)
text_encoder_one.add_adapter(text_lora_config)
text_encoder_two.add_adapter(text_lora_config)
def unwrap_model(model):
model = accelerator.unwrap_model(model)
model = model._orig_mod if is_compiled_module(model) else model
return model
# create custom saving & loading hooks so that `accelerator.save_state(...)` serializes in a nice format
def save_model_hook(models, weights, output_dir):
if accelerator.is_main_process:
# there are only two options here. Either are just the unet attn processor layers
# or there are the unet and text encoder atten layers
unet_lora_layers_to_save = None
text_encoder_one_lora_layers_to_save = None
text_encoder_two_lora_layers_to_save = None
for model in models:
if isinstance(unwrap_model(model), type(unwrap_model(unet))):
unet_lora_layers_to_save = convert_state_dict_to_diffusers(get_peft_model_state_dict(model))
elif isinstance(unwrap_model(model), type(unwrap_model(text_encoder_one))):
text_encoder_one_lora_layers_to_save = convert_state_dict_to_diffusers(
get_peft_model_state_dict(model)
)
elif isinstance(unwrap_model(model), type(unwrap_model(text_encoder_two))):
text_encoder_two_lora_layers_to_save = convert_state_dict_to_diffusers(
get_peft_model_state_dict(model)
)
else:
raise ValueError(f"unexpected save model: {model.__class__}")
# make sure to pop weight so that corresponding model is not saved again
if weights:
weights.pop()
StableDiffusionXLPipeline.save_lora_weights(
output_dir,
unet_lora_layers=unet_lora_layers_to_save,
text_encoder_lora_layers=text_encoder_one_lora_layers_to_save,
text_encoder_2_lora_layers=text_encoder_two_lora_layers_to_save,
)
def load_model_hook(models, input_dir):
unet_ = None
text_encoder_one_ = None
text_encoder_two_ = None
while len(models) > 0:
model = models.pop()
if isinstance(model, type(unwrap_model(unet))):
unet_ = model
elif isinstance(model, type(unwrap_model(text_encoder_one))):
text_encoder_one_ = model
elif isinstance(model, type(unwrap_model(text_encoder_two))):
text_encoder_two_ = model
else:
raise ValueError(f"unexpected save model: {model.__class__}")
lora_state_dict, _ = LoraLoaderMixin.lora_state_dict(input_dir)
unet_state_dict = {f'{k.replace("unet.", "")}': v for k, v in lora_state_dict.items() if k.startswith("unet.")}
unet_state_dict = convert_unet_state_dict_to_peft(unet_state_dict)
incompatible_keys = set_peft_model_state_dict(unet_, unet_state_dict, adapter_name="default")
if incompatible_keys is not None:
# check only for unexpected keys
unexpected_keys = getattr(incompatible_keys, "unexpected_keys", None)
if unexpected_keys:
logger.warning(
f"Loading adapter weights from state_dict led to unexpected keys not found in the model: "
f" {unexpected_keys}. "
)
if args.train_text_encoder:
_set_state_dict_into_text_encoder(lora_state_dict, prefix="text_encoder.", text_encoder=text_encoder_one_)
_set_state_dict_into_text_encoder(
lora_state_dict, prefix="text_encoder_2.", text_encoder=text_encoder_two_
)
# Make sure the trainable params are in float32. This is again needed since the base models
# are in `weight_dtype`. More details:
# https://github.com/huggingface/diffusers/pull/6514#discussion_r1449796804
if args.mixed_precision == "fp16":
models = [unet_]
if args.train_text_encoder:
models.extend([text_encoder_one_, text_encoder_two_])
cast_training_params(models, dtype=torch.float32)
accelerator.register_save_state_pre_hook(save_model_hook)
accelerator.register_load_state_pre_hook(load_model_hook)
if args.gradient_checkpointing:
unet.enable_gradient_checkpointing()
if args.train_text_encoder:
text_encoder_one.gradient_checkpointing_enable()
text_encoder_two.gradient_checkpointing_enable()
# Enable TF32 for faster training on Ampere GPUs,
# cf https://pytorch.org/docs/stable/notes/cuda.html#tensorfloat-32-tf32-on-ampere-devices
if args.allow_tf32:
torch.backends.cuda.matmul.allow_tf32 = True
if args.scale_lr:
args.learning_rate = (
args.learning_rate * args.gradient_accumulation_steps * args.train_batch_size * accelerator.num_processes
)
# Make sure the trainable params are in float32.
if args.mixed_precision == "fp16":
models = [unet]
if args.train_text_encoder:
models.extend([text_encoder_one, text_encoder_two])
cast_training_params(models, dtype=torch.float32)
# Use 8-bit Adam for lower memory usage or to fine-tune the model in 16GB GPUs
if args.use_8bit_adam:
try:
import bitsandbytes as bnb
except ImportError:
raise ImportError(
"To use 8-bit Adam, please install the bitsandbytes library: `pip install bitsandbytes`."
)
optimizer_class = bnb.optim.AdamW8bit
else:
optimizer_class = torch.optim.AdamW
# Optimizer creation
params_to_optimize = list(filter(lambda p: p.requires_grad, unet.parameters()))
if args.train_text_encoder:
params_to_optimize = (
params_to_optimize
+ list(filter(lambda p: p.requires_grad, text_encoder_one.parameters()))
+ list(filter(lambda p: p.requires_grad, text_encoder_two.parameters()))
)
optimizer = optimizer_class(
params_to_optimize,
lr=args.learning_rate,
betas=(args.adam_beta1, args.adam_beta2),
weight_decay=args.adam_weight_decay,
eps=args.adam_epsilon,
)
# Get the datasets: you can either provide your own training and evaluation files (see below)
# or specify a Dataset from the hub (the dataset will be downloaded automatically from the datasets Hub).
# In distributed training, the load_dataset function guarantees that only one local process can concurrently
# download the dataset.
if args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
dataset = load_dataset(
args.dataset_name, args.dataset_config_name, cache_dir=args.cache_dir, data_dir=args.train_data_dir
)
else:
data_files = {}
if args.train_data_dir is not None:
data_files["train"] = os.path.join(args.train_data_dir, "**")
dataset = load_dataset(
"imagefolder",
data_files=data_files,
cache_dir=args.cache_dir,
)
# See more about loading custom images at
# https://huggingface.co/docs/datasets/v2.4.0/en/image_load#imagefolder
# Preprocessing the datasets.
# We need to tokenize inputs and targets.
column_names = dataset["train"].column_names
# 6. Get the column names for input/target.
dataset_columns = DATASET_NAME_MAPPING.get(args.dataset_name, None)
if args.image_column is None:
image_column = dataset_columns[0] if dataset_columns is not None else column_names[0]
else:
image_column = args.image_column
if image_column not in column_names:
raise ValueError(
f"--image_column' value '{args.image_column}' needs to be one of: {', '.join(column_names)}"
)
if args.caption_column is None:
caption_column = dataset_columns[1] if dataset_columns is not None else column_names[1]
else:
caption_column = args.caption_column
if caption_column not in column_names:
raise ValueError(
f"--caption_column' value '{args.caption_column}' needs to be one of: {', '.join(column_names)}"
)
# Preprocessing the datasets.
# We need to tokenize input captions and transform the images.
def tokenize_captions(examples, is_train=True):
captions = []
for caption in examples[caption_column]:
if isinstance(caption, str):
captions.append(caption)
elif isinstance(caption, (list, np.ndarray)):
# take a random caption if there are multiple
captions.append(random.choice(caption) if is_train else caption[0])
else:
raise ValueError(
f"Caption column `{caption_column}` should contain either strings or lists of strings."
)
tokens_one = tokenize_prompt(tokenizer_one, captions)
tokens_two = tokenize_prompt(tokenizer_two, captions)
return tokens_one, tokens_two
# Preprocessing the datasets.
train_resize = transforms.Resize(args.resolution, interpolation=transforms.InterpolationMode.BILINEAR)
train_crop = transforms.CenterCrop(args.resolution) if args.center_crop else transforms.RandomCrop(args.resolution)
train_flip = transforms.RandomHorizontalFlip(p=1.0)
train_transforms = transforms.Compose(
[
transforms.ToTensor(),
transforms.Normalize([0.5], [0.5]),
]
)
def preprocess_train(examples):
images = [image.convert("RGB") for image in examples[image_column]]
# image aug
original_sizes = []
all_images = []
crop_top_lefts = []
for image in images:
original_sizes.append((image.height, image.width))
image = train_resize(image)
if args.random_flip and random.random() < 0.5:
# flip
image = train_flip(image)
if args.center_crop:
y1 = max(0, int(round((image.height - args.resolution) / 2.0)))
x1 = max(0, int(round((image.width - args.resolution) / 2.0)))
image = train_crop(image)
else:
y1, x1, h, w = train_crop.get_params(image, (args.resolution, args.resolution))
image = crop(image, y1, x1, h, w)
crop_top_left = (y1, x1)
crop_top_lefts.append(crop_top_left)
image = train_transforms(image)
all_images.append(image)
examples["original_sizes"] = original_sizes
examples["crop_top_lefts"] = crop_top_lefts
examples["pixel_values"] = all_images
tokens_one, tokens_two = tokenize_captions(examples)
examples["input_ids_one"] = tokens_one
examples["input_ids_two"] = tokens_two
return examples
with accelerator.main_process_first():
if args.max_train_samples is not None:
dataset["train"] = dataset["train"].shuffle(seed=args.seed).select(range(args.max_train_samples))
# Set the training transforms
train_dataset = dataset["train"].with_transform(preprocess_train)
def collate_fn(examples):
pixel_values = torch.stack([example["pixel_values"] for example in examples])
pixel_values = pixel_values.to(memory_format=torch.contiguous_format).float()
original_sizes = [example["original_sizes"] for example in examples]
crop_top_lefts = [example["crop_top_lefts"] for example in examples]
input_ids_one = torch.stack([example["input_ids_one"] for example in examples])
input_ids_two = torch.stack([example["input_ids_two"] for example in examples])
return {
"pixel_values": pixel_values,
"input_ids_one": input_ids_one,
"input_ids_two": input_ids_two,
"original_sizes": original_sizes,
"crop_top_lefts": crop_top_lefts,
}
# DataLoaders creation:
train_dataloader = torch.utils.data.DataLoader(
train_dataset,
shuffle=True,
collate_fn=collate_fn,
batch_size=args.train_batch_size,
num_workers=args.dataloader_num_workers,
)
# Scheduler and math around the number of training steps.
overrode_max_train_steps = False
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if args.max_train_steps is None:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
overrode_max_train_steps = True
lr_scheduler = get_scheduler(
args.lr_scheduler,
optimizer=optimizer,
num_warmup_steps=args.lr_warmup_steps * args.gradient_accumulation_steps,
num_training_steps=args.max_train_steps * args.gradient_accumulation_steps,
)
# Prepare everything with our `accelerator`.
if args.train_text_encoder:
unet, text_encoder_one, text_encoder_two, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
unet, text_encoder_one, text_encoder_two, optimizer, train_dataloader, lr_scheduler
)
else:
unet, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
unet, optimizer, train_dataloader, lr_scheduler
)
# We need to recalculate our total training steps as the size of the training dataloader may have changed.
num_update_steps_per_epoch = math.ceil(len(train_dataloader) / args.gradient_accumulation_steps)
if overrode_max_train_steps:
args.max_train_steps = args.num_train_epochs * num_update_steps_per_epoch
# Afterwards we recalculate our number of training epochs
args.num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
# We need to initialize the trackers we use, and also store our configuration.
# The trackers initializes automatically on the main process.
if accelerator.is_main_process:
accelerator.init_trackers("text2image-fine-tune", config=vars(args))
# Train!
total_batch_size = args.train_batch_size * accelerator.num_processes * args.gradient_accumulation_steps
logger.info("***** Running training *****")
logger.info(f" Num examples = {len(train_dataset)}")
logger.info(f" Num Epochs = {args.num_train_epochs}")
logger.info(f" Instantaneous batch size per device = {args.train_batch_size}")
logger.info(f" Total train batch size (w. parallel, distributed & accumulation) = {total_batch_size}")
logger.info(f" Gradient Accumulation steps = {args.gradient_accumulation_steps}")
logger.info(f" Total optimization steps = {args.max_train_steps}")
global_step = 0
first_epoch = 0
# Potentially load in the weights and states from a previous save
if args.resume_from_checkpoint:
if args.resume_from_checkpoint != "latest":
path = os.path.basename(args.resume_from_checkpoint)
else:
# Get the most recent checkpoint
dirs = os.listdir(args.output_dir)
dirs = [d for d in dirs if d.startswith("checkpoint")]
dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
path = dirs[-1] if len(dirs) > 0 else None
if path is None:
accelerator.print(
f"Checkpoint '{args.resume_from_checkpoint}' does not exist. Starting a new training run."
)
args.resume_from_checkpoint = None
initial_global_step = 0
else:
accelerator.print(f"Resuming from checkpoint {path}")
accelerator.load_state(os.path.join(args.output_dir, path))
global_step = int(path.split("-")[1])
initial_global_step = global_step
first_epoch = global_step // num_update_steps_per_epoch
else:
initial_global_step = 0
progress_bar = tqdm(
range(0, args.max_train_steps),
initial=initial_global_step,
desc="Steps",
# Only show the progress bar once on each machine.
disable=not accelerator.is_local_main_process,
)
for epoch in range(first_epoch, args.num_train_epochs):
unet.train()
if args.train_text_encoder:
text_encoder_one.train()
text_encoder_two.train()
train_loss = 0.0
for step, batch in enumerate(train_dataloader):
with accelerator.accumulate(unet):
# Convert images to latent space
if args.pretrained_vae_model_name_or_path is not None:
pixel_values = batch["pixel_values"].to(dtype=weight_dtype)
else:
pixel_values = batch["pixel_values"]
model_input = vae.encode(pixel_values).latent_dist.sample()
model_input = model_input * vae.config.scaling_factor
if args.pretrained_vae_model_name_or_path is None:
model_input = model_input.to(weight_dtype)
# Sample noise that we'll add to the latents
noise = torch.randn_like(model_input)
if args.noise_offset:
# https://www.crosslabs.org//blog/diffusion-with-offset-noise
noise += args.noise_offset * torch.randn(
(model_input.shape[0], model_input.shape[1], 1, 1), device=model_input.device
)
bsz = model_input.shape[0]
# Sample a random timestep for each image
timesteps = torch.randint(
0, noise_scheduler.config.num_train_timesteps, (bsz,), device=model_input.device
)
timesteps = timesteps.long()
# Add noise to the model input according to the noise magnitude at each timestep
# (this is the forward diffusion process)
noisy_model_input = noise_scheduler.add_noise(model_input, noise, timesteps)
# time ids
def compute_time_ids(original_size, crops_coords_top_left):
# Adapted from pipeline.StableDiffusionXLPipeline._get_add_time_ids
target_size = (args.resolution, args.resolution)
add_time_ids = list(original_size + crops_coords_top_left + target_size)
add_time_ids = torch.tensor([add_time_ids])
add_time_ids = add_time_ids.to(accelerator.device, dtype=weight_dtype)
return add_time_ids
add_time_ids = torch.cat(
[compute_time_ids(s, c) for s, c in zip(batch["original_sizes"], batch["crop_top_lefts"])]
)
# Predict the noise residual
unet_added_conditions = {"time_ids": add_time_ids}
prompt_embeds, pooled_prompt_embeds = encode_prompt(
text_encoders=[text_encoder_one, text_encoder_two],
tokenizers=None,
prompt=None,
text_input_ids_list=[batch["input_ids_one"], batch["input_ids_two"]],
)
unet_added_conditions.update({"text_embeds": pooled_prompt_embeds})
model_pred = unet(
noisy_model_input,
timesteps,
prompt_embeds,
added_cond_kwargs=unet_added_conditions,
return_dict=False,
)[0]
# Get the target for loss depending on the prediction type
if args.prediction_type is not None:
# set prediction_type of scheduler if defined
noise_scheduler.register_to_config(prediction_type=args.prediction_type)
if noise_scheduler.config.prediction_type == "epsilon":
target = noise
elif noise_scheduler.config.prediction_type == "v_prediction":
target = noise_scheduler.get_velocity(model_input, noise, timesteps)
else:
raise ValueError(f"Unknown prediction type {noise_scheduler.config.prediction_type}")
if args.snr_gamma is None:
loss = F.mse_loss(model_pred.float(), target.float(), reduction="mean")
else:
# Compute loss-weights as per Section 3.4 of https://arxiv.org/abs/2303.09556.
# Since we predict the noise instead of x_0, the original formulation is slightly changed.
# This is discussed in Section 4.2 of the same paper.
snr = compute_snr(noise_scheduler, timesteps)
mse_loss_weights = torch.stack([snr, args.snr_gamma * torch.ones_like(timesteps)], dim=1).min(
dim=1
)[0]
if noise_scheduler.config.prediction_type == "epsilon":
mse_loss_weights = mse_loss_weights / snr
elif noise_scheduler.config.prediction_type == "v_prediction":
mse_loss_weights = mse_loss_weights / (snr + 1)
loss = F.mse_loss(model_pred.float(), target.float(), reduction="none")
loss = loss.mean(dim=list(range(1, len(loss.shape)))) * mse_loss_weights
loss = loss.mean()
# Gather the losses across all processes for logging (if we use distributed training).
avg_loss = accelerator.gather(loss.repeat(args.train_batch_size)).mean()
train_loss += avg_loss.item() / args.gradient_accumulation_steps
# Backpropagate
accelerator.backward(loss)
if accelerator.sync_gradients:
accelerator.clip_grad_norm_(params_to_optimize, args.max_grad_norm)
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
# Checks if the accelerator has performed an optimization step behind the scenes
if accelerator.sync_gradients:
progress_bar.update(1)
global_step += 1
accelerator.log({"train_loss": train_loss}, step=global_step)
train_loss = 0.0
if accelerator.is_main_process:
if global_step % args.checkpointing_steps == 0:
# _before_ saving state, check if this save would set us over the `checkpoints_total_limit`
if args.checkpoints_total_limit is not None:
checkpoints = os.listdir(args.output_dir)
checkpoints = [d for d in checkpoints if d.startswith("checkpoint")]
checkpoints = sorted(checkpoints, key=lambda x: int(x.split("-")[1]))
# before we save the new checkpoint, we need to have at _most_ `checkpoints_total_limit - 1` checkpoints
if len(checkpoints) >= args.checkpoints_total_limit:
num_to_remove = len(checkpoints) - args.checkpoints_total_limit + 1
removing_checkpoints = checkpoints[0:num_to_remove]
logger.info(
f"{len(checkpoints)} checkpoints already exist, removing {len(removing_checkpoints)} checkpoints"
)
logger.info(f"removing checkpoints: {', '.join(removing_checkpoints)}")
for removing_checkpoint in removing_checkpoints:
removing_checkpoint = os.path.join(args.output_dir, removing_checkpoint)
shutil.rmtree(removing_checkpoint)
save_path = os.path.join(args.output_dir, f"checkpoint-{global_step}")
accelerator.save_state(save_path)
logger.info(f"Saved state to {save_path}")
logs = {"step_loss": loss.detach().item(), "lr": lr_scheduler.get_last_lr()[0]}
progress_bar.set_postfix(**logs)
if global_step >= args.max_train_steps:
break
if accelerator.is_main_process:
if args.validation_prompt is not None and epoch % args.validation_epochs == 0:
logger.info(
f"Running validation... \n Generating {args.num_validation_images} images with prompt:"
f" {args.validation_prompt}."
)
# create pipeline
pipeline = StableDiffusionXLPipeline.from_pretrained(
args.pretrained_model_name_or_path,
vae=vae,
text_encoder=unwrap_model(text_encoder_one),
text_encoder_2=unwrap_model(text_encoder_two),
unet=unwrap_model(unet),
revision=args.revision,
variant=args.variant,
torch_dtype=weight_dtype,
)
pipeline = pipeline.to(accelerator.device)
pipeline.set_progress_bar_config(disable=True)
# run inference
generator = torch.Generator(device=accelerator.device).manual_seed(args.seed) if args.seed else None
pipeline_args = {"prompt": args.validation_prompt}
with torch.cuda.amp.autocast():
images = [
pipeline(**pipeline_args, generator=generator).images[0]
for _ in range(args.num_validation_images)
]
for tracker in accelerator.trackers:
if tracker.name == "tensorboard":
np_images = np.stack([np.asarray(img) for img in images])
tracker.writer.add_images("validation", np_images, epoch, dataformats="NHWC")
if tracker.name == "wandb":
tracker.log(
{
"validation": [
wandb.Image(image, caption=f"{i}: {args.validation_prompt}")
for i, image in enumerate(images)
]
}
)
del pipeline
torch.cuda.empty_cache()
# Save the lora layers
accelerator.wait_for_everyone()
if accelerator.is_main_process:
unet = unwrap_model(unet)
unet_lora_state_dict = convert_state_dict_to_diffusers(get_peft_model_state_dict(unet))
if args.train_text_encoder:
text_encoder_one = unwrap_model(text_encoder_one)
text_encoder_two = unwrap_model(text_encoder_two)
text_encoder_lora_layers = convert_state_dict_to_diffusers(get_peft_model_state_dict(text_encoder_one))
text_encoder_2_lora_layers = convert_state_dict_to_diffusers(get_peft_model_state_dict(text_encoder_two))
else:
text_encoder_lora_layers = None
text_encoder_2_lora_layers = None
StableDiffusionXLPipeline.save_lora_weights(
save_directory=args.output_dir,
unet_lora_layers=unet_lora_state_dict,
text_encoder_lora_layers=text_encoder_lora_layers,
text_encoder_2_lora_layers=text_encoder_2_lora_layers,
)
del unet
del text_encoder_one
del text_encoder_two
del text_encoder_lora_layers
del text_encoder_2_lora_layers
torch.cuda.empty_cache()
# Final inference
# Make sure vae.dtype is consistent with the unet.dtype
if args.mixed_precision == "fp16":
vae.to(weight_dtype)
# Load previous pipeline
pipeline = StableDiffusionXLPipeline.from_pretrained(
args.pretrained_model_name_or_path,
vae=vae,
revision=args.revision,
variant=args.variant,
torch_dtype=weight_dtype,
)
pipeline = pipeline.to(accelerator.device)
# load attention processors
pipeline.load_lora_weights(args.output_dir)
# run inference
images = []
if args.validation_prompt and args.num_validation_images > 0:
generator = torch.Generator(device=accelerator.device).manual_seed(args.seed) if args.seed else None
images = [
pipeline(args.validation_prompt, num_inference_steps=25, generator=generator).images[0]
for _ in range(args.num_validation_images)
]
for tracker in accelerator.trackers:
if tracker.name == "tensorboard":
np_images = np.stack([np.asarray(img) for img in images])
tracker.writer.add_images("test", np_images, epoch, dataformats="NHWC")
if tracker.name == "wandb":
tracker.log(
{
"test": [
wandb.Image(image, caption=f"{i}: {args.validation_prompt}")
for i, image in enumerate(images)
]
}
)
if args.push_to_hub:
save_model_card(
repo_id,
images=images,
base_model=args.pretrained_model_name_or_path,
dataset_name=args.dataset_name,
train_text_encoder=args.train_text_encoder,
repo_folder=args.output_dir,
vae_path=args.pretrained_vae_model_name_or_path,
)
upload_folder(
repo_id=repo_id,
folder_path=args.output_dir,
commit_message="End of training",
ignore_patterns=["step_*", "epoch_*"],
)
accelerator.end_training()
if __name__ == "__main__":
args = parse_args()
main(args)
| diffusers/examples/text_to_image/train_text_to_image_lora_sdxl.py/0 | {
"file_path": "diffusers/examples/text_to_image/train_text_to_image_lora_sdxl.py",
"repo_id": "diffusers",
"token_count": 24263
} | 118 |
#!/usr/bin/env python3
import argparse
import math
import os
from copy import deepcopy
import torch
from audio_diffusion.models import DiffusionAttnUnet1D
from diffusion import sampling
from torch import nn
from diffusers import DanceDiffusionPipeline, IPNDMScheduler, UNet1DModel
MODELS_MAP = {
"gwf-440k": {
"url": "https://model-server.zqevans2.workers.dev/gwf-440k.ckpt",
"sample_rate": 48000,
"sample_size": 65536,
},
"jmann-small-190k": {
"url": "https://model-server.zqevans2.workers.dev/jmann-small-190k.ckpt",
"sample_rate": 48000,
"sample_size": 65536,
},
"jmann-large-580k": {
"url": "https://model-server.zqevans2.workers.dev/jmann-large-580k.ckpt",
"sample_rate": 48000,
"sample_size": 131072,
},
"maestro-uncond-150k": {
"url": "https://model-server.zqevans2.workers.dev/maestro-uncond-150k.ckpt",
"sample_rate": 16000,
"sample_size": 65536,
},
"unlocked-uncond-250k": {
"url": "https://model-server.zqevans2.workers.dev/unlocked-uncond-250k.ckpt",
"sample_rate": 16000,
"sample_size": 65536,
},
"honk-140k": {
"url": "https://model-server.zqevans2.workers.dev/honk-140k.ckpt",
"sample_rate": 16000,
"sample_size": 65536,
},
}
def alpha_sigma_to_t(alpha, sigma):
"""Returns a timestep, given the scaling factors for the clean image and for
the noise."""
return torch.atan2(sigma, alpha) / math.pi * 2
def get_crash_schedule(t):
sigma = torch.sin(t * math.pi / 2) ** 2
alpha = (1 - sigma**2) ** 0.5
return alpha_sigma_to_t(alpha, sigma)
class Object(object):
pass
class DiffusionUncond(nn.Module):
def __init__(self, global_args):
super().__init__()
self.diffusion = DiffusionAttnUnet1D(global_args, n_attn_layers=4)
self.diffusion_ema = deepcopy(self.diffusion)
self.rng = torch.quasirandom.SobolEngine(1, scramble=True)
def download(model_name):
url = MODELS_MAP[model_name]["url"]
os.system(f"wget {url} ./")
return f"./{model_name}.ckpt"
DOWN_NUM_TO_LAYER = {
"1": "resnets.0",
"2": "attentions.0",
"3": "resnets.1",
"4": "attentions.1",
"5": "resnets.2",
"6": "attentions.2",
}
UP_NUM_TO_LAYER = {
"8": "resnets.0",
"9": "attentions.0",
"10": "resnets.1",
"11": "attentions.1",
"12": "resnets.2",
"13": "attentions.2",
}
MID_NUM_TO_LAYER = {
"1": "resnets.0",
"2": "attentions.0",
"3": "resnets.1",
"4": "attentions.1",
"5": "resnets.2",
"6": "attentions.2",
"8": "resnets.3",
"9": "attentions.3",
"10": "resnets.4",
"11": "attentions.4",
"12": "resnets.5",
"13": "attentions.5",
}
DEPTH_0_TO_LAYER = {
"0": "resnets.0",
"1": "resnets.1",
"2": "resnets.2",
"4": "resnets.0",
"5": "resnets.1",
"6": "resnets.2",
}
RES_CONV_MAP = {
"skip": "conv_skip",
"main.0": "conv_1",
"main.1": "group_norm_1",
"main.3": "conv_2",
"main.4": "group_norm_2",
}
ATTN_MAP = {
"norm": "group_norm",
"qkv_proj": ["query", "key", "value"],
"out_proj": ["proj_attn"],
}
def convert_resconv_naming(name):
if name.startswith("skip"):
return name.replace("skip", RES_CONV_MAP["skip"])
# name has to be of format main.{digit}
if not name.startswith("main."):
raise ValueError(f"ResConvBlock error with {name}")
return name.replace(name[:6], RES_CONV_MAP[name[:6]])
def convert_attn_naming(name):
for key, value in ATTN_MAP.items():
if name.startswith(key) and not isinstance(value, list):
return name.replace(key, value)
elif name.startswith(key):
return [name.replace(key, v) for v in value]
raise ValueError(f"Attn error with {name}")
def rename(input_string, max_depth=13):
string = input_string
if string.split(".")[0] == "timestep_embed":
return string.replace("timestep_embed", "time_proj")
depth = 0
if string.startswith("net.3."):
depth += 1
string = string[6:]
elif string.startswith("net."):
string = string[4:]
while string.startswith("main.7."):
depth += 1
string = string[7:]
if string.startswith("main."):
string = string[5:]
# mid block
if string[:2].isdigit():
layer_num = string[:2]
string_left = string[2:]
else:
layer_num = string[0]
string_left = string[1:]
if depth == max_depth:
new_layer = MID_NUM_TO_LAYER[layer_num]
prefix = "mid_block"
elif depth > 0 and int(layer_num) < 7:
new_layer = DOWN_NUM_TO_LAYER[layer_num]
prefix = f"down_blocks.{depth}"
elif depth > 0 and int(layer_num) > 7:
new_layer = UP_NUM_TO_LAYER[layer_num]
prefix = f"up_blocks.{max_depth - depth - 1}"
elif depth == 0:
new_layer = DEPTH_0_TO_LAYER[layer_num]
prefix = f"up_blocks.{max_depth - 1}" if int(layer_num) > 3 else "down_blocks.0"
if not string_left.startswith("."):
raise ValueError(f"Naming error with {input_string} and string_left: {string_left}.")
string_left = string_left[1:]
if "resnets" in new_layer:
string_left = convert_resconv_naming(string_left)
elif "attentions" in new_layer:
new_string_left = convert_attn_naming(string_left)
string_left = new_string_left
if not isinstance(string_left, list):
new_string = prefix + "." + new_layer + "." + string_left
else:
new_string = [prefix + "." + new_layer + "." + s for s in string_left]
return new_string
def rename_orig_weights(state_dict):
new_state_dict = {}
for k, v in state_dict.items():
if k.endswith("kernel"):
# up- and downsample layers, don't have trainable weights
continue
new_k = rename(k)
# check if we need to transform from Conv => Linear for attention
if isinstance(new_k, list):
new_state_dict = transform_conv_attns(new_state_dict, new_k, v)
else:
new_state_dict[new_k] = v
return new_state_dict
def transform_conv_attns(new_state_dict, new_k, v):
if len(new_k) == 1:
if len(v.shape) == 3:
# weight
new_state_dict[new_k[0]] = v[:, :, 0]
else:
# bias
new_state_dict[new_k[0]] = v
else:
# qkv matrices
trippled_shape = v.shape[0]
single_shape = trippled_shape // 3
for i in range(3):
if len(v.shape) == 3:
new_state_dict[new_k[i]] = v[i * single_shape : (i + 1) * single_shape, :, 0]
else:
new_state_dict[new_k[i]] = v[i * single_shape : (i + 1) * single_shape]
return new_state_dict
def main(args):
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model_name = args.model_path.split("/")[-1].split(".")[0]
if not os.path.isfile(args.model_path):
assert (
model_name == args.model_path
), f"Make sure to provide one of the official model names {MODELS_MAP.keys()}"
args.model_path = download(model_name)
sample_rate = MODELS_MAP[model_name]["sample_rate"]
sample_size = MODELS_MAP[model_name]["sample_size"]
config = Object()
config.sample_size = sample_size
config.sample_rate = sample_rate
config.latent_dim = 0
diffusers_model = UNet1DModel(sample_size=sample_size, sample_rate=sample_rate)
diffusers_state_dict = diffusers_model.state_dict()
orig_model = DiffusionUncond(config)
orig_model.load_state_dict(torch.load(args.model_path, map_location=device)["state_dict"])
orig_model = orig_model.diffusion_ema.eval()
orig_model_state_dict = orig_model.state_dict()
renamed_state_dict = rename_orig_weights(orig_model_state_dict)
renamed_minus_diffusers = set(renamed_state_dict.keys()) - set(diffusers_state_dict.keys())
diffusers_minus_renamed = set(diffusers_state_dict.keys()) - set(renamed_state_dict.keys())
assert len(renamed_minus_diffusers) == 0, f"Problem with {renamed_minus_diffusers}"
assert all(k.endswith("kernel") for k in list(diffusers_minus_renamed)), f"Problem with {diffusers_minus_renamed}"
for key, value in renamed_state_dict.items():
assert (
diffusers_state_dict[key].squeeze().shape == value.squeeze().shape
), f"Shape for {key} doesn't match. Diffusers: {diffusers_state_dict[key].shape} vs. {value.shape}"
if key == "time_proj.weight":
value = value.squeeze()
diffusers_state_dict[key] = value
diffusers_model.load_state_dict(diffusers_state_dict)
steps = 100
seed = 33
diffusers_scheduler = IPNDMScheduler(num_train_timesteps=steps)
generator = torch.manual_seed(seed)
noise = torch.randn([1, 2, config.sample_size], generator=generator).to(device)
t = torch.linspace(1, 0, steps + 1, device=device)[:-1]
step_list = get_crash_schedule(t)
pipe = DanceDiffusionPipeline(unet=diffusers_model, scheduler=diffusers_scheduler)
generator = torch.manual_seed(33)
audio = pipe(num_inference_steps=steps, generator=generator).audios
generated = sampling.iplms_sample(orig_model, noise, step_list, {})
generated = generated.clamp(-1, 1)
diff_sum = (generated - audio).abs().sum()
diff_max = (generated - audio).abs().max()
if args.save:
pipe.save_pretrained(args.checkpoint_path)
print("Diff sum", diff_sum)
print("Diff max", diff_max)
assert diff_max < 1e-3, f"Diff max: {diff_max} is too much :-/"
print(f"Conversion for {model_name} successful!")
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--model_path", default=None, type=str, required=True, help="Path to the model to convert.")
parser.add_argument(
"--save", default=True, type=bool, required=False, help="Whether to save the converted model or not."
)
parser.add_argument("--checkpoint_path", default=None, type=str, required=True, help="Path to the output model.")
args = parser.parse_args()
main(args)
| diffusers/scripts/convert_dance_diffusion_to_diffusers.py/0 | {
"file_path": "diffusers/scripts/convert_dance_diffusion_to_diffusers.py",
"repo_id": "diffusers",
"token_count": 4561
} | 119 |
import argparse
from transformers import CLIPImageProcessor, CLIPVisionModelWithProjection
from diffusers import UnCLIPImageVariationPipeline, UnCLIPPipeline
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--dump_path", default=None, type=str, required=True, help="Path to the output model.")
parser.add_argument(
"--txt2img_unclip",
default="kakaobrain/karlo-v1-alpha",
type=str,
required=False,
help="The pretrained txt2img unclip.",
)
args = parser.parse_args()
txt2img = UnCLIPPipeline.from_pretrained(args.txt2img_unclip)
feature_extractor = CLIPImageProcessor()
image_encoder = CLIPVisionModelWithProjection.from_pretrained("openai/clip-vit-large-patch14")
img2img = UnCLIPImageVariationPipeline(
decoder=txt2img.decoder,
text_encoder=txt2img.text_encoder,
tokenizer=txt2img.tokenizer,
text_proj=txt2img.text_proj,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
super_res_first=txt2img.super_res_first,
super_res_last=txt2img.super_res_last,
decoder_scheduler=txt2img.decoder_scheduler,
super_res_scheduler=txt2img.super_res_scheduler,
)
img2img.save_pretrained(args.dump_path)
| diffusers/scripts/convert_unclip_txt2img_to_image_variation.py/0 | {
"file_path": "diffusers/scripts/convert_unclip_txt2img_to_image_variation.py",
"repo_id": "diffusers",
"token_count": 554
} | 120 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .dependency_versions_table import deps
from .utils.versions import require_version, require_version_core
# define which module versions we always want to check at run time
# (usually the ones defined in `install_requires` in setup.py)
#
# order specific notes:
# - tqdm must be checked before tokenizers
pkgs_to_check_at_runtime = "python requests filelock numpy".split()
for pkg in pkgs_to_check_at_runtime:
if pkg in deps:
require_version_core(deps[pkg])
else:
raise ValueError(f"can't find {pkg} in {deps.keys()}, check dependency_versions_table.py")
def dep_version_check(pkg, hint=None):
require_version(deps[pkg], hint)
| diffusers/src/diffusers/dependency_versions_check.py/0 | {
"file_path": "diffusers/src/diffusers/dependency_versions_check.py",
"repo_id": "diffusers",
"token_count": 382
} | 121 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Dict, List, Optional, Union
import safetensors
import torch
from huggingface_hub.utils import validate_hf_hub_args
from torch import nn
from ..utils import _get_model_file, is_accelerate_available, is_transformers_available, logging
if is_transformers_available():
from transformers import PreTrainedModel, PreTrainedTokenizer
if is_accelerate_available():
from accelerate.hooks import AlignDevicesHook, CpuOffload, remove_hook_from_module
logger = logging.get_logger(__name__)
TEXT_INVERSION_NAME = "learned_embeds.bin"
TEXT_INVERSION_NAME_SAFE = "learned_embeds.safetensors"
@validate_hf_hub_args
def load_textual_inversion_state_dicts(pretrained_model_name_or_paths, **kwargs):
cache_dir = kwargs.pop("cache_dir", None)
force_download = kwargs.pop("force_download", False)
resume_download = kwargs.pop("resume_download", False)
proxies = kwargs.pop("proxies", None)
local_files_only = kwargs.pop("local_files_only", None)
token = kwargs.pop("token", None)
revision = kwargs.pop("revision", None)
subfolder = kwargs.pop("subfolder", None)
weight_name = kwargs.pop("weight_name", None)
use_safetensors = kwargs.pop("use_safetensors", None)
allow_pickle = False
if use_safetensors is None:
use_safetensors = True
allow_pickle = True
user_agent = {
"file_type": "text_inversion",
"framework": "pytorch",
}
state_dicts = []
for pretrained_model_name_or_path in pretrained_model_name_or_paths:
if not isinstance(pretrained_model_name_or_path, (dict, torch.Tensor)):
# 3.1. Load textual inversion file
model_file = None
# Let's first try to load .safetensors weights
if (use_safetensors and weight_name is None) or (
weight_name is not None and weight_name.endswith(".safetensors")
):
try:
model_file = _get_model_file(
pretrained_model_name_or_path,
weights_name=weight_name or TEXT_INVERSION_NAME_SAFE,
cache_dir=cache_dir,
force_download=force_download,
resume_download=resume_download,
proxies=proxies,
local_files_only=local_files_only,
token=token,
revision=revision,
subfolder=subfolder,
user_agent=user_agent,
)
state_dict = safetensors.torch.load_file(model_file, device="cpu")
except Exception as e:
if not allow_pickle:
raise e
model_file = None
if model_file is None:
model_file = _get_model_file(
pretrained_model_name_or_path,
weights_name=weight_name or TEXT_INVERSION_NAME,
cache_dir=cache_dir,
force_download=force_download,
resume_download=resume_download,
proxies=proxies,
local_files_only=local_files_only,
token=token,
revision=revision,
subfolder=subfolder,
user_agent=user_agent,
)
state_dict = torch.load(model_file, map_location="cpu")
else:
state_dict = pretrained_model_name_or_path
state_dicts.append(state_dict)
return state_dicts
class TextualInversionLoaderMixin:
r"""
Load Textual Inversion tokens and embeddings to the tokenizer and text encoder.
"""
def maybe_convert_prompt(self, prompt: Union[str, List[str]], tokenizer: "PreTrainedTokenizer"): # noqa: F821
r"""
Processes prompts that include a special token corresponding to a multi-vector textual inversion embedding to
be replaced with multiple special tokens each corresponding to one of the vectors. If the prompt has no textual
inversion token or if the textual inversion token is a single vector, the input prompt is returned.
Parameters:
prompt (`str` or list of `str`):
The prompt or prompts to guide the image generation.
tokenizer (`PreTrainedTokenizer`):
The tokenizer responsible for encoding the prompt into input tokens.
Returns:
`str` or list of `str`: The converted prompt
"""
if not isinstance(prompt, List):
prompts = [prompt]
else:
prompts = prompt
prompts = [self._maybe_convert_prompt(p, tokenizer) for p in prompts]
if not isinstance(prompt, List):
return prompts[0]
return prompts
def _maybe_convert_prompt(self, prompt: str, tokenizer: "PreTrainedTokenizer"): # noqa: F821
r"""
Maybe convert a prompt into a "multi vector"-compatible prompt. If the prompt includes a token that corresponds
to a multi-vector textual inversion embedding, this function will process the prompt so that the special token
is replaced with multiple special tokens each corresponding to one of the vectors. If the prompt has no textual
inversion token or a textual inversion token that is a single vector, the input prompt is simply returned.
Parameters:
prompt (`str`):
The prompt to guide the image generation.
tokenizer (`PreTrainedTokenizer`):
The tokenizer responsible for encoding the prompt into input tokens.
Returns:
`str`: The converted prompt
"""
tokens = tokenizer.tokenize(prompt)
unique_tokens = set(tokens)
for token in unique_tokens:
if token in tokenizer.added_tokens_encoder:
replacement = token
i = 1
while f"{token}_{i}" in tokenizer.added_tokens_encoder:
replacement += f" {token}_{i}"
i += 1
prompt = prompt.replace(token, replacement)
return prompt
def _check_text_inv_inputs(self, tokenizer, text_encoder, pretrained_model_name_or_paths, tokens):
if tokenizer is None:
raise ValueError(
f"{self.__class__.__name__} requires `self.tokenizer` or passing a `tokenizer` of type `PreTrainedTokenizer` for calling"
f" `{self.load_textual_inversion.__name__}`"
)
if text_encoder is None:
raise ValueError(
f"{self.__class__.__name__} requires `self.text_encoder` or passing a `text_encoder` of type `PreTrainedModel` for calling"
f" `{self.load_textual_inversion.__name__}`"
)
if len(pretrained_model_name_or_paths) > 1 and len(pretrained_model_name_or_paths) != len(tokens):
raise ValueError(
f"You have passed a list of models of length {len(pretrained_model_name_or_paths)}, and list of tokens of length {len(tokens)} "
f"Make sure both lists have the same length."
)
valid_tokens = [t for t in tokens if t is not None]
if len(set(valid_tokens)) < len(valid_tokens):
raise ValueError(f"You have passed a list of tokens that contains duplicates: {tokens}")
@staticmethod
def _retrieve_tokens_and_embeddings(tokens, state_dicts, tokenizer):
all_tokens = []
all_embeddings = []
for state_dict, token in zip(state_dicts, tokens):
if isinstance(state_dict, torch.Tensor):
if token is None:
raise ValueError(
"You are trying to load a textual inversion embedding that has been saved as a PyTorch tensor. Make sure to pass the name of the corresponding token in this case: `token=...`."
)
loaded_token = token
embedding = state_dict
elif len(state_dict) == 1:
# diffusers
loaded_token, embedding = next(iter(state_dict.items()))
elif "string_to_param" in state_dict:
# A1111
loaded_token = state_dict["name"]
embedding = state_dict["string_to_param"]["*"]
else:
raise ValueError(
f"Loaded state dictonary is incorrect: {state_dict}. \n\n"
"Please verify that the loaded state dictionary of the textual embedding either only has a single key or includes the `string_to_param`"
" input key."
)
if token is not None and loaded_token != token:
logger.info(f"The loaded token: {loaded_token} is overwritten by the passed token {token}.")
else:
token = loaded_token
if token in tokenizer.get_vocab():
raise ValueError(
f"Token {token} already in tokenizer vocabulary. Please choose a different token name or remove {token} and embedding from the tokenizer and text encoder."
)
all_tokens.append(token)
all_embeddings.append(embedding)
return all_tokens, all_embeddings
@staticmethod
def _extend_tokens_and_embeddings(tokens, embeddings, tokenizer):
all_tokens = []
all_embeddings = []
for embedding, token in zip(embeddings, tokens):
if f"{token}_1" in tokenizer.get_vocab():
multi_vector_tokens = [token]
i = 1
while f"{token}_{i}" in tokenizer.added_tokens_encoder:
multi_vector_tokens.append(f"{token}_{i}")
i += 1
raise ValueError(
f"Multi-vector Token {multi_vector_tokens} already in tokenizer vocabulary. Please choose a different token name or remove the {multi_vector_tokens} and embedding from the tokenizer and text encoder."
)
is_multi_vector = len(embedding.shape) > 1 and embedding.shape[0] > 1
if is_multi_vector:
all_tokens += [token] + [f"{token}_{i}" for i in range(1, embedding.shape[0])]
all_embeddings += [e for e in embedding] # noqa: C416
else:
all_tokens += [token]
all_embeddings += [embedding[0]] if len(embedding.shape) > 1 else [embedding]
return all_tokens, all_embeddings
@validate_hf_hub_args
def load_textual_inversion(
self,
pretrained_model_name_or_path: Union[str, List[str], Dict[str, torch.Tensor], List[Dict[str, torch.Tensor]]],
token: Optional[Union[str, List[str]]] = None,
tokenizer: Optional["PreTrainedTokenizer"] = None, # noqa: F821
text_encoder: Optional["PreTrainedModel"] = None, # noqa: F821
**kwargs,
):
r"""
Load Textual Inversion embeddings into the text encoder of [`StableDiffusionPipeline`] (both 🤗 Diffusers and
Automatic1111 formats are supported).
Parameters:
pretrained_model_name_or_path (`str` or `os.PathLike` or `List[str or os.PathLike]` or `Dict` or `List[Dict]`):
Can be either one of the following or a list of them:
- A string, the *model id* (for example `sd-concepts-library/low-poly-hd-logos-icons`) of a
pretrained model hosted on the Hub.
- A path to a *directory* (for example `./my_text_inversion_directory/`) containing the textual
inversion weights.
- A path to a *file* (for example `./my_text_inversions.pt`) containing textual inversion weights.
- A [torch state
dict](https://pytorch.org/tutorials/beginner/saving_loading_models.html#what-is-a-state-dict).
token (`str` or `List[str]`, *optional*):
Override the token to use for the textual inversion weights. If `pretrained_model_name_or_path` is a
list, then `token` must also be a list of equal length.
text_encoder ([`~transformers.CLIPTextModel`], *optional*):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
If not specified, function will take self.tokenizer.
tokenizer ([`~transformers.CLIPTokenizer`], *optional*):
A `CLIPTokenizer` to tokenize text. If not specified, function will take self.tokenizer.
weight_name (`str`, *optional*):
Name of a custom weight file. This should be used when:
- The saved textual inversion file is in 🤗 Diffusers format, but was saved under a specific weight
name such as `text_inv.bin`.
- The saved textual inversion file is in the Automatic1111 format.
cache_dir (`Union[str, os.PathLike]`, *optional*):
Path to a directory where a downloaded pretrained model configuration is cached if the standard cache
is not used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force the (re-)download of the model weights and configuration files, overriding the
cached versions if they exist.
resume_download (`bool`, *optional*, defaults to `False`):
Whether or not to resume downloading the model weights and configuration files. If set to `False`, any
incompletely downloaded files are deleted.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, for example, `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}`. The proxies are used on each request.
local_files_only (`bool`, *optional*, defaults to `False`):
Whether to only load local model weights and configuration files or not. If set to `True`, the model
won't be downloaded from the Hub.
token (`str` or *bool*, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, the token generated from
`diffusers-cli login` (stored in `~/.huggingface`) is used.
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, a commit id, or any identifier
allowed by Git.
subfolder (`str`, *optional*, defaults to `""`):
The subfolder location of a model file within a larger model repository on the Hub or locally.
mirror (`str`, *optional*):
Mirror source to resolve accessibility issues if you're downloading a model in China. We do not
guarantee the timeliness or safety of the source, and you should refer to the mirror site for more
information.
Example:
To load a Textual Inversion embedding vector in 🤗 Diffusers format:
```py
from diffusers import StableDiffusionPipeline
import torch
model_id = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
pipe.load_textual_inversion("sd-concepts-library/cat-toy")
prompt = "A <cat-toy> backpack"
image = pipe(prompt, num_inference_steps=50).images[0]
image.save("cat-backpack.png")
```
To load a Textual Inversion embedding vector in Automatic1111 format, make sure to download the vector first
(for example from [civitAI](https://civitai.com/models/3036?modelVersionId=9857)) and then load the vector
locally:
```py
from diffusers import StableDiffusionPipeline
import torch
model_id = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
pipe.load_textual_inversion("./charturnerv2.pt", token="charturnerv2")
prompt = "charturnerv2, multiple views of the same character in the same outfit, a character turnaround of a woman wearing a black jacket and red shirt, best quality, intricate details."
image = pipe(prompt, num_inference_steps=50).images[0]
image.save("character.png")
```
"""
# 1. Set correct tokenizer and text encoder
tokenizer = tokenizer or getattr(self, "tokenizer", None)
text_encoder = text_encoder or getattr(self, "text_encoder", None)
# 2. Normalize inputs
pretrained_model_name_or_paths = (
[pretrained_model_name_or_path]
if not isinstance(pretrained_model_name_or_path, list)
else pretrained_model_name_or_path
)
tokens = [token] if not isinstance(token, list) else token
if tokens[0] is None:
tokens = tokens * len(pretrained_model_name_or_paths)
# 3. Check inputs
self._check_text_inv_inputs(tokenizer, text_encoder, pretrained_model_name_or_paths, tokens)
# 4. Load state dicts of textual embeddings
state_dicts = load_textual_inversion_state_dicts(pretrained_model_name_or_paths, **kwargs)
# 4.1 Handle the special case when state_dict is a tensor that contains n embeddings for n tokens
if len(tokens) > 1 and len(state_dicts) == 1:
if isinstance(state_dicts[0], torch.Tensor):
state_dicts = list(state_dicts[0])
if len(tokens) != len(state_dicts):
raise ValueError(
f"You have passed a state_dict contains {len(state_dicts)} embeddings, and list of tokens of length {len(tokens)} "
f"Make sure both have the same length."
)
# 4. Retrieve tokens and embeddings
tokens, embeddings = self._retrieve_tokens_and_embeddings(tokens, state_dicts, tokenizer)
# 5. Extend tokens and embeddings for multi vector
tokens, embeddings = self._extend_tokens_and_embeddings(tokens, embeddings, tokenizer)
# 6. Make sure all embeddings have the correct size
expected_emb_dim = text_encoder.get_input_embeddings().weight.shape[-1]
if any(expected_emb_dim != emb.shape[-1] for emb in embeddings):
raise ValueError(
"Loaded embeddings are of incorrect shape. Expected each textual inversion embedding "
"to be of shape {input_embeddings.shape[-1]}, but are {embeddings.shape[-1]} "
)
# 7. Now we can be sure that loading the embedding matrix works
# < Unsafe code:
# 7.1 Offload all hooks in case the pipeline was cpu offloaded before make sure, we offload and onload again
is_model_cpu_offload = False
is_sequential_cpu_offload = False
for _, component in self.components.items():
if isinstance(component, nn.Module):
if hasattr(component, "_hf_hook"):
is_model_cpu_offload = isinstance(getattr(component, "_hf_hook"), CpuOffload)
is_sequential_cpu_offload = isinstance(getattr(component, "_hf_hook"), AlignDevicesHook)
logger.info(
"Accelerate hooks detected. Since you have called `load_textual_inversion()`, the previous hooks will be first removed. Then the textual inversion parameters will be loaded and the hooks will be applied again."
)
remove_hook_from_module(component, recurse=is_sequential_cpu_offload)
# 7.2 save expected device and dtype
device = text_encoder.device
dtype = text_encoder.dtype
# 7.3 Increase token embedding matrix
text_encoder.resize_token_embeddings(len(tokenizer) + len(tokens))
input_embeddings = text_encoder.get_input_embeddings().weight
# 7.4 Load token and embedding
for token, embedding in zip(tokens, embeddings):
# add tokens and get ids
tokenizer.add_tokens(token)
token_id = tokenizer.convert_tokens_to_ids(token)
input_embeddings.data[token_id] = embedding
logger.info(f"Loaded textual inversion embedding for {token}.")
input_embeddings.to(dtype=dtype, device=device)
# 7.5 Offload the model again
if is_model_cpu_offload:
self.enable_model_cpu_offload()
elif is_sequential_cpu_offload:
self.enable_sequential_cpu_offload()
# / Unsafe Code >
def unload_textual_inversion(
self,
tokens: Optional[Union[str, List[str]]] = None,
):
r"""
Unload Textual Inversion embeddings from the text encoder of [`StableDiffusionPipeline`]
Example:
```py
from diffusers import AutoPipelineForText2Image
import torch
pipeline = AutoPipelineForText2Image.from_pretrained("runwayml/stable-diffusion-v1-5")
# Example 1
pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork")
pipeline.load_textual_inversion("sd-concepts-library/moeb-style")
# Remove all token embeddings
pipeline.unload_textual_inversion()
# Example 2
pipeline.load_textual_inversion("sd-concepts-library/moeb-style")
pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork")
# Remove just one token
pipeline.unload_textual_inversion("<moe-bius>")
```
"""
tokenizer = getattr(self, "tokenizer", None)
text_encoder = getattr(self, "text_encoder", None)
# Get textual inversion tokens and ids
token_ids = []
last_special_token_id = None
if tokens:
if isinstance(tokens, str):
tokens = [tokens]
for added_token_id, added_token in tokenizer.added_tokens_decoder.items():
if not added_token.special:
if added_token.content in tokens:
token_ids.append(added_token_id)
else:
last_special_token_id = added_token_id
if len(token_ids) == 0:
raise ValueError("No tokens to remove found")
else:
tokens = []
for added_token_id, added_token in tokenizer.added_tokens_decoder.items():
if not added_token.special:
token_ids.append(added_token_id)
tokens.append(added_token.content)
else:
last_special_token_id = added_token_id
# Delete from tokenizer
for token_id, token_to_remove in zip(token_ids, tokens):
del tokenizer._added_tokens_decoder[token_id]
del tokenizer._added_tokens_encoder[token_to_remove]
# Make all token ids sequential in tokenizer
key_id = 1
for token_id in tokenizer.added_tokens_decoder:
if token_id > last_special_token_id and token_id > last_special_token_id + key_id:
token = tokenizer._added_tokens_decoder[token_id]
tokenizer._added_tokens_decoder[last_special_token_id + key_id] = token
del tokenizer._added_tokens_decoder[token_id]
tokenizer._added_tokens_encoder[token.content] = last_special_token_id + key_id
key_id += 1
tokenizer._update_trie()
# Delete from text encoder
text_embedding_dim = text_encoder.get_input_embeddings().embedding_dim
temp_text_embedding_weights = text_encoder.get_input_embeddings().weight
text_embedding_weights = temp_text_embedding_weights[: last_special_token_id + 1]
to_append = []
for i in range(last_special_token_id + 1, temp_text_embedding_weights.shape[0]):
if i not in token_ids:
to_append.append(temp_text_embedding_weights[i].unsqueeze(0))
if len(to_append) > 0:
to_append = torch.cat(to_append, dim=0)
text_embedding_weights = torch.cat([text_embedding_weights, to_append], dim=0)
text_embeddings_filtered = nn.Embedding(text_embedding_weights.shape[0], text_embedding_dim)
text_embeddings_filtered.weight.data = text_embedding_weights
text_encoder.set_input_embeddings(text_embeddings_filtered)
| diffusers/src/diffusers/loaders/textual_inversion.py/0 | {
"file_path": "diffusers/src/diffusers/loaders/textual_inversion.py",
"repo_id": "diffusers",
"token_count": 11257
} | 122 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from dataclasses import dataclass
from typing import Optional, Tuple
import numpy as np
import torch
import torch.nn as nn
from ...utils import BaseOutput, is_torch_version
from ...utils.torch_utils import randn_tensor
from ..activations import get_activation
from ..attention_processor import SpatialNorm
from ..unets.unet_2d_blocks import (
AutoencoderTinyBlock,
UNetMidBlock2D,
get_down_block,
get_up_block,
)
@dataclass
class DecoderOutput(BaseOutput):
r"""
Output of decoding method.
Args:
sample (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
The decoded output sample from the last layer of the model.
"""
sample: torch.FloatTensor
class Encoder(nn.Module):
r"""
The `Encoder` layer of a variational autoencoder that encodes its input into a latent representation.
Args:
in_channels (`int`, *optional*, defaults to 3):
The number of input channels.
out_channels (`int`, *optional*, defaults to 3):
The number of output channels.
down_block_types (`Tuple[str, ...]`, *optional*, defaults to `("DownEncoderBlock2D",)`):
The types of down blocks to use. See `~diffusers.models.unet_2d_blocks.get_down_block` for available
options.
block_out_channels (`Tuple[int, ...]`, *optional*, defaults to `(64,)`):
The number of output channels for each block.
layers_per_block (`int`, *optional*, defaults to 2):
The number of layers per block.
norm_num_groups (`int`, *optional*, defaults to 32):
The number of groups for normalization.
act_fn (`str`, *optional*, defaults to `"silu"`):
The activation function to use. See `~diffusers.models.activations.get_activation` for available options.
double_z (`bool`, *optional*, defaults to `True`):
Whether to double the number of output channels for the last block.
"""
def __init__(
self,
in_channels: int = 3,
out_channels: int = 3,
down_block_types: Tuple[str, ...] = ("DownEncoderBlock2D",),
block_out_channels: Tuple[int, ...] = (64,),
layers_per_block: int = 2,
norm_num_groups: int = 32,
act_fn: str = "silu",
double_z: bool = True,
mid_block_add_attention=True,
):
super().__init__()
self.layers_per_block = layers_per_block
self.conv_in = nn.Conv2d(
in_channels,
block_out_channels[0],
kernel_size=3,
stride=1,
padding=1,
)
self.mid_block = None
self.down_blocks = nn.ModuleList([])
# down
output_channel = block_out_channels[0]
for i, down_block_type in enumerate(down_block_types):
input_channel = output_channel
output_channel = block_out_channels[i]
is_final_block = i == len(block_out_channels) - 1
down_block = get_down_block(
down_block_type,
num_layers=self.layers_per_block,
in_channels=input_channel,
out_channels=output_channel,
add_downsample=not is_final_block,
resnet_eps=1e-6,
downsample_padding=0,
resnet_act_fn=act_fn,
resnet_groups=norm_num_groups,
attention_head_dim=output_channel,
temb_channels=None,
)
self.down_blocks.append(down_block)
# mid
self.mid_block = UNetMidBlock2D(
in_channels=block_out_channels[-1],
resnet_eps=1e-6,
resnet_act_fn=act_fn,
output_scale_factor=1,
resnet_time_scale_shift="default",
attention_head_dim=block_out_channels[-1],
resnet_groups=norm_num_groups,
temb_channels=None,
add_attention=mid_block_add_attention,
)
# out
self.conv_norm_out = nn.GroupNorm(num_channels=block_out_channels[-1], num_groups=norm_num_groups, eps=1e-6)
self.conv_act = nn.SiLU()
conv_out_channels = 2 * out_channels if double_z else out_channels
self.conv_out = nn.Conv2d(block_out_channels[-1], conv_out_channels, 3, padding=1)
self.gradient_checkpointing = False
def forward(self, sample: torch.FloatTensor) -> torch.FloatTensor:
r"""The forward method of the `Encoder` class."""
sample = self.conv_in(sample)
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
# down
if is_torch_version(">=", "1.11.0"):
for down_block in self.down_blocks:
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(down_block), sample, use_reentrant=False
)
# middle
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.mid_block), sample, use_reentrant=False
)
else:
for down_block in self.down_blocks:
sample = torch.utils.checkpoint.checkpoint(create_custom_forward(down_block), sample)
# middle
sample = torch.utils.checkpoint.checkpoint(create_custom_forward(self.mid_block), sample)
else:
# down
for down_block in self.down_blocks:
sample = down_block(sample)
# middle
sample = self.mid_block(sample)
# post-process
sample = self.conv_norm_out(sample)
sample = self.conv_act(sample)
sample = self.conv_out(sample)
return sample
class Decoder(nn.Module):
r"""
The `Decoder` layer of a variational autoencoder that decodes its latent representation into an output sample.
Args:
in_channels (`int`, *optional*, defaults to 3):
The number of input channels.
out_channels (`int`, *optional*, defaults to 3):
The number of output channels.
up_block_types (`Tuple[str, ...]`, *optional*, defaults to `("UpDecoderBlock2D",)`):
The types of up blocks to use. See `~diffusers.models.unet_2d_blocks.get_up_block` for available options.
block_out_channels (`Tuple[int, ...]`, *optional*, defaults to `(64,)`):
The number of output channels for each block.
layers_per_block (`int`, *optional*, defaults to 2):
The number of layers per block.
norm_num_groups (`int`, *optional*, defaults to 32):
The number of groups for normalization.
act_fn (`str`, *optional*, defaults to `"silu"`):
The activation function to use. See `~diffusers.models.activations.get_activation` for available options.
norm_type (`str`, *optional*, defaults to `"group"`):
The normalization type to use. Can be either `"group"` or `"spatial"`.
"""
def __init__(
self,
in_channels: int = 3,
out_channels: int = 3,
up_block_types: Tuple[str, ...] = ("UpDecoderBlock2D",),
block_out_channels: Tuple[int, ...] = (64,),
layers_per_block: int = 2,
norm_num_groups: int = 32,
act_fn: str = "silu",
norm_type: str = "group", # group, spatial
mid_block_add_attention=True,
):
super().__init__()
self.layers_per_block = layers_per_block
self.conv_in = nn.Conv2d(
in_channels,
block_out_channels[-1],
kernel_size=3,
stride=1,
padding=1,
)
self.mid_block = None
self.up_blocks = nn.ModuleList([])
temb_channels = in_channels if norm_type == "spatial" else None
# mid
self.mid_block = UNetMidBlock2D(
in_channels=block_out_channels[-1],
resnet_eps=1e-6,
resnet_act_fn=act_fn,
output_scale_factor=1,
resnet_time_scale_shift="default" if norm_type == "group" else norm_type,
attention_head_dim=block_out_channels[-1],
resnet_groups=norm_num_groups,
temb_channels=temb_channels,
add_attention=mid_block_add_attention,
)
# up
reversed_block_out_channels = list(reversed(block_out_channels))
output_channel = reversed_block_out_channels[0]
for i, up_block_type in enumerate(up_block_types):
prev_output_channel = output_channel
output_channel = reversed_block_out_channels[i]
is_final_block = i == len(block_out_channels) - 1
up_block = get_up_block(
up_block_type,
num_layers=self.layers_per_block + 1,
in_channels=prev_output_channel,
out_channels=output_channel,
prev_output_channel=None,
add_upsample=not is_final_block,
resnet_eps=1e-6,
resnet_act_fn=act_fn,
resnet_groups=norm_num_groups,
attention_head_dim=output_channel,
temb_channels=temb_channels,
resnet_time_scale_shift=norm_type,
)
self.up_blocks.append(up_block)
prev_output_channel = output_channel
# out
if norm_type == "spatial":
self.conv_norm_out = SpatialNorm(block_out_channels[0], temb_channels)
else:
self.conv_norm_out = nn.GroupNorm(num_channels=block_out_channels[0], num_groups=norm_num_groups, eps=1e-6)
self.conv_act = nn.SiLU()
self.conv_out = nn.Conv2d(block_out_channels[0], out_channels, 3, padding=1)
self.gradient_checkpointing = False
def forward(
self,
sample: torch.FloatTensor,
latent_embeds: Optional[torch.FloatTensor] = None,
) -> torch.FloatTensor:
r"""The forward method of the `Decoder` class."""
sample = self.conv_in(sample)
upscale_dtype = next(iter(self.up_blocks.parameters())).dtype
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
# middle
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.mid_block),
sample,
latent_embeds,
use_reentrant=False,
)
sample = sample.to(upscale_dtype)
# up
for up_block in self.up_blocks:
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(up_block),
sample,
latent_embeds,
use_reentrant=False,
)
else:
# middle
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.mid_block), sample, latent_embeds
)
sample = sample.to(upscale_dtype)
# up
for up_block in self.up_blocks:
sample = torch.utils.checkpoint.checkpoint(create_custom_forward(up_block), sample, latent_embeds)
else:
# middle
sample = self.mid_block(sample, latent_embeds)
sample = sample.to(upscale_dtype)
# up
for up_block in self.up_blocks:
sample = up_block(sample, latent_embeds)
# post-process
if latent_embeds is None:
sample = self.conv_norm_out(sample)
else:
sample = self.conv_norm_out(sample, latent_embeds)
sample = self.conv_act(sample)
sample = self.conv_out(sample)
return sample
class UpSample(nn.Module):
r"""
The `UpSample` layer of a variational autoencoder that upsamples its input.
Args:
in_channels (`int`, *optional*, defaults to 3):
The number of input channels.
out_channels (`int`, *optional*, defaults to 3):
The number of output channels.
"""
def __init__(
self,
in_channels: int,
out_channels: int,
) -> None:
super().__init__()
self.in_channels = in_channels
self.out_channels = out_channels
self.deconv = nn.ConvTranspose2d(in_channels, out_channels, kernel_size=4, stride=2, padding=1)
def forward(self, x: torch.FloatTensor) -> torch.FloatTensor:
r"""The forward method of the `UpSample` class."""
x = torch.relu(x)
x = self.deconv(x)
return x
class MaskConditionEncoder(nn.Module):
"""
used in AsymmetricAutoencoderKL
"""
def __init__(
self,
in_ch: int,
out_ch: int = 192,
res_ch: int = 768,
stride: int = 16,
) -> None:
super().__init__()
channels = []
while stride > 1:
stride = stride // 2
in_ch_ = out_ch * 2
if out_ch > res_ch:
out_ch = res_ch
if stride == 1:
in_ch_ = res_ch
channels.append((in_ch_, out_ch))
out_ch *= 2
out_channels = []
for _in_ch, _out_ch in channels:
out_channels.append(_out_ch)
out_channels.append(channels[-1][0])
layers = []
in_ch_ = in_ch
for l in range(len(out_channels)):
out_ch_ = out_channels[l]
if l == 0 or l == 1:
layers.append(nn.Conv2d(in_ch_, out_ch_, kernel_size=3, stride=1, padding=1))
else:
layers.append(nn.Conv2d(in_ch_, out_ch_, kernel_size=4, stride=2, padding=1))
in_ch_ = out_ch_
self.layers = nn.Sequential(*layers)
def forward(self, x: torch.FloatTensor, mask=None) -> torch.FloatTensor:
r"""The forward method of the `MaskConditionEncoder` class."""
out = {}
for l in range(len(self.layers)):
layer = self.layers[l]
x = layer(x)
out[str(tuple(x.shape))] = x
x = torch.relu(x)
return out
class MaskConditionDecoder(nn.Module):
r"""The `MaskConditionDecoder` should be used in combination with [`AsymmetricAutoencoderKL`] to enhance the model's
decoder with a conditioner on the mask and masked image.
Args:
in_channels (`int`, *optional*, defaults to 3):
The number of input channels.
out_channels (`int`, *optional*, defaults to 3):
The number of output channels.
up_block_types (`Tuple[str, ...]`, *optional*, defaults to `("UpDecoderBlock2D",)`):
The types of up blocks to use. See `~diffusers.models.unet_2d_blocks.get_up_block` for available options.
block_out_channels (`Tuple[int, ...]`, *optional*, defaults to `(64,)`):
The number of output channels for each block.
layers_per_block (`int`, *optional*, defaults to 2):
The number of layers per block.
norm_num_groups (`int`, *optional*, defaults to 32):
The number of groups for normalization.
act_fn (`str`, *optional*, defaults to `"silu"`):
The activation function to use. See `~diffusers.models.activations.get_activation` for available options.
norm_type (`str`, *optional*, defaults to `"group"`):
The normalization type to use. Can be either `"group"` or `"spatial"`.
"""
def __init__(
self,
in_channels: int = 3,
out_channels: int = 3,
up_block_types: Tuple[str, ...] = ("UpDecoderBlock2D",),
block_out_channels: Tuple[int, ...] = (64,),
layers_per_block: int = 2,
norm_num_groups: int = 32,
act_fn: str = "silu",
norm_type: str = "group", # group, spatial
):
super().__init__()
self.layers_per_block = layers_per_block
self.conv_in = nn.Conv2d(
in_channels,
block_out_channels[-1],
kernel_size=3,
stride=1,
padding=1,
)
self.mid_block = None
self.up_blocks = nn.ModuleList([])
temb_channels = in_channels if norm_type == "spatial" else None
# mid
self.mid_block = UNetMidBlock2D(
in_channels=block_out_channels[-1],
resnet_eps=1e-6,
resnet_act_fn=act_fn,
output_scale_factor=1,
resnet_time_scale_shift="default" if norm_type == "group" else norm_type,
attention_head_dim=block_out_channels[-1],
resnet_groups=norm_num_groups,
temb_channels=temb_channels,
)
# up
reversed_block_out_channels = list(reversed(block_out_channels))
output_channel = reversed_block_out_channels[0]
for i, up_block_type in enumerate(up_block_types):
prev_output_channel = output_channel
output_channel = reversed_block_out_channels[i]
is_final_block = i == len(block_out_channels) - 1
up_block = get_up_block(
up_block_type,
num_layers=self.layers_per_block + 1,
in_channels=prev_output_channel,
out_channels=output_channel,
prev_output_channel=None,
add_upsample=not is_final_block,
resnet_eps=1e-6,
resnet_act_fn=act_fn,
resnet_groups=norm_num_groups,
attention_head_dim=output_channel,
temb_channels=temb_channels,
resnet_time_scale_shift=norm_type,
)
self.up_blocks.append(up_block)
prev_output_channel = output_channel
# condition encoder
self.condition_encoder = MaskConditionEncoder(
in_ch=out_channels,
out_ch=block_out_channels[0],
res_ch=block_out_channels[-1],
)
# out
if norm_type == "spatial":
self.conv_norm_out = SpatialNorm(block_out_channels[0], temb_channels)
else:
self.conv_norm_out = nn.GroupNorm(num_channels=block_out_channels[0], num_groups=norm_num_groups, eps=1e-6)
self.conv_act = nn.SiLU()
self.conv_out = nn.Conv2d(block_out_channels[0], out_channels, 3, padding=1)
self.gradient_checkpointing = False
def forward(
self,
z: torch.FloatTensor,
image: Optional[torch.FloatTensor] = None,
mask: Optional[torch.FloatTensor] = None,
latent_embeds: Optional[torch.FloatTensor] = None,
) -> torch.FloatTensor:
r"""The forward method of the `MaskConditionDecoder` class."""
sample = z
sample = self.conv_in(sample)
upscale_dtype = next(iter(self.up_blocks.parameters())).dtype
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
# middle
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.mid_block),
sample,
latent_embeds,
use_reentrant=False,
)
sample = sample.to(upscale_dtype)
# condition encoder
if image is not None and mask is not None:
masked_image = (1 - mask) * image
im_x = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.condition_encoder),
masked_image,
mask,
use_reentrant=False,
)
# up
for up_block in self.up_blocks:
if image is not None and mask is not None:
sample_ = im_x[str(tuple(sample.shape))]
mask_ = nn.functional.interpolate(mask, size=sample.shape[-2:], mode="nearest")
sample = sample * mask_ + sample_ * (1 - mask_)
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(up_block),
sample,
latent_embeds,
use_reentrant=False,
)
if image is not None and mask is not None:
sample = sample * mask + im_x[str(tuple(sample.shape))] * (1 - mask)
else:
# middle
sample = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.mid_block), sample, latent_embeds
)
sample = sample.to(upscale_dtype)
# condition encoder
if image is not None and mask is not None:
masked_image = (1 - mask) * image
im_x = torch.utils.checkpoint.checkpoint(
create_custom_forward(self.condition_encoder),
masked_image,
mask,
)
# up
for up_block in self.up_blocks:
if image is not None and mask is not None:
sample_ = im_x[str(tuple(sample.shape))]
mask_ = nn.functional.interpolate(mask, size=sample.shape[-2:], mode="nearest")
sample = sample * mask_ + sample_ * (1 - mask_)
sample = torch.utils.checkpoint.checkpoint(create_custom_forward(up_block), sample, latent_embeds)
if image is not None and mask is not None:
sample = sample * mask + im_x[str(tuple(sample.shape))] * (1 - mask)
else:
# middle
sample = self.mid_block(sample, latent_embeds)
sample = sample.to(upscale_dtype)
# condition encoder
if image is not None and mask is not None:
masked_image = (1 - mask) * image
im_x = self.condition_encoder(masked_image, mask)
# up
for up_block in self.up_blocks:
if image is not None and mask is not None:
sample_ = im_x[str(tuple(sample.shape))]
mask_ = nn.functional.interpolate(mask, size=sample.shape[-2:], mode="nearest")
sample = sample * mask_ + sample_ * (1 - mask_)
sample = up_block(sample, latent_embeds)
if image is not None and mask is not None:
sample = sample * mask + im_x[str(tuple(sample.shape))] * (1 - mask)
# post-process
if latent_embeds is None:
sample = self.conv_norm_out(sample)
else:
sample = self.conv_norm_out(sample, latent_embeds)
sample = self.conv_act(sample)
sample = self.conv_out(sample)
return sample
class VectorQuantizer(nn.Module):
"""
Improved version over VectorQuantizer, can be used as a drop-in replacement. Mostly avoids costly matrix
multiplications and allows for post-hoc remapping of indices.
"""
# NOTE: due to a bug the beta term was applied to the wrong term. for
# backwards compatibility we use the buggy version by default, but you can
# specify legacy=False to fix it.
def __init__(
self,
n_e: int,
vq_embed_dim: int,
beta: float,
remap=None,
unknown_index: str = "random",
sane_index_shape: bool = False,
legacy: bool = True,
):
super().__init__()
self.n_e = n_e
self.vq_embed_dim = vq_embed_dim
self.beta = beta
self.legacy = legacy
self.embedding = nn.Embedding(self.n_e, self.vq_embed_dim)
self.embedding.weight.data.uniform_(-1.0 / self.n_e, 1.0 / self.n_e)
self.remap = remap
if self.remap is not None:
self.register_buffer("used", torch.tensor(np.load(self.remap)))
self.used: torch.Tensor
self.re_embed = self.used.shape[0]
self.unknown_index = unknown_index # "random" or "extra" or integer
if self.unknown_index == "extra":
self.unknown_index = self.re_embed
self.re_embed = self.re_embed + 1
print(
f"Remapping {self.n_e} indices to {self.re_embed} indices. "
f"Using {self.unknown_index} for unknown indices."
)
else:
self.re_embed = n_e
self.sane_index_shape = sane_index_shape
def remap_to_used(self, inds: torch.LongTensor) -> torch.LongTensor:
ishape = inds.shape
assert len(ishape) > 1
inds = inds.reshape(ishape[0], -1)
used = self.used.to(inds)
match = (inds[:, :, None] == used[None, None, ...]).long()
new = match.argmax(-1)
unknown = match.sum(2) < 1
if self.unknown_index == "random":
new[unknown] = torch.randint(0, self.re_embed, size=new[unknown].shape).to(device=new.device)
else:
new[unknown] = self.unknown_index
return new.reshape(ishape)
def unmap_to_all(self, inds: torch.LongTensor) -> torch.LongTensor:
ishape = inds.shape
assert len(ishape) > 1
inds = inds.reshape(ishape[0], -1)
used = self.used.to(inds)
if self.re_embed > self.used.shape[0]: # extra token
inds[inds >= self.used.shape[0]] = 0 # simply set to zero
back = torch.gather(used[None, :][inds.shape[0] * [0], :], 1, inds)
return back.reshape(ishape)
def forward(self, z: torch.FloatTensor) -> Tuple[torch.FloatTensor, torch.FloatTensor, Tuple]:
# reshape z -> (batch, height, width, channel) and flatten
z = z.permute(0, 2, 3, 1).contiguous()
z_flattened = z.view(-1, self.vq_embed_dim)
# distances from z to embeddings e_j (z - e)^2 = z^2 + e^2 - 2 e * z
min_encoding_indices = torch.argmin(torch.cdist(z_flattened, self.embedding.weight), dim=1)
z_q = self.embedding(min_encoding_indices).view(z.shape)
perplexity = None
min_encodings = None
# compute loss for embedding
if not self.legacy:
loss = self.beta * torch.mean((z_q.detach() - z) ** 2) + torch.mean((z_q - z.detach()) ** 2)
else:
loss = torch.mean((z_q.detach() - z) ** 2) + self.beta * torch.mean((z_q - z.detach()) ** 2)
# preserve gradients
z_q: torch.FloatTensor = z + (z_q - z).detach()
# reshape back to match original input shape
z_q = z_q.permute(0, 3, 1, 2).contiguous()
if self.remap is not None:
min_encoding_indices = min_encoding_indices.reshape(z.shape[0], -1) # add batch axis
min_encoding_indices = self.remap_to_used(min_encoding_indices)
min_encoding_indices = min_encoding_indices.reshape(-1, 1) # flatten
if self.sane_index_shape:
min_encoding_indices = min_encoding_indices.reshape(z_q.shape[0], z_q.shape[2], z_q.shape[3])
return z_q, loss, (perplexity, min_encodings, min_encoding_indices)
def get_codebook_entry(self, indices: torch.LongTensor, shape: Tuple[int, ...]) -> torch.FloatTensor:
# shape specifying (batch, height, width, channel)
if self.remap is not None:
indices = indices.reshape(shape[0], -1) # add batch axis
indices = self.unmap_to_all(indices)
indices = indices.reshape(-1) # flatten again
# get quantized latent vectors
z_q: torch.FloatTensor = self.embedding(indices)
if shape is not None:
z_q = z_q.view(shape)
# reshape back to match original input shape
z_q = z_q.permute(0, 3, 1, 2).contiguous()
return z_q
class DiagonalGaussianDistribution(object):
def __init__(self, parameters: torch.Tensor, deterministic: bool = False):
self.parameters = parameters
self.mean, self.logvar = torch.chunk(parameters, 2, dim=1)
self.logvar = torch.clamp(self.logvar, -30.0, 20.0)
self.deterministic = deterministic
self.std = torch.exp(0.5 * self.logvar)
self.var = torch.exp(self.logvar)
if self.deterministic:
self.var = self.std = torch.zeros_like(
self.mean, device=self.parameters.device, dtype=self.parameters.dtype
)
def sample(self, generator: Optional[torch.Generator] = None) -> torch.FloatTensor:
# make sure sample is on the same device as the parameters and has same dtype
sample = randn_tensor(
self.mean.shape,
generator=generator,
device=self.parameters.device,
dtype=self.parameters.dtype,
)
x = self.mean + self.std * sample
return x
def kl(self, other: "DiagonalGaussianDistribution" = None) -> torch.Tensor:
if self.deterministic:
return torch.Tensor([0.0])
else:
if other is None:
return 0.5 * torch.sum(
torch.pow(self.mean, 2) + self.var - 1.0 - self.logvar,
dim=[1, 2, 3],
)
else:
return 0.5 * torch.sum(
torch.pow(self.mean - other.mean, 2) / other.var
+ self.var / other.var
- 1.0
- self.logvar
+ other.logvar,
dim=[1, 2, 3],
)
def nll(self, sample: torch.Tensor, dims: Tuple[int, ...] = [1, 2, 3]) -> torch.Tensor:
if self.deterministic:
return torch.Tensor([0.0])
logtwopi = np.log(2.0 * np.pi)
return 0.5 * torch.sum(
logtwopi + self.logvar + torch.pow(sample - self.mean, 2) / self.var,
dim=dims,
)
def mode(self) -> torch.Tensor:
return self.mean
class EncoderTiny(nn.Module):
r"""
The `EncoderTiny` layer is a simpler version of the `Encoder` layer.
Args:
in_channels (`int`):
The number of input channels.
out_channels (`int`):
The number of output channels.
num_blocks (`Tuple[int, ...]`):
Each value of the tuple represents a Conv2d layer followed by `value` number of `AutoencoderTinyBlock`'s to
use.
block_out_channels (`Tuple[int, ...]`):
The number of output channels for each block.
act_fn (`str`):
The activation function to use. See `~diffusers.models.activations.get_activation` for available options.
"""
def __init__(
self,
in_channels: int,
out_channels: int,
num_blocks: Tuple[int, ...],
block_out_channels: Tuple[int, ...],
act_fn: str,
):
super().__init__()
layers = []
for i, num_block in enumerate(num_blocks):
num_channels = block_out_channels[i]
if i == 0:
layers.append(nn.Conv2d(in_channels, num_channels, kernel_size=3, padding=1))
else:
layers.append(
nn.Conv2d(
num_channels,
num_channels,
kernel_size=3,
padding=1,
stride=2,
bias=False,
)
)
for _ in range(num_block):
layers.append(AutoencoderTinyBlock(num_channels, num_channels, act_fn))
layers.append(nn.Conv2d(block_out_channels[-1], out_channels, kernel_size=3, padding=1))
self.layers = nn.Sequential(*layers)
self.gradient_checkpointing = False
def forward(self, x: torch.FloatTensor) -> torch.FloatTensor:
r"""The forward method of the `EncoderTiny` class."""
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
x = torch.utils.checkpoint.checkpoint(create_custom_forward(self.layers), x, use_reentrant=False)
else:
x = torch.utils.checkpoint.checkpoint(create_custom_forward(self.layers), x)
else:
# scale image from [-1, 1] to [0, 1] to match TAESD convention
x = self.layers(x.add(1).div(2))
return x
class DecoderTiny(nn.Module):
r"""
The `DecoderTiny` layer is a simpler version of the `Decoder` layer.
Args:
in_channels (`int`):
The number of input channels.
out_channels (`int`):
The number of output channels.
num_blocks (`Tuple[int, ...]`):
Each value of the tuple represents a Conv2d layer followed by `value` number of `AutoencoderTinyBlock`'s to
use.
block_out_channels (`Tuple[int, ...]`):
The number of output channels for each block.
upsampling_scaling_factor (`int`):
The scaling factor to use for upsampling.
act_fn (`str`):
The activation function to use. See `~diffusers.models.activations.get_activation` for available options.
"""
def __init__(
self,
in_channels: int,
out_channels: int,
num_blocks: Tuple[int, ...],
block_out_channels: Tuple[int, ...],
upsampling_scaling_factor: int,
act_fn: str,
):
super().__init__()
layers = [
nn.Conv2d(in_channels, block_out_channels[0], kernel_size=3, padding=1),
get_activation(act_fn),
]
for i, num_block in enumerate(num_blocks):
is_final_block = i == (len(num_blocks) - 1)
num_channels = block_out_channels[i]
for _ in range(num_block):
layers.append(AutoencoderTinyBlock(num_channels, num_channels, act_fn))
if not is_final_block:
layers.append(nn.Upsample(scale_factor=upsampling_scaling_factor))
conv_out_channel = num_channels if not is_final_block else out_channels
layers.append(
nn.Conv2d(
num_channels,
conv_out_channel,
kernel_size=3,
padding=1,
bias=is_final_block,
)
)
self.layers = nn.Sequential(*layers)
self.gradient_checkpointing = False
def forward(self, x: torch.FloatTensor) -> torch.FloatTensor:
r"""The forward method of the `DecoderTiny` class."""
# Clamp.
x = torch.tanh(x / 3) * 3
if self.training and self.gradient_checkpointing:
def create_custom_forward(module):
def custom_forward(*inputs):
return module(*inputs)
return custom_forward
if is_torch_version(">=", "1.11.0"):
x = torch.utils.checkpoint.checkpoint(create_custom_forward(self.layers), x, use_reentrant=False)
else:
x = torch.utils.checkpoint.checkpoint(create_custom_forward(self.layers), x)
else:
x = self.layers(x)
# scale image from [0, 1] to [-1, 1] to match diffusers convention
return x.mul(2).sub(1)
| diffusers/src/diffusers/models/autoencoders/vae.py/0 | {
"file_path": "diffusers/src/diffusers/models/autoencoders/vae.py",
"repo_id": "diffusers",
"token_count": 18215
} | 123 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import flax.linen as nn
import jax
import jax.numpy as jnp
class FlaxUpsample2D(nn.Module):
out_channels: int
dtype: jnp.dtype = jnp.float32
def setup(self):
self.conv = nn.Conv(
self.out_channels,
kernel_size=(3, 3),
strides=(1, 1),
padding=((1, 1), (1, 1)),
dtype=self.dtype,
)
def __call__(self, hidden_states):
batch, height, width, channels = hidden_states.shape
hidden_states = jax.image.resize(
hidden_states,
shape=(batch, height * 2, width * 2, channels),
method="nearest",
)
hidden_states = self.conv(hidden_states)
return hidden_states
class FlaxDownsample2D(nn.Module):
out_channels: int
dtype: jnp.dtype = jnp.float32
def setup(self):
self.conv = nn.Conv(
self.out_channels,
kernel_size=(3, 3),
strides=(2, 2),
padding=((1, 1), (1, 1)), # padding="VALID",
dtype=self.dtype,
)
def __call__(self, hidden_states):
# pad = ((0, 0), (0, 1), (0, 1), (0, 0)) # pad height and width dim
# hidden_states = jnp.pad(hidden_states, pad_width=pad)
hidden_states = self.conv(hidden_states)
return hidden_states
class FlaxResnetBlock2D(nn.Module):
in_channels: int
out_channels: int = None
dropout_prob: float = 0.0
use_nin_shortcut: bool = None
dtype: jnp.dtype = jnp.float32
def setup(self):
out_channels = self.in_channels if self.out_channels is None else self.out_channels
self.norm1 = nn.GroupNorm(num_groups=32, epsilon=1e-5)
self.conv1 = nn.Conv(
out_channels,
kernel_size=(3, 3),
strides=(1, 1),
padding=((1, 1), (1, 1)),
dtype=self.dtype,
)
self.time_emb_proj = nn.Dense(out_channels, dtype=self.dtype)
self.norm2 = nn.GroupNorm(num_groups=32, epsilon=1e-5)
self.dropout = nn.Dropout(self.dropout_prob)
self.conv2 = nn.Conv(
out_channels,
kernel_size=(3, 3),
strides=(1, 1),
padding=((1, 1), (1, 1)),
dtype=self.dtype,
)
use_nin_shortcut = self.in_channels != out_channels if self.use_nin_shortcut is None else self.use_nin_shortcut
self.conv_shortcut = None
if use_nin_shortcut:
self.conv_shortcut = nn.Conv(
out_channels,
kernel_size=(1, 1),
strides=(1, 1),
padding="VALID",
dtype=self.dtype,
)
def __call__(self, hidden_states, temb, deterministic=True):
residual = hidden_states
hidden_states = self.norm1(hidden_states)
hidden_states = nn.swish(hidden_states)
hidden_states = self.conv1(hidden_states)
temb = self.time_emb_proj(nn.swish(temb))
temb = jnp.expand_dims(jnp.expand_dims(temb, 1), 1)
hidden_states = hidden_states + temb
hidden_states = self.norm2(hidden_states)
hidden_states = nn.swish(hidden_states)
hidden_states = self.dropout(hidden_states, deterministic)
hidden_states = self.conv2(hidden_states)
if self.conv_shortcut is not None:
residual = self.conv_shortcut(residual)
return hidden_states + residual
| diffusers/src/diffusers/models/resnet_flax.py/0 | {
"file_path": "diffusers/src/diffusers/models/resnet_flax.py",
"repo_id": "diffusers",
"token_count": 1885
} | 124 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from dataclasses import dataclass
from typing import Optional, Tuple, Union
import torch
import torch.nn as nn
from ...configuration_utils import ConfigMixin, register_to_config
from ...utils import BaseOutput
from ..embeddings import GaussianFourierProjection, TimestepEmbedding, Timesteps
from ..modeling_utils import ModelMixin
from .unet_1d_blocks import get_down_block, get_mid_block, get_out_block, get_up_block
@dataclass
class UNet1DOutput(BaseOutput):
"""
The output of [`UNet1DModel`].
Args:
sample (`torch.FloatTensor` of shape `(batch_size, num_channels, sample_size)`):
The hidden states output from the last layer of the model.
"""
sample: torch.FloatTensor
class UNet1DModel(ModelMixin, ConfigMixin):
r"""
A 1D UNet model that takes a noisy sample and a timestep and returns a sample shaped output.
This model inherits from [`ModelMixin`]. Check the superclass documentation for it's generic methods implemented
for all models (such as downloading or saving).
Parameters:
sample_size (`int`, *optional*): Default length of sample. Should be adaptable at runtime.
in_channels (`int`, *optional*, defaults to 2): Number of channels in the input sample.
out_channels (`int`, *optional*, defaults to 2): Number of channels in the output.
extra_in_channels (`int`, *optional*, defaults to 0):
Number of additional channels to be added to the input of the first down block. Useful for cases where the
input data has more channels than what the model was initially designed for.
time_embedding_type (`str`, *optional*, defaults to `"fourier"`): Type of time embedding to use.
freq_shift (`float`, *optional*, defaults to 0.0): Frequency shift for Fourier time embedding.
flip_sin_to_cos (`bool`, *optional*, defaults to `False`):
Whether to flip sin to cos for Fourier time embedding.
down_block_types (`Tuple[str]`, *optional*, defaults to `("DownBlock1DNoSkip", "DownBlock1D", "AttnDownBlock1D")`):
Tuple of downsample block types.
up_block_types (`Tuple[str]`, *optional*, defaults to `("AttnUpBlock1D", "UpBlock1D", "UpBlock1DNoSkip")`):
Tuple of upsample block types.
block_out_channels (`Tuple[int]`, *optional*, defaults to `(32, 32, 64)`):
Tuple of block output channels.
mid_block_type (`str`, *optional*, defaults to `"UNetMidBlock1D"`): Block type for middle of UNet.
out_block_type (`str`, *optional*, defaults to `None`): Optional output processing block of UNet.
act_fn (`str`, *optional*, defaults to `None`): Optional activation function in UNet blocks.
norm_num_groups (`int`, *optional*, defaults to 8): The number of groups for normalization.
layers_per_block (`int`, *optional*, defaults to 1): The number of layers per block.
downsample_each_block (`int`, *optional*, defaults to `False`):
Experimental feature for using a UNet without upsampling.
"""
@register_to_config
def __init__(
self,
sample_size: int = 65536,
sample_rate: Optional[int] = None,
in_channels: int = 2,
out_channels: int = 2,
extra_in_channels: int = 0,
time_embedding_type: str = "fourier",
flip_sin_to_cos: bool = True,
use_timestep_embedding: bool = False,
freq_shift: float = 0.0,
down_block_types: Tuple[str] = ("DownBlock1DNoSkip", "DownBlock1D", "AttnDownBlock1D"),
up_block_types: Tuple[str] = ("AttnUpBlock1D", "UpBlock1D", "UpBlock1DNoSkip"),
mid_block_type: Tuple[str] = "UNetMidBlock1D",
out_block_type: str = None,
block_out_channels: Tuple[int] = (32, 32, 64),
act_fn: str = None,
norm_num_groups: int = 8,
layers_per_block: int = 1,
downsample_each_block: bool = False,
):
super().__init__()
self.sample_size = sample_size
# time
if time_embedding_type == "fourier":
self.time_proj = GaussianFourierProjection(
embedding_size=8, set_W_to_weight=False, log=False, flip_sin_to_cos=flip_sin_to_cos
)
timestep_input_dim = 2 * block_out_channels[0]
elif time_embedding_type == "positional":
self.time_proj = Timesteps(
block_out_channels[0], flip_sin_to_cos=flip_sin_to_cos, downscale_freq_shift=freq_shift
)
timestep_input_dim = block_out_channels[0]
if use_timestep_embedding:
time_embed_dim = block_out_channels[0] * 4
self.time_mlp = TimestepEmbedding(
in_channels=timestep_input_dim,
time_embed_dim=time_embed_dim,
act_fn=act_fn,
out_dim=block_out_channels[0],
)
self.down_blocks = nn.ModuleList([])
self.mid_block = None
self.up_blocks = nn.ModuleList([])
self.out_block = None
# down
output_channel = in_channels
for i, down_block_type in enumerate(down_block_types):
input_channel = output_channel
output_channel = block_out_channels[i]
if i == 0:
input_channel += extra_in_channels
is_final_block = i == len(block_out_channels) - 1
down_block = get_down_block(
down_block_type,
num_layers=layers_per_block,
in_channels=input_channel,
out_channels=output_channel,
temb_channels=block_out_channels[0],
add_downsample=not is_final_block or downsample_each_block,
)
self.down_blocks.append(down_block)
# mid
self.mid_block = get_mid_block(
mid_block_type,
in_channels=block_out_channels[-1],
mid_channels=block_out_channels[-1],
out_channels=block_out_channels[-1],
embed_dim=block_out_channels[0],
num_layers=layers_per_block,
add_downsample=downsample_each_block,
)
# up
reversed_block_out_channels = list(reversed(block_out_channels))
output_channel = reversed_block_out_channels[0]
if out_block_type is None:
final_upsample_channels = out_channels
else:
final_upsample_channels = block_out_channels[0]
for i, up_block_type in enumerate(up_block_types):
prev_output_channel = output_channel
output_channel = (
reversed_block_out_channels[i + 1] if i < len(up_block_types) - 1 else final_upsample_channels
)
is_final_block = i == len(block_out_channels) - 1
up_block = get_up_block(
up_block_type,
num_layers=layers_per_block,
in_channels=prev_output_channel,
out_channels=output_channel,
temb_channels=block_out_channels[0],
add_upsample=not is_final_block,
)
self.up_blocks.append(up_block)
prev_output_channel = output_channel
# out
num_groups_out = norm_num_groups if norm_num_groups is not None else min(block_out_channels[0] // 4, 32)
self.out_block = get_out_block(
out_block_type=out_block_type,
num_groups_out=num_groups_out,
embed_dim=block_out_channels[0],
out_channels=out_channels,
act_fn=act_fn,
fc_dim=block_out_channels[-1] // 4,
)
def forward(
self,
sample: torch.FloatTensor,
timestep: Union[torch.Tensor, float, int],
return_dict: bool = True,
) -> Union[UNet1DOutput, Tuple]:
r"""
The [`UNet1DModel`] forward method.
Args:
sample (`torch.FloatTensor`):
The noisy input tensor with the following shape `(batch_size, num_channels, sample_size)`.
timestep (`torch.FloatTensor` or `float` or `int`): The number of timesteps to denoise an input.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~models.unet_1d.UNet1DOutput`] instead of a plain tuple.
Returns:
[`~models.unet_1d.UNet1DOutput`] or `tuple`:
If `return_dict` is True, an [`~models.unet_1d.UNet1DOutput`] is returned, otherwise a `tuple` is
returned where the first element is the sample tensor.
"""
# 1. time
timesteps = timestep
if not torch.is_tensor(timesteps):
timesteps = torch.tensor([timesteps], dtype=torch.long, device=sample.device)
elif torch.is_tensor(timesteps) and len(timesteps.shape) == 0:
timesteps = timesteps[None].to(sample.device)
timestep_embed = self.time_proj(timesteps)
if self.config.use_timestep_embedding:
timestep_embed = self.time_mlp(timestep_embed)
else:
timestep_embed = timestep_embed[..., None]
timestep_embed = timestep_embed.repeat([1, 1, sample.shape[2]]).to(sample.dtype)
timestep_embed = timestep_embed.broadcast_to((sample.shape[:1] + timestep_embed.shape[1:]))
# 2. down
down_block_res_samples = ()
for downsample_block in self.down_blocks:
sample, res_samples = downsample_block(hidden_states=sample, temb=timestep_embed)
down_block_res_samples += res_samples
# 3. mid
if self.mid_block:
sample = self.mid_block(sample, timestep_embed)
# 4. up
for i, upsample_block in enumerate(self.up_blocks):
res_samples = down_block_res_samples[-1:]
down_block_res_samples = down_block_res_samples[:-1]
sample = upsample_block(sample, res_hidden_states_tuple=res_samples, temb=timestep_embed)
# 5. post-process
if self.out_block:
sample = self.out_block(sample, timestep_embed)
if not return_dict:
return (sample,)
return UNet1DOutput(sample=sample)
| diffusers/src/diffusers/models/unets/unet_1d.py/0 | {
"file_path": "diffusers/src/diffusers/models/unets/unet_1d.py",
"repo_id": "diffusers",
"token_count": 4859
} | 125 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from dataclasses import dataclass
from typing import Optional, Tuple, Union
import torch
import torch.nn as nn
from ..configuration_utils import ConfigMixin, register_to_config
from ..utils import BaseOutput
from ..utils.accelerate_utils import apply_forward_hook
from .autoencoders.vae import Decoder, DecoderOutput, Encoder, VectorQuantizer
from .modeling_utils import ModelMixin
@dataclass
class VQEncoderOutput(BaseOutput):
"""
Output of VQModel encoding method.
Args:
latents (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
The encoded output sample from the last layer of the model.
"""
latents: torch.FloatTensor
class VQModel(ModelMixin, ConfigMixin):
r"""
A VQ-VAE model for decoding latent representations.
This model inherits from [`ModelMixin`]. Check the superclass documentation for it's generic methods implemented
for all models (such as downloading or saving).
Parameters:
in_channels (int, *optional*, defaults to 3): Number of channels in the input image.
out_channels (int, *optional*, defaults to 3): Number of channels in the output.
down_block_types (`Tuple[str]`, *optional*, defaults to `("DownEncoderBlock2D",)`):
Tuple of downsample block types.
up_block_types (`Tuple[str]`, *optional*, defaults to `("UpDecoderBlock2D",)`):
Tuple of upsample block types.
block_out_channels (`Tuple[int]`, *optional*, defaults to `(64,)`):
Tuple of block output channels.
layers_per_block (`int`, *optional*, defaults to `1`): Number of layers per block.
act_fn (`str`, *optional*, defaults to `"silu"`): The activation function to use.
latent_channels (`int`, *optional*, defaults to `3`): Number of channels in the latent space.
sample_size (`int`, *optional*, defaults to `32`): Sample input size.
num_vq_embeddings (`int`, *optional*, defaults to `256`): Number of codebook vectors in the VQ-VAE.
norm_num_groups (`int`, *optional*, defaults to `32`): Number of groups for normalization layers.
vq_embed_dim (`int`, *optional*): Hidden dim of codebook vectors in the VQ-VAE.
scaling_factor (`float`, *optional*, defaults to `0.18215`):
The component-wise standard deviation of the trained latent space computed using the first batch of the
training set. This is used to scale the latent space to have unit variance when training the diffusion
model. The latents are scaled with the formula `z = z * scaling_factor` before being passed to the
diffusion model. When decoding, the latents are scaled back to the original scale with the formula: `z = 1
/ scaling_factor * z`. For more details, refer to sections 4.3.2 and D.1 of the [High-Resolution Image
Synthesis with Latent Diffusion Models](https://arxiv.org/abs/2112.10752) paper.
norm_type (`str`, *optional*, defaults to `"group"`):
Type of normalization layer to use. Can be one of `"group"` or `"spatial"`.
"""
@register_to_config
def __init__(
self,
in_channels: int = 3,
out_channels: int = 3,
down_block_types: Tuple[str, ...] = ("DownEncoderBlock2D",),
up_block_types: Tuple[str, ...] = ("UpDecoderBlock2D",),
block_out_channels: Tuple[int, ...] = (64,),
layers_per_block: int = 1,
act_fn: str = "silu",
latent_channels: int = 3,
sample_size: int = 32,
num_vq_embeddings: int = 256,
norm_num_groups: int = 32,
vq_embed_dim: Optional[int] = None,
scaling_factor: float = 0.18215,
norm_type: str = "group", # group, spatial
mid_block_add_attention=True,
lookup_from_codebook=False,
force_upcast=False,
):
super().__init__()
# pass init params to Encoder
self.encoder = Encoder(
in_channels=in_channels,
out_channels=latent_channels,
down_block_types=down_block_types,
block_out_channels=block_out_channels,
layers_per_block=layers_per_block,
act_fn=act_fn,
norm_num_groups=norm_num_groups,
double_z=False,
mid_block_add_attention=mid_block_add_attention,
)
vq_embed_dim = vq_embed_dim if vq_embed_dim is not None else latent_channels
self.quant_conv = nn.Conv2d(latent_channels, vq_embed_dim, 1)
self.quantize = VectorQuantizer(num_vq_embeddings, vq_embed_dim, beta=0.25, remap=None, sane_index_shape=False)
self.post_quant_conv = nn.Conv2d(vq_embed_dim, latent_channels, 1)
# pass init params to Decoder
self.decoder = Decoder(
in_channels=latent_channels,
out_channels=out_channels,
up_block_types=up_block_types,
block_out_channels=block_out_channels,
layers_per_block=layers_per_block,
act_fn=act_fn,
norm_num_groups=norm_num_groups,
norm_type=norm_type,
mid_block_add_attention=mid_block_add_attention,
)
@apply_forward_hook
def encode(self, x: torch.FloatTensor, return_dict: bool = True) -> VQEncoderOutput:
h = self.encoder(x)
h = self.quant_conv(h)
if not return_dict:
return (h,)
return VQEncoderOutput(latents=h)
@apply_forward_hook
def decode(
self, h: torch.FloatTensor, force_not_quantize: bool = False, return_dict: bool = True, shape=None
) -> Union[DecoderOutput, torch.FloatTensor]:
# also go through quantization layer
if not force_not_quantize:
quant, _, _ = self.quantize(h)
elif self.config.lookup_from_codebook:
quant = self.quantize.get_codebook_entry(h, shape)
else:
quant = h
quant2 = self.post_quant_conv(quant)
dec = self.decoder(quant2, quant if self.config.norm_type == "spatial" else None)
if not return_dict:
return (dec,)
return DecoderOutput(sample=dec)
def forward(
self, sample: torch.FloatTensor, return_dict: bool = True
) -> Union[DecoderOutput, Tuple[torch.FloatTensor, ...]]:
r"""
The [`VQModel`] forward method.
Args:
sample (`torch.FloatTensor`): Input sample.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`models.vq_model.VQEncoderOutput`] instead of a plain tuple.
Returns:
[`~models.vq_model.VQEncoderOutput`] or `tuple`:
If return_dict is True, a [`~models.vq_model.VQEncoderOutput`] is returned, otherwise a plain `tuple`
is returned.
"""
h = self.encode(sample).latents
dec = self.decode(h).sample
if not return_dict:
return (dec,)
return DecoderOutput(sample=dec)
| diffusers/src/diffusers/models/vq_model.py/0 | {
"file_path": "diffusers/src/diffusers/models/vq_model.py",
"repo_id": "diffusers",
"token_count": 3140
} | 126 |
# Copyright 2023 CVSSP, ByteDance and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
from typing import Any, Callable, Dict, List, Optional, Union
import numpy as np
import torch
from transformers import (
ClapFeatureExtractor,
ClapModel,
GPT2Model,
RobertaTokenizer,
RobertaTokenizerFast,
SpeechT5HifiGan,
T5EncoderModel,
T5Tokenizer,
T5TokenizerFast,
)
from ...models import AutoencoderKL
from ...schedulers import KarrasDiffusionSchedulers
from ...utils import (
is_accelerate_available,
is_accelerate_version,
is_librosa_available,
logging,
replace_example_docstring,
)
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import AudioPipelineOutput, DiffusionPipeline
from .modeling_audioldm2 import AudioLDM2ProjectionModel, AudioLDM2UNet2DConditionModel
if is_librosa_available():
import librosa
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import scipy
>>> import torch
>>> from diffusers import AudioLDM2Pipeline
>>> repo_id = "cvssp/audioldm2"
>>> pipe = AudioLDM2Pipeline.from_pretrained(repo_id, torch_dtype=torch.float16)
>>> pipe = pipe.to("cuda")
>>> # define the prompts
>>> prompt = "The sound of a hammer hitting a wooden surface."
>>> negative_prompt = "Low quality."
>>> # set the seed for generator
>>> generator = torch.Generator("cuda").manual_seed(0)
>>> # run the generation
>>> audio = pipe(
... prompt,
... negative_prompt=negative_prompt,
... num_inference_steps=200,
... audio_length_in_s=10.0,
... num_waveforms_per_prompt=3,
... generator=generator,
... ).audios
>>> # save the best audio sample (index 0) as a .wav file
>>> scipy.io.wavfile.write("techno.wav", rate=16000, data=audio[0])
```
"""
def prepare_inputs_for_generation(
inputs_embeds,
attention_mask=None,
past_key_values=None,
**kwargs,
):
if past_key_values is not None:
# only last token for inputs_embeds if past is defined in kwargs
inputs_embeds = inputs_embeds[:, -1:]
return {
"inputs_embeds": inputs_embeds,
"attention_mask": attention_mask,
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
}
class AudioLDM2Pipeline(DiffusionPipeline):
r"""
Pipeline for text-to-audio generation using AudioLDM2.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
text_encoder ([`~transformers.ClapModel`]):
First frozen text-encoder. AudioLDM2 uses the joint audio-text embedding model
[CLAP](https://huggingface.co/docs/transformers/model_doc/clap#transformers.CLAPTextModelWithProjection),
specifically the [laion/clap-htsat-unfused](https://huggingface.co/laion/clap-htsat-unfused) variant. The
text branch is used to encode the text prompt to a prompt embedding. The full audio-text model is used to
rank generated waveforms against the text prompt by computing similarity scores.
text_encoder_2 ([`~transformers.T5EncoderModel`]):
Second frozen text-encoder. AudioLDM2 uses the encoder of
[T5](https://huggingface.co/docs/transformers/model_doc/t5#transformers.T5EncoderModel), specifically the
[google/flan-t5-large](https://huggingface.co/google/flan-t5-large) variant.
projection_model ([`AudioLDM2ProjectionModel`]):
A trained model used to linearly project the hidden-states from the first and second text encoder models
and insert learned SOS and EOS token embeddings. The projected hidden-states from the two text encoders are
concatenated to give the input to the language model.
language_model ([`~transformers.GPT2Model`]):
An auto-regressive language model used to generate a sequence of hidden-states conditioned on the projected
outputs from the two text encoders.
tokenizer ([`~transformers.RobertaTokenizer`]):
Tokenizer to tokenize text for the first frozen text-encoder.
tokenizer_2 ([`~transformers.T5Tokenizer`]):
Tokenizer to tokenize text for the second frozen text-encoder.
feature_extractor ([`~transformers.ClapFeatureExtractor`]):
Feature extractor to pre-process generated audio waveforms to log-mel spectrograms for automatic scoring.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded audio latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded audio latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
vocoder ([`~transformers.SpeechT5HifiGan`]):
Vocoder of class `SpeechT5HifiGan` to convert the mel-spectrogram latents to the final audio waveform.
"""
def __init__(
self,
vae: AutoencoderKL,
text_encoder: ClapModel,
text_encoder_2: T5EncoderModel,
projection_model: AudioLDM2ProjectionModel,
language_model: GPT2Model,
tokenizer: Union[RobertaTokenizer, RobertaTokenizerFast],
tokenizer_2: Union[T5Tokenizer, T5TokenizerFast],
feature_extractor: ClapFeatureExtractor,
unet: AudioLDM2UNet2DConditionModel,
scheduler: KarrasDiffusionSchedulers,
vocoder: SpeechT5HifiGan,
):
super().__init__()
self.register_modules(
vae=vae,
text_encoder=text_encoder,
text_encoder_2=text_encoder_2,
projection_model=projection_model,
language_model=language_model,
tokenizer=tokenizer,
tokenizer_2=tokenizer_2,
feature_extractor=feature_extractor,
unet=unet,
scheduler=scheduler,
vocoder=vocoder,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_slicing
def enable_vae_slicing(self):
r"""
Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to
compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.
"""
self.vae.enable_slicing()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_slicing
def disable_vae_slicing(self):
r"""
Disable sliced VAE decoding. If `enable_vae_slicing` was previously enabled, this method will go back to
computing decoding in one step.
"""
self.vae.disable_slicing()
def enable_model_cpu_offload(self, gpu_id=0):
r"""
Offloads all models to CPU using accelerate, reducing memory usage with a low impact on performance. Compared
to `enable_sequential_cpu_offload`, this method moves one whole model at a time to the GPU when its `forward`
method is called, and the model remains in GPU until the next model runs. Memory savings are lower than with
`enable_sequential_cpu_offload`, but performance is much better due to the iterative execution of the `unet`.
"""
if is_accelerate_available() and is_accelerate_version(">=", "0.17.0.dev0"):
from accelerate import cpu_offload_with_hook
else:
raise ImportError("`enable_model_cpu_offload` requires `accelerate v0.17.0` or higher.")
device = torch.device(f"cuda:{gpu_id}")
if self.device.type != "cpu":
self.to("cpu", silence_dtype_warnings=True)
torch.cuda.empty_cache() # otherwise we don't see the memory savings (but they probably exist)
model_sequence = [
self.text_encoder.text_model,
self.text_encoder.text_projection,
self.text_encoder_2,
self.projection_model,
self.language_model,
self.unet,
self.vae,
self.vocoder,
self.text_encoder,
]
hook = None
for cpu_offloaded_model in model_sequence:
_, hook = cpu_offload_with_hook(cpu_offloaded_model, device, prev_module_hook=hook)
# We'll offload the last model manually.
self.final_offload_hook = hook
def generate_language_model(
self,
inputs_embeds: torch.Tensor = None,
max_new_tokens: int = 8,
**model_kwargs,
):
"""
Generates a sequence of hidden-states from the language model, conditioned on the embedding inputs.
Parameters:
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
The sequence used as a prompt for the generation.
max_new_tokens (`int`):
Number of new tokens to generate.
model_kwargs (`Dict[str, Any]`, *optional*):
Ad hoc parametrization of additional model-specific kwargs that will be forwarded to the `forward`
function of the model.
Return:
`inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
The sequence of generated hidden-states.
"""
max_new_tokens = max_new_tokens if max_new_tokens is not None else self.language_model.config.max_new_tokens
for _ in range(max_new_tokens):
# prepare model inputs
model_inputs = prepare_inputs_for_generation(inputs_embeds, **model_kwargs)
# forward pass to get next hidden states
output = self.language_model(**model_inputs, return_dict=True)
next_hidden_states = output.last_hidden_state
# Update the model input
inputs_embeds = torch.cat([inputs_embeds, next_hidden_states[:, -1:, :]], dim=1)
# Update generated hidden states, model inputs, and length for next step
model_kwargs = self.language_model._update_model_kwargs_for_generation(output, model_kwargs)
return inputs_embeds[:, -max_new_tokens:, :]
def encode_prompt(
self,
prompt,
device,
num_waveforms_per_prompt,
do_classifier_free_guidance,
negative_prompt=None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
generated_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_generated_prompt_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
negative_attention_mask: Optional[torch.LongTensor] = None,
max_new_tokens: Optional[int] = None,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
device (`torch.device`):
torch device
num_waveforms_per_prompt (`int`):
number of waveforms that should be generated per prompt
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the audio generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-computed text embeddings from the Flan T5 model. Can be used to easily tweak text inputs, *e.g.*
prompt weighting. If not provided, text embeddings will be computed from `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-computed negative text embeddings from the Flan T5 model. Can be used to easily tweak text inputs,
*e.g.* prompt weighting. If not provided, negative_prompt_embeds will be computed from
`negative_prompt` input argument.
generated_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings from the GPT2 langauge model. Can be used to easily tweak text inputs,
*e.g.* prompt weighting. If not provided, text embeddings will be generated from `prompt` input
argument.
negative_generated_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings from the GPT2 language model. Can be used to easily tweak text
inputs, *e.g.* prompt weighting. If not provided, negative_prompt_embeds will be computed from
`negative_prompt` input argument.
attention_mask (`torch.LongTensor`, *optional*):
Pre-computed attention mask to be applied to the `prompt_embeds`. If not provided, attention mask will
be computed from `prompt` input argument.
negative_attention_mask (`torch.LongTensor`, *optional*):
Pre-computed attention mask to be applied to the `negative_prompt_embeds`. If not provided, attention
mask will be computed from `negative_prompt` input argument.
max_new_tokens (`int`, *optional*, defaults to None):
The number of new tokens to generate with the GPT2 language model.
Returns:
prompt_embeds (`torch.FloatTensor`):
Text embeddings from the Flan T5 model.
attention_mask (`torch.LongTensor`):
Attention mask to be applied to the `prompt_embeds`.
generated_prompt_embeds (`torch.FloatTensor`):
Text embeddings generated from the GPT2 langauge model.
Example:
```python
>>> import scipy
>>> import torch
>>> from diffusers import AudioLDM2Pipeline
>>> repo_id = "cvssp/audioldm2"
>>> pipe = AudioLDM2Pipeline.from_pretrained(repo_id, torch_dtype=torch.float16)
>>> pipe = pipe.to("cuda")
>>> # Get text embedding vectors
>>> prompt_embeds, attention_mask, generated_prompt_embeds = pipe.encode_prompt(
... prompt="Techno music with a strong, upbeat tempo and high melodic riffs",
... device="cuda",
... do_classifier_free_guidance=True,
... )
>>> # Pass text embeddings to pipeline for text-conditional audio generation
>>> audio = pipe(
... prompt_embeds=prompt_embeds,
... attention_mask=attention_mask,
... generated_prompt_embeds=generated_prompt_embeds,
... num_inference_steps=200,
... audio_length_in_s=10.0,
... ).audios[0]
>>> # save generated audio sample
>>> scipy.io.wavfile.write("techno.wav", rate=16000, data=audio)
```"""
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
# Define tokenizers and text encoders
tokenizers = [self.tokenizer, self.tokenizer_2]
text_encoders = [self.text_encoder, self.text_encoder_2]
if prompt_embeds is None:
prompt_embeds_list = []
attention_mask_list = []
for tokenizer, text_encoder in zip(tokenizers, text_encoders):
text_inputs = tokenizer(
prompt,
padding="max_length" if isinstance(tokenizer, (RobertaTokenizer, RobertaTokenizerFast)) else True,
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
attention_mask = text_inputs.attention_mask
untruncated_ids = tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = tokenizer.batch_decode(untruncated_ids[:, tokenizer.model_max_length - 1 : -1])
logger.warning(
f"The following part of your input was truncated because {text_encoder.config.model_type} can "
f"only handle sequences up to {tokenizer.model_max_length} tokens: {removed_text}"
)
text_input_ids = text_input_ids.to(device)
attention_mask = attention_mask.to(device)
if text_encoder.config.model_type == "clap":
prompt_embeds = text_encoder.get_text_features(
text_input_ids,
attention_mask=attention_mask,
)
# append the seq-len dim: (bs, hidden_size) -> (bs, seq_len, hidden_size)
prompt_embeds = prompt_embeds[:, None, :]
# make sure that we attend to this single hidden-state
attention_mask = attention_mask.new_ones((batch_size, 1))
else:
prompt_embeds = text_encoder(
text_input_ids,
attention_mask=attention_mask,
)
prompt_embeds = prompt_embeds[0]
prompt_embeds_list.append(prompt_embeds)
attention_mask_list.append(attention_mask)
projection_output = self.projection_model(
hidden_states=prompt_embeds_list[0],
hidden_states_1=prompt_embeds_list[1],
attention_mask=attention_mask_list[0],
attention_mask_1=attention_mask_list[1],
)
projected_prompt_embeds = projection_output.hidden_states
projected_attention_mask = projection_output.attention_mask
generated_prompt_embeds = self.generate_language_model(
projected_prompt_embeds,
attention_mask=projected_attention_mask,
max_new_tokens=max_new_tokens,
)
prompt_embeds = prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
attention_mask = (
attention_mask.to(device=device)
if attention_mask is not None
else torch.ones(prompt_embeds.shape[:2], dtype=torch.long, device=device)
)
generated_prompt_embeds = generated_prompt_embeds.to(dtype=self.language_model.dtype, device=device)
bs_embed, seq_len, hidden_size = prompt_embeds.shape
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_waveforms_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_waveforms_per_prompt, seq_len, hidden_size)
# duplicate attention mask for each generation per prompt
attention_mask = attention_mask.repeat(1, num_waveforms_per_prompt)
attention_mask = attention_mask.view(bs_embed * num_waveforms_per_prompt, seq_len)
bs_embed, seq_len, hidden_size = generated_prompt_embeds.shape
# duplicate generated embeddings for each generation per prompt, using mps friendly method
generated_prompt_embeds = generated_prompt_embeds.repeat(1, num_waveforms_per_prompt, 1)
generated_prompt_embeds = generated_prompt_embeds.view(
bs_embed * num_waveforms_per_prompt, seq_len, hidden_size
)
# get unconditional embeddings for classifier free guidance
if do_classifier_free_guidance and negative_prompt_embeds is None:
uncond_tokens: List[str]
if negative_prompt is None:
uncond_tokens = [""] * batch_size
elif type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif isinstance(negative_prompt, str):
uncond_tokens = [negative_prompt]
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = negative_prompt
negative_prompt_embeds_list = []
negative_attention_mask_list = []
max_length = prompt_embeds.shape[1]
for tokenizer, text_encoder in zip(tokenizers, text_encoders):
uncond_input = tokenizer(
uncond_tokens,
padding="max_length",
max_length=tokenizer.model_max_length
if isinstance(tokenizer, (RobertaTokenizer, RobertaTokenizerFast))
else max_length,
truncation=True,
return_tensors="pt",
)
uncond_input_ids = uncond_input.input_ids.to(device)
negative_attention_mask = uncond_input.attention_mask.to(device)
if text_encoder.config.model_type == "clap":
negative_prompt_embeds = text_encoder.get_text_features(
uncond_input_ids,
attention_mask=negative_attention_mask,
)
# append the seq-len dim: (bs, hidden_size) -> (bs, seq_len, hidden_size)
negative_prompt_embeds = negative_prompt_embeds[:, None, :]
# make sure that we attend to this single hidden-state
negative_attention_mask = negative_attention_mask.new_ones((batch_size, 1))
else:
negative_prompt_embeds = text_encoder(
uncond_input_ids,
attention_mask=negative_attention_mask,
)
negative_prompt_embeds = negative_prompt_embeds[0]
negative_prompt_embeds_list.append(negative_prompt_embeds)
negative_attention_mask_list.append(negative_attention_mask)
projection_output = self.projection_model(
hidden_states=negative_prompt_embeds_list[0],
hidden_states_1=negative_prompt_embeds_list[1],
attention_mask=negative_attention_mask_list[0],
attention_mask_1=negative_attention_mask_list[1],
)
negative_projected_prompt_embeds = projection_output.hidden_states
negative_projected_attention_mask = projection_output.attention_mask
negative_generated_prompt_embeds = self.generate_language_model(
negative_projected_prompt_embeds,
attention_mask=negative_projected_attention_mask,
max_new_tokens=max_new_tokens,
)
if do_classifier_free_guidance:
seq_len = negative_prompt_embeds.shape[1]
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
negative_attention_mask = (
negative_attention_mask.to(device=device)
if negative_attention_mask is not None
else torch.ones(negative_prompt_embeds.shape[:2], dtype=torch.long, device=device)
)
negative_generated_prompt_embeds = negative_generated_prompt_embeds.to(
dtype=self.language_model.dtype, device=device
)
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_waveforms_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_waveforms_per_prompt, seq_len, -1)
# duplicate unconditional attention mask for each generation per prompt
negative_attention_mask = negative_attention_mask.repeat(1, num_waveforms_per_prompt)
negative_attention_mask = negative_attention_mask.view(batch_size * num_waveforms_per_prompt, seq_len)
# duplicate unconditional generated embeddings for each generation per prompt
seq_len = negative_generated_prompt_embeds.shape[1]
negative_generated_prompt_embeds = negative_generated_prompt_embeds.repeat(1, num_waveforms_per_prompt, 1)
negative_generated_prompt_embeds = negative_generated_prompt_embeds.view(
batch_size * num_waveforms_per_prompt, seq_len, -1
)
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds])
attention_mask = torch.cat([negative_attention_mask, attention_mask])
generated_prompt_embeds = torch.cat([negative_generated_prompt_embeds, generated_prompt_embeds])
return prompt_embeds, attention_mask, generated_prompt_embeds
# Copied from diffusers.pipelines.audioldm.pipeline_audioldm.AudioLDMPipeline.mel_spectrogram_to_waveform
def mel_spectrogram_to_waveform(self, mel_spectrogram):
if mel_spectrogram.dim() == 4:
mel_spectrogram = mel_spectrogram.squeeze(1)
waveform = self.vocoder(mel_spectrogram)
# we always cast to float32 as this does not cause significant overhead and is compatible with bfloat16
waveform = waveform.cpu().float()
return waveform
def score_waveforms(self, text, audio, num_waveforms_per_prompt, device, dtype):
if not is_librosa_available():
logger.info(
"Automatic scoring of the generated audio waveforms against the input prompt text requires the "
"`librosa` package to resample the generated waveforms. Returning the audios in the order they were "
"generated. To enable automatic scoring, install `librosa` with: `pip install librosa`."
)
return audio
inputs = self.tokenizer(text, return_tensors="pt", padding=True)
resampled_audio = librosa.resample(
audio.numpy(), orig_sr=self.vocoder.config.sampling_rate, target_sr=self.feature_extractor.sampling_rate
)
inputs["input_features"] = self.feature_extractor(
list(resampled_audio), return_tensors="pt", sampling_rate=self.feature_extractor.sampling_rate
).input_features.type(dtype)
inputs = inputs.to(device)
# compute the audio-text similarity score using the CLAP model
logits_per_text = self.text_encoder(**inputs).logits_per_text
# sort by the highest matching generations per prompt
indices = torch.argsort(logits_per_text, dim=1, descending=True)[:, :num_waveforms_per_prompt]
audio = torch.index_select(audio, 0, indices.reshape(-1).cpu())
return audio
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_extra_step_kwargs
def prepare_extra_step_kwargs(self, generator, eta):
# prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
# eta (η) is only used with the DDIMScheduler, it will be ignored for other schedulers.
# eta corresponds to η in DDIM paper: https://arxiv.org/abs/2010.02502
# and should be between [0, 1]
accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys())
extra_step_kwargs = {}
if accepts_eta:
extra_step_kwargs["eta"] = eta
# check if the scheduler accepts generator
accepts_generator = "generator" in set(inspect.signature(self.scheduler.step).parameters.keys())
if accepts_generator:
extra_step_kwargs["generator"] = generator
return extra_step_kwargs
def check_inputs(
self,
prompt,
audio_length_in_s,
vocoder_upsample_factor,
callback_steps,
negative_prompt=None,
prompt_embeds=None,
negative_prompt_embeds=None,
generated_prompt_embeds=None,
negative_generated_prompt_embeds=None,
attention_mask=None,
negative_attention_mask=None,
):
min_audio_length_in_s = vocoder_upsample_factor * self.vae_scale_factor
if audio_length_in_s < min_audio_length_in_s:
raise ValueError(
f"`audio_length_in_s` has to be a positive value greater than or equal to {min_audio_length_in_s}, but "
f"is {audio_length_in_s}."
)
if self.vocoder.config.model_in_dim % self.vae_scale_factor != 0:
raise ValueError(
f"The number of frequency bins in the vocoder's log-mel spectrogram has to be divisible by the "
f"VAE scale factor, but got {self.vocoder.config.model_in_dim} bins and a scale factor of "
f"{self.vae_scale_factor}."
)
if (callback_steps is None) or (
callback_steps is not None and (not isinstance(callback_steps, int) or callback_steps <= 0)
):
raise ValueError(
f"`callback_steps` has to be a positive integer but is {callback_steps} of type"
f" {type(callback_steps)}."
)
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and (prompt_embeds is None or generated_prompt_embeds is None):
raise ValueError(
"Provide either `prompt`, or `prompt_embeds` and `generated_prompt_embeds`. Cannot leave "
"`prompt` undefined without specifying both `prompt_embeds` and `generated_prompt_embeds`."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
elif negative_prompt_embeds is not None and negative_generated_prompt_embeds is None:
raise ValueError(
"Cannot forward `negative_prompt_embeds` without `negative_generated_prompt_embeds`. Ensure that"
"both arguments are specified"
)
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if attention_mask is not None and attention_mask.shape != prompt_embeds.shape[:2]:
raise ValueError(
"`attention_mask should have the same batch size and sequence length as `prompt_embeds`, but got:"
f"`attention_mask: {attention_mask.shape} != `prompt_embeds` {prompt_embeds.shape}"
)
if generated_prompt_embeds is not None and negative_generated_prompt_embeds is not None:
if generated_prompt_embeds.shape != negative_generated_prompt_embeds.shape:
raise ValueError(
"`generated_prompt_embeds` and `negative_generated_prompt_embeds` must have the same shape when "
f"passed directly, but got: `generated_prompt_embeds` {generated_prompt_embeds.shape} != "
f"`negative_generated_prompt_embeds` {negative_generated_prompt_embeds.shape}."
)
if (
negative_attention_mask is not None
and negative_attention_mask.shape != negative_prompt_embeds.shape[:2]
):
raise ValueError(
"`attention_mask should have the same batch size and sequence length as `prompt_embeds`, but got:"
f"`attention_mask: {negative_attention_mask.shape} != `prompt_embeds` {negative_prompt_embeds.shape}"
)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_latents with width->self.vocoder.config.model_in_dim
def prepare_latents(self, batch_size, num_channels_latents, height, dtype, device, generator, latents=None):
shape = (
batch_size,
num_channels_latents,
height // self.vae_scale_factor,
self.vocoder.config.model_in_dim // self.vae_scale_factor,
)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
latents = latents.to(device)
# scale the initial noise by the standard deviation required by the scheduler
latents = latents * self.scheduler.init_noise_sigma
return latents
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
prompt: Union[str, List[str]] = None,
audio_length_in_s: Optional[float] = None,
num_inference_steps: int = 200,
guidance_scale: float = 3.5,
negative_prompt: Optional[Union[str, List[str]]] = None,
num_waveforms_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.FloatTensor] = None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
generated_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_generated_prompt_embeds: Optional[torch.FloatTensor] = None,
attention_mask: Optional[torch.LongTensor] = None,
negative_attention_mask: Optional[torch.LongTensor] = None,
max_new_tokens: Optional[int] = None,
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None,
callback_steps: Optional[int] = 1,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
output_type: Optional[str] = "np",
):
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide audio generation. If not defined, you need to pass `prompt_embeds`.
audio_length_in_s (`int`, *optional*, defaults to 10.24):
The length of the generated audio sample in seconds.
num_inference_steps (`int`, *optional*, defaults to 200):
The number of denoising steps. More denoising steps usually lead to a higher quality audio at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 3.5):
A higher guidance scale value encourages the model to generate audio that is closely linked to the text
`prompt` at the expense of lower sound quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in audio generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
num_waveforms_per_prompt (`int`, *optional*, defaults to 1):
The number of waveforms to generate per prompt. If `num_waveforms_per_prompt > 1`, then automatic
scoring is performed between the generated outputs and the text prompt. This scoring ranks the
generated waveforms based on their cosine similarity with the text input in the joint text-audio
embedding space.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.FloatTensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for spectrogram
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
provided, text embeddings are generated from the `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
generated_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings from the GPT2 langauge model. Can be used to easily tweak text inputs,
*e.g.* prompt weighting. If not provided, text embeddings will be generated from `prompt` input
argument.
negative_generated_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings from the GPT2 language model. Can be used to easily tweak text
inputs, *e.g.* prompt weighting. If not provided, negative_prompt_embeds will be computed from
`negative_prompt` input argument.
attention_mask (`torch.LongTensor`, *optional*):
Pre-computed attention mask to be applied to the `prompt_embeds`. If not provided, attention mask will
be computed from `prompt` input argument.
negative_attention_mask (`torch.LongTensor`, *optional*):
Pre-computed attention mask to be applied to the `negative_prompt_embeds`. If not provided, attention
mask will be computed from `negative_prompt` input argument.
max_new_tokens (`int`, *optional*, defaults to None):
Number of new tokens to generate with the GPT2 language model. If not provided, number of tokens will
be taken from the config of the model.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
cross_attention_kwargs (`dict`, *optional*):
A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
[`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
output_type (`str`, *optional*, defaults to `"np"`):
The output format of the generated audio. Choose between `"np"` to return a NumPy `np.ndarray` or
`"pt"` to return a PyTorch `torch.Tensor` object. Set to `"latent"` to return the latent diffusion
model (LDM) output.
Examples:
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] is returned,
otherwise a `tuple` is returned where the first element is a list with the generated audio.
"""
# 0. Convert audio input length from seconds to spectrogram height
vocoder_upsample_factor = np.prod(self.vocoder.config.upsample_rates) / self.vocoder.config.sampling_rate
if audio_length_in_s is None:
audio_length_in_s = self.unet.config.sample_size * self.vae_scale_factor * vocoder_upsample_factor
height = int(audio_length_in_s / vocoder_upsample_factor)
original_waveform_length = int(audio_length_in_s * self.vocoder.config.sampling_rate)
if height % self.vae_scale_factor != 0:
height = int(np.ceil(height / self.vae_scale_factor)) * self.vae_scale_factor
logger.info(
f"Audio length in seconds {audio_length_in_s} is increased to {height * vocoder_upsample_factor} "
f"so that it can be handled by the model. It will be cut to {audio_length_in_s} after the "
f"denoising process."
)
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt,
audio_length_in_s,
vocoder_upsample_factor,
callback_steps,
negative_prompt,
prompt_embeds,
negative_prompt_embeds,
generated_prompt_embeds,
negative_generated_prompt_embeds,
attention_mask,
negative_attention_mask,
)
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
# 3. Encode input prompt
prompt_embeds, attention_mask, generated_prompt_embeds = self.encode_prompt(
prompt,
device,
num_waveforms_per_prompt,
do_classifier_free_guidance,
negative_prompt,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
generated_prompt_embeds=generated_prompt_embeds,
negative_generated_prompt_embeds=negative_generated_prompt_embeds,
attention_mask=attention_mask,
negative_attention_mask=negative_attention_mask,
max_new_tokens=max_new_tokens,
)
# 4. Prepare timesteps
self.scheduler.set_timesteps(num_inference_steps, device=device)
timesteps = self.scheduler.timesteps
# 5. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
batch_size * num_waveforms_per_prompt,
num_channels_latents,
height,
prompt_embeds.dtype,
device,
generator,
latents,
)
# 6. Prepare extra step kwargs
extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta)
# 7. Denoising loop
num_warmup_steps = len(timesteps) - num_inference_steps * self.scheduler.order
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
# predict the noise residual
noise_pred = self.unet(
latent_model_input,
t,
encoder_hidden_states=generated_prompt_embeds,
encoder_hidden_states_1=prompt_embeds,
encoder_attention_mask_1=attention_mask,
return_dict=False,
)[0]
# perform guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs).prev_sample
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if callback is not None and i % callback_steps == 0:
step_idx = i // getattr(self.scheduler, "order", 1)
callback(step_idx, t, latents)
self.maybe_free_model_hooks()
# 8. Post-processing
if not output_type == "latent":
latents = 1 / self.vae.config.scaling_factor * latents
mel_spectrogram = self.vae.decode(latents).sample
else:
return AudioPipelineOutput(audios=latents)
audio = self.mel_spectrogram_to_waveform(mel_spectrogram)
audio = audio[:, :original_waveform_length]
# 9. Automatic scoring
if num_waveforms_per_prompt > 1 and prompt is not None:
audio = self.score_waveforms(
text=prompt,
audio=audio,
num_waveforms_per_prompt=num_waveforms_per_prompt,
device=device,
dtype=prompt_embeds.dtype,
)
if output_type == "np":
audio = audio.numpy()
if not return_dict:
return (audio,)
return AudioPipelineOutput(audios=audio)
| diffusers/src/diffusers/pipelines/audioldm2/pipeline_audioldm2.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/audioldm2/pipeline_audioldm2.py",
"repo_id": "diffusers",
"token_count": 21703
} | 127 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
from typing import Any, Callable, Dict, List, Optional, Tuple, Union
import numpy as np
import PIL.Image
import torch
import torch.nn.functional as F
from transformers import (
CLIPImageProcessor,
CLIPTextModel,
CLIPTextModelWithProjection,
CLIPTokenizer,
CLIPVisionModelWithProjection,
)
from diffusers.utils.import_utils import is_invisible_watermark_available
from ...image_processor import PipelineImageInput, VaeImageProcessor
from ...loaders import (
FromSingleFileMixin,
IPAdapterMixin,
StableDiffusionXLLoraLoaderMixin,
TextualInversionLoaderMixin,
)
from ...models import AutoencoderKL, ControlNetModel, ImageProjection, UNet2DConditionModel
from ...models.attention_processor import (
AttnProcessor2_0,
LoRAAttnProcessor2_0,
LoRAXFormersAttnProcessor,
XFormersAttnProcessor,
)
from ...models.lora import adjust_lora_scale_text_encoder
from ...schedulers import KarrasDiffusionSchedulers
from ...utils import (
USE_PEFT_BACKEND,
deprecate,
logging,
replace_example_docstring,
scale_lora_layers,
unscale_lora_layers,
)
from ...utils.torch_utils import is_compiled_module, is_torch_version, randn_tensor
from ..pipeline_utils import DiffusionPipeline
from ..stable_diffusion_xl.pipeline_output import StableDiffusionXLPipelineOutput
if is_invisible_watermark_available():
from ..stable_diffusion_xl.watermark import StableDiffusionXLWatermarker
from .multicontrolnet import MultiControlNetModel
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> # !pip install opencv-python transformers accelerate
>>> from diffusers import StableDiffusionXLControlNetPipeline, ControlNetModel, AutoencoderKL
>>> from diffusers.utils import load_image
>>> import numpy as np
>>> import torch
>>> import cv2
>>> from PIL import Image
>>> prompt = "aerial view, a futuristic research complex in a bright foggy jungle, hard lighting"
>>> negative_prompt = "low quality, bad quality, sketches"
>>> # download an image
>>> image = load_image(
... "https://hf.co/datasets/hf-internal-testing/diffusers-images/resolve/main/sd_controlnet/hf-logo.png"
... )
>>> # initialize the models and pipeline
>>> controlnet_conditioning_scale = 0.5 # recommended for good generalization
>>> controlnet = ControlNetModel.from_pretrained(
... "diffusers/controlnet-canny-sdxl-1.0", torch_dtype=torch.float16
... )
>>> vae = AutoencoderKL.from_pretrained("madebyollin/sdxl-vae-fp16-fix", torch_dtype=torch.float16)
>>> pipe = StableDiffusionXLControlNetPipeline.from_pretrained(
... "stabilityai/stable-diffusion-xl-base-1.0", controlnet=controlnet, vae=vae, torch_dtype=torch.float16
... )
>>> pipe.enable_model_cpu_offload()
>>> # get canny image
>>> image = np.array(image)
>>> image = cv2.Canny(image, 100, 200)
>>> image = image[:, :, None]
>>> image = np.concatenate([image, image, image], axis=2)
>>> canny_image = Image.fromarray(image)
>>> # generate image
>>> image = pipe(
... prompt, controlnet_conditioning_scale=controlnet_conditioning_scale, image=canny_image
... ).images[0]
```
"""
class StableDiffusionXLControlNetPipeline(
DiffusionPipeline,
TextualInversionLoaderMixin,
StableDiffusionXLLoraLoaderMixin,
IPAdapterMixin,
FromSingleFileMixin,
):
r"""
Pipeline for text-to-image generation using Stable Diffusion XL with ControlNet guidance.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
The pipeline also inherits the following loading methods:
- [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
- [`~loaders.StableDiffusionXLLoraLoaderMixin.load_lora_weights`] for loading LoRA weights
- [`~loaders.StableDiffusionXLLoraLoaderMixin.save_lora_weights`] for saving LoRA weights
- [`~loaders.FromSingleFileMixin.from_single_file`] for loading `.ckpt` files
- [`~loaders.IPAdapterMixin.load_ip_adapter`] for loading IP Adapters
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
text_encoder ([`~transformers.CLIPTextModel`]):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
text_encoder_2 ([`~transformers.CLIPTextModelWithProjection`]):
Second frozen text-encoder
([laion/CLIP-ViT-bigG-14-laion2B-39B-b160k](https://huggingface.co/laion/CLIP-ViT-bigG-14-laion2B-39B-b160k)).
tokenizer ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
tokenizer_2 ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded image latents.
controlnet ([`ControlNetModel`] or `List[ControlNetModel]`):
Provides additional conditioning to the `unet` during the denoising process. If you set multiple
ControlNets as a list, the outputs from each ControlNet are added together to create one combined
additional conditioning.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
force_zeros_for_empty_prompt (`bool`, *optional*, defaults to `"True"`):
Whether the negative prompt embeddings should always be set to 0. Also see the config of
`stabilityai/stable-diffusion-xl-base-1-0`.
add_watermarker (`bool`, *optional*):
Whether to use the [invisible_watermark](https://github.com/ShieldMnt/invisible-watermark/) library to
watermark output images. If not defined, it defaults to `True` if the package is installed; otherwise no
watermarker is used.
"""
# leave controlnet out on purpose because it iterates with unet
model_cpu_offload_seq = "text_encoder->text_encoder_2->image_encoder->unet->vae"
_optional_components = [
"tokenizer",
"tokenizer_2",
"text_encoder",
"text_encoder_2",
"feature_extractor",
"image_encoder",
]
_callback_tensor_inputs = ["latents", "prompt_embeds", "negative_prompt_embeds"]
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
text_encoder_2: CLIPTextModelWithProjection,
tokenizer: CLIPTokenizer,
tokenizer_2: CLIPTokenizer,
unet: UNet2DConditionModel,
controlnet: Union[ControlNetModel, List[ControlNetModel], Tuple[ControlNetModel], MultiControlNetModel],
scheduler: KarrasDiffusionSchedulers,
force_zeros_for_empty_prompt: bool = True,
add_watermarker: Optional[bool] = None,
feature_extractor: CLIPImageProcessor = None,
image_encoder: CLIPVisionModelWithProjection = None,
):
super().__init__()
if isinstance(controlnet, (list, tuple)):
controlnet = MultiControlNetModel(controlnet)
self.register_modules(
vae=vae,
text_encoder=text_encoder,
text_encoder_2=text_encoder_2,
tokenizer=tokenizer,
tokenizer_2=tokenizer_2,
unet=unet,
controlnet=controlnet,
scheduler=scheduler,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor, do_convert_rgb=True)
self.control_image_processor = VaeImageProcessor(
vae_scale_factor=self.vae_scale_factor, do_convert_rgb=True, do_normalize=False
)
add_watermarker = add_watermarker if add_watermarker is not None else is_invisible_watermark_available()
if add_watermarker:
self.watermark = StableDiffusionXLWatermarker()
else:
self.watermark = None
self.register_to_config(force_zeros_for_empty_prompt=force_zeros_for_empty_prompt)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_slicing
def enable_vae_slicing(self):
r"""
Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to
compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.
"""
self.vae.enable_slicing()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_slicing
def disable_vae_slicing(self):
r"""
Disable sliced VAE decoding. If `enable_vae_slicing` was previously enabled, this method will go back to
computing decoding in one step.
"""
self.vae.disable_slicing()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_tiling
def enable_vae_tiling(self):
r"""
Enable tiled VAE decoding. When this option is enabled, the VAE will split the input tensor into tiles to
compute decoding and encoding in several steps. This is useful for saving a large amount of memory and to allow
processing larger images.
"""
self.vae.enable_tiling()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_tiling
def disable_vae_tiling(self):
r"""
Disable tiled VAE decoding. If `enable_vae_tiling` was previously enabled, this method will go back to
computing decoding in one step.
"""
self.vae.disable_tiling()
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.encode_prompt
def encode_prompt(
self,
prompt: str,
prompt_2: Optional[str] = None,
device: Optional[torch.device] = None,
num_images_per_prompt: int = 1,
do_classifier_free_guidance: bool = True,
negative_prompt: Optional[str] = None,
negative_prompt_2: Optional[str] = None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
lora_scale: Optional[float] = None,
clip_skip: Optional[int] = None,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders
device: (`torch.device`):
torch device
num_images_per_prompt (`int`):
number of images that should be generated per prompt
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and
`text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting.
If not provided, pooled text embeddings will be generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt`
input argument.
lora_scale (`float`, *optional*):
A lora scale that will be applied to all LoRA layers of the text encoder if LoRA layers are loaded.
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
"""
device = device or self._execution_device
# set lora scale so that monkey patched LoRA
# function of text encoder can correctly access it
if lora_scale is not None and isinstance(self, StableDiffusionXLLoraLoaderMixin):
self._lora_scale = lora_scale
# dynamically adjust the LoRA scale
if self.text_encoder is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder, lora_scale)
else:
scale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder_2, lora_scale)
else:
scale_lora_layers(self.text_encoder_2, lora_scale)
prompt = [prompt] if isinstance(prompt, str) else prompt
if prompt is not None:
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
# Define tokenizers and text encoders
tokenizers = [self.tokenizer, self.tokenizer_2] if self.tokenizer is not None else [self.tokenizer_2]
text_encoders = (
[self.text_encoder, self.text_encoder_2] if self.text_encoder is not None else [self.text_encoder_2]
)
if prompt_embeds is None:
prompt_2 = prompt_2 or prompt
prompt_2 = [prompt_2] if isinstance(prompt_2, str) else prompt_2
# textual inversion: procecss multi-vector tokens if necessary
prompt_embeds_list = []
prompts = [prompt, prompt_2]
for prompt, tokenizer, text_encoder in zip(prompts, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
prompt = self.maybe_convert_prompt(prompt, tokenizer)
text_inputs = tokenizer(
prompt,
padding="max_length",
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = tokenizer.batch_decode(untruncated_ids[:, tokenizer.model_max_length - 1 : -1])
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {tokenizer.model_max_length} tokens: {removed_text}"
)
prompt_embeds = text_encoder(text_input_ids.to(device), output_hidden_states=True)
# We are only ALWAYS interested in the pooled output of the final text encoder
pooled_prompt_embeds = prompt_embeds[0]
if clip_skip is None:
prompt_embeds = prompt_embeds.hidden_states[-2]
else:
# "2" because SDXL always indexes from the penultimate layer.
prompt_embeds = prompt_embeds.hidden_states[-(clip_skip + 2)]
prompt_embeds_list.append(prompt_embeds)
prompt_embeds = torch.concat(prompt_embeds_list, dim=-1)
# get unconditional embeddings for classifier free guidance
zero_out_negative_prompt = negative_prompt is None and self.config.force_zeros_for_empty_prompt
if do_classifier_free_guidance and negative_prompt_embeds is None and zero_out_negative_prompt:
negative_prompt_embeds = torch.zeros_like(prompt_embeds)
negative_pooled_prompt_embeds = torch.zeros_like(pooled_prompt_embeds)
elif do_classifier_free_guidance and negative_prompt_embeds is None:
negative_prompt = negative_prompt or ""
negative_prompt_2 = negative_prompt_2 or negative_prompt
# normalize str to list
negative_prompt = batch_size * [negative_prompt] if isinstance(negative_prompt, str) else negative_prompt
negative_prompt_2 = (
batch_size * [negative_prompt_2] if isinstance(negative_prompt_2, str) else negative_prompt_2
)
uncond_tokens: List[str]
if prompt is not None and type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = [negative_prompt, negative_prompt_2]
negative_prompt_embeds_list = []
for negative_prompt, tokenizer, text_encoder in zip(uncond_tokens, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
negative_prompt = self.maybe_convert_prompt(negative_prompt, tokenizer)
max_length = prompt_embeds.shape[1]
uncond_input = tokenizer(
negative_prompt,
padding="max_length",
max_length=max_length,
truncation=True,
return_tensors="pt",
)
negative_prompt_embeds = text_encoder(
uncond_input.input_ids.to(device),
output_hidden_states=True,
)
# We are only ALWAYS interested in the pooled output of the final text encoder
negative_pooled_prompt_embeds = negative_prompt_embeds[0]
negative_prompt_embeds = negative_prompt_embeds.hidden_states[-2]
negative_prompt_embeds_list.append(negative_prompt_embeds)
negative_prompt_embeds = torch.concat(negative_prompt_embeds_list, dim=-1)
if self.text_encoder_2 is not None:
prompt_embeds = prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
prompt_embeds = prompt_embeds.to(dtype=self.unet.dtype, device=device)
bs_embed, seq_len, _ = prompt_embeds.shape
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1)
if do_classifier_free_guidance:
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
if self.text_encoder_2 is not None:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.unet.dtype, device=device)
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1)
pooled_prompt_embeds = pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if do_classifier_free_guidance:
negative_pooled_prompt_embeds = negative_pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if self.text_encoder is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder_2, lora_scale)
return prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.encode_image
def encode_image(self, image, device, num_images_per_prompt, output_hidden_states=None):
dtype = next(self.image_encoder.parameters()).dtype
if not isinstance(image, torch.Tensor):
image = self.feature_extractor(image, return_tensors="pt").pixel_values
image = image.to(device=device, dtype=dtype)
if output_hidden_states:
image_enc_hidden_states = self.image_encoder(image, output_hidden_states=True).hidden_states[-2]
image_enc_hidden_states = image_enc_hidden_states.repeat_interleave(num_images_per_prompt, dim=0)
uncond_image_enc_hidden_states = self.image_encoder(
torch.zeros_like(image), output_hidden_states=True
).hidden_states[-2]
uncond_image_enc_hidden_states = uncond_image_enc_hidden_states.repeat_interleave(
num_images_per_prompt, dim=0
)
return image_enc_hidden_states, uncond_image_enc_hidden_states
else:
image_embeds = self.image_encoder(image).image_embeds
image_embeds = image_embeds.repeat_interleave(num_images_per_prompt, dim=0)
uncond_image_embeds = torch.zeros_like(image_embeds)
return image_embeds, uncond_image_embeds
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_ip_adapter_image_embeds
def prepare_ip_adapter_image_embeds(self, ip_adapter_image, device, num_images_per_prompt):
if not isinstance(ip_adapter_image, list):
ip_adapter_image = [ip_adapter_image]
if len(ip_adapter_image) != len(self.unet.encoder_hid_proj.image_projection_layers):
raise ValueError(
f"`ip_adapter_image` must have same length as the number of IP Adapters. Got {len(ip_adapter_image)} images and {len(self.unet.encoder_hid_proj.image_projection_layers)} IP Adapters."
)
image_embeds = []
for single_ip_adapter_image, image_proj_layer in zip(
ip_adapter_image, self.unet.encoder_hid_proj.image_projection_layers
):
output_hidden_state = not isinstance(image_proj_layer, ImageProjection)
single_image_embeds, single_negative_image_embeds = self.encode_image(
single_ip_adapter_image, device, 1, output_hidden_state
)
single_image_embeds = torch.stack([single_image_embeds] * num_images_per_prompt, dim=0)
single_negative_image_embeds = torch.stack([single_negative_image_embeds] * num_images_per_prompt, dim=0)
if self.do_classifier_free_guidance:
single_image_embeds = torch.cat([single_negative_image_embeds, single_image_embeds])
single_image_embeds = single_image_embeds.to(device)
image_embeds.append(single_image_embeds)
return image_embeds
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_extra_step_kwargs
def prepare_extra_step_kwargs(self, generator, eta):
# prepare extra kwargs for the scheduler step, since not all schedulers have the same signature
# eta (η) is only used with the DDIMScheduler, it will be ignored for other schedulers.
# eta corresponds to η in DDIM paper: https://arxiv.org/abs/2010.02502
# and should be between [0, 1]
accepts_eta = "eta" in set(inspect.signature(self.scheduler.step).parameters.keys())
extra_step_kwargs = {}
if accepts_eta:
extra_step_kwargs["eta"] = eta
# check if the scheduler accepts generator
accepts_generator = "generator" in set(inspect.signature(self.scheduler.step).parameters.keys())
if accepts_generator:
extra_step_kwargs["generator"] = generator
return extra_step_kwargs
def check_inputs(
self,
prompt,
prompt_2,
image,
callback_steps,
negative_prompt=None,
negative_prompt_2=None,
prompt_embeds=None,
negative_prompt_embeds=None,
pooled_prompt_embeds=None,
negative_pooled_prompt_embeds=None,
controlnet_conditioning_scale=1.0,
control_guidance_start=0.0,
control_guidance_end=1.0,
callback_on_step_end_tensor_inputs=None,
):
if callback_steps is not None and (not isinstance(callback_steps, int) or callback_steps <= 0):
raise ValueError(
f"`callback_steps` has to be a positive integer but is {callback_steps} of type"
f" {type(callback_steps)}."
)
if callback_on_step_end_tensor_inputs is not None and not all(
k in self._callback_tensor_inputs for k in callback_on_step_end_tensor_inputs
):
raise ValueError(
f"`callback_on_step_end_tensor_inputs` has to be in {self._callback_tensor_inputs}, but found {[k for k in callback_on_step_end_tensor_inputs if k not in self._callback_tensor_inputs]}"
)
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt_2 is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt_2`: {prompt_2} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and prompt_embeds is None:
raise ValueError(
"Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
elif prompt_2 is not None and (not isinstance(prompt_2, str) and not isinstance(prompt_2, list)):
raise ValueError(f"`prompt_2` has to be of type `str` or `list` but is {type(prompt_2)}")
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
elif negative_prompt_2 is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt_2`: {negative_prompt_2} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if prompt_embeds is not None and pooled_prompt_embeds is None:
raise ValueError(
"If `prompt_embeds` are provided, `pooled_prompt_embeds` also have to be passed. Make sure to generate `pooled_prompt_embeds` from the same text encoder that was used to generate `prompt_embeds`."
)
if negative_prompt_embeds is not None and negative_pooled_prompt_embeds is None:
raise ValueError(
"If `negative_prompt_embeds` are provided, `negative_pooled_prompt_embeds` also have to be passed. Make sure to generate `negative_pooled_prompt_embeds` from the same text encoder that was used to generate `negative_prompt_embeds`."
)
# `prompt` needs more sophisticated handling when there are multiple
# conditionings.
if isinstance(self.controlnet, MultiControlNetModel):
if isinstance(prompt, list):
logger.warning(
f"You have {len(self.controlnet.nets)} ControlNets and you have passed {len(prompt)}"
" prompts. The conditionings will be fixed across the prompts."
)
# Check `image`
is_compiled = hasattr(F, "scaled_dot_product_attention") and isinstance(
self.controlnet, torch._dynamo.eval_frame.OptimizedModule
)
if (
isinstance(self.controlnet, ControlNetModel)
or is_compiled
and isinstance(self.controlnet._orig_mod, ControlNetModel)
):
self.check_image(image, prompt, prompt_embeds)
elif (
isinstance(self.controlnet, MultiControlNetModel)
or is_compiled
and isinstance(self.controlnet._orig_mod, MultiControlNetModel)
):
if not isinstance(image, list):
raise TypeError("For multiple controlnets: `image` must be type `list`")
# When `image` is a nested list:
# (e.g. [[canny_image_1, pose_image_1], [canny_image_2, pose_image_2]])
elif any(isinstance(i, list) for i in image):
raise ValueError("A single batch of multiple conditionings are supported at the moment.")
elif len(image) != len(self.controlnet.nets):
raise ValueError(
f"For multiple controlnets: `image` must have the same length as the number of controlnets, but got {len(image)} images and {len(self.controlnet.nets)} ControlNets."
)
for image_ in image:
self.check_image(image_, prompt, prompt_embeds)
else:
assert False
# Check `controlnet_conditioning_scale`
if (
isinstance(self.controlnet, ControlNetModel)
or is_compiled
and isinstance(self.controlnet._orig_mod, ControlNetModel)
):
if not isinstance(controlnet_conditioning_scale, float):
raise TypeError("For single controlnet: `controlnet_conditioning_scale` must be type `float`.")
elif (
isinstance(self.controlnet, MultiControlNetModel)
or is_compiled
and isinstance(self.controlnet._orig_mod, MultiControlNetModel)
):
if isinstance(controlnet_conditioning_scale, list):
if any(isinstance(i, list) for i in controlnet_conditioning_scale):
raise ValueError("A single batch of multiple conditionings are supported at the moment.")
elif isinstance(controlnet_conditioning_scale, list) and len(controlnet_conditioning_scale) != len(
self.controlnet.nets
):
raise ValueError(
"For multiple controlnets: When `controlnet_conditioning_scale` is specified as `list`, it must have"
" the same length as the number of controlnets"
)
else:
assert False
if not isinstance(control_guidance_start, (tuple, list)):
control_guidance_start = [control_guidance_start]
if not isinstance(control_guidance_end, (tuple, list)):
control_guidance_end = [control_guidance_end]
if len(control_guidance_start) != len(control_guidance_end):
raise ValueError(
f"`control_guidance_start` has {len(control_guidance_start)} elements, but `control_guidance_end` has {len(control_guidance_end)} elements. Make sure to provide the same number of elements to each list."
)
if isinstance(self.controlnet, MultiControlNetModel):
if len(control_guidance_start) != len(self.controlnet.nets):
raise ValueError(
f"`control_guidance_start`: {control_guidance_start} has {len(control_guidance_start)} elements but there are {len(self.controlnet.nets)} controlnets available. Make sure to provide {len(self.controlnet.nets)}."
)
for start, end in zip(control_guidance_start, control_guidance_end):
if start >= end:
raise ValueError(
f"control guidance start: {start} cannot be larger or equal to control guidance end: {end}."
)
if start < 0.0:
raise ValueError(f"control guidance start: {start} can't be smaller than 0.")
if end > 1.0:
raise ValueError(f"control guidance end: {end} can't be larger than 1.0.")
# Copied from diffusers.pipelines.controlnet.pipeline_controlnet.StableDiffusionControlNetPipeline.check_image
def check_image(self, image, prompt, prompt_embeds):
image_is_pil = isinstance(image, PIL.Image.Image)
image_is_tensor = isinstance(image, torch.Tensor)
image_is_np = isinstance(image, np.ndarray)
image_is_pil_list = isinstance(image, list) and isinstance(image[0], PIL.Image.Image)
image_is_tensor_list = isinstance(image, list) and isinstance(image[0], torch.Tensor)
image_is_np_list = isinstance(image, list) and isinstance(image[0], np.ndarray)
if (
not image_is_pil
and not image_is_tensor
and not image_is_np
and not image_is_pil_list
and not image_is_tensor_list
and not image_is_np_list
):
raise TypeError(
f"image must be passed and be one of PIL image, numpy array, torch tensor, list of PIL images, list of numpy arrays or list of torch tensors, but is {type(image)}"
)
if image_is_pil:
image_batch_size = 1
else:
image_batch_size = len(image)
if prompt is not None and isinstance(prompt, str):
prompt_batch_size = 1
elif prompt is not None and isinstance(prompt, list):
prompt_batch_size = len(prompt)
elif prompt_embeds is not None:
prompt_batch_size = prompt_embeds.shape[0]
if image_batch_size != 1 and image_batch_size != prompt_batch_size:
raise ValueError(
f"If image batch size is not 1, image batch size must be same as prompt batch size. image batch size: {image_batch_size}, prompt batch size: {prompt_batch_size}"
)
# Copied from diffusers.pipelines.controlnet.pipeline_controlnet.StableDiffusionControlNetPipeline.prepare_image
def prepare_image(
self,
image,
width,
height,
batch_size,
num_images_per_prompt,
device,
dtype,
do_classifier_free_guidance=False,
guess_mode=False,
):
image = self.control_image_processor.preprocess(image, height=height, width=width).to(dtype=torch.float32)
image_batch_size = image.shape[0]
if image_batch_size == 1:
repeat_by = batch_size
else:
# image batch size is the same as prompt batch size
repeat_by = num_images_per_prompt
image = image.repeat_interleave(repeat_by, dim=0)
image = image.to(device=device, dtype=dtype)
if do_classifier_free_guidance and not guess_mode:
image = torch.cat([image] * 2)
return image
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.prepare_latents
def prepare_latents(self, batch_size, num_channels_latents, height, width, dtype, device, generator, latents=None):
shape = (batch_size, num_channels_latents, height // self.vae_scale_factor, width // self.vae_scale_factor)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
latents = latents.to(device)
# scale the initial noise by the standard deviation required by the scheduler
latents = latents * self.scheduler.init_noise_sigma
return latents
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline._get_add_time_ids
def _get_add_time_ids(
self, original_size, crops_coords_top_left, target_size, dtype, text_encoder_projection_dim=None
):
add_time_ids = list(original_size + crops_coords_top_left + target_size)
passed_add_embed_dim = (
self.unet.config.addition_time_embed_dim * len(add_time_ids) + text_encoder_projection_dim
)
expected_add_embed_dim = self.unet.add_embedding.linear_1.in_features
if expected_add_embed_dim != passed_add_embed_dim:
raise ValueError(
f"Model expects an added time embedding vector of length {expected_add_embed_dim}, but a vector of {passed_add_embed_dim} was created. The model has an incorrect config. Please check `unet.config.time_embedding_type` and `text_encoder_2.config.projection_dim`."
)
add_time_ids = torch.tensor([add_time_ids], dtype=dtype)
return add_time_ids
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion_upscale.StableDiffusionUpscalePipeline.upcast_vae
def upcast_vae(self):
dtype = self.vae.dtype
self.vae.to(dtype=torch.float32)
use_torch_2_0_or_xformers = isinstance(
self.vae.decoder.mid_block.attentions[0].processor,
(
AttnProcessor2_0,
XFormersAttnProcessor,
LoRAXFormersAttnProcessor,
LoRAAttnProcessor2_0,
),
)
# if xformers or torch_2_0 is used attention block does not need
# to be in float32 which can save lots of memory
if use_torch_2_0_or_xformers:
self.vae.post_quant_conv.to(dtype)
self.vae.decoder.conv_in.to(dtype)
self.vae.decoder.mid_block.to(dtype)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_freeu
def enable_freeu(self, s1: float, s2: float, b1: float, b2: float):
r"""Enables the FreeU mechanism as in https://arxiv.org/abs/2309.11497.
The suffixes after the scaling factors represent the stages where they are being applied.
Please refer to the [official repository](https://github.com/ChenyangSi/FreeU) for combinations of the values
that are known to work well for different pipelines such as Stable Diffusion v1, v2, and Stable Diffusion XL.
Args:
s1 (`float`):
Scaling factor for stage 1 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
s2 (`float`):
Scaling factor for stage 2 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
b1 (`float`): Scaling factor for stage 1 to amplify the contributions of backbone features.
b2 (`float`): Scaling factor for stage 2 to amplify the contributions of backbone features.
"""
if not hasattr(self, "unet"):
raise ValueError("The pipeline must have `unet` for using FreeU.")
self.unet.enable_freeu(s1=s1, s2=s2, b1=b1, b2=b2)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_freeu
def disable_freeu(self):
"""Disables the FreeU mechanism if enabled."""
self.unet.disable_freeu()
# Copied from diffusers.pipelines.latent_consistency_models.pipeline_latent_consistency_text2img.LatentConsistencyModelPipeline.get_guidance_scale_embedding
def get_guidance_scale_embedding(self, w, embedding_dim=512, dtype=torch.float32):
"""
See https://github.com/google-research/vdm/blob/dc27b98a554f65cdc654b800da5aa1846545d41b/model_vdm.py#L298
Args:
timesteps (`torch.Tensor`):
generate embedding vectors at these timesteps
embedding_dim (`int`, *optional*, defaults to 512):
dimension of the embeddings to generate
dtype:
data type of the generated embeddings
Returns:
`torch.FloatTensor`: Embedding vectors with shape `(len(timesteps), embedding_dim)`
"""
assert len(w.shape) == 1
w = w * 1000.0
half_dim = embedding_dim // 2
emb = torch.log(torch.tensor(10000.0)) / (half_dim - 1)
emb = torch.exp(torch.arange(half_dim, dtype=dtype) * -emb)
emb = w.to(dtype)[:, None] * emb[None, :]
emb = torch.cat([torch.sin(emb), torch.cos(emb)], dim=1)
if embedding_dim % 2 == 1: # zero pad
emb = torch.nn.functional.pad(emb, (0, 1))
assert emb.shape == (w.shape[0], embedding_dim)
return emb
@property
def guidance_scale(self):
return self._guidance_scale
@property
def clip_skip(self):
return self._clip_skip
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
@property
def do_classifier_free_guidance(self):
return self._guidance_scale > 1 and self.unet.config.time_cond_proj_dim is None
@property
def cross_attention_kwargs(self):
return self._cross_attention_kwargs
@property
def num_timesteps(self):
return self._num_timesteps
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
prompt: Union[str, List[str]] = None,
prompt_2: Optional[Union[str, List[str]]] = None,
image: PipelineImageInput = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 5.0,
negative_prompt: Optional[Union[str, List[str]]] = None,
negative_prompt_2: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
eta: float = 0.0,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.FloatTensor] = None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
ip_adapter_image: Optional[PipelineImageInput] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
cross_attention_kwargs: Optional[Dict[str, Any]] = None,
controlnet_conditioning_scale: Union[float, List[float]] = 1.0,
guess_mode: bool = False,
control_guidance_start: Union[float, List[float]] = 0.0,
control_guidance_end: Union[float, List[float]] = 1.0,
original_size: Tuple[int, int] = None,
crops_coords_top_left: Tuple[int, int] = (0, 0),
target_size: Tuple[int, int] = None,
negative_original_size: Optional[Tuple[int, int]] = None,
negative_crops_coords_top_left: Tuple[int, int] = (0, 0),
negative_target_size: Optional[Tuple[int, int]] = None,
clip_skip: Optional[int] = None,
callback_on_step_end: Optional[Callable[[int, int, Dict], None]] = None,
callback_on_step_end_tensor_inputs: List[str] = ["latents"],
**kwargs,
):
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide image generation. If not defined, you need to pass `prompt_embeds`.
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders.
image (`torch.FloatTensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.FloatTensor]`, `List[PIL.Image.Image]`, `List[np.ndarray]`,:
`List[List[torch.FloatTensor]]`, `List[List[np.ndarray]]` or `List[List[PIL.Image.Image]]`):
The ControlNet input condition to provide guidance to the `unet` for generation. If the type is
specified as `torch.FloatTensor`, it is passed to ControlNet as is. `PIL.Image.Image` can also be
accepted as an image. The dimensions of the output image defaults to `image`'s dimensions. If height
and/or width are passed, `image` is resized accordingly. If multiple ControlNets are specified in
`init`, images must be passed as a list such that each element of the list can be correctly batched for
input to a single ControlNet.
height (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The height in pixels of the generated image. Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
width (`int`, *optional*, defaults to `self.unet.config.sample_size * self.vae_scale_factor`):
The width in pixels of the generated image. Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 5.0):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. This is sent to `tokenizer_2`
and `text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders.
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.FloatTensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs (prompt weighting). If not
provided, text embeddings are generated from the `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
not provided, `negative_prompt_embeds` are generated from the `negative_prompt` input argument.
pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs (prompt weighting). If
not provided, pooled text embeddings are generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs (prompt
weighting). If not provided, pooled `negative_prompt_embeds` are generated from `negative_prompt` input
argument.
ip_adapter_image: (`PipelineImageInput`, *optional*): Optional image input to work with IP Adapters.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
cross_attention_kwargs (`dict`, *optional*):
A kwargs dictionary that if specified is passed along to the [`AttentionProcessor`] as defined in
[`self.processor`](https://github.com/huggingface/diffusers/blob/main/src/diffusers/models/attention_processor.py).
controlnet_conditioning_scale (`float` or `List[float]`, *optional*, defaults to 1.0):
The outputs of the ControlNet are multiplied by `controlnet_conditioning_scale` before they are added
to the residual in the original `unet`. If multiple ControlNets are specified in `init`, you can set
the corresponding scale as a list.
guess_mode (`bool`, *optional*, defaults to `False`):
The ControlNet encoder tries to recognize the content of the input image even if you remove all
prompts. A `guidance_scale` value between 3.0 and 5.0 is recommended.
control_guidance_start (`float` or `List[float]`, *optional*, defaults to 0.0):
The percentage of total steps at which the ControlNet starts applying.
control_guidance_end (`float` or `List[float]`, *optional*, defaults to 1.0):
The percentage of total steps at which the ControlNet stops applying.
original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
If `original_size` is not the same as `target_size` the image will appear to be down- or upsampled.
`original_size` defaults to `(height, width)` if not specified. Part of SDXL's micro-conditioning as
explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
`crops_coords_top_left` can be used to generate an image that appears to be "cropped" from the position
`crops_coords_top_left` downwards. Favorable, well-centered images are usually achieved by setting
`crops_coords_top_left` to (0, 0). Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
For most cases, `target_size` should be set to the desired height and width of the generated image. If
not specified it will default to `(height, width)`. Part of SDXL's micro-conditioning as explained in
section 2.2 of [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
negative_original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a specific image resolution. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
To negatively condition the generation process based on a specific crop coordinates. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a target image resolution. It should be as same
as the `target_size` for most cases. Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
callback_on_step_end (`Callable`, *optional*):
A function that calls at the end of each denoising steps during the inference. The function is called
with the following arguments: `callback_on_step_end(self: DiffusionPipeline, step: int, timestep: int,
callback_kwargs: Dict)`. `callback_kwargs` will include a list of all tensors as specified by
`callback_on_step_end_tensor_inputs`.
callback_on_step_end_tensor_inputs (`List`, *optional*):
The list of tensor inputs for the `callback_on_step_end` function. The tensors specified in the list
will be passed as `callback_kwargs` argument. You will only be able to include variables listed in the
`._callback_tensor_inputs` attribute of your pipeine class.
Examples:
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] is returned,
otherwise a `tuple` is returned containing the output images.
"""
callback = kwargs.pop("callback", None)
callback_steps = kwargs.pop("callback_steps", None)
if callback is not None:
deprecate(
"callback",
"1.0.0",
"Passing `callback` as an input argument to `__call__` is deprecated, consider using `callback_on_step_end`",
)
if callback_steps is not None:
deprecate(
"callback_steps",
"1.0.0",
"Passing `callback_steps` as an input argument to `__call__` is deprecated, consider using `callback_on_step_end`",
)
controlnet = self.controlnet._orig_mod if is_compiled_module(self.controlnet) else self.controlnet
# align format for control guidance
if not isinstance(control_guidance_start, list) and isinstance(control_guidance_end, list):
control_guidance_start = len(control_guidance_end) * [control_guidance_start]
elif not isinstance(control_guidance_end, list) and isinstance(control_guidance_start, list):
control_guidance_end = len(control_guidance_start) * [control_guidance_end]
elif not isinstance(control_guidance_start, list) and not isinstance(control_guidance_end, list):
mult = len(controlnet.nets) if isinstance(controlnet, MultiControlNetModel) else 1
control_guidance_start, control_guidance_end = (
mult * [control_guidance_start],
mult * [control_guidance_end],
)
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt,
prompt_2,
image,
callback_steps,
negative_prompt,
negative_prompt_2,
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
controlnet_conditioning_scale,
control_guidance_start,
control_guidance_end,
callback_on_step_end_tensor_inputs,
)
self._guidance_scale = guidance_scale
self._clip_skip = clip_skip
self._cross_attention_kwargs = cross_attention_kwargs
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
if isinstance(controlnet, MultiControlNetModel) and isinstance(controlnet_conditioning_scale, float):
controlnet_conditioning_scale = [controlnet_conditioning_scale] * len(controlnet.nets)
global_pool_conditions = (
controlnet.config.global_pool_conditions
if isinstance(controlnet, ControlNetModel)
else controlnet.nets[0].config.global_pool_conditions
)
guess_mode = guess_mode or global_pool_conditions
# 3.1 Encode input prompt
text_encoder_lora_scale = (
self.cross_attention_kwargs.get("scale", None) if self.cross_attention_kwargs is not None else None
)
(
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
) = self.encode_prompt(
prompt,
prompt_2,
device,
num_images_per_prompt,
self.do_classifier_free_guidance,
negative_prompt,
negative_prompt_2,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
negative_pooled_prompt_embeds=negative_pooled_prompt_embeds,
lora_scale=text_encoder_lora_scale,
clip_skip=self.clip_skip,
)
# 3.2 Encode ip_adapter_image
if ip_adapter_image is not None:
image_embeds = self.prepare_ip_adapter_image_embeds(
ip_adapter_image, device, batch_size * num_images_per_prompt
)
# 4. Prepare image
if isinstance(controlnet, ControlNetModel):
image = self.prepare_image(
image=image,
width=width,
height=height,
batch_size=batch_size * num_images_per_prompt,
num_images_per_prompt=num_images_per_prompt,
device=device,
dtype=controlnet.dtype,
do_classifier_free_guidance=self.do_classifier_free_guidance,
guess_mode=guess_mode,
)
height, width = image.shape[-2:]
elif isinstance(controlnet, MultiControlNetModel):
images = []
for image_ in image:
image_ = self.prepare_image(
image=image_,
width=width,
height=height,
batch_size=batch_size * num_images_per_prompt,
num_images_per_prompt=num_images_per_prompt,
device=device,
dtype=controlnet.dtype,
do_classifier_free_guidance=self.do_classifier_free_guidance,
guess_mode=guess_mode,
)
images.append(image_)
image = images
height, width = image[0].shape[-2:]
else:
assert False
# 5. Prepare timesteps
self.scheduler.set_timesteps(num_inference_steps, device=device)
timesteps = self.scheduler.timesteps
self._num_timesteps = len(timesteps)
# 6. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
batch_size * num_images_per_prompt,
num_channels_latents,
height,
width,
prompt_embeds.dtype,
device,
generator,
latents,
)
# 6.5 Optionally get Guidance Scale Embedding
timestep_cond = None
if self.unet.config.time_cond_proj_dim is not None:
guidance_scale_tensor = torch.tensor(self.guidance_scale - 1).repeat(batch_size * num_images_per_prompt)
timestep_cond = self.get_guidance_scale_embedding(
guidance_scale_tensor, embedding_dim=self.unet.config.time_cond_proj_dim
).to(device=device, dtype=latents.dtype)
# 7. Prepare extra step kwargs. TODO: Logic should ideally just be moved out of the pipeline
extra_step_kwargs = self.prepare_extra_step_kwargs(generator, eta)
# 7.1 Create tensor stating which controlnets to keep
controlnet_keep = []
for i in range(len(timesteps)):
keeps = [
1.0 - float(i / len(timesteps) < s or (i + 1) / len(timesteps) > e)
for s, e in zip(control_guidance_start, control_guidance_end)
]
controlnet_keep.append(keeps[0] if isinstance(controlnet, ControlNetModel) else keeps)
# 7.2 Prepare added time ids & embeddings
if isinstance(image, list):
original_size = original_size or image[0].shape[-2:]
else:
original_size = original_size or image.shape[-2:]
target_size = target_size or (height, width)
add_text_embeds = pooled_prompt_embeds
if self.text_encoder_2 is None:
text_encoder_projection_dim = int(pooled_prompt_embeds.shape[-1])
else:
text_encoder_projection_dim = self.text_encoder_2.config.projection_dim
add_time_ids = self._get_add_time_ids(
original_size,
crops_coords_top_left,
target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
if negative_original_size is not None and negative_target_size is not None:
negative_add_time_ids = self._get_add_time_ids(
negative_original_size,
negative_crops_coords_top_left,
negative_target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
else:
negative_add_time_ids = add_time_ids
if self.do_classifier_free_guidance:
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0)
add_text_embeds = torch.cat([negative_pooled_prompt_embeds, add_text_embeds], dim=0)
add_time_ids = torch.cat([negative_add_time_ids, add_time_ids], dim=0)
prompt_embeds = prompt_embeds.to(device)
add_text_embeds = add_text_embeds.to(device)
add_time_ids = add_time_ids.to(device).repeat(batch_size * num_images_per_prompt, 1)
# 8. Denoising loop
num_warmup_steps = len(timesteps) - num_inference_steps * self.scheduler.order
is_unet_compiled = is_compiled_module(self.unet)
is_controlnet_compiled = is_compiled_module(self.controlnet)
is_torch_higher_equal_2_1 = is_torch_version(">=", "2.1")
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
# Relevant thread:
# https://dev-discuss.pytorch.org/t/cudagraphs-in-pytorch-2-0/1428
if (is_unet_compiled and is_controlnet_compiled) and is_torch_higher_equal_2_1:
torch._inductor.cudagraph_mark_step_begin()
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if self.do_classifier_free_guidance else latents
latent_model_input = self.scheduler.scale_model_input(latent_model_input, t)
added_cond_kwargs = {"text_embeds": add_text_embeds, "time_ids": add_time_ids}
# controlnet(s) inference
if guess_mode and self.do_classifier_free_guidance:
# Infer ControlNet only for the conditional batch.
control_model_input = latents
control_model_input = self.scheduler.scale_model_input(control_model_input, t)
controlnet_prompt_embeds = prompt_embeds.chunk(2)[1]
controlnet_added_cond_kwargs = {
"text_embeds": add_text_embeds.chunk(2)[1],
"time_ids": add_time_ids.chunk(2)[1],
}
else:
control_model_input = latent_model_input
controlnet_prompt_embeds = prompt_embeds
controlnet_added_cond_kwargs = added_cond_kwargs
if isinstance(controlnet_keep[i], list):
cond_scale = [c * s for c, s in zip(controlnet_conditioning_scale, controlnet_keep[i])]
else:
controlnet_cond_scale = controlnet_conditioning_scale
if isinstance(controlnet_cond_scale, list):
controlnet_cond_scale = controlnet_cond_scale[0]
cond_scale = controlnet_cond_scale * controlnet_keep[i]
down_block_res_samples, mid_block_res_sample = self.controlnet(
control_model_input,
t,
encoder_hidden_states=controlnet_prompt_embeds,
controlnet_cond=image,
conditioning_scale=cond_scale,
guess_mode=guess_mode,
added_cond_kwargs=controlnet_added_cond_kwargs,
return_dict=False,
)
if guess_mode and self.do_classifier_free_guidance:
# Infered ControlNet only for the conditional batch.
# To apply the output of ControlNet to both the unconditional and conditional batches,
# add 0 to the unconditional batch to keep it unchanged.
down_block_res_samples = [torch.cat([torch.zeros_like(d), d]) for d in down_block_res_samples]
mid_block_res_sample = torch.cat([torch.zeros_like(mid_block_res_sample), mid_block_res_sample])
if ip_adapter_image is not None:
added_cond_kwargs["image_embeds"] = image_embeds
# predict the noise residual
noise_pred = self.unet(
latent_model_input,
t,
encoder_hidden_states=prompt_embeds,
timestep_cond=timestep_cond,
cross_attention_kwargs=self.cross_attention_kwargs,
down_block_additional_residuals=down_block_res_samples,
mid_block_additional_residual=mid_block_res_sample,
added_cond_kwargs=added_cond_kwargs,
return_dict=False,
)[0]
# perform guidance
if self.do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents, **extra_step_kwargs, return_dict=False)[0]
if callback_on_step_end is not None:
callback_kwargs = {}
for k in callback_on_step_end_tensor_inputs:
callback_kwargs[k] = locals()[k]
callback_outputs = callback_on_step_end(self, i, t, callback_kwargs)
latents = callback_outputs.pop("latents", latents)
prompt_embeds = callback_outputs.pop("prompt_embeds", prompt_embeds)
negative_prompt_embeds = callback_outputs.pop("negative_prompt_embeds", negative_prompt_embeds)
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if callback is not None and i % callback_steps == 0:
step_idx = i // getattr(self.scheduler, "order", 1)
callback(step_idx, t, latents)
if not output_type == "latent":
# make sure the VAE is in float32 mode, as it overflows in float16
needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast
if needs_upcasting:
self.upcast_vae()
latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype)
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
# cast back to fp16 if needed
if needs_upcasting:
self.vae.to(dtype=torch.float16)
else:
image = latents
if not output_type == "latent":
# apply watermark if available
if self.watermark is not None:
image = self.watermark.apply_watermark(image)
image = self.image_processor.postprocess(image, output_type=output_type)
# Offload all models
self.maybe_free_model_hooks()
if not return_dict:
return (image,)
return StableDiffusionXLPipelineOutput(images=image)
| diffusers/src/diffusers/pipelines/controlnet/pipeline_controlnet_sd_xl.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/controlnet/pipeline_controlnet_sd_xl.py",
"repo_id": "diffusers",
"token_count": 33443
} | 128 |
from dataclasses import dataclass
from typing import List, Optional, Union
import numpy as np
import PIL.Image
from ...utils import BaseOutput
@dataclass
class IFPipelineOutput(BaseOutput):
"""
Args:
Output class for Stable Diffusion pipelines.
images (`List[PIL.Image.Image]` or `np.ndarray`)
List of denoised PIL images of length `batch_size` or numpy array of shape `(batch_size, height, width,
num_channels)`. PIL images or numpy array present the denoised images of the diffusion pipeline.
nsfw_detected (`List[bool]`)
List of flags denoting whether the corresponding generated image likely represents "not-safe-for-work"
(nsfw) content or a watermark. `None` if safety checking could not be performed.
watermark_detected (`List[bool]`)
List of flags denoting whether the corresponding generated image likely has a watermark. `None` if safety
checking could not be performed.
"""
images: Union[List[PIL.Image.Image], np.ndarray]
nsfw_detected: Optional[List[bool]]
watermark_detected: Optional[List[bool]]
| diffusers/src/diffusers/pipelines/deepfloyd_if/pipeline_output.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/deepfloyd_if/pipeline_output.py",
"repo_id": "diffusers",
"token_count": 409
} | 129 |
from typing import TYPE_CHECKING
from ....utils import DIFFUSERS_SLOW_IMPORT, _LazyModule
_import_structure = {"pipeline_pndm": ["PNDMPipeline"]}
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
from .pipeline_pndm import PNDMPipeline
else:
import sys
sys.modules[__name__] = _LazyModule(
__name__,
globals()["__file__"],
_import_structure,
module_spec=__spec__,
)
| diffusers/src/diffusers/pipelines/deprecated/pndm/__init__.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/deprecated/pndm/__init__.py",
"repo_id": "diffusers",
"token_count": 182
} | 130 |
from typing import TYPE_CHECKING
from ...utils import (
DIFFUSERS_SLOW_IMPORT,
OptionalDependencyNotAvailable,
_LazyModule,
get_objects_from_module,
is_torch_available,
is_transformers_available,
)
_dummy_objects = {}
_import_structure = {}
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ...utils import dummy_torch_and_transformers_objects # noqa F403
_dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
else:
_import_structure["pipeline_kandinsky"] = ["KandinskyPipeline"]
_import_structure["pipeline_kandinsky_combined"] = [
"KandinskyCombinedPipeline",
"KandinskyImg2ImgCombinedPipeline",
"KandinskyInpaintCombinedPipeline",
]
_import_structure["pipeline_kandinsky_img2img"] = ["KandinskyImg2ImgPipeline"]
_import_structure["pipeline_kandinsky_inpaint"] = ["KandinskyInpaintPipeline"]
_import_structure["pipeline_kandinsky_prior"] = ["KandinskyPriorPipeline", "KandinskyPriorPipelineOutput"]
_import_structure["text_encoder"] = ["MultilingualCLIP"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ...utils.dummy_torch_and_transformers_objects import *
else:
from .pipeline_kandinsky import KandinskyPipeline
from .pipeline_kandinsky_combined import (
KandinskyCombinedPipeline,
KandinskyImg2ImgCombinedPipeline,
KandinskyInpaintCombinedPipeline,
)
from .pipeline_kandinsky_img2img import KandinskyImg2ImgPipeline
from .pipeline_kandinsky_inpaint import KandinskyInpaintPipeline
from .pipeline_kandinsky_prior import KandinskyPriorPipeline, KandinskyPriorPipelineOutput
from .text_encoder import MultilingualCLIP
else:
import sys
sys.modules[__name__] = _LazyModule(
__name__,
globals()["__file__"],
_import_structure,
module_spec=__spec__,
)
for name, value in _dummy_objects.items():
setattr(sys.modules[__name__], name, value)
| diffusers/src/diffusers/pipelines/kandinsky/__init__.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/kandinsky/__init__.py",
"repo_id": "diffusers",
"token_count": 951
} | 131 |
from typing import TYPE_CHECKING
from ...utils import (
DIFFUSERS_SLOW_IMPORT,
OptionalDependencyNotAvailable,
_LazyModule,
get_objects_from_module,
is_torch_available,
is_transformers_available,
)
_dummy_objects = {}
_import_structure = {}
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ...utils import dummy_torch_and_transformers_objects
_dummy_objects.update(get_objects_from_module(dummy_torch_and_transformers_objects))
else:
_import_structure["pipeline_pia"] = ["PIAPipeline", "PIAPipelineOutput"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
try:
if not (is_transformers_available() and is_torch_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ...utils.dummy_torch_and_transformers_objects import *
else:
from .pipeline_pia import PIAPipeline, PIAPipelineOutput
else:
import sys
sys.modules[__name__] = _LazyModule(
__name__,
globals()["__file__"],
_import_structure,
module_spec=__spec__,
)
for name, value in _dummy_objects.items():
setattr(sys.modules[__name__], name, value)
| diffusers/src/diffusers/pipelines/pia/__init__.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/pia/__init__.py",
"repo_id": "diffusers",
"token_count": 515
} | 132 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import warnings
from typing import Callable, List, Optional, Union
import numpy as np
import PIL.Image
import torch
import torch.nn.functional as F
from transformers import CLIPTextModel, CLIPTokenizer
from ...image_processor import PipelineImageInput, VaeImageProcessor
from ...loaders import FromSingleFileMixin
from ...models import AutoencoderKL, UNet2DConditionModel
from ...schedulers import EulerDiscreteScheduler
from ...utils import deprecate, logging
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion_upscale.preprocess
def preprocess(image):
warnings.warn(
"The preprocess method is deprecated and will be removed in a future version. Please"
" use VaeImageProcessor.preprocess instead",
FutureWarning,
)
if isinstance(image, torch.Tensor):
return image
elif isinstance(image, PIL.Image.Image):
image = [image]
if isinstance(image[0], PIL.Image.Image):
w, h = image[0].size
w, h = (x - x % 64 for x in (w, h)) # resize to integer multiple of 64
image = [np.array(i.resize((w, h)))[None, :] for i in image]
image = np.concatenate(image, axis=0)
image = np.array(image).astype(np.float32) / 255.0
image = image.transpose(0, 3, 1, 2)
image = 2.0 * image - 1.0
image = torch.from_numpy(image)
elif isinstance(image[0], torch.Tensor):
image = torch.cat(image, dim=0)
return image
class StableDiffusionLatentUpscalePipeline(DiffusionPipeline, FromSingleFileMixin):
r"""
Pipeline for upscaling Stable Diffusion output image resolution by a factor of 2.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
The pipeline also inherits the following loading methods:
- [`~loaders.FromSingleFileMixin.from_single_file`] for loading `.ckpt` files
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
text_encoder ([`~transformers.CLIPTextModel`]):
Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
tokenizer ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
unet ([`UNet2DConditionModel`]):
A `UNet2DConditionModel` to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A [`EulerDiscreteScheduler`] to be used in combination with `unet` to denoise the encoded image latents.
"""
model_cpu_offload_seq = "text_encoder->unet->vae"
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
tokenizer: CLIPTokenizer,
unet: UNet2DConditionModel,
scheduler: EulerDiscreteScheduler,
):
super().__init__()
self.register_modules(
vae=vae,
text_encoder=text_encoder,
tokenizer=tokenizer,
unet=unet,
scheduler=scheduler,
)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor, resample="bicubic")
def _encode_prompt(self, prompt, device, do_classifier_free_guidance, negative_prompt):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `list(int)`):
prompt to be encoded
device: (`torch.device`):
torch device
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`):
The prompt or prompts not to guide the image generation. Ignored when not using guidance (i.e., ignored
if `guidance_scale` is less than `1`).
"""
batch_size = len(prompt) if isinstance(prompt, list) else 1
text_inputs = self.tokenizer(
prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
truncation=True,
return_length=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = self.tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(text_input_ids, untruncated_ids):
removed_text = self.tokenizer.batch_decode(untruncated_ids[:, self.tokenizer.model_max_length - 1 : -1])
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {self.tokenizer.model_max_length} tokens: {removed_text}"
)
text_encoder_out = self.text_encoder(
text_input_ids.to(device),
output_hidden_states=True,
)
text_embeddings = text_encoder_out.hidden_states[-1]
text_pooler_out = text_encoder_out.pooler_output
# get unconditional embeddings for classifier free guidance
if do_classifier_free_guidance:
uncond_tokens: List[str]
if negative_prompt is None:
uncond_tokens = [""] * batch_size
elif type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif isinstance(negative_prompt, str):
uncond_tokens = [negative_prompt]
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = negative_prompt
max_length = text_input_ids.shape[-1]
uncond_input = self.tokenizer(
uncond_tokens,
padding="max_length",
max_length=max_length,
truncation=True,
return_length=True,
return_tensors="pt",
)
uncond_encoder_out = self.text_encoder(
uncond_input.input_ids.to(device),
output_hidden_states=True,
)
uncond_embeddings = uncond_encoder_out.hidden_states[-1]
uncond_pooler_out = uncond_encoder_out.pooler_output
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
text_embeddings = torch.cat([uncond_embeddings, text_embeddings])
text_pooler_out = torch.cat([uncond_pooler_out, text_pooler_out])
return text_embeddings, text_pooler_out
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.decode_latents
def decode_latents(self, latents):
deprecation_message = "The decode_latents method is deprecated and will be removed in 1.0.0. Please use VaeImageProcessor.postprocess(...) instead"
deprecate("decode_latents", "1.0.0", deprecation_message, standard_warn=False)
latents = 1 / self.vae.config.scaling_factor * latents
image = self.vae.decode(latents, return_dict=False)[0]
image = (image / 2 + 0.5).clamp(0, 1)
# we always cast to float32 as this does not cause significant overhead and is compatible with bfloat16
image = image.cpu().permute(0, 2, 3, 1).float().numpy()
return image
def check_inputs(self, prompt, image, callback_steps):
if not isinstance(prompt, str) and not isinstance(prompt, list):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
if (
not isinstance(image, torch.Tensor)
and not isinstance(image, PIL.Image.Image)
and not isinstance(image, list)
):
raise ValueError(
f"`image` has to be of type `torch.Tensor`, `PIL.Image.Image` or `list` but is {type(image)}"
)
# verify batch size of prompt and image are same if image is a list or tensor
if isinstance(image, list) or isinstance(image, torch.Tensor):
if isinstance(prompt, str):
batch_size = 1
else:
batch_size = len(prompt)
if isinstance(image, list):
image_batch_size = len(image)
else:
image_batch_size = image.shape[0] if image.ndim == 4 else 1
if batch_size != image_batch_size:
raise ValueError(
f"`prompt` has batch size {batch_size} and `image` has batch size {image_batch_size}."
" Please make sure that passed `prompt` matches the batch size of `image`."
)
if (callback_steps is None) or (
callback_steps is not None and (not isinstance(callback_steps, int) or callback_steps <= 0)
):
raise ValueError(
f"`callback_steps` has to be a positive integer but is {callback_steps} of type"
f" {type(callback_steps)}."
)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion_upscale.StableDiffusionUpscalePipeline.prepare_latents
def prepare_latents(self, batch_size, num_channels_latents, height, width, dtype, device, generator, latents=None):
shape = (batch_size, num_channels_latents, height, width)
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
if latents.shape != shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {shape}")
latents = latents.to(device)
# scale the initial noise by the standard deviation required by the scheduler
latents = latents * self.scheduler.init_noise_sigma
return latents
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_freeu
def enable_freeu(self, s1: float, s2: float, b1: float, b2: float):
r"""Enables the FreeU mechanism as in https://arxiv.org/abs/2309.11497.
The suffixes after the scaling factors represent the stages where they are being applied.
Please refer to the [official repository](https://github.com/ChenyangSi/FreeU) for combinations of the values
that are known to work well for different pipelines such as Stable Diffusion v1, v2, and Stable Diffusion XL.
Args:
s1 (`float`):
Scaling factor for stage 1 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
s2 (`float`):
Scaling factor for stage 2 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
b1 (`float`): Scaling factor for stage 1 to amplify the contributions of backbone features.
b2 (`float`): Scaling factor for stage 2 to amplify the contributions of backbone features.
"""
if not hasattr(self, "unet"):
raise ValueError("The pipeline must have `unet` for using FreeU.")
self.unet.enable_freeu(s1=s1, s2=s2, b1=b1, b2=b2)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_freeu
def disable_freeu(self):
"""Disables the FreeU mechanism if enabled."""
self.unet.disable_freeu()
@torch.no_grad()
def __call__(
self,
prompt: Union[str, List[str]],
image: PipelineImageInput = None,
num_inference_steps: int = 75,
guidance_scale: float = 9.0,
negative_prompt: Optional[Union[str, List[str]]] = None,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.FloatTensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
callback: Optional[Callable[[int, int, torch.FloatTensor], None]] = None,
callback_steps: int = 1,
):
r"""
The call function to the pipeline for generation.
Args:
prompt (`str` or `List[str]`):
The prompt or prompts to guide image upscaling.
image (`torch.FloatTensor`, `PIL.Image.Image`, `np.ndarray`, `List[torch.FloatTensor]`, `List[PIL.Image.Image]`, or `List[np.ndarray]`):
`Image` or tensor representing an image batch to be upscaled. If it's a tensor, it can be either a
latent output from a Stable Diffusion model or an image tensor in the range `[-1, 1]`. It is considered
a `latent` if `image.shape[1]` is `4`; otherwise, it is considered to be an image representation and
encoded using this pipeline's `vae` encoder.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 7.5):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide what to not include in image generation. If not defined, you need to
pass `negative_prompt_embeds` instead. Ignored when not using guidance (`guidance_scale < 1`).
eta (`float`, *optional*, defaults to 0.0):
Corresponds to parameter eta (η) from the [DDIM](https://arxiv.org/abs/2010.02502) paper. Only applies
to the [`~schedulers.DDIMScheduler`], and is ignored in other schedulers.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
latents (`torch.FloatTensor`, *optional*):
Pre-generated noisy latents sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor is generated by sampling using the supplied random `generator`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] instead of a
plain tuple.
callback (`Callable`, *optional*):
A function that calls every `callback_steps` steps during inference. The function is called with the
following arguments: `callback(step: int, timestep: int, latents: torch.FloatTensor)`.
callback_steps (`int`, *optional*, defaults to 1):
The frequency at which the `callback` function is called. If not specified, the callback is called at
every step.
Examples:
```py
>>> from diffusers import StableDiffusionLatentUpscalePipeline, StableDiffusionPipeline
>>> import torch
>>> pipeline = StableDiffusionPipeline.from_pretrained(
... "CompVis/stable-diffusion-v1-4", torch_dtype=torch.float16
... )
>>> pipeline.to("cuda")
>>> model_id = "stabilityai/sd-x2-latent-upscaler"
>>> upscaler = StableDiffusionLatentUpscalePipeline.from_pretrained(model_id, torch_dtype=torch.float16)
>>> upscaler.to("cuda")
>>> prompt = "a photo of an astronaut high resolution, unreal engine, ultra realistic"
>>> generator = torch.manual_seed(33)
>>> low_res_latents = pipeline(prompt, generator=generator, output_type="latent").images
>>> with torch.no_grad():
... image = pipeline.decode_latents(low_res_latents)
>>> image = pipeline.numpy_to_pil(image)[0]
>>> image.save("../images/a1.png")
>>> upscaled_image = upscaler(
... prompt=prompt,
... image=low_res_latents,
... num_inference_steps=20,
... guidance_scale=0,
... generator=generator,
... ).images[0]
>>> upscaled_image.save("../images/a2.png")
```
Returns:
[`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.stable_diffusion.StableDiffusionPipelineOutput`] is returned,
otherwise a `tuple` is returned where the first element is a list with the generated images.
"""
# 1. Check inputs
self.check_inputs(prompt, image, callback_steps)
# 2. Define call parameters
batch_size = 1 if isinstance(prompt, str) else len(prompt)
device = self._execution_device
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
do_classifier_free_guidance = guidance_scale > 1.0
if guidance_scale == 0:
prompt = [""] * batch_size
# 3. Encode input prompt
text_embeddings, text_pooler_out = self._encode_prompt(
prompt, device, do_classifier_free_guidance, negative_prompt
)
# 4. Preprocess image
image = self.image_processor.preprocess(image)
image = image.to(dtype=text_embeddings.dtype, device=device)
if image.shape[1] == 3:
# encode image if not in latent-space yet
image = self.vae.encode(image).latent_dist.sample() * self.vae.config.scaling_factor
# 5. set timesteps
self.scheduler.set_timesteps(num_inference_steps, device=device)
timesteps = self.scheduler.timesteps
batch_multiplier = 2 if do_classifier_free_guidance else 1
image = image[None, :] if image.ndim == 3 else image
image = torch.cat([image] * batch_multiplier)
# 5. Add noise to image (set to be 0):
# (see below notes from the author):
# "the This step theoretically can make the model work better on out-of-distribution inputs, but mostly just seems to make it match the input less, so it's turned off by default."
noise_level = torch.tensor([0.0], dtype=torch.float32, device=device)
noise_level = torch.cat([noise_level] * image.shape[0])
inv_noise_level = (noise_level**2 + 1) ** (-0.5)
image_cond = F.interpolate(image, scale_factor=2, mode="nearest") * inv_noise_level[:, None, None, None]
image_cond = image_cond.to(text_embeddings.dtype)
noise_level_embed = torch.cat(
[
torch.ones(text_pooler_out.shape[0], 64, dtype=text_pooler_out.dtype, device=device),
torch.zeros(text_pooler_out.shape[0], 64, dtype=text_pooler_out.dtype, device=device),
],
dim=1,
)
timestep_condition = torch.cat([noise_level_embed, text_pooler_out], dim=1)
# 6. Prepare latent variables
height, width = image.shape[2:]
num_channels_latents = self.vae.config.latent_channels
latents = self.prepare_latents(
batch_size,
num_channels_latents,
height * 2, # 2x upscale
width * 2,
text_embeddings.dtype,
device,
generator,
latents,
)
# 7. Check that sizes of image and latents match
num_channels_image = image.shape[1]
if num_channels_latents + num_channels_image != self.unet.config.in_channels:
raise ValueError(
f"Incorrect configuration settings! The config of `pipeline.unet`: {self.unet.config} expects"
f" {self.unet.config.in_channels} but received `num_channels_latents`: {num_channels_latents} +"
f" `num_channels_image`: {num_channels_image} "
f" = {num_channels_latents+num_channels_image}. Please verify the config of"
" `pipeline.unet` or your `image` input."
)
# 9. Denoising loop
num_warmup_steps = 0
with self.progress_bar(total=num_inference_steps) as progress_bar:
for i, t in enumerate(timesteps):
sigma = self.scheduler.sigmas[i]
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([latents] * 2) if do_classifier_free_guidance else latents
scaled_model_input = self.scheduler.scale_model_input(latent_model_input, t)
scaled_model_input = torch.cat([scaled_model_input, image_cond], dim=1)
# preconditioning parameter based on Karras et al. (2022) (table 1)
timestep = torch.log(sigma) * 0.25
noise_pred = self.unet(
scaled_model_input,
timestep,
encoder_hidden_states=text_embeddings,
timestep_cond=timestep_condition,
).sample
# in original repo, the output contains a variance channel that's not used
noise_pred = noise_pred[:, :-1]
# apply preconditioning, based on table 1 in Karras et al. (2022)
inv_sigma = 1 / (sigma**2 + 1)
noise_pred = inv_sigma * latent_model_input + self.scheduler.scale_model_input(sigma, t) * noise_pred
# perform guidance
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# compute the previous noisy sample x_t -> x_t-1
latents = self.scheduler.step(noise_pred, t, latents).prev_sample
# call the callback, if provided
if i == len(timesteps) - 1 or ((i + 1) > num_warmup_steps and (i + 1) % self.scheduler.order == 0):
progress_bar.update()
if callback is not None and i % callback_steps == 0:
step_idx = i // getattr(self.scheduler, "order", 1)
callback(step_idx, t, latents)
if not output_type == "latent":
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
else:
image = latents
image = self.image_processor.postprocess(image, output_type=output_type)
self.maybe_free_model_hooks()
if not return_dict:
return (image,)
return ImagePipelineOutput(images=image)
| diffusers/src/diffusers/pipelines/stable_diffusion/pipeline_stable_diffusion_latent_upscale.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/stable_diffusion/pipeline_stable_diffusion_latent_upscale.py",
"repo_id": "diffusers",
"token_count": 10812
} | 133 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import importlib
import inspect
from typing import List, Optional, Tuple, Union
import torch
from k_diffusion.external import CompVisDenoiser, CompVisVDenoiser
from k_diffusion.sampling import BrownianTreeNoiseSampler, get_sigmas_karras
from transformers import (
CLIPTextModel,
CLIPTextModelWithProjection,
CLIPTokenizer,
)
from ...image_processor import VaeImageProcessor
from ...loaders import (
FromSingleFileMixin,
IPAdapterMixin,
StableDiffusionXLLoraLoaderMixin,
TextualInversionLoaderMixin,
)
from ...models import AutoencoderKL, UNet2DConditionModel
from ...models.attention_processor import (
AttnProcessor2_0,
FusedAttnProcessor2_0,
LoRAAttnProcessor2_0,
LoRAXFormersAttnProcessor,
XFormersAttnProcessor,
)
from ...models.lora import adjust_lora_scale_text_encoder
from ...schedulers import KarrasDiffusionSchedulers, LMSDiscreteScheduler
from ...utils import (
USE_PEFT_BACKEND,
logging,
replace_example_docstring,
scale_lora_layers,
unscale_lora_layers,
)
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline
from ..stable_diffusion_xl.pipeline_output import StableDiffusionXLPipelineOutput
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
EXAMPLE_DOC_STRING = """
Examples:
```py
>>> import torch
>>> from diffusers import StableDiffusionXLKDiffusionPipeline
>>> pipe = StableDiffusionXLKDiffusionPipeline.from_pretrained(
... "stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16
... )
>>> pipe = pipe.to("cuda")
>>> pipe.set_scheduler("sample_dpmpp_2m_sde")
>>> prompt = "a photo of an astronaut riding a horse on mars"
>>> image = pipe(prompt).images[0]
```
"""
# Copied from diffusers.pipelines.stable_diffusion_k_diffusion.pipeline_stable_diffusion_k_diffusion.ModelWrapper
class ModelWrapper:
def __init__(self, model, alphas_cumprod):
self.model = model
self.alphas_cumprod = alphas_cumprod
def apply_model(self, *args, **kwargs):
if len(args) == 3:
encoder_hidden_states = args[-1]
args = args[:2]
if kwargs.get("cond", None) is not None:
encoder_hidden_states = kwargs.pop("cond")
return self.model(*args, encoder_hidden_states=encoder_hidden_states, **kwargs).sample
class StableDiffusionXLKDiffusionPipeline(
DiffusionPipeline,
FromSingleFileMixin,
StableDiffusionXLLoraLoaderMixin,
TextualInversionLoaderMixin,
IPAdapterMixin,
):
r"""
Pipeline for text-to-image generation using Stable Diffusion XL and k-diffusion.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods the
library implements for all the pipelines (such as downloading or saving, running on a particular device, etc.)
The pipeline also inherits the following loading methods:
- [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
- [`~loaders.FromSingleFileMixin.from_single_file`] for loading `.ckpt` files
- [`~loaders.StableDiffusionXLLoraLoaderMixin.load_lora_weights`] for loading LoRA weights
- [`~loaders.StableDiffusionXLLoraLoaderMixin.save_lora_weights`] for saving LoRA weights
- [`~loaders.IPAdapterMixin.load_ip_adapter`] for loading IP Adapters
Args:
vae ([`AutoencoderKL`]):
Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
text_encoder ([`CLIPTextModel`]):
Frozen text-encoder. Stable Diffusion XL uses the text portion of
[CLIP](https://huggingface.co/docs/transformers/model_doc/clip#transformers.CLIPTextModel), specifically
the [clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14) variant.
text_encoder_2 ([` CLIPTextModelWithProjection`]):
Second frozen text-encoder. Stable Diffusion XL uses the text and pool portion of
[CLIP](https://huggingface.co/docs/transformers/model_doc/clip#transformers.CLIPTextModelWithProjection),
specifically the
[laion/CLIP-ViT-bigG-14-laion2B-39B-b160k](https://huggingface.co/laion/CLIP-ViT-bigG-14-laion2B-39B-b160k)
variant.
tokenizer (`CLIPTokenizer`):
Tokenizer of class
[CLIPTokenizer](https://huggingface.co/docs/transformers/v4.21.0/en/model_doc/clip#transformers.CLIPTokenizer).
tokenizer_2 (`CLIPTokenizer`):
Second Tokenizer of class
[CLIPTokenizer](https://huggingface.co/docs/transformers/v4.21.0/en/model_doc/clip#transformers.CLIPTokenizer).
unet ([`UNet2DConditionModel`]): Conditional U-Net architecture to denoise the encoded image latents.
scheduler ([`SchedulerMixin`]):
A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
[`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
force_zeros_for_empty_prompt (`bool`, *optional*, defaults to `"True"`):
Whether the negative prompt embeddings shall be forced to always be set to 0. Also see the config of
`stabilityai/stable-diffusion-xl-base-1-0`.
"""
model_cpu_offload_seq = "text_encoder->text_encoder_2->unet->vae"
_optional_components = [
"tokenizer",
"tokenizer_2",
"text_encoder",
"text_encoder_2",
"feature_extractor",
]
def __init__(
self,
vae: AutoencoderKL,
text_encoder: CLIPTextModel,
text_encoder_2: CLIPTextModelWithProjection,
tokenizer: CLIPTokenizer,
tokenizer_2: CLIPTokenizer,
unet: UNet2DConditionModel,
scheduler: KarrasDiffusionSchedulers,
force_zeros_for_empty_prompt: bool = True,
):
super().__init__()
# get correct sigmas from LMS
scheduler = LMSDiscreteScheduler.from_config(scheduler.config)
self.register_modules(
vae=vae,
text_encoder=text_encoder,
text_encoder_2=text_encoder_2,
tokenizer=tokenizer,
tokenizer_2=tokenizer_2,
unet=unet,
scheduler=scheduler,
)
self.register_to_config(force_zeros_for_empty_prompt=force_zeros_for_empty_prompt)
self.vae_scale_factor = 2 ** (len(self.vae.config.block_out_channels) - 1)
self.image_processor = VaeImageProcessor(vae_scale_factor=self.vae_scale_factor)
self.default_sample_size = self.unet.config.sample_size
model = ModelWrapper(unet, scheduler.alphas_cumprod)
if scheduler.config.prediction_type == "v_prediction":
self.k_diffusion_model = CompVisVDenoiser(model)
else:
self.k_diffusion_model = CompVisDenoiser(model)
# Copied from diffusers.pipelines.stable_diffusion_k_diffusion.pipeline_stable_diffusion_k_diffusion.StableDiffusionKDiffusionPipeline.set_scheduler
def set_scheduler(self, scheduler_type: str):
library = importlib.import_module("k_diffusion")
sampling = getattr(library, "sampling")
try:
self.sampler = getattr(sampling, scheduler_type)
except Exception:
valid_samplers = []
for s in dir(sampling):
if "sample_" in s:
valid_samplers.append(s)
raise ValueError(f"Invalid scheduler type {scheduler_type}. Please choose one of {valid_samplers}.")
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_slicing
def enable_vae_slicing(self):
r"""
Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to
compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.
"""
self.vae.enable_slicing()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_slicing
def disable_vae_slicing(self):
r"""
Disable sliced VAE decoding. If `enable_vae_slicing` was previously enabled, this method will go back to
computing decoding in one step.
"""
self.vae.disable_slicing()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_vae_tiling
def enable_vae_tiling(self):
r"""
Enable tiled VAE decoding. When this option is enabled, the VAE will split the input tensor into tiles to
compute decoding and encoding in several steps. This is useful for saving a large amount of memory and to allow
processing larger images.
"""
self.vae.enable_tiling()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_vae_tiling
def disable_vae_tiling(self):
r"""
Disable tiled VAE decoding. If `enable_vae_tiling` was previously enabled, this method will go back to
computing decoding in one step.
"""
self.vae.disable_tiling()
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.encode_prompt
def encode_prompt(
self,
prompt: str,
prompt_2: Optional[str] = None,
device: Optional[torch.device] = None,
num_images_per_prompt: int = 1,
do_classifier_free_guidance: bool = True,
negative_prompt: Optional[str] = None,
negative_prompt_2: Optional[str] = None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
lora_scale: Optional[float] = None,
clip_skip: Optional[int] = None,
):
r"""
Encodes the prompt into text encoder hidden states.
Args:
prompt (`str` or `List[str]`, *optional*):
prompt to be encoded
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders
device: (`torch.device`):
torch device
num_images_per_prompt (`int`):
number of images that should be generated per prompt
do_classifier_free_guidance (`bool`):
whether to use classifier free guidance or not
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and
`text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting.
If not provided, pooled text embeddings will be generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt`
input argument.
lora_scale (`float`, *optional*):
A lora scale that will be applied to all LoRA layers of the text encoder if LoRA layers are loaded.
clip_skip (`int`, *optional*):
Number of layers to be skipped from CLIP while computing the prompt embeddings. A value of 1 means that
the output of the pre-final layer will be used for computing the prompt embeddings.
"""
device = device or self._execution_device
# set lora scale so that monkey patched LoRA
# function of text encoder can correctly access it
if lora_scale is not None and isinstance(self, StableDiffusionXLLoraLoaderMixin):
self._lora_scale = lora_scale
# dynamically adjust the LoRA scale
if self.text_encoder is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder, lora_scale)
else:
scale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if not USE_PEFT_BACKEND:
adjust_lora_scale_text_encoder(self.text_encoder_2, lora_scale)
else:
scale_lora_layers(self.text_encoder_2, lora_scale)
prompt = [prompt] if isinstance(prompt, str) else prompt
if prompt is not None:
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
# Define tokenizers and text encoders
tokenizers = [self.tokenizer, self.tokenizer_2] if self.tokenizer is not None else [self.tokenizer_2]
text_encoders = (
[self.text_encoder, self.text_encoder_2] if self.text_encoder is not None else [self.text_encoder_2]
)
if prompt_embeds is None:
prompt_2 = prompt_2 or prompt
prompt_2 = [prompt_2] if isinstance(prompt_2, str) else prompt_2
# textual inversion: procecss multi-vector tokens if necessary
prompt_embeds_list = []
prompts = [prompt, prompt_2]
for prompt, tokenizer, text_encoder in zip(prompts, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
prompt = self.maybe_convert_prompt(prompt, tokenizer)
text_inputs = tokenizer(
prompt,
padding="max_length",
max_length=tokenizer.model_max_length,
truncation=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = tokenizer(prompt, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = tokenizer.batch_decode(untruncated_ids[:, tokenizer.model_max_length - 1 : -1])
logger.warning(
"The following part of your input was truncated because CLIP can only handle sequences up to"
f" {tokenizer.model_max_length} tokens: {removed_text}"
)
prompt_embeds = text_encoder(text_input_ids.to(device), output_hidden_states=True)
# We are only ALWAYS interested in the pooled output of the final text encoder
pooled_prompt_embeds = prompt_embeds[0]
if clip_skip is None:
prompt_embeds = prompt_embeds.hidden_states[-2]
else:
# "2" because SDXL always indexes from the penultimate layer.
prompt_embeds = prompt_embeds.hidden_states[-(clip_skip + 2)]
prompt_embeds_list.append(prompt_embeds)
prompt_embeds = torch.concat(prompt_embeds_list, dim=-1)
# get unconditional embeddings for classifier free guidance
zero_out_negative_prompt = negative_prompt is None and self.config.force_zeros_for_empty_prompt
if do_classifier_free_guidance and negative_prompt_embeds is None and zero_out_negative_prompt:
negative_prompt_embeds = torch.zeros_like(prompt_embeds)
negative_pooled_prompt_embeds = torch.zeros_like(pooled_prompt_embeds)
elif do_classifier_free_guidance and negative_prompt_embeds is None:
negative_prompt = negative_prompt or ""
negative_prompt_2 = negative_prompt_2 or negative_prompt
# normalize str to list
negative_prompt = batch_size * [negative_prompt] if isinstance(negative_prompt, str) else negative_prompt
negative_prompt_2 = (
batch_size * [negative_prompt_2] if isinstance(negative_prompt_2, str) else negative_prompt_2
)
uncond_tokens: List[str]
if prompt is not None and type(prompt) is not type(negative_prompt):
raise TypeError(
f"`negative_prompt` should be the same type to `prompt`, but got {type(negative_prompt)} !="
f" {type(prompt)}."
)
elif batch_size != len(negative_prompt):
raise ValueError(
f"`negative_prompt`: {negative_prompt} has batch size {len(negative_prompt)}, but `prompt`:"
f" {prompt} has batch size {batch_size}. Please make sure that passed `negative_prompt` matches"
" the batch size of `prompt`."
)
else:
uncond_tokens = [negative_prompt, negative_prompt_2]
negative_prompt_embeds_list = []
for negative_prompt, tokenizer, text_encoder in zip(uncond_tokens, tokenizers, text_encoders):
if isinstance(self, TextualInversionLoaderMixin):
negative_prompt = self.maybe_convert_prompt(negative_prompt, tokenizer)
max_length = prompt_embeds.shape[1]
uncond_input = tokenizer(
negative_prompt,
padding="max_length",
max_length=max_length,
truncation=True,
return_tensors="pt",
)
negative_prompt_embeds = text_encoder(
uncond_input.input_ids.to(device),
output_hidden_states=True,
)
# We are only ALWAYS interested in the pooled output of the final text encoder
negative_pooled_prompt_embeds = negative_prompt_embeds[0]
negative_prompt_embeds = negative_prompt_embeds.hidden_states[-2]
negative_prompt_embeds_list.append(negative_prompt_embeds)
negative_prompt_embeds = torch.concat(negative_prompt_embeds_list, dim=-1)
if self.text_encoder_2 is not None:
prompt_embeds = prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
prompt_embeds = prompt_embeds.to(dtype=self.unet.dtype, device=device)
bs_embed, seq_len, _ = prompt_embeds.shape
# duplicate text embeddings for each generation per prompt, using mps friendly method
prompt_embeds = prompt_embeds.repeat(1, num_images_per_prompt, 1)
prompt_embeds = prompt_embeds.view(bs_embed * num_images_per_prompt, seq_len, -1)
if do_classifier_free_guidance:
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
if self.text_encoder_2 is not None:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.text_encoder_2.dtype, device=device)
else:
negative_prompt_embeds = negative_prompt_embeds.to(dtype=self.unet.dtype, device=device)
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt, 1)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len, -1)
pooled_prompt_embeds = pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if do_classifier_free_guidance:
negative_pooled_prompt_embeds = negative_pooled_prompt_embeds.repeat(1, num_images_per_prompt).view(
bs_embed * num_images_per_prompt, -1
)
if self.text_encoder is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder, lora_scale)
if self.text_encoder_2 is not None:
if isinstance(self, StableDiffusionXLLoraLoaderMixin) and USE_PEFT_BACKEND:
# Retrieve the original scale by scaling back the LoRA layers
unscale_lora_layers(self.text_encoder_2, lora_scale)
return prompt_embeds, negative_prompt_embeds, pooled_prompt_embeds, negative_pooled_prompt_embeds
def check_inputs(
self,
prompt,
prompt_2,
height,
width,
negative_prompt=None,
negative_prompt_2=None,
prompt_embeds=None,
negative_prompt_embeds=None,
pooled_prompt_embeds=None,
negative_pooled_prompt_embeds=None,
):
if height % 8 != 0 or width % 8 != 0:
raise ValueError(f"`height` and `width` have to be divisible by 8 but are {height} and {width}.")
if prompt is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt_2 is not None and prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `prompt_2`: {prompt_2} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
" only forward one of the two."
)
elif prompt is None and prompt_embeds is None:
raise ValueError(
"Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
)
elif prompt is not None and (not isinstance(prompt, str) and not isinstance(prompt, list)):
raise ValueError(f"`prompt` has to be of type `str` or `list` but is {type(prompt)}")
elif prompt_2 is not None and (not isinstance(prompt_2, str) and not isinstance(prompt_2, list)):
raise ValueError(f"`prompt_2` has to be of type `str` or `list` but is {type(prompt_2)}")
if negative_prompt is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
elif negative_prompt_2 is not None and negative_prompt_embeds is not None:
raise ValueError(
f"Cannot forward both `negative_prompt_2`: {negative_prompt_2} and `negative_prompt_embeds`:"
f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
)
if prompt_embeds is not None and negative_prompt_embeds is not None:
if prompt_embeds.shape != negative_prompt_embeds.shape:
raise ValueError(
"`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
f" {negative_prompt_embeds.shape}."
)
if prompt_embeds is not None and pooled_prompt_embeds is None:
raise ValueError(
"If `prompt_embeds` are provided, `pooled_prompt_embeds` also have to be passed. Make sure to generate `pooled_prompt_embeds` from the same text encoder that was used to generate `prompt_embeds`."
)
if negative_prompt_embeds is not None and negative_pooled_prompt_embeds is None:
raise ValueError(
"If `negative_prompt_embeds` are provided, `negative_pooled_prompt_embeds` also have to be passed. Make sure to generate `negative_pooled_prompt_embeds` from the same text encoder that was used to generate `negative_prompt_embeds`."
)
def prepare_latents(self, batch_size, num_channels_latents, height, width, dtype, device, generator, latents=None):
shape = (batch_size, num_channels_latents, height // self.vae_scale_factor, width // self.vae_scale_factor)
if isinstance(generator, list) and len(generator) != batch_size:
raise ValueError(
f"You have passed a list of generators of length {len(generator)}, but requested an effective batch"
f" size of {batch_size}. Make sure the batch size matches the length of the generators."
)
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
latents = latents.to(device)
return latents
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline._get_add_time_ids
def _get_add_time_ids(
self, original_size, crops_coords_top_left, target_size, dtype, text_encoder_projection_dim=None
):
add_time_ids = list(original_size + crops_coords_top_left + target_size)
passed_add_embed_dim = (
self.unet.config.addition_time_embed_dim * len(add_time_ids) + text_encoder_projection_dim
)
expected_add_embed_dim = self.unet.add_embedding.linear_1.in_features
if expected_add_embed_dim != passed_add_embed_dim:
raise ValueError(
f"Model expects an added time embedding vector of length {expected_add_embed_dim}, but a vector of {passed_add_embed_dim} was created. The model has an incorrect config. Please check `unet.config.time_embedding_type` and `text_encoder_2.config.projection_dim`."
)
add_time_ids = torch.tensor([add_time_ids], dtype=dtype)
return add_time_ids
# Copied from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl.StableDiffusionXLPipeline.upcast_vae
def upcast_vae(self):
dtype = self.vae.dtype
self.vae.to(dtype=torch.float32)
use_torch_2_0_or_xformers = isinstance(
self.vae.decoder.mid_block.attentions[0].processor,
(
AttnProcessor2_0,
XFormersAttnProcessor,
LoRAXFormersAttnProcessor,
LoRAAttnProcessor2_0,
FusedAttnProcessor2_0,
),
)
# if xformers or torch_2_0 is used attention block does not need
# to be in float32 which can save lots of memory
if use_torch_2_0_or_xformers:
self.vae.post_quant_conv.to(dtype)
self.vae.decoder.conv_in.to(dtype)
self.vae.decoder.mid_block.to(dtype)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.enable_freeu
def enable_freeu(self, s1: float, s2: float, b1: float, b2: float):
r"""Enables the FreeU mechanism as in https://arxiv.org/abs/2309.11497.
The suffixes after the scaling factors represent the stages where they are being applied.
Please refer to the [official repository](https://github.com/ChenyangSi/FreeU) for combinations of the values
that are known to work well for different pipelines such as Stable Diffusion v1, v2, and Stable Diffusion XL.
Args:
s1 (`float`):
Scaling factor for stage 1 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
s2 (`float`):
Scaling factor for stage 2 to attenuate the contributions of the skip features. This is done to
mitigate "oversmoothing effect" in the enhanced denoising process.
b1 (`float`): Scaling factor for stage 1 to amplify the contributions of backbone features.
b2 (`float`): Scaling factor for stage 2 to amplify the contributions of backbone features.
"""
if not hasattr(self, "unet"):
raise ValueError("The pipeline must have `unet` for using FreeU.")
self.unet.enable_freeu(s1=s1, s2=s2, b1=b1, b2=b2)
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.disable_freeu
def disable_freeu(self):
"""Disables the FreeU mechanism if enabled."""
self.unet.disable_freeu()
# Copied from diffusers.pipelines.stable_diffusion.pipeline_stable_diffusion.StableDiffusionPipeline.fuse_qkv_projections
def fuse_qkv_projections(self, unet: bool = True, vae: bool = True):
"""
Enables fused QKV projections. For self-attention modules, all projection matrices (i.e., query,
key, value) are fused. For cross-attention modules, key and value projection matrices are fused.
<Tip warning={true}>
This API is 🧪 experimental.
</Tip>
Args:
unet (`bool`, defaults to `True`): To apply fusion on the UNet.
vae (`bool`, defaults to `True`): To apply fusion on the VAE.
"""
self.fusing_unet = False
self.fusing_vae = False
if unet:
self.fusing_unet = True
self.unet.fuse_qkv_projections()
self.unet.set_attn_processor(FusedAttnProcessor2_0())
if vae:
if not isinstance(self.vae, AutoencoderKL):
raise ValueError("`fuse_qkv_projections()` is only supported for the VAE of type `AutoencoderKL`.")
self.fusing_vae = True
self.vae.fuse_qkv_projections()
self.vae.set_attn_processor(FusedAttnProcessor2_0())
def unfuse_qkv_projections(self, unet: bool = True, vae: bool = True):
"""Disable QKV projection fusion if enabled.
<Tip warning={true}>
This API is 🧪 experimental.
</Tip>
Args:
unet (`bool`, defaults to `True`): To apply fusion on the UNet.
vae (`bool`, defaults to `True`): To apply fusion on the VAE.
"""
if unet:
if not self.fusing_unet:
logger.warning("The UNet was not initially fused for QKV projections. Doing nothing.")
else:
self.unet.unfuse_qkv_projections()
self.fusing_unet = False
if vae:
if not self.fusing_vae:
logger.warning("The VAE was not initially fused for QKV projections. Doing nothing.")
else:
self.vae.unfuse_qkv_projections()
self.fusing_vae = False
@property
def guidance_scale(self):
return self._guidance_scale
@property
def clip_skip(self):
return self._clip_skip
# here `guidance_scale` is defined analog to the guidance weight `w` of equation (2)
# of the Imagen paper: https://arxiv.org/pdf/2205.11487.pdf . `guidance_scale = 1`
# corresponds to doing no classifier free guidance.
@property
def do_classifier_free_guidance(self):
return self._guidance_scale > 1 and self.unet.config.time_cond_proj_dim is None
@torch.no_grad()
@replace_example_docstring(EXAMPLE_DOC_STRING)
def __call__(
self,
prompt: Union[str, List[str]] = None,
prompt_2: Optional[Union[str, List[str]]] = None,
height: Optional[int] = None,
width: Optional[int] = None,
num_inference_steps: int = 50,
guidance_scale: float = 5.0,
negative_prompt: Optional[Union[str, List[str]]] = None,
negative_prompt_2: Optional[Union[str, List[str]]] = None,
num_images_per_prompt: Optional[int] = 1,
generator: Optional[Union[torch.Generator, List[torch.Generator]]] = None,
latents: Optional[torch.FloatTensor] = None,
prompt_embeds: Optional[torch.FloatTensor] = None,
negative_prompt_embeds: Optional[torch.FloatTensor] = None,
pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
negative_pooled_prompt_embeds: Optional[torch.FloatTensor] = None,
output_type: Optional[str] = "pil",
return_dict: bool = True,
original_size: Optional[Tuple[int, int]] = None,
crops_coords_top_left: Tuple[int, int] = (0, 0),
target_size: Optional[Tuple[int, int]] = None,
negative_original_size: Optional[Tuple[int, int]] = None,
negative_crops_coords_top_left: Tuple[int, int] = (0, 0),
negative_target_size: Optional[Tuple[int, int]] = None,
use_karras_sigmas: Optional[bool] = False,
noise_sampler_seed: Optional[int] = None,
clip_skip: Optional[int] = None,
):
r"""
Function invoked when calling the pipeline for generation.
Args:
prompt (`str` or `List[str]`, *optional*):
The prompt or prompts to guide the image generation. If not defined, one has to pass `prompt_embeds`.
instead.
prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts to be sent to the `tokenizer_2` and `text_encoder_2`. If not defined, `prompt` is
used in both text-encoders
height (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The height in pixels of the generated image. This is set to 1024 by default for the best results.
Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
width (`int`, *optional*, defaults to self.unet.config.sample_size * self.vae_scale_factor):
The width in pixels of the generated image. This is set to 1024 by default for the best results.
Anything below 512 pixels won't work well for
[stabilityai/stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0)
and checkpoints that are not specifically fine-tuned on low resolutions.
num_inference_steps (`int`, *optional*, defaults to 50):
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.
guidance_scale (`float`, *optional*, defaults to 5.0):
Guidance scale as defined in [Classifier-Free Diffusion Guidance](https://arxiv.org/abs/2207.12598).
`guidance_scale` is defined as `w` of equation 2. of [Imagen
Paper](https://arxiv.org/pdf/2205.11487.pdf). Guidance scale is enabled by setting `guidance_scale >
1`. Higher guidance scale encourages to generate images that are closely linked to the text `prompt`,
usually at the expense of lower image quality.
negative_prompt (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation. If not defined, one has to pass
`negative_prompt_embeds` instead. Ignored when not using guidance (i.e., ignored if `guidance_scale` is
less than `1`).
negative_prompt_2 (`str` or `List[str]`, *optional*):
The prompt or prompts not to guide the image generation to be sent to `tokenizer_2` and
`text_encoder_2`. If not defined, `negative_prompt` is used in both text-encoders
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
generator (`torch.Generator` or `List[torch.Generator]`, *optional*):
One or a list of [torch generator(s)](https://pytorch.org/docs/stable/generated/torch.Generator.html)
to make generation deterministic.
latents (`torch.FloatTensor`, *optional*):
Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image
generation. Can be used to tweak the same generation with different prompts. If not provided, a latents
tensor will ge generated by sampling using the supplied random `generator`.
prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting. If not
provided, text embeddings will be generated from `prompt` input argument.
negative_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, negative_prompt_embeds will be generated from `negative_prompt` input
argument.
pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt weighting.
If not provided, pooled text embeddings will be generated from `prompt` input argument.
negative_pooled_prompt_embeds (`torch.FloatTensor`, *optional*):
Pre-generated negative pooled text embeddings. Can be used to easily tweak text inputs, *e.g.* prompt
weighting. If not provided, pooled negative_prompt_embeds will be generated from `negative_prompt`
input argument.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generate image. Choose between
[PIL](https://pillow.readthedocs.io/en/stable/): `PIL.Image.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] instead
of a plain tuple.
original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
If `original_size` is not the same as `target_size` the image will appear to be down- or upsampled.
`original_size` defaults to `(height, width)` if not specified. Part of SDXL's micro-conditioning as
explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
`crops_coords_top_left` can be used to generate an image that appears to be "cropped" from the position
`crops_coords_top_left` downwards. Favorable, well-centered images are usually achieved by setting
`crops_coords_top_left` to (0, 0). Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
For most cases, `target_size` should be set to the desired height and width of the generated image. If
not specified it will default to `(height, width)`. Part of SDXL's micro-conditioning as explained in
section 2.2 of [https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952).
negative_original_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a specific image resolution. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_crops_coords_top_left (`Tuple[int]`, *optional*, defaults to (0, 0)):
To negatively condition the generation process based on a specific crop coordinates. Part of SDXL's
micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
negative_target_size (`Tuple[int]`, *optional*, defaults to (1024, 1024)):
To negatively condition the generation process based on a target image resolution. It should be as same
as the `target_size` for most cases. Part of SDXL's micro-conditioning as explained in section 2.2 of
[https://huggingface.co/papers/2307.01952](https://huggingface.co/papers/2307.01952). For more
information, refer to this issue thread: https://github.com/huggingface/diffusers/issues/4208.
Examples:
Returns:
[`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] or `tuple`:
[`~pipelines.stable_diffusion_xl.StableDiffusionXLPipelineOutput`] if `return_dict` is True, otherwise a
`tuple`. When returning a tuple, the first element is a list with the generated images.
"""
# 0. Default height and width to unet
height = height or self.default_sample_size * self.vae_scale_factor
width = width or self.default_sample_size * self.vae_scale_factor
original_size = original_size or (height, width)
target_size = target_size or (height, width)
# 1. Check inputs. Raise error if not correct
self.check_inputs(
prompt,
prompt_2,
height,
width,
negative_prompt,
negative_prompt_2,
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
)
if guidance_scale <= 1.0:
raise ValueError("has to use guidance_scale")
self._guidance_scale = guidance_scale
self._clip_skip = clip_skip
# 2. Define call parameters
if prompt is not None and isinstance(prompt, str):
batch_size = 1
elif prompt is not None and isinstance(prompt, list):
batch_size = len(prompt)
else:
batch_size = prompt_embeds.shape[0]
device = self._execution_device
# 3. Encode input prompt
lora_scale = None
(
prompt_embeds,
negative_prompt_embeds,
pooled_prompt_embeds,
negative_pooled_prompt_embeds,
) = self.encode_prompt(
prompt=prompt,
prompt_2=prompt_2,
device=device,
num_images_per_prompt=num_images_per_prompt,
do_classifier_free_guidance=self.do_classifier_free_guidance,
negative_prompt=negative_prompt,
negative_prompt_2=negative_prompt_2,
prompt_embeds=prompt_embeds,
negative_prompt_embeds=negative_prompt_embeds,
pooled_prompt_embeds=pooled_prompt_embeds,
negative_pooled_prompt_embeds=negative_pooled_prompt_embeds,
lora_scale=lora_scale,
clip_skip=self.clip_skip,
)
# 4. Prepare timesteps
self.scheduler.set_timesteps(num_inference_steps, device=prompt_embeds.device)
# 5. Prepare sigmas
if use_karras_sigmas:
sigma_min: float = self.k_diffusion_model.sigmas[0].item()
sigma_max: float = self.k_diffusion_model.sigmas[-1].item()
sigmas = get_sigmas_karras(n=num_inference_steps, sigma_min=sigma_min, sigma_max=sigma_max)
else:
sigmas = self.scheduler.sigmas
sigmas = sigmas.to(dtype=prompt_embeds.dtype, device=device)
# 6. Prepare latent variables
num_channels_latents = self.unet.config.in_channels
latents = self.prepare_latents(
batch_size * num_images_per_prompt,
num_channels_latents,
height,
width,
prompt_embeds.dtype,
device,
generator,
latents,
)
latents = latents * sigmas[0]
self.k_diffusion_model.sigmas = self.k_diffusion_model.sigmas.to(latents.device)
self.k_diffusion_model.log_sigmas = self.k_diffusion_model.log_sigmas.to(latents.device)
# 7. Prepare added time ids & embeddings
add_text_embeds = pooled_prompt_embeds
if self.text_encoder_2 is None:
text_encoder_projection_dim = int(pooled_prompt_embeds.shape[-1])
else:
text_encoder_projection_dim = self.text_encoder_2.config.projection_dim
add_time_ids = self._get_add_time_ids(
original_size,
crops_coords_top_left,
target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
if negative_original_size is not None and negative_target_size is not None:
negative_add_time_ids = self._get_add_time_ids(
negative_original_size,
negative_crops_coords_top_left,
negative_target_size,
dtype=prompt_embeds.dtype,
text_encoder_projection_dim=text_encoder_projection_dim,
)
else:
negative_add_time_ids = add_time_ids
if self.do_classifier_free_guidance:
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds], dim=0)
add_text_embeds = torch.cat([negative_pooled_prompt_embeds, add_text_embeds], dim=0)
add_time_ids = torch.cat([negative_add_time_ids, add_time_ids], dim=0)
prompt_embeds = prompt_embeds.to(device)
add_text_embeds = add_text_embeds.to(device)
add_time_ids = add_time_ids.to(device).repeat(batch_size * num_images_per_prompt, 1)
added_cond_kwargs = {"text_embeds": add_text_embeds, "time_ids": add_time_ids}
# 8. Optionally get Guidance Scale Embedding
timestep_cond = None
if self.unet.config.time_cond_proj_dim is not None:
guidance_scale_tensor = torch.tensor(self.guidance_scale - 1).repeat(batch_size * num_images_per_prompt)
timestep_cond = self.get_guidance_scale_embedding(
guidance_scale_tensor, embedding_dim=self.unet.config.time_cond_proj_dim
).to(device=device, dtype=latents.dtype)
# 9. Define model function
def model_fn(x, t):
latent_model_input = torch.cat([x] * 2)
t = torch.cat([t] * 2)
noise_pred = self.k_diffusion_model(
latent_model_input,
t,
cond=prompt_embeds,
timestep_cond=timestep_cond,
added_cond_kwargs=added_cond_kwargs,
)
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
return noise_pred
# 10. Run k-diffusion solver
sampler_kwargs = {}
if "noise_sampler" in inspect.signature(self.sampler).parameters:
min_sigma, max_sigma = sigmas[sigmas > 0].min(), sigmas.max()
noise_sampler = BrownianTreeNoiseSampler(latents, min_sigma, max_sigma, noise_sampler_seed)
sampler_kwargs["noise_sampler"] = noise_sampler
if "generator" in inspect.signature(self.sampler).parameters:
sampler_kwargs["generator"] = generator
latents = self.sampler(model_fn, latents, sigmas, **sampler_kwargs)
if not output_type == "latent":
# make sure the VAE is in float32 mode, as it overflows in float16
needs_upcasting = self.vae.dtype == torch.float16 and self.vae.config.force_upcast
if needs_upcasting:
self.upcast_vae()
latents = latents.to(next(iter(self.vae.post_quant_conv.parameters())).dtype)
image = self.vae.decode(latents / self.vae.config.scaling_factor, return_dict=False)[0]
# cast back to fp16 if needed
if needs_upcasting:
self.vae.to(dtype=torch.float16)
else:
image = latents
if not output_type == "latent":
image = self.image_processor.postprocess(image, output_type=output_type)
# Offload all models
self.maybe_free_model_hooks()
if not return_dict:
return (image,)
return StableDiffusionXLPipelineOutput(images=image)
| diffusers/src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_xl_k_diffusion.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/stable_diffusion_k_diffusion/pipeline_stable_diffusion_xl_k_diffusion.py",
"repo_id": "diffusers",
"token_count": 22378
} | 134 |
# Copyright 2023 Kakao Brain and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import inspect
from typing import List, Optional, Union
import PIL.Image
import torch
from torch.nn import functional as F
from transformers import (
CLIPImageProcessor,
CLIPTextModelWithProjection,
CLIPTokenizer,
CLIPVisionModelWithProjection,
)
from ...models import UNet2DConditionModel, UNet2DModel
from ...schedulers import UnCLIPScheduler
from ...utils import logging
from ...utils.torch_utils import randn_tensor
from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
from .text_proj import UnCLIPTextProjModel
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
class UnCLIPImageVariationPipeline(DiffusionPipeline):
"""
Pipeline to generate image variations from an input image using UnCLIP.
This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.).
Args:
text_encoder ([`~transformers.CLIPTextModelWithProjection`]):
Frozen text-encoder.
tokenizer ([`~transformers.CLIPTokenizer`]):
A `CLIPTokenizer` to tokenize text.
feature_extractor ([`~transformers.CLIPImageProcessor`]):
Model that extracts features from generated images to be used as inputs for the `image_encoder`.
image_encoder ([`~transformers.CLIPVisionModelWithProjection`]):
Frozen CLIP image-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
text_proj ([`UnCLIPTextProjModel`]):
Utility class to prepare and combine the embeddings before they are passed to the decoder.
decoder ([`UNet2DConditionModel`]):
The decoder to invert the image embedding into an image.
super_res_first ([`UNet2DModel`]):
Super resolution UNet. Used in all but the last step of the super resolution diffusion process.
super_res_last ([`UNet2DModel`]):
Super resolution UNet. Used in the last step of the super resolution diffusion process.
decoder_scheduler ([`UnCLIPScheduler`]):
Scheduler used in the decoder denoising process (a modified [`DDPMScheduler`]).
super_res_scheduler ([`UnCLIPScheduler`]):
Scheduler used in the super resolution denoising process (a modified [`DDPMScheduler`]).
"""
decoder: UNet2DConditionModel
text_proj: UnCLIPTextProjModel
text_encoder: CLIPTextModelWithProjection
tokenizer: CLIPTokenizer
feature_extractor: CLIPImageProcessor
image_encoder: CLIPVisionModelWithProjection
super_res_first: UNet2DModel
super_res_last: UNet2DModel
decoder_scheduler: UnCLIPScheduler
super_res_scheduler: UnCLIPScheduler
model_cpu_offload_seq = "text_encoder->image_encoder->text_proj->decoder->super_res_first->super_res_last"
def __init__(
self,
decoder: UNet2DConditionModel,
text_encoder: CLIPTextModelWithProjection,
tokenizer: CLIPTokenizer,
text_proj: UnCLIPTextProjModel,
feature_extractor: CLIPImageProcessor,
image_encoder: CLIPVisionModelWithProjection,
super_res_first: UNet2DModel,
super_res_last: UNet2DModel,
decoder_scheduler: UnCLIPScheduler,
super_res_scheduler: UnCLIPScheduler,
):
super().__init__()
self.register_modules(
decoder=decoder,
text_encoder=text_encoder,
tokenizer=tokenizer,
text_proj=text_proj,
feature_extractor=feature_extractor,
image_encoder=image_encoder,
super_res_first=super_res_first,
super_res_last=super_res_last,
decoder_scheduler=decoder_scheduler,
super_res_scheduler=super_res_scheduler,
)
# Copied from diffusers.pipelines.unclip.pipeline_unclip.UnCLIPPipeline.prepare_latents
def prepare_latents(self, shape, dtype, device, generator, latents, scheduler):
if latents is None:
latents = randn_tensor(shape, generator=generator, device=device, dtype=dtype)
else:
if latents.shape != shape:
raise ValueError(f"Unexpected latents shape, got {latents.shape}, expected {shape}")
latents = latents.to(device)
latents = latents * scheduler.init_noise_sigma
return latents
def _encode_prompt(self, prompt, device, num_images_per_prompt, do_classifier_free_guidance):
batch_size = len(prompt) if isinstance(prompt, list) else 1
# get prompt text embeddings
text_inputs = self.tokenizer(
prompt,
padding="max_length",
max_length=self.tokenizer.model_max_length,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
text_mask = text_inputs.attention_mask.bool().to(device)
text_encoder_output = self.text_encoder(text_input_ids.to(device))
prompt_embeds = text_encoder_output.text_embeds
text_encoder_hidden_states = text_encoder_output.last_hidden_state
prompt_embeds = prompt_embeds.repeat_interleave(num_images_per_prompt, dim=0)
text_encoder_hidden_states = text_encoder_hidden_states.repeat_interleave(num_images_per_prompt, dim=0)
text_mask = text_mask.repeat_interleave(num_images_per_prompt, dim=0)
if do_classifier_free_guidance:
uncond_tokens = [""] * batch_size
max_length = text_input_ids.shape[-1]
uncond_input = self.tokenizer(
uncond_tokens,
padding="max_length",
max_length=max_length,
truncation=True,
return_tensors="pt",
)
uncond_text_mask = uncond_input.attention_mask.bool().to(device)
negative_prompt_embeds_text_encoder_output = self.text_encoder(uncond_input.input_ids.to(device))
negative_prompt_embeds = negative_prompt_embeds_text_encoder_output.text_embeds
uncond_text_encoder_hidden_states = negative_prompt_embeds_text_encoder_output.last_hidden_state
# duplicate unconditional embeddings for each generation per prompt, using mps friendly method
seq_len = negative_prompt_embeds.shape[1]
negative_prompt_embeds = negative_prompt_embeds.repeat(1, num_images_per_prompt)
negative_prompt_embeds = negative_prompt_embeds.view(batch_size * num_images_per_prompt, seq_len)
seq_len = uncond_text_encoder_hidden_states.shape[1]
uncond_text_encoder_hidden_states = uncond_text_encoder_hidden_states.repeat(1, num_images_per_prompt, 1)
uncond_text_encoder_hidden_states = uncond_text_encoder_hidden_states.view(
batch_size * num_images_per_prompt, seq_len, -1
)
uncond_text_mask = uncond_text_mask.repeat_interleave(num_images_per_prompt, dim=0)
# done duplicates
# For classifier free guidance, we need to do two forward passes.
# Here we concatenate the unconditional and text embeddings into a single batch
# to avoid doing two forward passes
prompt_embeds = torch.cat([negative_prompt_embeds, prompt_embeds])
text_encoder_hidden_states = torch.cat([uncond_text_encoder_hidden_states, text_encoder_hidden_states])
text_mask = torch.cat([uncond_text_mask, text_mask])
return prompt_embeds, text_encoder_hidden_states, text_mask
def _encode_image(self, image, device, num_images_per_prompt, image_embeddings: Optional[torch.Tensor] = None):
dtype = next(self.image_encoder.parameters()).dtype
if image_embeddings is None:
if not isinstance(image, torch.Tensor):
image = self.feature_extractor(images=image, return_tensors="pt").pixel_values
image = image.to(device=device, dtype=dtype)
image_embeddings = self.image_encoder(image).image_embeds
image_embeddings = image_embeddings.repeat_interleave(num_images_per_prompt, dim=0)
return image_embeddings
@torch.no_grad()
def __call__(
self,
image: Optional[Union[PIL.Image.Image, List[PIL.Image.Image], torch.FloatTensor]] = None,
num_images_per_prompt: int = 1,
decoder_num_inference_steps: int = 25,
super_res_num_inference_steps: int = 7,
generator: Optional[torch.Generator] = None,
decoder_latents: Optional[torch.FloatTensor] = None,
super_res_latents: Optional[torch.FloatTensor] = None,
image_embeddings: Optional[torch.Tensor] = None,
decoder_guidance_scale: float = 8.0,
output_type: Optional[str] = "pil",
return_dict: bool = True,
):
"""
The call function to the pipeline for generation.
Args:
image (`PIL.Image.Image` or `List[PIL.Image.Image]` or `torch.FloatTensor`):
`Image` or tensor representing an image batch to be used as the starting point. If you provide a
tensor, it needs to be compatible with the [`CLIPImageProcessor`]
[configuration](https://huggingface.co/fusing/karlo-image-variations-diffusers/blob/main/feature_extractor/preprocessor_config.json).
Can be left as `None` only when `image_embeddings` are passed.
num_images_per_prompt (`int`, *optional*, defaults to 1):
The number of images to generate per prompt.
decoder_num_inference_steps (`int`, *optional*, defaults to 25):
The number of denoising steps for the decoder. More denoising steps usually lead to a higher quality
image at the expense of slower inference.
super_res_num_inference_steps (`int`, *optional*, defaults to 7):
The number of denoising steps for super resolution. More denoising steps usually lead to a higher
quality image at the expense of slower inference.
generator (`torch.Generator`, *optional*):
A [`torch.Generator`](https://pytorch.org/docs/stable/generated/torch.Generator.html) to make
generation deterministic.
decoder_latents (`torch.FloatTensor` of shape (batch size, channels, height, width), *optional*):
Pre-generated noisy latents to be used as inputs for the decoder.
super_res_latents (`torch.FloatTensor` of shape (batch size, channels, super res height, super res width), *optional*):
Pre-generated noisy latents to be used as inputs for the decoder.
decoder_guidance_scale (`float`, *optional*, defaults to 4.0):
A higher guidance scale value encourages the model to generate images closely linked to the text
`prompt` at the expense of lower image quality. Guidance scale is enabled when `guidance_scale > 1`.
image_embeddings (`torch.Tensor`, *optional*):
Pre-defined image embeddings that can be derived from the image encoder. Pre-defined image embeddings
can be passed for tasks like image interpolations. `image` can be left as `None`.
output_type (`str`, *optional*, defaults to `"pil"`):
The output format of the generated image. Choose between `PIL.Image` or `np.array`.
return_dict (`bool`, *optional*, defaults to `True`):
Whether or not to return a [`~pipelines.ImagePipelineOutput`] instead of a plain tuple.
Returns:
[`~pipelines.ImagePipelineOutput`] or `tuple`:
If `return_dict` is `True`, [`~pipelines.ImagePipelineOutput`] is returned, otherwise a `tuple` is
returned where the first element is a list with the generated images.
"""
if image is not None:
if isinstance(image, PIL.Image.Image):
batch_size = 1
elif isinstance(image, list):
batch_size = len(image)
else:
batch_size = image.shape[0]
else:
batch_size = image_embeddings.shape[0]
prompt = [""] * batch_size
device = self._execution_device
batch_size = batch_size * num_images_per_prompt
do_classifier_free_guidance = decoder_guidance_scale > 1.0
prompt_embeds, text_encoder_hidden_states, text_mask = self._encode_prompt(
prompt, device, num_images_per_prompt, do_classifier_free_guidance
)
image_embeddings = self._encode_image(image, device, num_images_per_prompt, image_embeddings)
# decoder
text_encoder_hidden_states, additive_clip_time_embeddings = self.text_proj(
image_embeddings=image_embeddings,
prompt_embeds=prompt_embeds,
text_encoder_hidden_states=text_encoder_hidden_states,
do_classifier_free_guidance=do_classifier_free_guidance,
)
if device.type == "mps":
# HACK: MPS: There is a panic when padding bool tensors,
# so cast to int tensor for the pad and back to bool afterwards
text_mask = text_mask.type(torch.int)
decoder_text_mask = F.pad(text_mask, (self.text_proj.clip_extra_context_tokens, 0), value=1)
decoder_text_mask = decoder_text_mask.type(torch.bool)
else:
decoder_text_mask = F.pad(text_mask, (self.text_proj.clip_extra_context_tokens, 0), value=True)
self.decoder_scheduler.set_timesteps(decoder_num_inference_steps, device=device)
decoder_timesteps_tensor = self.decoder_scheduler.timesteps
num_channels_latents = self.decoder.config.in_channels
height = self.decoder.config.sample_size
width = self.decoder.config.sample_size
if decoder_latents is None:
decoder_latents = self.prepare_latents(
(batch_size, num_channels_latents, height, width),
text_encoder_hidden_states.dtype,
device,
generator,
decoder_latents,
self.decoder_scheduler,
)
for i, t in enumerate(self.progress_bar(decoder_timesteps_tensor)):
# expand the latents if we are doing classifier free guidance
latent_model_input = torch.cat([decoder_latents] * 2) if do_classifier_free_guidance else decoder_latents
noise_pred = self.decoder(
sample=latent_model_input,
timestep=t,
encoder_hidden_states=text_encoder_hidden_states,
class_labels=additive_clip_time_embeddings,
attention_mask=decoder_text_mask,
).sample
if do_classifier_free_guidance:
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred_uncond, _ = noise_pred_uncond.split(latent_model_input.shape[1], dim=1)
noise_pred_text, predicted_variance = noise_pred_text.split(latent_model_input.shape[1], dim=1)
noise_pred = noise_pred_uncond + decoder_guidance_scale * (noise_pred_text - noise_pred_uncond)
noise_pred = torch.cat([noise_pred, predicted_variance], dim=1)
if i + 1 == decoder_timesteps_tensor.shape[0]:
prev_timestep = None
else:
prev_timestep = decoder_timesteps_tensor[i + 1]
# compute the previous noisy sample x_t -> x_t-1
decoder_latents = self.decoder_scheduler.step(
noise_pred, t, decoder_latents, prev_timestep=prev_timestep, generator=generator
).prev_sample
decoder_latents = decoder_latents.clamp(-1, 1)
image_small = decoder_latents
# done decoder
# super res
self.super_res_scheduler.set_timesteps(super_res_num_inference_steps, device=device)
super_res_timesteps_tensor = self.super_res_scheduler.timesteps
channels = self.super_res_first.config.in_channels // 2
height = self.super_res_first.config.sample_size
width = self.super_res_first.config.sample_size
if super_res_latents is None:
super_res_latents = self.prepare_latents(
(batch_size, channels, height, width),
image_small.dtype,
device,
generator,
super_res_latents,
self.super_res_scheduler,
)
if device.type == "mps":
# MPS does not support many interpolations
image_upscaled = F.interpolate(image_small, size=[height, width])
else:
interpolate_antialias = {}
if "antialias" in inspect.signature(F.interpolate).parameters:
interpolate_antialias["antialias"] = True
image_upscaled = F.interpolate(
image_small, size=[height, width], mode="bicubic", align_corners=False, **interpolate_antialias
)
for i, t in enumerate(self.progress_bar(super_res_timesteps_tensor)):
# no classifier free guidance
if i == super_res_timesteps_tensor.shape[0] - 1:
unet = self.super_res_last
else:
unet = self.super_res_first
latent_model_input = torch.cat([super_res_latents, image_upscaled], dim=1)
noise_pred = unet(
sample=latent_model_input,
timestep=t,
).sample
if i + 1 == super_res_timesteps_tensor.shape[0]:
prev_timestep = None
else:
prev_timestep = super_res_timesteps_tensor[i + 1]
# compute the previous noisy sample x_t -> x_t-1
super_res_latents = self.super_res_scheduler.step(
noise_pred, t, super_res_latents, prev_timestep=prev_timestep, generator=generator
).prev_sample
image = super_res_latents
# done super res
self.maybe_free_model_hooks()
# post processing
image = image * 0.5 + 0.5
image = image.clamp(0, 1)
image = image.cpu().permute(0, 2, 3, 1).float().numpy()
if output_type == "pil":
image = self.numpy_to_pil(image)
if not return_dict:
return (image,)
return ImagePipelineOutput(images=image)
| diffusers/src/diffusers/pipelines/unclip/pipeline_unclip_image_variation.py/0 | {
"file_path": "diffusers/src/diffusers/pipelines/unclip/pipeline_unclip_image_variation.py",
"repo_id": "diffusers",
"token_count": 8370
} | 135 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING
from ..utils import (
DIFFUSERS_SLOW_IMPORT,
OptionalDependencyNotAvailable,
_LazyModule,
get_objects_from_module,
is_flax_available,
is_scipy_available,
is_torch_available,
is_torchsde_available,
)
_dummy_modules = {}
_import_structure = {}
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_pt_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_pt_objects))
else:
_import_structure["deprecated"] = ["KarrasVeScheduler", "ScoreSdeVpScheduler"]
_import_structure["scheduling_amused"] = ["AmusedScheduler"]
_import_structure["scheduling_consistency_decoder"] = ["ConsistencyDecoderScheduler"]
_import_structure["scheduling_consistency_models"] = ["CMStochasticIterativeScheduler"]
_import_structure["scheduling_ddim"] = ["DDIMScheduler"]
_import_structure["scheduling_ddim_inverse"] = ["DDIMInverseScheduler"]
_import_structure["scheduling_ddim_parallel"] = ["DDIMParallelScheduler"]
_import_structure["scheduling_ddpm"] = ["DDPMScheduler"]
_import_structure["scheduling_ddpm_parallel"] = ["DDPMParallelScheduler"]
_import_structure["scheduling_ddpm_wuerstchen"] = ["DDPMWuerstchenScheduler"]
_import_structure["scheduling_deis_multistep"] = ["DEISMultistepScheduler"]
_import_structure["scheduling_dpmsolver_multistep"] = ["DPMSolverMultistepScheduler"]
_import_structure["scheduling_dpmsolver_multistep_inverse"] = ["DPMSolverMultistepInverseScheduler"]
_import_structure["scheduling_dpmsolver_singlestep"] = ["DPMSolverSinglestepScheduler"]
_import_structure["scheduling_euler_ancestral_discrete"] = ["EulerAncestralDiscreteScheduler"]
_import_structure["scheduling_euler_discrete"] = ["EulerDiscreteScheduler"]
_import_structure["scheduling_heun_discrete"] = ["HeunDiscreteScheduler"]
_import_structure["scheduling_ipndm"] = ["IPNDMScheduler"]
_import_structure["scheduling_k_dpm_2_ancestral_discrete"] = ["KDPM2AncestralDiscreteScheduler"]
_import_structure["scheduling_k_dpm_2_discrete"] = ["KDPM2DiscreteScheduler"]
_import_structure["scheduling_lcm"] = ["LCMScheduler"]
_import_structure["scheduling_pndm"] = ["PNDMScheduler"]
_import_structure["scheduling_repaint"] = ["RePaintScheduler"]
_import_structure["scheduling_sasolver"] = ["SASolverScheduler"]
_import_structure["scheduling_sde_ve"] = ["ScoreSdeVeScheduler"]
_import_structure["scheduling_unclip"] = ["UnCLIPScheduler"]
_import_structure["scheduling_unipc_multistep"] = ["UniPCMultistepScheduler"]
_import_structure["scheduling_utils"] = ["KarrasDiffusionSchedulers", "SchedulerMixin"]
_import_structure["scheduling_vq_diffusion"] = ["VQDiffusionScheduler"]
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_flax_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_flax_objects))
else:
_import_structure["scheduling_ddim_flax"] = ["FlaxDDIMScheduler"]
_import_structure["scheduling_ddpm_flax"] = ["FlaxDDPMScheduler"]
_import_structure["scheduling_dpmsolver_multistep_flax"] = ["FlaxDPMSolverMultistepScheduler"]
_import_structure["scheduling_euler_discrete_flax"] = ["FlaxEulerDiscreteScheduler"]
_import_structure["scheduling_karras_ve_flax"] = ["FlaxKarrasVeScheduler"]
_import_structure["scheduling_lms_discrete_flax"] = ["FlaxLMSDiscreteScheduler"]
_import_structure["scheduling_pndm_flax"] = ["FlaxPNDMScheduler"]
_import_structure["scheduling_sde_ve_flax"] = ["FlaxScoreSdeVeScheduler"]
_import_structure["scheduling_utils_flax"] = [
"FlaxKarrasDiffusionSchedulers",
"FlaxSchedulerMixin",
"FlaxSchedulerOutput",
"broadcast_to_shape_from_left",
]
try:
if not (is_torch_available() and is_scipy_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_torch_and_scipy_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_torch_and_scipy_objects))
else:
_import_structure["scheduling_lms_discrete"] = ["LMSDiscreteScheduler"]
try:
if not (is_torch_available() and is_torchsde_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils import dummy_torch_and_torchsde_objects # noqa F403
_dummy_modules.update(get_objects_from_module(dummy_torch_and_torchsde_objects))
else:
_import_structure["scheduling_dpmsolver_sde"] = ["DPMSolverSDEScheduler"]
if TYPE_CHECKING or DIFFUSERS_SLOW_IMPORT:
from ..utils import (
OptionalDependencyNotAvailable,
is_flax_available,
is_scipy_available,
is_torch_available,
is_torchsde_available,
)
try:
if not is_torch_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_pt_objects import * # noqa F403
else:
from .deprecated import KarrasVeScheduler, ScoreSdeVpScheduler
from .scheduling_amused import AmusedScheduler
from .scheduling_consistency_decoder import ConsistencyDecoderScheduler
from .scheduling_consistency_models import CMStochasticIterativeScheduler
from .scheduling_ddim import DDIMScheduler
from .scheduling_ddim_inverse import DDIMInverseScheduler
from .scheduling_ddim_parallel import DDIMParallelScheduler
from .scheduling_ddpm import DDPMScheduler
from .scheduling_ddpm_parallel import DDPMParallelScheduler
from .scheduling_ddpm_wuerstchen import DDPMWuerstchenScheduler
from .scheduling_deis_multistep import DEISMultistepScheduler
from .scheduling_dpmsolver_multistep import DPMSolverMultistepScheduler
from .scheduling_dpmsolver_multistep_inverse import DPMSolverMultistepInverseScheduler
from .scheduling_dpmsolver_singlestep import DPMSolverSinglestepScheduler
from .scheduling_euler_ancestral_discrete import EulerAncestralDiscreteScheduler
from .scheduling_euler_discrete import EulerDiscreteScheduler
from .scheduling_heun_discrete import HeunDiscreteScheduler
from .scheduling_ipndm import IPNDMScheduler
from .scheduling_k_dpm_2_ancestral_discrete import KDPM2AncestralDiscreteScheduler
from .scheduling_k_dpm_2_discrete import KDPM2DiscreteScheduler
from .scheduling_lcm import LCMScheduler
from .scheduling_pndm import PNDMScheduler
from .scheduling_repaint import RePaintScheduler
from .scheduling_sasolver import SASolverScheduler
from .scheduling_sde_ve import ScoreSdeVeScheduler
from .scheduling_unclip import UnCLIPScheduler
from .scheduling_unipc_multistep import UniPCMultistepScheduler
from .scheduling_utils import KarrasDiffusionSchedulers, SchedulerMixin
from .scheduling_vq_diffusion import VQDiffusionScheduler
try:
if not is_flax_available():
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_flax_objects import * # noqa F403
else:
from .scheduling_ddim_flax import FlaxDDIMScheduler
from .scheduling_ddpm_flax import FlaxDDPMScheduler
from .scheduling_dpmsolver_multistep_flax import FlaxDPMSolverMultistepScheduler
from .scheduling_euler_discrete_flax import FlaxEulerDiscreteScheduler
from .scheduling_karras_ve_flax import FlaxKarrasVeScheduler
from .scheduling_lms_discrete_flax import FlaxLMSDiscreteScheduler
from .scheduling_pndm_flax import FlaxPNDMScheduler
from .scheduling_sde_ve_flax import FlaxScoreSdeVeScheduler
from .scheduling_utils_flax import (
FlaxKarrasDiffusionSchedulers,
FlaxSchedulerMixin,
FlaxSchedulerOutput,
broadcast_to_shape_from_left,
)
try:
if not (is_torch_available() and is_scipy_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_torch_and_scipy_objects import * # noqa F403
else:
from .scheduling_lms_discrete import LMSDiscreteScheduler
try:
if not (is_torch_available() and is_torchsde_available()):
raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
from ..utils.dummy_torch_and_torchsde_objects import * # noqa F403
else:
from .scheduling_dpmsolver_sde import DPMSolverSDEScheduler
else:
import sys
sys.modules[__name__] = _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
for name, value in _dummy_modules.items():
setattr(sys.modules[__name__], name, value)
| diffusers/src/diffusers/schedulers/__init__.py/0 | {
"file_path": "diffusers/src/diffusers/schedulers/__init__.py",
"repo_id": "diffusers",
"token_count": 3837
} | 136 |
# Copyright 2023 Zhejiang University Team and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# DISCLAIMER: This file is strongly influenced by https://github.com/ermongroup/ddim
import math
from typing import List, Optional, Tuple, Union
import numpy as np
import torch
from ..configuration_utils import ConfigMixin, register_to_config
from .scheduling_utils import KarrasDiffusionSchedulers, SchedulerMixin, SchedulerOutput
# Copied from diffusers.schedulers.scheduling_ddpm.betas_for_alpha_bar
def betas_for_alpha_bar(
num_diffusion_timesteps,
max_beta=0.999,
alpha_transform_type="cosine",
):
"""
Create a beta schedule that discretizes the given alpha_t_bar function, which defines the cumulative product of
(1-beta) over time from t = [0,1].
Contains a function alpha_bar that takes an argument t and transforms it to the cumulative product of (1-beta) up
to that part of the diffusion process.
Args:
num_diffusion_timesteps (`int`): the number of betas to produce.
max_beta (`float`): the maximum beta to use; use values lower than 1 to
prevent singularities.
alpha_transform_type (`str`, *optional*, default to `cosine`): the type of noise schedule for alpha_bar.
Choose from `cosine` or `exp`
Returns:
betas (`np.ndarray`): the betas used by the scheduler to step the model outputs
"""
if alpha_transform_type == "cosine":
def alpha_bar_fn(t):
return math.cos((t + 0.008) / 1.008 * math.pi / 2) ** 2
elif alpha_transform_type == "exp":
def alpha_bar_fn(t):
return math.exp(t * -12.0)
else:
raise ValueError(f"Unsupported alpha_tranform_type: {alpha_transform_type}")
betas = []
for i in range(num_diffusion_timesteps):
t1 = i / num_diffusion_timesteps
t2 = (i + 1) / num_diffusion_timesteps
betas.append(min(1 - alpha_bar_fn(t2) / alpha_bar_fn(t1), max_beta))
return torch.tensor(betas, dtype=torch.float32)
class PNDMScheduler(SchedulerMixin, ConfigMixin):
"""
`PNDMScheduler` uses pseudo numerical methods for diffusion models such as the Runge-Kutta and linear multi-step
method.
This model inherits from [`SchedulerMixin`] and [`ConfigMixin`]. Check the superclass documentation for the generic
methods the library implements for all schedulers such as loading and saving.
Args:
num_train_timesteps (`int`, defaults to 1000):
The number of diffusion steps to train the model.
beta_start (`float`, defaults to 0.0001):
The starting `beta` value of inference.
beta_end (`float`, defaults to 0.02):
The final `beta` value.
beta_schedule (`str`, defaults to `"linear"`):
The beta schedule, a mapping from a beta range to a sequence of betas for stepping the model. Choose from
`linear`, `scaled_linear`, or `squaredcos_cap_v2`.
trained_betas (`np.ndarray`, *optional*):
Pass an array of betas directly to the constructor to bypass `beta_start` and `beta_end`.
skip_prk_steps (`bool`, defaults to `False`):
Allows the scheduler to skip the Runge-Kutta steps defined in the original paper as being required before
PLMS steps.
set_alpha_to_one (`bool`, defaults to `False`):
Each diffusion step uses the alphas product value at that step and at the previous one. For the final step
there is no previous alpha. When this option is `True` the previous alpha product is fixed to `1`,
otherwise it uses the alpha value at step 0.
prediction_type (`str`, defaults to `epsilon`, *optional*):
Prediction type of the scheduler function; can be `epsilon` (predicts the noise of the diffusion process)
or `v_prediction` (see section 2.4 of [Imagen Video](https://imagen.research.google/video/paper.pdf)
paper).
timestep_spacing (`str`, defaults to `"leading"`):
The way the timesteps should be scaled. Refer to Table 2 of the [Common Diffusion Noise Schedules and
Sample Steps are Flawed](https://huggingface.co/papers/2305.08891) for more information.
steps_offset (`int`, defaults to 0):
An offset added to the inference steps. You can use a combination of `offset=1` and
`set_alpha_to_one=False` to make the last step use step 0 for the previous alpha product like in Stable
Diffusion.
"""
_compatibles = [e.name for e in KarrasDiffusionSchedulers]
order = 1
@register_to_config
def __init__(
self,
num_train_timesteps: int = 1000,
beta_start: float = 0.0001,
beta_end: float = 0.02,
beta_schedule: str = "linear",
trained_betas: Optional[Union[np.ndarray, List[float]]] = None,
skip_prk_steps: bool = False,
set_alpha_to_one: bool = False,
prediction_type: str = "epsilon",
timestep_spacing: str = "leading",
steps_offset: int = 0,
):
if trained_betas is not None:
self.betas = torch.tensor(trained_betas, dtype=torch.float32)
elif beta_schedule == "linear":
self.betas = torch.linspace(beta_start, beta_end, num_train_timesteps, dtype=torch.float32)
elif beta_schedule == "scaled_linear":
# this schedule is very specific to the latent diffusion model.
self.betas = torch.linspace(beta_start**0.5, beta_end**0.5, num_train_timesteps, dtype=torch.float32) ** 2
elif beta_schedule == "squaredcos_cap_v2":
# Glide cosine schedule
self.betas = betas_for_alpha_bar(num_train_timesteps)
else:
raise NotImplementedError(f"{beta_schedule} does is not implemented for {self.__class__}")
self.alphas = 1.0 - self.betas
self.alphas_cumprod = torch.cumprod(self.alphas, dim=0)
self.final_alpha_cumprod = torch.tensor(1.0) if set_alpha_to_one else self.alphas_cumprod[0]
# standard deviation of the initial noise distribution
self.init_noise_sigma = 1.0
# For now we only support F-PNDM, i.e. the runge-kutta method
# For more information on the algorithm please take a look at the paper: https://arxiv.org/pdf/2202.09778.pdf
# mainly at formula (9), (12), (13) and the Algorithm 2.
self.pndm_order = 4
# running values
self.cur_model_output = 0
self.counter = 0
self.cur_sample = None
self.ets = []
# setable values
self.num_inference_steps = None
self._timesteps = np.arange(0, num_train_timesteps)[::-1].copy()
self.prk_timesteps = None
self.plms_timesteps = None
self.timesteps = None
def set_timesteps(self, num_inference_steps: int, device: Union[str, torch.device] = None):
"""
Sets the discrete timesteps used for the diffusion chain (to be run before inference).
Args:
num_inference_steps (`int`):
The number of diffusion steps used when generating samples with a pre-trained model.
device (`str` or `torch.device`, *optional*):
The device to which the timesteps should be moved to. If `None`, the timesteps are not moved.
"""
self.num_inference_steps = num_inference_steps
# "linspace", "leading", "trailing" corresponds to annotation of Table 2. of https://arxiv.org/abs/2305.08891
if self.config.timestep_spacing == "linspace":
self._timesteps = (
np.linspace(0, self.config.num_train_timesteps - 1, num_inference_steps).round().astype(np.int64)
)
elif self.config.timestep_spacing == "leading":
step_ratio = self.config.num_train_timesteps // self.num_inference_steps
# creates integer timesteps by multiplying by ratio
# casting to int to avoid issues when num_inference_step is power of 3
self._timesteps = (np.arange(0, num_inference_steps) * step_ratio).round()
self._timesteps += self.config.steps_offset
elif self.config.timestep_spacing == "trailing":
step_ratio = self.config.num_train_timesteps / self.num_inference_steps
# creates integer timesteps by multiplying by ratio
# casting to int to avoid issues when num_inference_step is power of 3
self._timesteps = np.round(np.arange(self.config.num_train_timesteps, 0, -step_ratio))[::-1].astype(
np.int64
)
self._timesteps -= 1
else:
raise ValueError(
f"{self.config.timestep_spacing} is not supported. Please make sure to choose one of 'linspace', 'leading' or 'trailing'."
)
if self.config.skip_prk_steps:
# for some models like stable diffusion the prk steps can/should be skipped to
# produce better results. When using PNDM with `self.config.skip_prk_steps` the implementation
# is based on crowsonkb's PLMS sampler implementation: https://github.com/CompVis/latent-diffusion/pull/51
self.prk_timesteps = np.array([])
self.plms_timesteps = np.concatenate([self._timesteps[:-1], self._timesteps[-2:-1], self._timesteps[-1:]])[
::-1
].copy()
else:
prk_timesteps = np.array(self._timesteps[-self.pndm_order :]).repeat(2) + np.tile(
np.array([0, self.config.num_train_timesteps // num_inference_steps // 2]), self.pndm_order
)
self.prk_timesteps = (prk_timesteps[:-1].repeat(2)[1:-1])[::-1].copy()
self.plms_timesteps = self._timesteps[:-3][
::-1
].copy() # we copy to avoid having negative strides which are not supported by torch.from_numpy
timesteps = np.concatenate([self.prk_timesteps, self.plms_timesteps]).astype(np.int64)
self.timesteps = torch.from_numpy(timesteps).to(device)
self.ets = []
self.counter = 0
self.cur_model_output = 0
def step(
self,
model_output: torch.FloatTensor,
timestep: int,
sample: torch.FloatTensor,
return_dict: bool = True,
) -> Union[SchedulerOutput, Tuple]:
"""
Predict the sample from the previous timestep by reversing the SDE. This function propagates the diffusion
process from the learned model outputs (most often the predicted noise), and calls [`~PNDMScheduler.step_prk`]
or [`~PNDMScheduler.step_plms`] depending on the internal variable `counter`.
Args:
model_output (`torch.FloatTensor`):
The direct output from learned diffusion model.
timestep (`int`):
The current discrete timestep in the diffusion chain.
sample (`torch.FloatTensor`):
A current instance of a sample created by the diffusion process.
return_dict (`bool`):
Whether or not to return a [`~schedulers.scheduling_utils.SchedulerOutput`] or `tuple`.
Returns:
[`~schedulers.scheduling_utils.SchedulerOutput`] or `tuple`:
If return_dict is `True`, [`~schedulers.scheduling_utils.SchedulerOutput`] is returned, otherwise a
tuple is returned where the first element is the sample tensor.
"""
if self.counter < len(self.prk_timesteps) and not self.config.skip_prk_steps:
return self.step_prk(model_output=model_output, timestep=timestep, sample=sample, return_dict=return_dict)
else:
return self.step_plms(model_output=model_output, timestep=timestep, sample=sample, return_dict=return_dict)
def step_prk(
self,
model_output: torch.FloatTensor,
timestep: int,
sample: torch.FloatTensor,
return_dict: bool = True,
) -> Union[SchedulerOutput, Tuple]:
"""
Predict the sample from the previous timestep by reversing the SDE. This function propagates the sample with
the Runge-Kutta method. It performs four forward passes to approximate the solution to the differential
equation.
Args:
model_output (`torch.FloatTensor`):
The direct output from learned diffusion model.
timestep (`int`):
The current discrete timestep in the diffusion chain.
sample (`torch.FloatTensor`):
A current instance of a sample created by the diffusion process.
return_dict (`bool`):
Whether or not to return a [`~schedulers.scheduling_utils.SchedulerOutput`] or tuple.
Returns:
[`~schedulers.scheduling_utils.SchedulerOutput`] or `tuple`:
If return_dict is `True`, [`~schedulers.scheduling_utils.SchedulerOutput`] is returned, otherwise a
tuple is returned where the first element is the sample tensor.
"""
if self.num_inference_steps is None:
raise ValueError(
"Number of inference steps is 'None', you need to run 'set_timesteps' after creating the scheduler"
)
diff_to_prev = 0 if self.counter % 2 else self.config.num_train_timesteps // self.num_inference_steps // 2
prev_timestep = timestep - diff_to_prev
timestep = self.prk_timesteps[self.counter // 4 * 4]
if self.counter % 4 == 0:
self.cur_model_output += 1 / 6 * model_output
self.ets.append(model_output)
self.cur_sample = sample
elif (self.counter - 1) % 4 == 0:
self.cur_model_output += 1 / 3 * model_output
elif (self.counter - 2) % 4 == 0:
self.cur_model_output += 1 / 3 * model_output
elif (self.counter - 3) % 4 == 0:
model_output = self.cur_model_output + 1 / 6 * model_output
self.cur_model_output = 0
# cur_sample should not be `None`
cur_sample = self.cur_sample if self.cur_sample is not None else sample
prev_sample = self._get_prev_sample(cur_sample, timestep, prev_timestep, model_output)
self.counter += 1
if not return_dict:
return (prev_sample,)
return SchedulerOutput(prev_sample=prev_sample)
def step_plms(
self,
model_output: torch.FloatTensor,
timestep: int,
sample: torch.FloatTensor,
return_dict: bool = True,
) -> Union[SchedulerOutput, Tuple]:
"""
Predict the sample from the previous timestep by reversing the SDE. This function propagates the sample with
the linear multistep method. It performs one forward pass multiple times to approximate the solution.
Args:
model_output (`torch.FloatTensor`):
The direct output from learned diffusion model.
timestep (`int`):
The current discrete timestep in the diffusion chain.
sample (`torch.FloatTensor`):
A current instance of a sample created by the diffusion process.
return_dict (`bool`):
Whether or not to return a [`~schedulers.scheduling_utils.SchedulerOutput`] or tuple.
Returns:
[`~schedulers.scheduling_utils.SchedulerOutput`] or `tuple`:
If return_dict is `True`, [`~schedulers.scheduling_utils.SchedulerOutput`] is returned, otherwise a
tuple is returned where the first element is the sample tensor.
"""
if self.num_inference_steps is None:
raise ValueError(
"Number of inference steps is 'None', you need to run 'set_timesteps' after creating the scheduler"
)
if not self.config.skip_prk_steps and len(self.ets) < 3:
raise ValueError(
f"{self.__class__} can only be run AFTER scheduler has been run "
"in 'prk' mode for at least 12 iterations "
"See: https://github.com/huggingface/diffusers/blob/main/src/diffusers/pipelines/pipeline_pndm.py "
"for more information."
)
prev_timestep = timestep - self.config.num_train_timesteps // self.num_inference_steps
if self.counter != 1:
self.ets = self.ets[-3:]
self.ets.append(model_output)
else:
prev_timestep = timestep
timestep = timestep + self.config.num_train_timesteps // self.num_inference_steps
if len(self.ets) == 1 and self.counter == 0:
model_output = model_output
self.cur_sample = sample
elif len(self.ets) == 1 and self.counter == 1:
model_output = (model_output + self.ets[-1]) / 2
sample = self.cur_sample
self.cur_sample = None
elif len(self.ets) == 2:
model_output = (3 * self.ets[-1] - self.ets[-2]) / 2
elif len(self.ets) == 3:
model_output = (23 * self.ets[-1] - 16 * self.ets[-2] + 5 * self.ets[-3]) / 12
else:
model_output = (1 / 24) * (55 * self.ets[-1] - 59 * self.ets[-2] + 37 * self.ets[-3] - 9 * self.ets[-4])
prev_sample = self._get_prev_sample(sample, timestep, prev_timestep, model_output)
self.counter += 1
if not return_dict:
return (prev_sample,)
return SchedulerOutput(prev_sample=prev_sample)
def scale_model_input(self, sample: torch.FloatTensor, *args, **kwargs) -> torch.FloatTensor:
"""
Ensures interchangeability with schedulers that need to scale the denoising model input depending on the
current timestep.
Args:
sample (`torch.FloatTensor`):
The input sample.
Returns:
`torch.FloatTensor`:
A scaled input sample.
"""
return sample
def _get_prev_sample(self, sample, timestep, prev_timestep, model_output):
# See formula (9) of PNDM paper https://arxiv.org/pdf/2202.09778.pdf
# this function computes x_(t−δ) using the formula of (9)
# Note that x_t needs to be added to both sides of the equation
# Notation (<variable name> -> <name in paper>
# alpha_prod_t -> α_t
# alpha_prod_t_prev -> α_(t−δ)
# beta_prod_t -> (1 - α_t)
# beta_prod_t_prev -> (1 - α_(t−δ))
# sample -> x_t
# model_output -> e_θ(x_t, t)
# prev_sample -> x_(t−δ)
alpha_prod_t = self.alphas_cumprod[timestep]
alpha_prod_t_prev = self.alphas_cumprod[prev_timestep] if prev_timestep >= 0 else self.final_alpha_cumprod
beta_prod_t = 1 - alpha_prod_t
beta_prod_t_prev = 1 - alpha_prod_t_prev
if self.config.prediction_type == "v_prediction":
model_output = (alpha_prod_t**0.5) * model_output + (beta_prod_t**0.5) * sample
elif self.config.prediction_type != "epsilon":
raise ValueError(
f"prediction_type given as {self.config.prediction_type} must be one of `epsilon` or `v_prediction`"
)
# corresponds to (α_(t−δ) - α_t) divided by
# denominator of x_t in formula (9) and plus 1
# Note: (α_(t−δ) - α_t) / (sqrt(α_t) * (sqrt(α_(t−δ)) + sqr(α_t))) =
# sqrt(α_(t−δ)) / sqrt(α_t))
sample_coeff = (alpha_prod_t_prev / alpha_prod_t) ** (0.5)
# corresponds to denominator of e_θ(x_t, t) in formula (9)
model_output_denom_coeff = alpha_prod_t * beta_prod_t_prev ** (0.5) + (
alpha_prod_t * beta_prod_t * alpha_prod_t_prev
) ** (0.5)
# full formula (9)
prev_sample = (
sample_coeff * sample - (alpha_prod_t_prev - alpha_prod_t) * model_output / model_output_denom_coeff
)
return prev_sample
# Copied from diffusers.schedulers.scheduling_ddpm.DDPMScheduler.add_noise
def add_noise(
self,
original_samples: torch.FloatTensor,
noise: torch.FloatTensor,
timesteps: torch.IntTensor,
) -> torch.FloatTensor:
# Make sure alphas_cumprod and timestep have same device and dtype as original_samples
# Move the self.alphas_cumprod to device to avoid redundant CPU to GPU data movement
# for the subsequent add_noise calls
self.alphas_cumprod = self.alphas_cumprod.to(device=original_samples.device)
alphas_cumprod = self.alphas_cumprod.to(dtype=original_samples.dtype)
timesteps = timesteps.to(original_samples.device)
sqrt_alpha_prod = alphas_cumprod[timesteps] ** 0.5
sqrt_alpha_prod = sqrt_alpha_prod.flatten()
while len(sqrt_alpha_prod.shape) < len(original_samples.shape):
sqrt_alpha_prod = sqrt_alpha_prod.unsqueeze(-1)
sqrt_one_minus_alpha_prod = (1 - alphas_cumprod[timesteps]) ** 0.5
sqrt_one_minus_alpha_prod = sqrt_one_minus_alpha_prod.flatten()
while len(sqrt_one_minus_alpha_prod.shape) < len(original_samples.shape):
sqrt_one_minus_alpha_prod = sqrt_one_minus_alpha_prod.unsqueeze(-1)
noisy_samples = sqrt_alpha_prod * original_samples + sqrt_one_minus_alpha_prod * noise
return noisy_samples
def __len__(self):
return self.config.num_train_timesteps
| diffusers/src/diffusers/schedulers/scheduling_pndm.py/0 | {
"file_path": "diffusers/src/diffusers/schedulers/scheduling_pndm.py",
"repo_id": "diffusers",
"token_count": 9520
} | 137 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Doc utilities: Utilities related to documentation
"""
import re
def replace_example_docstring(example_docstring):
def docstring_decorator(fn):
func_doc = fn.__doc__
lines = func_doc.split("\n")
i = 0
while i < len(lines) and re.search(r"^\s*Examples?:\s*$", lines[i]) is None:
i += 1
if i < len(lines):
lines[i] = example_docstring
func_doc = "\n".join(lines)
else:
raise ValueError(
f"The function {fn} should have an empty 'Examples:' in its docstring as placeholder, "
f"current docstring is:\n{func_doc}"
)
fn.__doc__ = func_doc
return fn
return docstring_decorator
| diffusers/src/diffusers/utils/doc_utils.py/0 | {
"file_path": "diffusers/src/diffusers/utils/doc_utils.py",
"repo_id": "diffusers",
"token_count": 506
} | 138 |
# Copyright 2023 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Import utilities: Utilities related to imports and our lazy inits.
"""
import importlib.util
import operator as op
import os
import sys
from collections import OrderedDict
from itertools import chain
from types import ModuleType
from typing import Any, Union
from huggingface_hub.utils import is_jinja_available # noqa: F401
from packaging import version
from packaging.version import Version, parse
from . import logging
# The package importlib_metadata is in a different place, depending on the python version.
if sys.version_info < (3, 8):
import importlib_metadata
else:
import importlib.metadata as importlib_metadata
logger = logging.get_logger(__name__) # pylint: disable=invalid-name
ENV_VARS_TRUE_VALUES = {"1", "ON", "YES", "TRUE"}
ENV_VARS_TRUE_AND_AUTO_VALUES = ENV_VARS_TRUE_VALUES.union({"AUTO"})
USE_TF = os.environ.get("USE_TF", "AUTO").upper()
USE_TORCH = os.environ.get("USE_TORCH", "AUTO").upper()
USE_JAX = os.environ.get("USE_FLAX", "AUTO").upper()
USE_SAFETENSORS = os.environ.get("USE_SAFETENSORS", "AUTO").upper()
DIFFUSERS_SLOW_IMPORT = os.environ.get("DIFFUSERS_SLOW_IMPORT", "FALSE").upper()
DIFFUSERS_SLOW_IMPORT = DIFFUSERS_SLOW_IMPORT in ENV_VARS_TRUE_VALUES
STR_OPERATION_TO_FUNC = {">": op.gt, ">=": op.ge, "==": op.eq, "!=": op.ne, "<=": op.le, "<": op.lt}
_torch_version = "N/A"
if USE_TORCH in ENV_VARS_TRUE_AND_AUTO_VALUES and USE_TF not in ENV_VARS_TRUE_VALUES:
_torch_available = importlib.util.find_spec("torch") is not None
if _torch_available:
try:
_torch_version = importlib_metadata.version("torch")
logger.info(f"PyTorch version {_torch_version} available.")
except importlib_metadata.PackageNotFoundError:
_torch_available = False
else:
logger.info("Disabling PyTorch because USE_TORCH is set")
_torch_available = False
_torch_xla_available = importlib.util.find_spec("torch_xla") is not None
if _torch_xla_available:
try:
_torch_xla_version = importlib_metadata.version("torch_xla")
logger.info(f"PyTorch XLA version {_torch_xla_version} available.")
except ImportError:
_torch_xla_available = False
_jax_version = "N/A"
_flax_version = "N/A"
if USE_JAX in ENV_VARS_TRUE_AND_AUTO_VALUES:
_flax_available = importlib.util.find_spec("jax") is not None and importlib.util.find_spec("flax") is not None
if _flax_available:
try:
_jax_version = importlib_metadata.version("jax")
_flax_version = importlib_metadata.version("flax")
logger.info(f"JAX version {_jax_version}, Flax version {_flax_version} available.")
except importlib_metadata.PackageNotFoundError:
_flax_available = False
else:
_flax_available = False
if USE_SAFETENSORS in ENV_VARS_TRUE_AND_AUTO_VALUES:
_safetensors_available = importlib.util.find_spec("safetensors") is not None
if _safetensors_available:
try:
_safetensors_version = importlib_metadata.version("safetensors")
logger.info(f"Safetensors version {_safetensors_version} available.")
except importlib_metadata.PackageNotFoundError:
_safetensors_available = False
else:
logger.info("Disabling Safetensors because USE_TF is set")
_safetensors_available = False
_transformers_available = importlib.util.find_spec("transformers") is not None
try:
_transformers_version = importlib_metadata.version("transformers")
logger.debug(f"Successfully imported transformers version {_transformers_version}")
except importlib_metadata.PackageNotFoundError:
_transformers_available = False
_inflect_available = importlib.util.find_spec("inflect") is not None
try:
_inflect_version = importlib_metadata.version("inflect")
logger.debug(f"Successfully imported inflect version {_inflect_version}")
except importlib_metadata.PackageNotFoundError:
_inflect_available = False
_unidecode_available = importlib.util.find_spec("unidecode") is not None
try:
_unidecode_version = importlib_metadata.version("unidecode")
logger.debug(f"Successfully imported unidecode version {_unidecode_version}")
except importlib_metadata.PackageNotFoundError:
_unidecode_available = False
_onnxruntime_version = "N/A"
_onnx_available = importlib.util.find_spec("onnxruntime") is not None
if _onnx_available:
candidates = (
"onnxruntime",
"onnxruntime-gpu",
"ort_nightly_gpu",
"onnxruntime-directml",
"onnxruntime-openvino",
"ort_nightly_directml",
"onnxruntime-rocm",
"onnxruntime-training",
)
_onnxruntime_version = None
# For the metadata, we have to look for both onnxruntime and onnxruntime-gpu
for pkg in candidates:
try:
_onnxruntime_version = importlib_metadata.version(pkg)
break
except importlib_metadata.PackageNotFoundError:
pass
_onnx_available = _onnxruntime_version is not None
if _onnx_available:
logger.debug(f"Successfully imported onnxruntime version {_onnxruntime_version}")
# (sayakpaul): importlib.util.find_spec("opencv-python") returns None even when it's installed.
# _opencv_available = importlib.util.find_spec("opencv-python") is not None
try:
candidates = (
"opencv-python",
"opencv-contrib-python",
"opencv-python-headless",
"opencv-contrib-python-headless",
)
_opencv_version = None
for pkg in candidates:
try:
_opencv_version = importlib_metadata.version(pkg)
break
except importlib_metadata.PackageNotFoundError:
pass
_opencv_available = _opencv_version is not None
if _opencv_available:
logger.debug(f"Successfully imported cv2 version {_opencv_version}")
except importlib_metadata.PackageNotFoundError:
_opencv_available = False
_scipy_available = importlib.util.find_spec("scipy") is not None
try:
_scipy_version = importlib_metadata.version("scipy")
logger.debug(f"Successfully imported scipy version {_scipy_version}")
except importlib_metadata.PackageNotFoundError:
_scipy_available = False
_librosa_available = importlib.util.find_spec("librosa") is not None
try:
_librosa_version = importlib_metadata.version("librosa")
logger.debug(f"Successfully imported librosa version {_librosa_version}")
except importlib_metadata.PackageNotFoundError:
_librosa_available = False
_accelerate_available = importlib.util.find_spec("accelerate") is not None
try:
_accelerate_version = importlib_metadata.version("accelerate")
logger.debug(f"Successfully imported accelerate version {_accelerate_version}")
except importlib_metadata.PackageNotFoundError:
_accelerate_available = False
_xformers_available = importlib.util.find_spec("xformers") is not None
try:
_xformers_version = importlib_metadata.version("xformers")
if _torch_available:
_torch_version = importlib_metadata.version("torch")
if version.Version(_torch_version) < version.Version("1.12"):
raise ValueError("xformers is installed in your environment and requires PyTorch >= 1.12")
logger.debug(f"Successfully imported xformers version {_xformers_version}")
except importlib_metadata.PackageNotFoundError:
_xformers_available = False
_k_diffusion_available = importlib.util.find_spec("k_diffusion") is not None
try:
_k_diffusion_version = importlib_metadata.version("k_diffusion")
logger.debug(f"Successfully imported k-diffusion version {_k_diffusion_version}")
except importlib_metadata.PackageNotFoundError:
_k_diffusion_available = False
_note_seq_available = importlib.util.find_spec("note_seq") is not None
try:
_note_seq_version = importlib_metadata.version("note_seq")
logger.debug(f"Successfully imported note-seq version {_note_seq_version}")
except importlib_metadata.PackageNotFoundError:
_note_seq_available = False
_wandb_available = importlib.util.find_spec("wandb") is not None
try:
_wandb_version = importlib_metadata.version("wandb")
logger.debug(f"Successfully imported wandb version {_wandb_version }")
except importlib_metadata.PackageNotFoundError:
_wandb_available = False
_tensorboard_available = importlib.util.find_spec("tensorboard")
try:
_tensorboard_version = importlib_metadata.version("tensorboard")
logger.debug(f"Successfully imported tensorboard version {_tensorboard_version}")
except importlib_metadata.PackageNotFoundError:
_tensorboard_available = False
_compel_available = importlib.util.find_spec("compel")
try:
_compel_version = importlib_metadata.version("compel")
logger.debug(f"Successfully imported compel version {_compel_version}")
except importlib_metadata.PackageNotFoundError:
_compel_available = False
_ftfy_available = importlib.util.find_spec("ftfy") is not None
try:
_ftfy_version = importlib_metadata.version("ftfy")
logger.debug(f"Successfully imported ftfy version {_ftfy_version}")
except importlib_metadata.PackageNotFoundError:
_ftfy_available = False
_bs4_available = importlib.util.find_spec("bs4") is not None
try:
# importlib metadata under different name
_bs4_version = importlib_metadata.version("beautifulsoup4")
logger.debug(f"Successfully imported ftfy version {_bs4_version}")
except importlib_metadata.PackageNotFoundError:
_bs4_available = False
_torchsde_available = importlib.util.find_spec("torchsde") is not None
try:
_torchsde_version = importlib_metadata.version("torchsde")
logger.debug(f"Successfully imported torchsde version {_torchsde_version}")
except importlib_metadata.PackageNotFoundError:
_torchsde_available = False
_invisible_watermark_available = importlib.util.find_spec("imwatermark") is not None
try:
_invisible_watermark_version = importlib_metadata.version("invisible-watermark")
logger.debug(f"Successfully imported invisible-watermark version {_invisible_watermark_version}")
except importlib_metadata.PackageNotFoundError:
_invisible_watermark_available = False
_peft_available = importlib.util.find_spec("peft") is not None
try:
_peft_version = importlib_metadata.version("peft")
logger.debug(f"Successfully imported peft version {_peft_version}")
except importlib_metadata.PackageNotFoundError:
_peft_available = False
_torchvision_available = importlib.util.find_spec("torchvision") is not None
try:
_torchvision_version = importlib_metadata.version("torchvision")
logger.debug(f"Successfully imported torchvision version {_torchvision_version}")
except importlib_metadata.PackageNotFoundError:
_torchvision_available = False
def is_torch_available():
return _torch_available
def is_torch_xla_available():
return _torch_xla_available
def is_flax_available():
return _flax_available
def is_transformers_available():
return _transformers_available
def is_inflect_available():
return _inflect_available
def is_unidecode_available():
return _unidecode_available
def is_onnx_available():
return _onnx_available
def is_opencv_available():
return _opencv_available
def is_scipy_available():
return _scipy_available
def is_librosa_available():
return _librosa_available
def is_xformers_available():
return _xformers_available
def is_accelerate_available():
return _accelerate_available
def is_k_diffusion_available():
return _k_diffusion_available
def is_note_seq_available():
return _note_seq_available
def is_wandb_available():
return _wandb_available
def is_tensorboard_available():
return _tensorboard_available
def is_compel_available():
return _compel_available
def is_ftfy_available():
return _ftfy_available
def is_bs4_available():
return _bs4_available
def is_torchsde_available():
return _torchsde_available
def is_invisible_watermark_available():
return _invisible_watermark_available
def is_peft_available():
return _peft_available
def is_torchvision_available():
return _torchvision_available
# docstyle-ignore
FLAX_IMPORT_ERROR = """
{0} requires the FLAX library but it was not found in your environment. Checkout the instructions on the
installation page: https://github.com/google/flax and follow the ones that match your environment.
"""
# docstyle-ignore
INFLECT_IMPORT_ERROR = """
{0} requires the inflect library but it was not found in your environment. You can install it with pip: `pip install
inflect`
"""
# docstyle-ignore
PYTORCH_IMPORT_ERROR = """
{0} requires the PyTorch library but it was not found in your environment. Checkout the instructions on the
installation page: https://pytorch.org/get-started/locally/ and follow the ones that match your environment.
"""
# docstyle-ignore
ONNX_IMPORT_ERROR = """
{0} requires the onnxruntime library but it was not found in your environment. You can install it with pip: `pip
install onnxruntime`
"""
# docstyle-ignore
OPENCV_IMPORT_ERROR = """
{0} requires the OpenCV library but it was not found in your environment. You can install it with pip: `pip
install opencv-python`
"""
# docstyle-ignore
SCIPY_IMPORT_ERROR = """
{0} requires the scipy library but it was not found in your environment. You can install it with pip: `pip install
scipy`
"""
# docstyle-ignore
LIBROSA_IMPORT_ERROR = """
{0} requires the librosa library but it was not found in your environment. Checkout the instructions on the
installation page: https://librosa.org/doc/latest/install.html and follow the ones that match your environment.
"""
# docstyle-ignore
TRANSFORMERS_IMPORT_ERROR = """
{0} requires the transformers library but it was not found in your environment. You can install it with pip: `pip
install transformers`
"""
# docstyle-ignore
UNIDECODE_IMPORT_ERROR = """
{0} requires the unidecode library but it was not found in your environment. You can install it with pip: `pip install
Unidecode`
"""
# docstyle-ignore
K_DIFFUSION_IMPORT_ERROR = """
{0} requires the k-diffusion library but it was not found in your environment. You can install it with pip: `pip
install k-diffusion`
"""
# docstyle-ignore
NOTE_SEQ_IMPORT_ERROR = """
{0} requires the note-seq library but it was not found in your environment. You can install it with pip: `pip
install note-seq`
"""
# docstyle-ignore
WANDB_IMPORT_ERROR = """
{0} requires the wandb library but it was not found in your environment. You can install it with pip: `pip
install wandb`
"""
# docstyle-ignore
TENSORBOARD_IMPORT_ERROR = """
{0} requires the tensorboard library but it was not found in your environment. You can install it with pip: `pip
install tensorboard`
"""
# docstyle-ignore
COMPEL_IMPORT_ERROR = """
{0} requires the compel library but it was not found in your environment. You can install it with pip: `pip install compel`
"""
# docstyle-ignore
BS4_IMPORT_ERROR = """
{0} requires the Beautiful Soup library but it was not found in your environment. You can install it with pip:
`pip install beautifulsoup4`. Please note that you may need to restart your runtime after installation.
"""
# docstyle-ignore
FTFY_IMPORT_ERROR = """
{0} requires the ftfy library but it was not found in your environment. Checkout the instructions on the
installation section: https://github.com/rspeer/python-ftfy/tree/master#installing and follow the ones
that match your environment. Please note that you may need to restart your runtime after installation.
"""
# docstyle-ignore
TORCHSDE_IMPORT_ERROR = """
{0} requires the torchsde library but it was not found in your environment. You can install it with pip: `pip install torchsde`
"""
# docstyle-ignore
INVISIBLE_WATERMARK_IMPORT_ERROR = """
{0} requires the invisible-watermark library but it was not found in your environment. You can install it with pip: `pip install invisible-watermark>=0.2.0`
"""
BACKENDS_MAPPING = OrderedDict(
[
("bs4", (is_bs4_available, BS4_IMPORT_ERROR)),
("flax", (is_flax_available, FLAX_IMPORT_ERROR)),
("inflect", (is_inflect_available, INFLECT_IMPORT_ERROR)),
("onnx", (is_onnx_available, ONNX_IMPORT_ERROR)),
("opencv", (is_opencv_available, OPENCV_IMPORT_ERROR)),
("scipy", (is_scipy_available, SCIPY_IMPORT_ERROR)),
("torch", (is_torch_available, PYTORCH_IMPORT_ERROR)),
("transformers", (is_transformers_available, TRANSFORMERS_IMPORT_ERROR)),
("unidecode", (is_unidecode_available, UNIDECODE_IMPORT_ERROR)),
("librosa", (is_librosa_available, LIBROSA_IMPORT_ERROR)),
("k_diffusion", (is_k_diffusion_available, K_DIFFUSION_IMPORT_ERROR)),
("note_seq", (is_note_seq_available, NOTE_SEQ_IMPORT_ERROR)),
("wandb", (is_wandb_available, WANDB_IMPORT_ERROR)),
("tensorboard", (is_tensorboard_available, TENSORBOARD_IMPORT_ERROR)),
("compel", (is_compel_available, COMPEL_IMPORT_ERROR)),
("ftfy", (is_ftfy_available, FTFY_IMPORT_ERROR)),
("torchsde", (is_torchsde_available, TORCHSDE_IMPORT_ERROR)),
("invisible_watermark", (is_invisible_watermark_available, INVISIBLE_WATERMARK_IMPORT_ERROR)),
]
)
def requires_backends(obj, backends):
if not isinstance(backends, (list, tuple)):
backends = [backends]
name = obj.__name__ if hasattr(obj, "__name__") else obj.__class__.__name__
checks = (BACKENDS_MAPPING[backend] for backend in backends)
failed = [msg.format(name) for available, msg in checks if not available()]
if failed:
raise ImportError("".join(failed))
if name in [
"VersatileDiffusionTextToImagePipeline",
"VersatileDiffusionPipeline",
"VersatileDiffusionDualGuidedPipeline",
"StableDiffusionImageVariationPipeline",
"UnCLIPPipeline",
] and is_transformers_version("<", "4.25.0"):
raise ImportError(
f"You need to install `transformers>=4.25` in order to use {name}: \n```\n pip install"
" --upgrade transformers \n```"
)
if name in ["StableDiffusionDepth2ImgPipeline", "StableDiffusionPix2PixZeroPipeline"] and is_transformers_version(
"<", "4.26.0"
):
raise ImportError(
f"You need to install `transformers>=4.26` in order to use {name}: \n```\n pip install"
" --upgrade transformers \n```"
)
class DummyObject(type):
"""
Metaclass for the dummy objects. Any class inheriting from it will return the ImportError generated by
`requires_backend` each time a user tries to access any method of that class.
"""
def __getattr__(cls, key):
if key.startswith("_") and key not in ["_load_connected_pipes", "_is_onnx"]:
return super().__getattr__(cls, key)
requires_backends(cls, cls._backends)
# This function was copied from: https://github.com/huggingface/accelerate/blob/874c4967d94badd24f893064cc3bef45f57cadf7/src/accelerate/utils/versions.py#L319
def compare_versions(library_or_version: Union[str, Version], operation: str, requirement_version: str):
"""
Args:
Compares a library version to some requirement using a given operation.
library_or_version (`str` or `packaging.version.Version`):
A library name or a version to check.
operation (`str`):
A string representation of an operator, such as `">"` or `"<="`.
requirement_version (`str`):
The version to compare the library version against
"""
if operation not in STR_OPERATION_TO_FUNC.keys():
raise ValueError(f"`operation` must be one of {list(STR_OPERATION_TO_FUNC.keys())}, received {operation}")
operation = STR_OPERATION_TO_FUNC[operation]
if isinstance(library_or_version, str):
library_or_version = parse(importlib_metadata.version(library_or_version))
return operation(library_or_version, parse(requirement_version))
# This function was copied from: https://github.com/huggingface/accelerate/blob/874c4967d94badd24f893064cc3bef45f57cadf7/src/accelerate/utils/versions.py#L338
def is_torch_version(operation: str, version: str):
"""
Args:
Compares the current PyTorch version to a given reference with an operation.
operation (`str`):
A string representation of an operator, such as `">"` or `"<="`
version (`str`):
A string version of PyTorch
"""
return compare_versions(parse(_torch_version), operation, version)
def is_transformers_version(operation: str, version: str):
"""
Args:
Compares the current Transformers version to a given reference with an operation.
operation (`str`):
A string representation of an operator, such as `">"` or `"<="`
version (`str`):
A version string
"""
if not _transformers_available:
return False
return compare_versions(parse(_transformers_version), operation, version)
def is_accelerate_version(operation: str, version: str):
"""
Args:
Compares the current Accelerate version to a given reference with an operation.
operation (`str`):
A string representation of an operator, such as `">"` or `"<="`
version (`str`):
A version string
"""
if not _accelerate_available:
return False
return compare_versions(parse(_accelerate_version), operation, version)
def is_k_diffusion_version(operation: str, version: str):
"""
Args:
Compares the current k-diffusion version to a given reference with an operation.
operation (`str`):
A string representation of an operator, such as `">"` or `"<="`
version (`str`):
A version string
"""
if not _k_diffusion_available:
return False
return compare_versions(parse(_k_diffusion_version), operation, version)
def get_objects_from_module(module):
"""
Args:
Returns a dict of object names and values in a module, while skipping private/internal objects
module (ModuleType):
Module to extract the objects from.
Returns:
dict: Dictionary of object names and corresponding values
"""
objects = {}
for name in dir(module):
if name.startswith("_"):
continue
objects[name] = getattr(module, name)
return objects
class OptionalDependencyNotAvailable(BaseException):
"""An error indicating that an optional dependency of Diffusers was not found in the environment."""
class _LazyModule(ModuleType):
"""
Module class that surfaces all objects but only performs associated imports when the objects are requested.
"""
# Very heavily inspired by optuna.integration._IntegrationModule
# https://github.com/optuna/optuna/blob/master/optuna/integration/__init__.py
def __init__(self, name, module_file, import_structure, module_spec=None, extra_objects=None):
super().__init__(name)
self._modules = set(import_structure.keys())
self._class_to_module = {}
for key, values in import_structure.items():
for value in values:
self._class_to_module[value] = key
# Needed for autocompletion in an IDE
self.__all__ = list(import_structure.keys()) + list(chain(*import_structure.values()))
self.__file__ = module_file
self.__spec__ = module_spec
self.__path__ = [os.path.dirname(module_file)]
self._objects = {} if extra_objects is None else extra_objects
self._name = name
self._import_structure = import_structure
# Needed for autocompletion in an IDE
def __dir__(self):
result = super().__dir__()
# The elements of self.__all__ that are submodules may or may not be in the dir already, depending on whether
# they have been accessed or not. So we only add the elements of self.__all__ that are not already in the dir.
for attr in self.__all__:
if attr not in result:
result.append(attr)
return result
def __getattr__(self, name: str) -> Any:
if name in self._objects:
return self._objects[name]
if name in self._modules:
value = self._get_module(name)
elif name in self._class_to_module.keys():
module = self._get_module(self._class_to_module[name])
value = getattr(module, name)
else:
raise AttributeError(f"module {self.__name__} has no attribute {name}")
setattr(self, name, value)
return value
def _get_module(self, module_name: str):
try:
return importlib.import_module("." + module_name, self.__name__)
except Exception as e:
raise RuntimeError(
f"Failed to import {self.__name__}.{module_name} because of the following error (look up to see its"
f" traceback):\n{e}"
) from e
def __reduce__(self):
return (self.__class__, (self._name, self.__file__, self._import_structure))
| diffusers/src/diffusers/utils/import_utils.py/0 | {
"file_path": "diffusers/src/diffusers/utils/import_utils.py",
"repo_id": "diffusers",
"token_count": 9368
} | 139 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import copy
import gc
import importlib
import os
import tempfile
import time
import unittest
import numpy as np
import torch
import torch.nn as nn
from huggingface_hub import hf_hub_download
from huggingface_hub.repocard import RepoCard
from packaging import version
from transformers import CLIPTextModel, CLIPTextModelWithProjection, CLIPTokenizer
from diffusers import (
AutoencoderKL,
AutoPipelineForImage2Image,
ControlNetModel,
DDIMScheduler,
DiffusionPipeline,
EulerDiscreteScheduler,
LCMScheduler,
StableDiffusionPipeline,
StableDiffusionXLControlNetPipeline,
StableDiffusionXLPipeline,
UNet2DConditionModel,
)
from diffusers.utils.import_utils import is_accelerate_available, is_peft_available
from diffusers.utils.testing_utils import (
floats_tensor,
load_image,
nightly,
numpy_cosine_similarity_distance,
require_peft_backend,
require_peft_version_greater,
require_torch_gpu,
slow,
torch_device,
)
if is_accelerate_available():
from accelerate.utils import release_memory
if is_peft_available():
from peft import LoraConfig
from peft.tuners.tuners_utils import BaseTunerLayer
from peft.utils import get_peft_model_state_dict
def state_dicts_almost_equal(sd1, sd2):
sd1 = dict(sorted(sd1.items()))
sd2 = dict(sorted(sd2.items()))
models_are_equal = True
for ten1, ten2 in zip(sd1.values(), sd2.values()):
if (ten1 - ten2).abs().max() > 1e-3:
models_are_equal = False
return models_are_equal
@require_peft_backend
class PeftLoraLoaderMixinTests:
torch_device = "cuda" if torch.cuda.is_available() else "cpu"
pipeline_class = None
scheduler_cls = None
scheduler_kwargs = None
has_two_text_encoders = False
unet_kwargs = None
vae_kwargs = None
def get_dummy_components(self, scheduler_cls=None):
scheduler_cls = self.scheduler_cls if scheduler_cls is None else LCMScheduler
rank = 4
torch.manual_seed(0)
unet = UNet2DConditionModel(**self.unet_kwargs)
scheduler = scheduler_cls(**self.scheduler_kwargs)
torch.manual_seed(0)
vae = AutoencoderKL(**self.vae_kwargs)
text_encoder = CLIPTextModel.from_pretrained("peft-internal-testing/tiny-clip-text-2")
tokenizer = CLIPTokenizer.from_pretrained("peft-internal-testing/tiny-clip-text-2")
if self.has_two_text_encoders:
text_encoder_2 = CLIPTextModelWithProjection.from_pretrained("peft-internal-testing/tiny-clip-text-2")
tokenizer_2 = CLIPTokenizer.from_pretrained("peft-internal-testing/tiny-clip-text-2")
text_lora_config = LoraConfig(
r=rank,
lora_alpha=rank,
target_modules=["q_proj", "k_proj", "v_proj", "out_proj"],
init_lora_weights=False,
)
unet_lora_config = LoraConfig(
r=rank, lora_alpha=rank, target_modules=["to_q", "to_k", "to_v", "to_out.0"], init_lora_weights=False
)
if self.has_two_text_encoders:
pipeline_components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"text_encoder_2": text_encoder_2,
"tokenizer_2": tokenizer_2,
"image_encoder": None,
"feature_extractor": None,
}
else:
pipeline_components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"safety_checker": None,
"feature_extractor": None,
"image_encoder": None,
}
return pipeline_components, text_lora_config, unet_lora_config
def get_dummy_inputs(self, with_generator=True):
batch_size = 1
sequence_length = 10
num_channels = 4
sizes = (32, 32)
generator = torch.manual_seed(0)
noise = floats_tensor((batch_size, num_channels) + sizes)
input_ids = torch.randint(1, sequence_length, size=(batch_size, sequence_length), generator=generator)
pipeline_inputs = {
"prompt": "A painting of a squirrel eating a burger",
"num_inference_steps": 2,
"guidance_scale": 6.0,
"output_type": "np",
}
if with_generator:
pipeline_inputs.update({"generator": generator})
return noise, input_ids, pipeline_inputs
# copied from: https://colab.research.google.com/gist/sayakpaul/df2ef6e1ae6d8c10a49d859883b10860/scratchpad.ipynb
def get_dummy_tokens(self):
max_seq_length = 77
inputs = torch.randint(2, 56, size=(1, max_seq_length), generator=torch.manual_seed(0))
prepared_inputs = {}
prepared_inputs["input_ids"] = inputs
return prepared_inputs
def check_if_lora_correctly_set(self, model) -> bool:
"""
Checks if the LoRA layers are correctly set with peft
"""
for module in model.modules():
if isinstance(module, BaseTunerLayer):
return True
return False
def test_simple_inference(self):
"""
Tests a simple inference and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs()
output_no_lora = pipe(**inputs).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
def test_simple_inference_with_text_lora(self):
"""
Tests a simple inference with lora attached on the text encoder
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
output_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
)
def test_simple_inference_with_text_lora_and_scale(self):
"""
Tests a simple inference with lora attached on the text encoder + scale argument
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
output_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
)
output_lora_scale = pipe(
**inputs, generator=torch.manual_seed(0), cross_attention_kwargs={"scale": 0.5}
).images
self.assertTrue(
not np.allclose(output_lora, output_lora_scale, atol=1e-3, rtol=1e-3),
"Lora + scale should change the output",
)
output_lora_0_scale = pipe(
**inputs, generator=torch.manual_seed(0), cross_attention_kwargs={"scale": 0.0}
).images
self.assertTrue(
np.allclose(output_no_lora, output_lora_0_scale, atol=1e-3, rtol=1e-3),
"Lora + 0 scale should lead to same result as no LoRA",
)
def test_simple_inference_with_text_lora_fused(self):
"""
Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.fuse_lora()
# Fusing should still keep the LoRA layers
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
ouput_fused = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertFalse(
np.allclose(ouput_fused, output_no_lora, atol=1e-3, rtol=1e-3), "Fused lora should change the output"
)
def test_simple_inference_with_text_lora_unloaded(self):
"""
Tests a simple inference with lora attached to text encoder, then unloads the lora weights
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.unload_lora_weights()
# unloading should remove the LoRA layers
self.assertFalse(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly unloaded in text encoder"
)
if self.has_two_text_encoders:
self.assertFalse(
self.check_if_lora_correctly_set(pipe.text_encoder_2),
"Lora not correctly unloaded in text encoder 2",
)
ouput_unloaded = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(ouput_unloaded, output_no_lora, atol=1e-3, rtol=1e-3),
"Fused lora should change the output",
)
def test_simple_inference_with_text_lora_save_load(self):
"""
Tests a simple usecase where users could use saving utilities for LoRA.
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
images_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
with tempfile.TemporaryDirectory() as tmpdirname:
text_encoder_state_dict = get_peft_model_state_dict(pipe.text_encoder)
if self.has_two_text_encoders:
text_encoder_2_state_dict = get_peft_model_state_dict(pipe.text_encoder_2)
self.pipeline_class.save_lora_weights(
save_directory=tmpdirname,
text_encoder_lora_layers=text_encoder_state_dict,
text_encoder_2_lora_layers=text_encoder_2_state_dict,
safe_serialization=False,
)
else:
self.pipeline_class.save_lora_weights(
save_directory=tmpdirname,
text_encoder_lora_layers=text_encoder_state_dict,
safe_serialization=False,
)
self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
pipe.unload_lora_weights()
pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"))
images_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
self.assertTrue(
np.allclose(images_lora, images_lora_from_pretrained, atol=1e-3, rtol=1e-3),
"Loading from saved checkpoints should give same results.",
)
def test_simple_inference_save_pretrained(self):
"""
Tests a simple usecase where users could use saving utilities for LoRA through save_pretrained
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, _ = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
images_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
with tempfile.TemporaryDirectory() as tmpdirname:
pipe.save_pretrained(tmpdirname)
pipe_from_pretrained = self.pipeline_class.from_pretrained(tmpdirname)
pipe_from_pretrained.to(self.torch_device)
self.assertTrue(
self.check_if_lora_correctly_set(pipe_from_pretrained.text_encoder),
"Lora not correctly set in text encoder",
)
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe_from_pretrained.text_encoder_2),
"Lora not correctly set in text encoder 2",
)
images_lora_save_pretrained = pipe_from_pretrained(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(images_lora, images_lora_save_pretrained, atol=1e-3, rtol=1e-3),
"Loading from saved checkpoints should give same results.",
)
def test_simple_inference_with_text_unet_lora_save_load(self):
"""
Tests a simple usecase where users could use saving utilities for LoRA for Unet + text encoder
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
images_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
with tempfile.TemporaryDirectory() as tmpdirname:
text_encoder_state_dict = get_peft_model_state_dict(pipe.text_encoder)
unet_state_dict = get_peft_model_state_dict(pipe.unet)
if self.has_two_text_encoders:
text_encoder_2_state_dict = get_peft_model_state_dict(pipe.text_encoder_2)
self.pipeline_class.save_lora_weights(
save_directory=tmpdirname,
text_encoder_lora_layers=text_encoder_state_dict,
text_encoder_2_lora_layers=text_encoder_2_state_dict,
unet_lora_layers=unet_state_dict,
safe_serialization=False,
)
else:
self.pipeline_class.save_lora_weights(
save_directory=tmpdirname,
text_encoder_lora_layers=text_encoder_state_dict,
unet_lora_layers=unet_state_dict,
safe_serialization=False,
)
self.assertTrue(os.path.isfile(os.path.join(tmpdirname, "pytorch_lora_weights.bin")))
pipe.unload_lora_weights()
pipe.load_lora_weights(os.path.join(tmpdirname, "pytorch_lora_weights.bin"))
images_lora_from_pretrained = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
self.assertTrue(
np.allclose(images_lora, images_lora_from_pretrained, atol=1e-3, rtol=1e-3),
"Loading from saved checkpoints should give same results.",
)
def test_simple_inference_with_text_unet_lora_and_scale(self):
"""
Tests a simple inference with lora attached on the text encoder + Unet + scale argument
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
output_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
not np.allclose(output_lora, output_no_lora, atol=1e-3, rtol=1e-3), "Lora should change the output"
)
output_lora_scale = pipe(
**inputs, generator=torch.manual_seed(0), cross_attention_kwargs={"scale": 0.5}
).images
self.assertTrue(
not np.allclose(output_lora, output_lora_scale, atol=1e-3, rtol=1e-3),
"Lora + scale should change the output",
)
output_lora_0_scale = pipe(
**inputs, generator=torch.manual_seed(0), cross_attention_kwargs={"scale": 0.0}
).images
self.assertTrue(
np.allclose(output_no_lora, output_lora_0_scale, atol=1e-3, rtol=1e-3),
"Lora + 0 scale should lead to same result as no LoRA",
)
self.assertTrue(
pipe.text_encoder.text_model.encoder.layers[0].self_attn.q_proj.scaling["default"] == 1.0,
"The scaling parameter has not been correctly restored!",
)
def test_simple_inference_with_text_lora_unet_fused(self):
"""
Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
and makes sure it works as expected - with unet
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.fuse_lora()
# Fusing should still keep the LoRA layers
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in unet")
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
ouput_fused = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertFalse(
np.allclose(ouput_fused, output_no_lora, atol=1e-3, rtol=1e-3), "Fused lora should change the output"
)
def test_simple_inference_with_text_unet_lora_unloaded(self):
"""
Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.unload_lora_weights()
# unloading should remove the LoRA layers
self.assertFalse(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly unloaded in text encoder"
)
self.assertFalse(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly unloaded in Unet")
if self.has_two_text_encoders:
self.assertFalse(
self.check_if_lora_correctly_set(pipe.text_encoder_2),
"Lora not correctly unloaded in text encoder 2",
)
ouput_unloaded = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(ouput_unloaded, output_no_lora, atol=1e-3, rtol=1e-3),
"Fused lora should change the output",
)
def test_simple_inference_with_text_unet_lora_unfused(self):
"""
Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.fuse_lora()
output_fused_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.unfuse_lora()
output_unfused_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
# unloading should remove the LoRA layers
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Unfuse should still keep LoRA layers"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Unfuse should still keep LoRA layers")
if self.has_two_text_encoders:
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Unfuse should still keep LoRA layers"
)
# Fuse and unfuse should lead to the same results
self.assertTrue(
np.allclose(output_fused_lora, output_unfused_lora, atol=1e-3, rtol=1e-3),
"Fused lora should change the output",
)
def test_simple_inference_with_text_unet_multi_adapter(self):
"""
Tests a simple inference with lora attached to text encoder and unet, attaches
multiple adapters and set them
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.set_adapters("adapter-1")
output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters("adapter-2")
output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters(["adapter-1", "adapter-2"])
output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0)).images
# Fuse and unfuse should lead to the same results
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
"Adapter 1 and 2 should give different results",
)
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 1 and mixed adapters should give different results",
)
self.assertFalse(
np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 2 and mixed adapters should give different results",
)
pipe.disable_lora()
output_disabled = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
"output with no lora and output with lora disabled should give same results",
)
def test_simple_inference_with_text_unet_multi_adapter_delete_adapter(self):
"""
Tests a simple inference with lora attached to text encoder and unet, attaches
multiple adapters and set/delete them
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.set_adapters("adapter-1")
output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters("adapter-2")
output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters(["adapter-1", "adapter-2"])
output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
"Adapter 1 and 2 should give different results",
)
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 1 and mixed adapters should give different results",
)
self.assertFalse(
np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 2 and mixed adapters should give different results",
)
pipe.delete_adapters("adapter-1")
output_deleted_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_deleted_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
"Adapter 1 and 2 should give different results",
)
pipe.delete_adapters("adapter-2")
output_deleted_adapters = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_no_lora, output_deleted_adapters, atol=1e-3, rtol=1e-3),
"output with no lora and output with lora disabled should give same results",
)
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
pipe.set_adapters(["adapter-1", "adapter-2"])
pipe.delete_adapters(["adapter-1", "adapter-2"])
output_deleted_adapters = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_no_lora, output_deleted_adapters, atol=1e-3, rtol=1e-3),
"output with no lora and output with lora disabled should give same results",
)
def test_simple_inference_with_text_unet_multi_adapter_weighted(self):
"""
Tests a simple inference with lora attached to text encoder and unet, attaches
multiple adapters and set them
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.set_adapters("adapter-1")
output_adapter_1 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters("adapter-2")
output_adapter_2 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters(["adapter-1", "adapter-2"])
output_adapter_mixed = pipe(**inputs, generator=torch.manual_seed(0)).images
# Fuse and unfuse should lead to the same results
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_2, atol=1e-3, rtol=1e-3),
"Adapter 1 and 2 should give different results",
)
self.assertFalse(
np.allclose(output_adapter_1, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 1 and mixed adapters should give different results",
)
self.assertFalse(
np.allclose(output_adapter_2, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Adapter 2 and mixed adapters should give different results",
)
pipe.set_adapters(["adapter-1", "adapter-2"], [0.5, 0.6])
output_adapter_mixed_weighted = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertFalse(
np.allclose(output_adapter_mixed_weighted, output_adapter_mixed, atol=1e-3, rtol=1e-3),
"Weighted adapter and mixed adapter should give different results",
)
pipe.disable_lora()
output_disabled = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_no_lora, output_disabled, atol=1e-3, rtol=1e-3),
"output with no lora and output with lora disabled should give same results",
)
def test_lora_fuse_nan(self):
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
# corrupt one LoRA weight with `inf` values
with torch.no_grad():
pipe.unet.mid_block.attentions[0].transformer_blocks[0].attn1.to_q.lora_A["adapter-1"].weight += float(
"inf"
)
# with `safe_fusing=True` we should see an Error
with self.assertRaises(ValueError):
pipe.fuse_lora(safe_fusing=True)
# without we should not see an error, but every image will be black
pipe.fuse_lora(safe_fusing=False)
out = pipe("test", num_inference_steps=2, output_type="np").images
self.assertTrue(np.isnan(out).all())
def test_get_adapters(self):
"""
Tests a simple usecase where we attach multiple adapters and check if the results
are the expected results
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
adapter_names = pipe.get_active_adapters()
self.assertListEqual(adapter_names, ["adapter-1"])
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
adapter_names = pipe.get_active_adapters()
self.assertListEqual(adapter_names, ["adapter-2"])
pipe.set_adapters(["adapter-1", "adapter-2"])
self.assertListEqual(pipe.get_active_adapters(), ["adapter-1", "adapter-2"])
def test_get_list_adapters(self):
"""
Tests a simple usecase where we attach multiple adapters and check if the results
are the expected results
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
adapter_names = pipe.get_list_adapters()
self.assertDictEqual(adapter_names, {"text_encoder": ["adapter-1"], "unet": ["adapter-1"]})
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
adapter_names = pipe.get_list_adapters()
self.assertDictEqual(
adapter_names, {"text_encoder": ["adapter-1", "adapter-2"], "unet": ["adapter-1", "adapter-2"]}
)
pipe.set_adapters(["adapter-1", "adapter-2"])
self.assertDictEqual(
pipe.get_list_adapters(),
{"unet": ["adapter-1", "adapter-2"], "text_encoder": ["adapter-1", "adapter-2"]},
)
pipe.unet.add_adapter(unet_lora_config, "adapter-3")
self.assertDictEqual(
pipe.get_list_adapters(),
{"unet": ["adapter-1", "adapter-2", "adapter-3"], "text_encoder": ["adapter-1", "adapter-2"]},
)
@require_peft_version_greater(peft_version="0.6.2")
def test_simple_inference_with_text_lora_unet_fused_multi(self):
"""
Tests a simple inference with lora attached into text encoder + fuses the lora weights into base model
and makes sure it works as expected - with unet and multi-adapter case
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
output_no_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(output_no_lora.shape == (1, 64, 64, 3))
pipe.text_encoder.add_adapter(text_lora_config, "adapter-1")
pipe.unet.add_adapter(unet_lora_config, "adapter-1")
# Attach a second adapter
pipe.text_encoder.add_adapter(text_lora_config, "adapter-2")
pipe.unet.add_adapter(unet_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-1")
pipe.text_encoder_2.add_adapter(text_lora_config, "adapter-2")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
# set them to multi-adapter inference mode
pipe.set_adapters(["adapter-1", "adapter-2"])
ouputs_all_lora = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.set_adapters(["adapter-1"])
ouputs_lora_1 = pipe(**inputs, generator=torch.manual_seed(0)).images
pipe.fuse_lora(adapter_names=["adapter-1"])
# Fusing should still keep the LoRA layers so outpout should remain the same
outputs_lora_1_fused = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(ouputs_lora_1, outputs_lora_1_fused, atol=1e-3, rtol=1e-3),
"Fused lora should not change the output",
)
pipe.unfuse_lora()
pipe.fuse_lora(adapter_names=["adapter-2", "adapter-1"])
# Fusing should still keep the LoRA layers
output_all_lora_fused = pipe(**inputs, generator=torch.manual_seed(0)).images
self.assertTrue(
np.allclose(output_all_lora_fused, ouputs_all_lora, atol=1e-3, rtol=1e-3),
"Fused lora should not change the output",
)
@unittest.skip("This is failing for now - need to investigate")
def test_simple_inference_with_text_unet_lora_unfused_torch_compile(self):
"""
Tests a simple inference with lora attached to text encoder and unet, then unloads the lora weights
and makes sure it works as expected
"""
for scheduler_cls in [DDIMScheduler, LCMScheduler]:
components, text_lora_config, unet_lora_config = self.get_dummy_components(scheduler_cls)
pipe = self.pipeline_class(**components)
pipe = pipe.to(self.torch_device)
pipe.set_progress_bar_config(disable=None)
_, _, inputs = self.get_dummy_inputs(with_generator=False)
pipe.text_encoder.add_adapter(text_lora_config)
pipe.unet.add_adapter(unet_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder), "Lora not correctly set in text encoder"
)
self.assertTrue(self.check_if_lora_correctly_set(pipe.unet), "Lora not correctly set in Unet")
if self.has_two_text_encoders:
pipe.text_encoder_2.add_adapter(text_lora_config)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder_2), "Lora not correctly set in text encoder 2"
)
pipe.unet = torch.compile(pipe.unet, mode="reduce-overhead", fullgraph=True)
pipe.text_encoder = torch.compile(pipe.text_encoder, mode="reduce-overhead", fullgraph=True)
if self.has_two_text_encoders:
pipe.text_encoder_2 = torch.compile(pipe.text_encoder_2, mode="reduce-overhead", fullgraph=True)
# Just makes sure it works..
_ = pipe(**inputs, generator=torch.manual_seed(0)).images
class StableDiffusionLoRATests(PeftLoraLoaderMixinTests, unittest.TestCase):
pipeline_class = StableDiffusionPipeline
scheduler_cls = DDIMScheduler
scheduler_kwargs = {
"beta_start": 0.00085,
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"clip_sample": False,
"set_alpha_to_one": False,
"steps_offset": 1,
}
unet_kwargs = {
"block_out_channels": (32, 64),
"layers_per_block": 2,
"sample_size": 32,
"in_channels": 4,
"out_channels": 4,
"down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
"up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
"cross_attention_dim": 32,
}
vae_kwargs = {
"block_out_channels": [32, 64],
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
"latent_channels": 4,
}
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
@slow
@require_torch_gpu
def test_integration_move_lora_cpu(self):
path = "runwayml/stable-diffusion-v1-5"
lora_id = "takuma104/lora-test-text-encoder-lora-target"
pipe = StableDiffusionPipeline.from_pretrained(path, torch_dtype=torch.float16)
pipe.load_lora_weights(lora_id, adapter_name="adapter-1")
pipe.load_lora_weights(lora_id, adapter_name="adapter-2")
pipe = pipe.to("cuda")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder),
"Lora not correctly set in text encoder",
)
self.assertTrue(
self.check_if_lora_correctly_set(pipe.unet),
"Lora not correctly set in text encoder",
)
# We will offload the first adapter in CPU and check if the offloading
# has been performed correctly
pipe.set_lora_device(["adapter-1"], "cpu")
for name, module in pipe.unet.named_modules():
if "adapter-1" in name and not isinstance(module, (nn.Dropout, nn.Identity)):
self.assertTrue(module.weight.device == torch.device("cpu"))
elif "adapter-2" in name and not isinstance(module, (nn.Dropout, nn.Identity)):
self.assertTrue(module.weight.device != torch.device("cpu"))
for name, module in pipe.text_encoder.named_modules():
if "adapter-1" in name and not isinstance(module, (nn.Dropout, nn.Identity)):
self.assertTrue(module.weight.device == torch.device("cpu"))
elif "adapter-2" in name and not isinstance(module, (nn.Dropout, nn.Identity)):
self.assertTrue(module.weight.device != torch.device("cpu"))
pipe.set_lora_device(["adapter-1"], 0)
for n, m in pipe.unet.named_modules():
if "adapter-1" in n and not isinstance(m, (nn.Dropout, nn.Identity)):
self.assertTrue(m.weight.device != torch.device("cpu"))
for n, m in pipe.text_encoder.named_modules():
if "adapter-1" in n and not isinstance(m, (nn.Dropout, nn.Identity)):
self.assertTrue(m.weight.device != torch.device("cpu"))
pipe.set_lora_device(["adapter-1", "adapter-2"], "cuda")
for n, m in pipe.unet.named_modules():
if ("adapter-1" in n or "adapter-2" in n) and not isinstance(m, (nn.Dropout, nn.Identity)):
self.assertTrue(m.weight.device != torch.device("cpu"))
for n, m in pipe.text_encoder.named_modules():
if ("adapter-1" in n or "adapter-2" in n) and not isinstance(m, (nn.Dropout, nn.Identity)):
self.assertTrue(m.weight.device != torch.device("cpu"))
@slow
@require_torch_gpu
def test_integration_logits_with_scale(self):
path = "runwayml/stable-diffusion-v1-5"
lora_id = "takuma104/lora-test-text-encoder-lora-target"
pipe = StableDiffusionPipeline.from_pretrained(path, torch_dtype=torch.float32)
pipe.load_lora_weights(lora_id)
pipe = pipe.to("cuda")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder),
"Lora not correctly set in text encoder 2",
)
prompt = "a red sks dog"
images = pipe(
prompt=prompt,
num_inference_steps=15,
cross_attention_kwargs={"scale": 0.5},
generator=torch.manual_seed(0),
output_type="np",
).images
expected_slice_scale = np.array([0.307, 0.283, 0.310, 0.310, 0.300, 0.314, 0.336, 0.314, 0.321])
predicted_slice = images[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
@slow
@require_torch_gpu
def test_integration_logits_no_scale(self):
path = "runwayml/stable-diffusion-v1-5"
lora_id = "takuma104/lora-test-text-encoder-lora-target"
pipe = StableDiffusionPipeline.from_pretrained(path, torch_dtype=torch.float32)
pipe.load_lora_weights(lora_id)
pipe = pipe.to("cuda")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.text_encoder),
"Lora not correctly set in text encoder",
)
prompt = "a red sks dog"
images = pipe(prompt=prompt, num_inference_steps=30, generator=torch.manual_seed(0), output_type="np").images
expected_slice_scale = np.array([0.074, 0.064, 0.073, 0.0842, 0.069, 0.0641, 0.0794, 0.076, 0.084])
predicted_slice = images[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
@nightly
@require_torch_gpu
def test_integration_logits_multi_adapter(self):
path = "stabilityai/stable-diffusion-xl-base-1.0"
lora_id = "CiroN2022/toy-face"
pipe = StableDiffusionXLPipeline.from_pretrained(path, torch_dtype=torch.float16)
pipe.load_lora_weights(lora_id, weight_name="toy_face_sdxl.safetensors", adapter_name="toy")
pipe = pipe.to("cuda")
self.assertTrue(
self.check_if_lora_correctly_set(pipe.unet),
"Lora not correctly set in Unet",
)
prompt = "toy_face of a hacker with a hoodie"
lora_scale = 0.9
images = pipe(
prompt=prompt,
num_inference_steps=30,
generator=torch.manual_seed(0),
cross_attention_kwargs={"scale": lora_scale},
output_type="np",
).images
expected_slice_scale = np.array([0.538, 0.539, 0.540, 0.540, 0.542, 0.539, 0.538, 0.541, 0.539])
predicted_slice = images[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
pipe.load_lora_weights("nerijs/pixel-art-xl", weight_name="pixel-art-xl.safetensors", adapter_name="pixel")
pipe.set_adapters("pixel")
prompt = "pixel art, a hacker with a hoodie, simple, flat colors"
images = pipe(
prompt,
num_inference_steps=30,
guidance_scale=7.5,
cross_attention_kwargs={"scale": lora_scale},
generator=torch.manual_seed(0),
output_type="np",
).images
predicted_slice = images[0, -3:, -3:, -1].flatten()
expected_slice_scale = np.array(
[0.61973065, 0.62018543, 0.62181497, 0.61933696, 0.6208608, 0.620576, 0.6200281, 0.62258327, 0.6259889]
)
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
# multi-adapter inference
pipe.set_adapters(["pixel", "toy"], adapter_weights=[0.5, 1.0])
images = pipe(
prompt,
num_inference_steps=30,
guidance_scale=7.5,
cross_attention_kwargs={"scale": 1.0},
generator=torch.manual_seed(0),
output_type="np",
).images
predicted_slice = images[0, -3:, -3:, -1].flatten()
expected_slice_scale = np.array([0.5888, 0.5897, 0.5946, 0.5888, 0.5935, 0.5946, 0.5857, 0.5891, 0.5909])
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
# Lora disabled
pipe.disable_lora()
images = pipe(
prompt,
num_inference_steps=30,
guidance_scale=7.5,
cross_attention_kwargs={"scale": lora_scale},
generator=torch.manual_seed(0),
output_type="np",
).images
predicted_slice = images[0, -3:, -3:, -1].flatten()
expected_slice_scale = np.array([0.5456, 0.5466, 0.5487, 0.5458, 0.5469, 0.5454, 0.5446, 0.5479, 0.5487])
self.assertTrue(np.allclose(expected_slice_scale, predicted_slice, atol=1e-3, rtol=1e-3))
class StableDiffusionXLLoRATests(PeftLoraLoaderMixinTests, unittest.TestCase):
has_two_text_encoders = True
pipeline_class = StableDiffusionXLPipeline
scheduler_cls = EulerDiscreteScheduler
scheduler_kwargs = {
"beta_start": 0.00085,
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"timestep_spacing": "leading",
"steps_offset": 1,
}
unet_kwargs = {
"block_out_channels": (32, 64),
"layers_per_block": 2,
"sample_size": 32,
"in_channels": 4,
"out_channels": 4,
"down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
"up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
"attention_head_dim": (2, 4),
"use_linear_projection": True,
"addition_embed_type": "text_time",
"addition_time_embed_dim": 8,
"transformer_layers_per_block": (1, 2),
"projection_class_embeddings_input_dim": 80, # 6 * 8 + 32
"cross_attention_dim": 64,
}
vae_kwargs = {
"block_out_channels": [32, 64],
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
"latent_channels": 4,
"sample_size": 128,
}
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
@slow
@require_torch_gpu
class LoraIntegrationTests(PeftLoraLoaderMixinTests, unittest.TestCase):
pipeline_class = StableDiffusionPipeline
scheduler_cls = DDIMScheduler
scheduler_kwargs = {
"beta_start": 0.00085,
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"clip_sample": False,
"set_alpha_to_one": False,
"steps_offset": 1,
}
unet_kwargs = {
"block_out_channels": (32, 64),
"layers_per_block": 2,
"sample_size": 32,
"in_channels": 4,
"out_channels": 4,
"down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
"up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
"cross_attention_dim": 32,
}
vae_kwargs = {
"block_out_channels": [32, 64],
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
"latent_channels": 4,
}
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_dreambooth_old_format(self):
generator = torch.Generator("cpu").manual_seed(0)
lora_model_id = "hf-internal-testing/lora_dreambooth_dog_example"
card = RepoCard.load(lora_model_id)
base_model_id = card.data.to_dict()["base_model"]
pipe = StableDiffusionPipeline.from_pretrained(base_model_id, safety_checker=None)
pipe = pipe.to(torch_device)
pipe.load_lora_weights(lora_model_id)
images = pipe(
"A photo of a sks dog floating in the river", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.7207, 0.6787, 0.6010, 0.7478, 0.6838, 0.6064, 0.6984, 0.6443, 0.5785])
self.assertTrue(np.allclose(images, expected, atol=1e-4))
release_memory(pipe)
def test_dreambooth_text_encoder_new_format(self):
generator = torch.Generator().manual_seed(0)
lora_model_id = "hf-internal-testing/lora-trained"
card = RepoCard.load(lora_model_id)
base_model_id = card.data.to_dict()["base_model"]
pipe = StableDiffusionPipeline.from_pretrained(base_model_id, safety_checker=None)
pipe = pipe.to(torch_device)
pipe.load_lora_weights(lora_model_id)
images = pipe("A photo of a sks dog", output_type="np", generator=generator, num_inference_steps=2).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.6628, 0.6138, 0.5390, 0.6625, 0.6130, 0.5463, 0.6166, 0.5788, 0.5359])
self.assertTrue(np.allclose(images, expected, atol=1e-4))
release_memory(pipe)
def test_a1111(self):
generator = torch.Generator().manual_seed(0)
pipe = StableDiffusionPipeline.from_pretrained("hf-internal-testing/Counterfeit-V2.5", safety_checker=None).to(
torch_device
)
lora_model_id = "hf-internal-testing/civitai-light-shadow-lora"
lora_filename = "light_and_shadow.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.3636, 0.3708, 0.3694, 0.3679, 0.3829, 0.3677, 0.3692, 0.3688, 0.3292])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_lycoris(self):
generator = torch.Generator().manual_seed(0)
pipe = StableDiffusionPipeline.from_pretrained(
"hf-internal-testing/Amixx", safety_checker=None, use_safetensors=True, variant="fp16"
).to(torch_device)
lora_model_id = "hf-internal-testing/edgLycorisMugler-light"
lora_filename = "edgLycorisMugler-light.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.6463, 0.658, 0.599, 0.6542, 0.6512, 0.6213, 0.658, 0.6485, 0.6017])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_a1111_with_model_cpu_offload(self):
generator = torch.Generator().manual_seed(0)
pipe = StableDiffusionPipeline.from_pretrained("hf-internal-testing/Counterfeit-V2.5", safety_checker=None)
pipe.enable_model_cpu_offload()
lora_model_id = "hf-internal-testing/civitai-light-shadow-lora"
lora_filename = "light_and_shadow.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.3636, 0.3708, 0.3694, 0.3679, 0.3829, 0.3677, 0.3692, 0.3688, 0.3292])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_a1111_with_sequential_cpu_offload(self):
generator = torch.Generator().manual_seed(0)
pipe = StableDiffusionPipeline.from_pretrained("hf-internal-testing/Counterfeit-V2.5", safety_checker=None)
pipe.enable_sequential_cpu_offload()
lora_model_id = "hf-internal-testing/civitai-light-shadow-lora"
lora_filename = "light_and_shadow.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.3636, 0.3708, 0.3694, 0.3679, 0.3829, 0.3677, 0.3692, 0.3688, 0.3292])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_kohya_sd_v15_with_higher_dimensions(self):
generator = torch.Generator().manual_seed(0)
pipe = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", safety_checker=None).to(
torch_device
)
lora_model_id = "hf-internal-testing/urushisato-lora"
lora_filename = "urushisato_v15.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.7165, 0.6616, 0.5833, 0.7504, 0.6718, 0.587, 0.6871, 0.6361, 0.5694])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_vanilla_funetuning(self):
generator = torch.Generator().manual_seed(0)
lora_model_id = "hf-internal-testing/sd-model-finetuned-lora-t4"
card = RepoCard.load(lora_model_id)
base_model_id = card.data.to_dict()["base_model"]
pipe = StableDiffusionPipeline.from_pretrained(base_model_id, safety_checker=None)
pipe = pipe.to(torch_device)
pipe.load_lora_weights(lora_model_id)
images = pipe("A pokemon with blue eyes.", output_type="np", generator=generator, num_inference_steps=2).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.7406, 0.699, 0.5963, 0.7493, 0.7045, 0.6096, 0.6886, 0.6388, 0.583])
self.assertTrue(np.allclose(images, expected, atol=1e-4))
release_memory(pipe)
def test_unload_kohya_lora(self):
generator = torch.manual_seed(0)
prompt = "masterpiece, best quality, mountain"
num_inference_steps = 2
pipe = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", safety_checker=None).to(
torch_device
)
initial_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
initial_images = initial_images[0, -3:, -3:, -1].flatten()
lora_model_id = "hf-internal-testing/civitai-colored-icons-lora"
lora_filename = "Colored_Icons_by_vizsumit.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
generator = torch.manual_seed(0)
lora_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
lora_images = lora_images[0, -3:, -3:, -1].flatten()
pipe.unload_lora_weights()
generator = torch.manual_seed(0)
unloaded_lora_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
unloaded_lora_images = unloaded_lora_images[0, -3:, -3:, -1].flatten()
self.assertFalse(np.allclose(initial_images, lora_images))
self.assertTrue(np.allclose(initial_images, unloaded_lora_images, atol=1e-3))
release_memory(pipe)
def test_load_unload_load_kohya_lora(self):
# This test ensures that a Kohya-style LoRA can be safely unloaded and then loaded
# without introducing any side-effects. Even though the test uses a Kohya-style
# LoRA, the underlying adapter handling mechanism is format-agnostic.
generator = torch.manual_seed(0)
prompt = "masterpiece, best quality, mountain"
num_inference_steps = 2
pipe = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", safety_checker=None).to(
torch_device
)
initial_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
initial_images = initial_images[0, -3:, -3:, -1].flatten()
lora_model_id = "hf-internal-testing/civitai-colored-icons-lora"
lora_filename = "Colored_Icons_by_vizsumit.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
generator = torch.manual_seed(0)
lora_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
lora_images = lora_images[0, -3:, -3:, -1].flatten()
pipe.unload_lora_weights()
generator = torch.manual_seed(0)
unloaded_lora_images = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
unloaded_lora_images = unloaded_lora_images[0, -3:, -3:, -1].flatten()
self.assertFalse(np.allclose(initial_images, lora_images))
self.assertTrue(np.allclose(initial_images, unloaded_lora_images, atol=1e-3))
# make sure we can load a LoRA again after unloading and they don't have
# any undesired effects.
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
generator = torch.manual_seed(0)
lora_images_again = pipe(
prompt, output_type="np", generator=generator, num_inference_steps=num_inference_steps
).images
lora_images_again = lora_images_again[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(lora_images, lora_images_again, atol=1e-3))
release_memory(pipe)
@slow
@require_torch_gpu
class LoraSDXLIntegrationTests(PeftLoraLoaderMixinTests, unittest.TestCase):
has_two_text_encoders = True
pipeline_class = StableDiffusionXLPipeline
scheduler_cls = EulerDiscreteScheduler
scheduler_kwargs = {
"beta_start": 0.00085,
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"timestep_spacing": "leading",
"steps_offset": 1,
}
unet_kwargs = {
"block_out_channels": (32, 64),
"layers_per_block": 2,
"sample_size": 32,
"in_channels": 4,
"out_channels": 4,
"down_block_types": ("DownBlock2D", "CrossAttnDownBlock2D"),
"up_block_types": ("CrossAttnUpBlock2D", "UpBlock2D"),
"attention_head_dim": (2, 4),
"use_linear_projection": True,
"addition_embed_type": "text_time",
"addition_time_embed_dim": 8,
"transformer_layers_per_block": (1, 2),
"projection_class_embeddings_input_dim": 80, # 6 * 8 + 32
"cross_attention_dim": 64,
}
vae_kwargs = {
"block_out_channels": [32, 64],
"in_channels": 3,
"out_channels": 3,
"down_block_types": ["DownEncoderBlock2D", "DownEncoderBlock2D"],
"up_block_types": ["UpDecoderBlock2D", "UpDecoderBlock2D"],
"latent_channels": 4,
"sample_size": 128,
}
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_sdxl_0_9_lora_one(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-0.9")
lora_model_id = "hf-internal-testing/sdxl-0.9-daiton-lora"
lora_filename = "daiton-xl-lora-test.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.enable_model_cpu_offload()
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.3838, 0.3482, 0.3588, 0.3162, 0.319, 0.3369, 0.338, 0.3366, 0.3213])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_sdxl_0_9_lora_two(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-0.9")
lora_model_id = "hf-internal-testing/sdxl-0.9-costumes-lora"
lora_filename = "saijo.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.enable_model_cpu_offload()
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.3137, 0.3269, 0.3355, 0.255, 0.2577, 0.2563, 0.2679, 0.2758, 0.2626])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_sdxl_0_9_lora_three(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-0.9")
lora_model_id = "hf-internal-testing/sdxl-0.9-kamepan-lora"
lora_filename = "kame_sdxl_v2-000020-16rank.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.enable_model_cpu_offload()
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.4015, 0.3761, 0.3616, 0.3745, 0.3462, 0.3337, 0.3564, 0.3649, 0.3468])
self.assertTrue(np.allclose(images, expected, atol=5e-3))
release_memory(pipe)
def test_sdxl_1_0_lora(self):
generator = torch.Generator("cpu").manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
pipe.enable_model_cpu_offload()
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.4468, 0.4087, 0.4134, 0.366, 0.3202, 0.3505, 0.3786, 0.387, 0.3535])
self.assertTrue(np.allclose(images, expected, atol=1e-4))
release_memory(pipe)
def test_sdxl_lcm_lora(self):
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
pipe.enable_model_cpu_offload()
generator = torch.Generator("cpu").manual_seed(0)
lora_model_id = "latent-consistency/lcm-lora-sdxl"
pipe.load_lora_weights(lora_model_id)
image = pipe(
"masterpiece, best quality, mountain", generator=generator, num_inference_steps=4, guidance_scale=0.5
).images[0]
expected_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/lcm_lora/sdxl_lcm_lora.png"
)
image_np = pipe.image_processor.pil_to_numpy(image)
expected_image_np = pipe.image_processor.pil_to_numpy(expected_image)
max_diff = numpy_cosine_similarity_distance(image_np.flatten(), expected_image_np.flatten())
assert max_diff < 1e-4
pipe.unload_lora_weights()
release_memory(pipe)
def test_sdv1_5_lcm_lora(self):
pipe = DiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", torch_dtype=torch.float16)
pipe.to("cuda")
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
generator = torch.Generator("cpu").manual_seed(0)
lora_model_id = "latent-consistency/lcm-lora-sdv1-5"
pipe.load_lora_weights(lora_model_id)
image = pipe(
"masterpiece, best quality, mountain", generator=generator, num_inference_steps=4, guidance_scale=0.5
).images[0]
expected_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/lcm_lora/sdv15_lcm_lora.png"
)
image_np = pipe.image_processor.pil_to_numpy(image)
expected_image_np = pipe.image_processor.pil_to_numpy(expected_image)
max_diff = numpy_cosine_similarity_distance(image_np.flatten(), expected_image_np.flatten())
assert max_diff < 1e-4
pipe.unload_lora_weights()
release_memory(pipe)
def test_sdv1_5_lcm_lora_img2img(self):
pipe = AutoPipelineForImage2Image.from_pretrained("runwayml/stable-diffusion-v1-5", torch_dtype=torch.float16)
pipe.to("cuda")
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
init_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/img2img/fantasy_landscape.png"
)
generator = torch.Generator("cpu").manual_seed(0)
lora_model_id = "latent-consistency/lcm-lora-sdv1-5"
pipe.load_lora_weights(lora_model_id)
image = pipe(
"snowy mountain",
generator=generator,
image=init_image,
strength=0.5,
num_inference_steps=4,
guidance_scale=0.5,
).images[0]
expected_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/lcm_lora/sdv15_lcm_lora_img2img.png"
)
image_np = pipe.image_processor.pil_to_numpy(image)
expected_image_np = pipe.image_processor.pil_to_numpy(expected_image)
max_diff = numpy_cosine_similarity_distance(image_np.flatten(), expected_image_np.flatten())
assert max_diff < 1e-4
pipe.unload_lora_weights()
release_memory(pipe)
def test_sdxl_1_0_lora_fusion(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.fuse_lora()
# We need to unload the lora weights since in the previous API `fuse_lora` led to lora weights being
# silently deleted - otherwise this will CPU OOM
pipe.unload_lora_weights()
pipe.enable_model_cpu_offload()
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
# This way we also test equivalence between LoRA fusion and the non-fusion behaviour.
expected = np.array([0.4468, 0.4087, 0.4134, 0.366, 0.3202, 0.3505, 0.3786, 0.387, 0.3535])
self.assertTrue(np.allclose(images, expected, atol=1e-4))
release_memory(pipe)
def test_sdxl_1_0_lora_unfusion(self):
generator = torch.Generator("cpu").manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.fuse_lora()
pipe.enable_model_cpu_offload()
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=3
).images
images_with_fusion = images.flatten()
pipe.unfuse_lora()
generator = torch.Generator("cpu").manual_seed(0)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=3
).images
images_without_fusion = images.flatten()
max_diff = numpy_cosine_similarity_distance(images_with_fusion, images_without_fusion)
assert max_diff < 1e-4
release_memory(pipe)
def test_sdxl_1_0_lora_unfusion_effectivity(self):
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
pipe.enable_model_cpu_offload()
generator = torch.Generator().manual_seed(0)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
original_image_slice = images[0, -3:, -3:, -1].flatten()
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
pipe.fuse_lora()
generator = torch.Generator().manual_seed(0)
_ = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
pipe.unfuse_lora()
# We need to unload the lora weights - in the old API unfuse led to unloading the adapter weights
pipe.unload_lora_weights()
generator = torch.Generator().manual_seed(0)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images_without_fusion_slice = images[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(original_image_slice, images_without_fusion_slice, atol=1e-3))
release_memory(pipe)
def test_sdxl_1_0_lora_fusion_efficiency(self):
generator = torch.Generator().manual_seed(0)
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16)
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename, torch_dtype=torch.float16)
pipe.enable_model_cpu_offload()
start_time = time.time()
for _ in range(3):
pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
end_time = time.time()
elapsed_time_non_fusion = end_time - start_time
del pipe
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16)
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename, torch_dtype=torch.float16)
pipe.fuse_lora()
# We need to unload the lora weights since in the previous API `fuse_lora` led to lora weights being
# silently deleted - otherwise this will CPU OOM
pipe.unload_lora_weights()
pipe.enable_model_cpu_offload()
generator = torch.Generator().manual_seed(0)
start_time = time.time()
for _ in range(3):
pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
end_time = time.time()
elapsed_time_fusion = end_time - start_time
self.assertTrue(elapsed_time_fusion < elapsed_time_non_fusion)
release_memory(pipe)
def test_sdxl_1_0_last_ben(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
pipe.enable_model_cpu_offload()
lora_model_id = "TheLastBen/Papercut_SDXL"
lora_filename = "papercut.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe("papercut.safetensors", output_type="np", generator=generator, num_inference_steps=2).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.5244, 0.4347, 0.4312, 0.4246, 0.4398, 0.4409, 0.4884, 0.4938, 0.4094])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_sdxl_1_0_fuse_unfuse_all(self):
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16)
text_encoder_1_sd = copy.deepcopy(pipe.text_encoder.state_dict())
text_encoder_2_sd = copy.deepcopy(pipe.text_encoder_2.state_dict())
unet_sd = copy.deepcopy(pipe.unet.state_dict())
pipe.load_lora_weights(
"davizca87/sun-flower", weight_name="snfw3rXL-000004.safetensors", torch_dtype=torch.float16
)
fused_te_state_dict = pipe.text_encoder.state_dict()
fused_te_2_state_dict = pipe.text_encoder_2.state_dict()
unet_state_dict = pipe.unet.state_dict()
peft_ge_070 = version.parse(importlib.metadata.version("peft")) >= version.parse("0.7.0")
def remap_key(key, sd):
# some keys have moved around for PEFT >= 0.7.0, but they should still be loaded correctly
if (key in sd) or (not peft_ge_070):
return key
# instead of linear.weight, we now have linear.base_layer.weight, etc.
if key.endswith(".weight"):
key = key[:-7] + ".base_layer.weight"
elif key.endswith(".bias"):
key = key[:-5] + ".base_layer.bias"
return key
for key, value in text_encoder_1_sd.items():
key = remap_key(key, fused_te_state_dict)
self.assertTrue(torch.allclose(fused_te_state_dict[key], value))
for key, value in text_encoder_2_sd.items():
key = remap_key(key, fused_te_2_state_dict)
self.assertTrue(torch.allclose(fused_te_2_state_dict[key], value))
for key, value in unet_state_dict.items():
self.assertTrue(torch.allclose(unet_state_dict[key], value))
pipe.fuse_lora()
pipe.unload_lora_weights()
assert not state_dicts_almost_equal(text_encoder_1_sd, pipe.text_encoder.state_dict())
assert not state_dicts_almost_equal(text_encoder_2_sd, pipe.text_encoder_2.state_dict())
assert not state_dicts_almost_equal(unet_sd, pipe.unet.state_dict())
release_memory(pipe)
del unet_sd, text_encoder_1_sd, text_encoder_2_sd
def test_sdxl_1_0_lora_with_sequential_cpu_offloading(self):
generator = torch.Generator().manual_seed(0)
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")
pipe.enable_sequential_cpu_offload()
lora_model_id = "hf-internal-testing/sdxl-1.0-lora"
lora_filename = "sd_xl_offset_example-lora_1.0.safetensors"
pipe.load_lora_weights(lora_model_id, weight_name=lora_filename)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.4468, 0.4087, 0.4134, 0.366, 0.3202, 0.3505, 0.3786, 0.387, 0.3535])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipe)
def test_sd_load_civitai_empty_network_alpha(self):
"""
This test simply checks that loading a LoRA with an empty network alpha works fine
See: https://github.com/huggingface/diffusers/issues/5606
"""
pipeline = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5").to("cuda")
pipeline.enable_sequential_cpu_offload()
civitai_path = hf_hub_download("ybelkada/test-ahi-civitai", "ahi_lora_weights.safetensors")
pipeline.load_lora_weights(civitai_path, adapter_name="ahri")
images = pipeline(
"ahri, masterpiece, league of legends",
output_type="np",
generator=torch.manual_seed(156),
num_inference_steps=5,
).images
images = images[0, -3:, -3:, -1].flatten()
expected = np.array([0.0, 0.0, 0.0, 0.002557, 0.020954, 0.001792, 0.006581, 0.00591, 0.002995])
self.assertTrue(np.allclose(images, expected, atol=1e-3))
release_memory(pipeline)
def test_canny_lora(self):
controlnet = ControlNetModel.from_pretrained("diffusers/controlnet-canny-sdxl-1.0")
pipe = StableDiffusionXLControlNetPipeline.from_pretrained(
"stabilityai/stable-diffusion-xl-base-1.0", controlnet=controlnet
)
pipe.load_lora_weights("nerijs/pixel-art-xl", weight_name="pixel-art-xl.safetensors")
pipe.enable_sequential_cpu_offload()
generator = torch.Generator(device="cpu").manual_seed(0)
prompt = "corgi"
image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/sd_controlnet/bird_canny.png"
)
images = pipe(prompt, image=image, generator=generator, output_type="np", num_inference_steps=3).images
assert images[0].shape == (768, 512, 3)
original_image = images[0, -3:, -3:, -1].flatten()
expected_image = np.array([0.4574, 0.4461, 0.4435, 0.4462, 0.4396, 0.439, 0.4474, 0.4486, 0.4333])
assert np.allclose(original_image, expected_image, atol=1e-04)
release_memory(pipe)
@nightly
def test_sequential_fuse_unfuse(self):
pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.float16)
# 1. round
pipe.load_lora_weights("Pclanglais/TintinIA", torch_dtype=torch.float16)
pipe.to("cuda")
pipe.fuse_lora()
generator = torch.Generator().manual_seed(0)
images = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
image_slice = images[0, -3:, -3:, -1].flatten()
pipe.unfuse_lora()
# 2. round
pipe.load_lora_weights("ProomptEngineer/pe-balloon-diffusion-style", torch_dtype=torch.float16)
pipe.fuse_lora()
pipe.unfuse_lora()
# 3. round
pipe.load_lora_weights("ostris/crayon_style_lora_sdxl", torch_dtype=torch.float16)
pipe.fuse_lora()
pipe.unfuse_lora()
# 4. back to 1st round
pipe.load_lora_weights("Pclanglais/TintinIA", torch_dtype=torch.float16)
pipe.fuse_lora()
generator = torch.Generator().manual_seed(0)
images_2 = pipe(
"masterpiece, best quality, mountain", output_type="np", generator=generator, num_inference_steps=2
).images
image_slice_2 = images_2[0, -3:, -3:, -1].flatten()
self.assertTrue(np.allclose(image_slice, image_slice_2, atol=1e-3))
release_memory(pipe)
| diffusers/tests/lora/test_lora_layers_peft.py/0 | {
"file_path": "diffusers/tests/lora/test_lora_layers_peft.py",
"repo_id": "diffusers",
"token_count": 46068
} | 140 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import math
import unittest
import torch
from diffusers import UNet2DModel
from diffusers.utils import logging
from diffusers.utils.testing_utils import (
enable_full_determinism,
floats_tensor,
require_torch_accelerator,
slow,
torch_all_close,
torch_device,
)
from ..test_modeling_common import ModelTesterMixin, UNetTesterMixin
logger = logging.get_logger(__name__)
enable_full_determinism()
class Unet2DModelTests(ModelTesterMixin, UNetTesterMixin, unittest.TestCase):
model_class = UNet2DModel
main_input_name = "sample"
@property
def dummy_input(self):
batch_size = 4
num_channels = 3
sizes = (32, 32)
noise = floats_tensor((batch_size, num_channels) + sizes).to(torch_device)
time_step = torch.tensor([10]).to(torch_device)
return {"sample": noise, "timestep": time_step}
@property
def input_shape(self):
return (3, 32, 32)
@property
def output_shape(self):
return (3, 32, 32)
def prepare_init_args_and_inputs_for_common(self):
init_dict = {
"block_out_channels": (32, 64),
"down_block_types": ("DownBlock2D", "AttnDownBlock2D"),
"up_block_types": ("AttnUpBlock2D", "UpBlock2D"),
"attention_head_dim": 3,
"out_channels": 3,
"in_channels": 3,
"layers_per_block": 2,
"sample_size": 32,
}
inputs_dict = self.dummy_input
return init_dict, inputs_dict
def test_mid_block_attn_groups(self):
init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
init_dict["norm_num_groups"] = 16
init_dict["add_attention"] = True
init_dict["attn_norm_num_groups"] = 8
model = self.model_class(**init_dict)
model.to(torch_device)
model.eval()
self.assertIsNotNone(
model.mid_block.attentions[0].group_norm, "Mid block Attention group norm should exist but does not."
)
self.assertEqual(
model.mid_block.attentions[0].group_norm.num_groups,
init_dict["attn_norm_num_groups"],
"Mid block Attention group norm does not have the expected number of groups.",
)
with torch.no_grad():
output = model(**inputs_dict)
if isinstance(output, dict):
output = output.to_tuple()[0]
self.assertIsNotNone(output)
expected_shape = inputs_dict["sample"].shape
self.assertEqual(output.shape, expected_shape, "Input and output shapes do not match")
class UNetLDMModelTests(ModelTesterMixin, UNetTesterMixin, unittest.TestCase):
model_class = UNet2DModel
main_input_name = "sample"
@property
def dummy_input(self):
batch_size = 4
num_channels = 4
sizes = (32, 32)
noise = floats_tensor((batch_size, num_channels) + sizes).to(torch_device)
time_step = torch.tensor([10]).to(torch_device)
return {"sample": noise, "timestep": time_step}
@property
def input_shape(self):
return (4, 32, 32)
@property
def output_shape(self):
return (4, 32, 32)
def prepare_init_args_and_inputs_for_common(self):
init_dict = {
"sample_size": 32,
"in_channels": 4,
"out_channels": 4,
"layers_per_block": 2,
"block_out_channels": (32, 64),
"attention_head_dim": 32,
"down_block_types": ("DownBlock2D", "DownBlock2D"),
"up_block_types": ("UpBlock2D", "UpBlock2D"),
}
inputs_dict = self.dummy_input
return init_dict, inputs_dict
def test_from_pretrained_hub(self):
model, loading_info = UNet2DModel.from_pretrained("fusing/unet-ldm-dummy-update", output_loading_info=True)
self.assertIsNotNone(model)
self.assertEqual(len(loading_info["missing_keys"]), 0)
model.to(torch_device)
image = model(**self.dummy_input).sample
assert image is not None, "Make sure output is not None"
@require_torch_accelerator
def test_from_pretrained_accelerate(self):
model, _ = UNet2DModel.from_pretrained("fusing/unet-ldm-dummy-update", output_loading_info=True)
model.to(torch_device)
image = model(**self.dummy_input).sample
assert image is not None, "Make sure output is not None"
@require_torch_accelerator
def test_from_pretrained_accelerate_wont_change_results(self):
# by defautl model loading will use accelerate as `low_cpu_mem_usage=True`
model_accelerate, _ = UNet2DModel.from_pretrained("fusing/unet-ldm-dummy-update", output_loading_info=True)
model_accelerate.to(torch_device)
model_accelerate.eval()
noise = torch.randn(
1,
model_accelerate.config.in_channels,
model_accelerate.config.sample_size,
model_accelerate.config.sample_size,
generator=torch.manual_seed(0),
)
noise = noise.to(torch_device)
time_step = torch.tensor([10] * noise.shape[0]).to(torch_device)
arr_accelerate = model_accelerate(noise, time_step)["sample"]
# two models don't need to stay in the device at the same time
del model_accelerate
torch.cuda.empty_cache()
gc.collect()
model_normal_load, _ = UNet2DModel.from_pretrained(
"fusing/unet-ldm-dummy-update", output_loading_info=True, low_cpu_mem_usage=False
)
model_normal_load.to(torch_device)
model_normal_load.eval()
arr_normal_load = model_normal_load(noise, time_step)["sample"]
assert torch_all_close(arr_accelerate, arr_normal_load, rtol=1e-3)
def test_output_pretrained(self):
model = UNet2DModel.from_pretrained("fusing/unet-ldm-dummy-update")
model.eval()
model.to(torch_device)
noise = torch.randn(
1,
model.config.in_channels,
model.config.sample_size,
model.config.sample_size,
generator=torch.manual_seed(0),
)
noise = noise.to(torch_device)
time_step = torch.tensor([10] * noise.shape[0]).to(torch_device)
with torch.no_grad():
output = model(noise, time_step).sample
output_slice = output[0, -1, -3:, -3:].flatten().cpu()
# fmt: off
expected_output_slice = torch.tensor([-13.3258, -20.1100, -15.9873, -17.6617, -23.0596, -17.9419, -13.3675, -16.1889, -12.3800])
# fmt: on
self.assertTrue(torch_all_close(output_slice, expected_output_slice, rtol=1e-3))
class NCSNppModelTests(ModelTesterMixin, UNetTesterMixin, unittest.TestCase):
model_class = UNet2DModel
main_input_name = "sample"
@property
def dummy_input(self, sizes=(32, 32)):
batch_size = 4
num_channels = 3
noise = floats_tensor((batch_size, num_channels) + sizes).to(torch_device)
time_step = torch.tensor(batch_size * [10]).to(dtype=torch.int32, device=torch_device)
return {"sample": noise, "timestep": time_step}
@property
def input_shape(self):
return (3, 32, 32)
@property
def output_shape(self):
return (3, 32, 32)
def prepare_init_args_and_inputs_for_common(self):
init_dict = {
"block_out_channels": [32, 64, 64, 64],
"in_channels": 3,
"layers_per_block": 1,
"out_channels": 3,
"time_embedding_type": "fourier",
"norm_eps": 1e-6,
"mid_block_scale_factor": math.sqrt(2.0),
"norm_num_groups": None,
"down_block_types": [
"SkipDownBlock2D",
"AttnSkipDownBlock2D",
"SkipDownBlock2D",
"SkipDownBlock2D",
],
"up_block_types": [
"SkipUpBlock2D",
"SkipUpBlock2D",
"AttnSkipUpBlock2D",
"SkipUpBlock2D",
],
}
inputs_dict = self.dummy_input
return init_dict, inputs_dict
@slow
def test_from_pretrained_hub(self):
model, loading_info = UNet2DModel.from_pretrained("google/ncsnpp-celebahq-256", output_loading_info=True)
self.assertIsNotNone(model)
self.assertEqual(len(loading_info["missing_keys"]), 0)
model.to(torch_device)
inputs = self.dummy_input
noise = floats_tensor((4, 3) + (256, 256)).to(torch_device)
inputs["sample"] = noise
image = model(**inputs)
assert image is not None, "Make sure output is not None"
@slow
def test_output_pretrained_ve_mid(self):
model = UNet2DModel.from_pretrained("google/ncsnpp-celebahq-256")
model.to(torch_device)
batch_size = 4
num_channels = 3
sizes = (256, 256)
noise = torch.ones((batch_size, num_channels) + sizes).to(torch_device)
time_step = torch.tensor(batch_size * [1e-4]).to(torch_device)
with torch.no_grad():
output = model(noise, time_step).sample
output_slice = output[0, -3:, -3:, -1].flatten().cpu()
# fmt: off
expected_output_slice = torch.tensor([-4836.2178, -6487.1470, -3816.8196, -7964.9302, -10966.3037, -20043.5957, 8137.0513, 2340.3328, 544.6056])
# fmt: on
self.assertTrue(torch_all_close(output_slice, expected_output_slice, rtol=1e-2))
def test_output_pretrained_ve_large(self):
model = UNet2DModel.from_pretrained("fusing/ncsnpp-ffhq-ve-dummy-update")
model.to(torch_device)
batch_size = 4
num_channels = 3
sizes = (32, 32)
noise = torch.ones((batch_size, num_channels) + sizes).to(torch_device)
time_step = torch.tensor(batch_size * [1e-4]).to(torch_device)
with torch.no_grad():
output = model(noise, time_step).sample
output_slice = output[0, -3:, -3:, -1].flatten().cpu()
# fmt: off
expected_output_slice = torch.tensor([-0.0325, -0.0900, -0.0869, -0.0332, -0.0725, -0.0270, -0.0101, 0.0227, 0.0256])
# fmt: on
self.assertTrue(torch_all_close(output_slice, expected_output_slice, rtol=1e-2))
def test_forward_with_norm_groups(self):
# not required for this model
pass
| diffusers/tests/models/unets/test_models_unet_2d.py/0 | {
"file_path": "diffusers/tests/models/unets/test_models_unet_2d.py",
"repo_id": "diffusers",
"token_count": 5101
} | 141 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import torch
from diffusers import DDIMScheduler, DDPMScheduler, UNet2DModel
from diffusers.training_utils import set_seed
from diffusers.utils.testing_utils import slow
torch.backends.cuda.matmul.allow_tf32 = False
class TrainingTests(unittest.TestCase):
def get_model_optimizer(self, resolution=32):
set_seed(0)
model = UNet2DModel(sample_size=resolution, in_channels=3, out_channels=3)
optimizer = torch.optim.SGD(model.parameters(), lr=0.0001)
return model, optimizer
@slow
def test_training_step_equality(self):
device = "cpu" # ensure full determinism without setting the CUBLAS_WORKSPACE_CONFIG env variable
ddpm_scheduler = DDPMScheduler(
num_train_timesteps=1000,
beta_start=0.0001,
beta_end=0.02,
beta_schedule="linear",
clip_sample=True,
)
ddim_scheduler = DDIMScheduler(
num_train_timesteps=1000,
beta_start=0.0001,
beta_end=0.02,
beta_schedule="linear",
clip_sample=True,
)
assert ddpm_scheduler.config.num_train_timesteps == ddim_scheduler.config.num_train_timesteps
# shared batches for DDPM and DDIM
set_seed(0)
clean_images = [torch.randn((4, 3, 32, 32)).clip(-1, 1).to(device) for _ in range(4)]
noise = [torch.randn((4, 3, 32, 32)).to(device) for _ in range(4)]
timesteps = [torch.randint(0, 1000, (4,)).long().to(device) for _ in range(4)]
# train with a DDPM scheduler
model, optimizer = self.get_model_optimizer(resolution=32)
model.train().to(device)
for i in range(4):
optimizer.zero_grad()
ddpm_noisy_images = ddpm_scheduler.add_noise(clean_images[i], noise[i], timesteps[i])
ddpm_noise_pred = model(ddpm_noisy_images, timesteps[i]).sample
loss = torch.nn.functional.mse_loss(ddpm_noise_pred, noise[i])
loss.backward()
optimizer.step()
del model, optimizer
# recreate the model and optimizer, and retry with DDIM
model, optimizer = self.get_model_optimizer(resolution=32)
model.train().to(device)
for i in range(4):
optimizer.zero_grad()
ddim_noisy_images = ddim_scheduler.add_noise(clean_images[i], noise[i], timesteps[i])
ddim_noise_pred = model(ddim_noisy_images, timesteps[i]).sample
loss = torch.nn.functional.mse_loss(ddim_noise_pred, noise[i])
loss.backward()
optimizer.step()
del model, optimizer
self.assertTrue(torch.allclose(ddpm_noisy_images, ddim_noisy_images, atol=1e-5))
self.assertTrue(torch.allclose(ddpm_noise_pred, ddim_noise_pred, atol=1e-5))
| diffusers/tests/others/test_training.py/0 | {
"file_path": "diffusers/tests/others/test_training.py",
"repo_id": "diffusers",
"token_count": 1482
} | 142 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
import torch
from diffusers import DDPMPipeline, DDPMScheduler, UNet2DModel
from diffusers.utils.testing_utils import enable_full_determinism, require_torch_gpu, slow, torch_device
enable_full_determinism()
class DDPMPipelineFastTests(unittest.TestCase):
@property
def dummy_uncond_unet(self):
torch.manual_seed(0)
model = UNet2DModel(
block_out_channels=(32, 64),
layers_per_block=2,
sample_size=32,
in_channels=3,
out_channels=3,
down_block_types=("DownBlock2D", "AttnDownBlock2D"),
up_block_types=("AttnUpBlock2D", "UpBlock2D"),
)
return model
def test_fast_inference(self):
device = "cpu"
unet = self.dummy_uncond_unet
scheduler = DDPMScheduler()
ddpm = DDPMPipeline(unet=unet, scheduler=scheduler)
ddpm.to(device)
ddpm.set_progress_bar_config(disable=None)
generator = torch.Generator(device=device).manual_seed(0)
image = ddpm(generator=generator, num_inference_steps=2, output_type="numpy").images
generator = torch.Generator(device=device).manual_seed(0)
image_from_tuple = ddpm(generator=generator, num_inference_steps=2, output_type="numpy", return_dict=False)[0]
image_slice = image[0, -3:, -3:, -1]
image_from_tuple_slice = image_from_tuple[0, -3:, -3:, -1]
assert image.shape == (1, 32, 32, 3)
expected_slice = np.array(
[9.956e-01, 5.785e-01, 4.675e-01, 9.930e-01, 0.0, 1.000, 1.199e-03, 2.648e-04, 5.101e-04]
)
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
assert np.abs(image_from_tuple_slice.flatten() - expected_slice).max() < 1e-2
def test_inference_predict_sample(self):
unet = self.dummy_uncond_unet
scheduler = DDPMScheduler(prediction_type="sample")
ddpm = DDPMPipeline(unet=unet, scheduler=scheduler)
ddpm.to(torch_device)
ddpm.set_progress_bar_config(disable=None)
generator = torch.manual_seed(0)
image = ddpm(generator=generator, num_inference_steps=2, output_type="numpy").images
generator = torch.manual_seed(0)
image_eps = ddpm(generator=generator, num_inference_steps=2, output_type="numpy")[0]
image_slice = image[0, -3:, -3:, -1]
image_eps_slice = image_eps[0, -3:, -3:, -1]
assert image.shape == (1, 32, 32, 3)
tolerance = 1e-2 if torch_device != "mps" else 3e-2
assert np.abs(image_slice.flatten() - image_eps_slice.flatten()).max() < tolerance
@slow
@require_torch_gpu
class DDPMPipelineIntegrationTests(unittest.TestCase):
def test_inference_cifar10(self):
model_id = "google/ddpm-cifar10-32"
unet = UNet2DModel.from_pretrained(model_id)
scheduler = DDPMScheduler.from_pretrained(model_id)
ddpm = DDPMPipeline(unet=unet, scheduler=scheduler)
ddpm.to(torch_device)
ddpm.set_progress_bar_config(disable=None)
generator = torch.manual_seed(0)
image = ddpm(generator=generator, output_type="numpy").images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 32, 32, 3)
expected_slice = np.array([0.4200, 0.3588, 0.1939, 0.3847, 0.3382, 0.2647, 0.4155, 0.3582, 0.3385])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
| diffusers/tests/pipelines/ddpm/test_ddpm.py/0 | {
"file_path": "diffusers/tests/pipelines/ddpm/test_ddpm.py",
"repo_id": "diffusers",
"token_count": 1777
} | 143 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import random
import unittest
import numpy as np
import torch
from PIL import Image
from transformers import XLMRobertaTokenizerFast
from diffusers import (
DDIMScheduler,
DDPMScheduler,
KandinskyImg2ImgPipeline,
KandinskyPriorPipeline,
UNet2DConditionModel,
VQModel,
)
from diffusers.pipelines.kandinsky.text_encoder import MCLIPConfig, MultilingualCLIP
from diffusers.utils.testing_utils import (
enable_full_determinism,
floats_tensor,
load_image,
load_numpy,
nightly,
require_torch_gpu,
slow,
torch_device,
)
from ..test_pipelines_common import PipelineTesterMixin, assert_mean_pixel_difference
enable_full_determinism()
class Dummies:
@property
def text_embedder_hidden_size(self):
return 32
@property
def time_input_dim(self):
return 32
@property
def block_out_channels_0(self):
return self.time_input_dim
@property
def time_embed_dim(self):
return self.time_input_dim * 4
@property
def cross_attention_dim(self):
return 32
@property
def dummy_tokenizer(self):
tokenizer = XLMRobertaTokenizerFast.from_pretrained("YiYiXu/tiny-random-mclip-base")
return tokenizer
@property
def dummy_text_encoder(self):
torch.manual_seed(0)
config = MCLIPConfig(
numDims=self.cross_attention_dim,
transformerDimensions=self.text_embedder_hidden_size,
hidden_size=self.text_embedder_hidden_size,
intermediate_size=37,
num_attention_heads=4,
num_hidden_layers=5,
vocab_size=1005,
)
text_encoder = MultilingualCLIP(config)
text_encoder = text_encoder.eval()
return text_encoder
@property
def dummy_unet(self):
torch.manual_seed(0)
model_kwargs = {
"in_channels": 4,
# Out channels is double in channels because predicts mean and variance
"out_channels": 8,
"addition_embed_type": "text_image",
"down_block_types": ("ResnetDownsampleBlock2D", "SimpleCrossAttnDownBlock2D"),
"up_block_types": ("SimpleCrossAttnUpBlock2D", "ResnetUpsampleBlock2D"),
"mid_block_type": "UNetMidBlock2DSimpleCrossAttn",
"block_out_channels": (self.block_out_channels_0, self.block_out_channels_0 * 2),
"layers_per_block": 1,
"encoder_hid_dim": self.text_embedder_hidden_size,
"encoder_hid_dim_type": "text_image_proj",
"cross_attention_dim": self.cross_attention_dim,
"attention_head_dim": 4,
"resnet_time_scale_shift": "scale_shift",
"class_embed_type": None,
}
model = UNet2DConditionModel(**model_kwargs)
return model
@property
def dummy_movq_kwargs(self):
return {
"block_out_channels": [32, 64],
"down_block_types": ["DownEncoderBlock2D", "AttnDownEncoderBlock2D"],
"in_channels": 3,
"latent_channels": 4,
"layers_per_block": 1,
"norm_num_groups": 8,
"norm_type": "spatial",
"num_vq_embeddings": 12,
"out_channels": 3,
"up_block_types": [
"AttnUpDecoderBlock2D",
"UpDecoderBlock2D",
],
"vq_embed_dim": 4,
}
@property
def dummy_movq(self):
torch.manual_seed(0)
model = VQModel(**self.dummy_movq_kwargs)
return model
def get_dummy_components(self):
text_encoder = self.dummy_text_encoder
tokenizer = self.dummy_tokenizer
unet = self.dummy_unet
movq = self.dummy_movq
ddim_config = {
"num_train_timesteps": 1000,
"beta_schedule": "linear",
"beta_start": 0.00085,
"beta_end": 0.012,
"clip_sample": False,
"set_alpha_to_one": False,
"steps_offset": 0,
"prediction_type": "epsilon",
"thresholding": False,
}
scheduler = DDIMScheduler(**ddim_config)
components = {
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"unet": unet,
"scheduler": scheduler,
"movq": movq,
}
return components
def get_dummy_inputs(self, device, seed=0):
image_embeds = floats_tensor((1, self.cross_attention_dim), rng=random.Random(seed)).to(device)
negative_image_embeds = floats_tensor((1, self.cross_attention_dim), rng=random.Random(seed + 1)).to(device)
# create init_image
image = floats_tensor((1, 3, 64, 64), rng=random.Random(seed)).to(device)
image = image.cpu().permute(0, 2, 3, 1)[0]
init_image = Image.fromarray(np.uint8(image)).convert("RGB").resize((256, 256))
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "horse",
"image": init_image,
"image_embeds": image_embeds,
"negative_image_embeds": negative_image_embeds,
"generator": generator,
"height": 64,
"width": 64,
"num_inference_steps": 10,
"guidance_scale": 7.0,
"strength": 0.2,
"output_type": "np",
}
return inputs
class KandinskyImg2ImgPipelineFastTests(PipelineTesterMixin, unittest.TestCase):
pipeline_class = KandinskyImg2ImgPipeline
params = ["prompt", "image_embeds", "negative_image_embeds", "image"]
batch_params = [
"prompt",
"negative_prompt",
"image_embeds",
"negative_image_embeds",
"image",
]
required_optional_params = [
"generator",
"height",
"width",
"strength",
"guidance_scale",
"negative_prompt",
"num_inference_steps",
"return_dict",
"guidance_scale",
"num_images_per_prompt",
"output_type",
"return_dict",
]
test_xformers_attention = False
def get_dummy_components(self):
dummies = Dummies()
return dummies.get_dummy_components()
def get_dummy_inputs(self, device, seed=0):
dummies = Dummies()
return dummies.get_dummy_inputs(device=device, seed=seed)
def test_kandinsky_img2img(self):
device = "cpu"
components = self.get_dummy_components()
pipe = self.pipeline_class(**components)
pipe = pipe.to(device)
pipe.set_progress_bar_config(disable=None)
output = pipe(**self.get_dummy_inputs(device))
image = output.images
image_from_tuple = pipe(
**self.get_dummy_inputs(device),
return_dict=False,
)[0]
image_slice = image[0, -3:, -3:, -1]
image_from_tuple_slice = image_from_tuple[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.5816, 0.5872, 0.4634, 0.5982, 0.4767, 0.4710, 0.4669, 0.4717, 0.4966])
assert (
np.abs(image_slice.flatten() - expected_slice).max() < 1e-2
), f" expected_slice {expected_slice}, but got {image_slice.flatten()}"
assert (
np.abs(image_from_tuple_slice.flatten() - expected_slice).max() < 1e-2
), f" expected_slice {expected_slice}, but got {image_from_tuple_slice.flatten()}"
@require_torch_gpu
def test_offloads(self):
pipes = []
components = self.get_dummy_components()
sd_pipe = self.pipeline_class(**components).to(torch_device)
pipes.append(sd_pipe)
components = self.get_dummy_components()
sd_pipe = self.pipeline_class(**components)
sd_pipe.enable_model_cpu_offload()
pipes.append(sd_pipe)
components = self.get_dummy_components()
sd_pipe = self.pipeline_class(**components)
sd_pipe.enable_sequential_cpu_offload()
pipes.append(sd_pipe)
image_slices = []
for pipe in pipes:
inputs = self.get_dummy_inputs(torch_device)
image = pipe(**inputs).images
image_slices.append(image[0, -3:, -3:, -1].flatten())
assert np.abs(image_slices[0] - image_slices[1]).max() < 1e-3
assert np.abs(image_slices[0] - image_slices[2]).max() < 1e-3
def test_dict_tuple_outputs_equivalent(self):
super().test_dict_tuple_outputs_equivalent(expected_max_difference=5e-4)
@slow
@require_torch_gpu
class KandinskyImg2ImgPipelineIntegrationTests(unittest.TestCase):
def tearDown(self):
# clean up the VRAM after each test
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_kandinsky_img2img(self):
expected_image = load_numpy(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/kandinsky/kandinsky_img2img_frog.npy"
)
init_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main" "/kandinsky/cat.png"
)
prompt = "A red cartoon frog, 4k"
pipe_prior = KandinskyPriorPipeline.from_pretrained(
"kandinsky-community/kandinsky-2-1-prior", torch_dtype=torch.float16
)
pipe_prior.to(torch_device)
pipeline = KandinskyImg2ImgPipeline.from_pretrained(
"kandinsky-community/kandinsky-2-1", torch_dtype=torch.float16
)
pipeline = pipeline.to(torch_device)
pipeline.set_progress_bar_config(disable=None)
generator = torch.Generator(device="cpu").manual_seed(0)
image_emb, zero_image_emb = pipe_prior(
prompt,
generator=generator,
num_inference_steps=5,
negative_prompt="",
).to_tuple()
output = pipeline(
prompt,
image=init_image,
image_embeds=image_emb,
negative_image_embeds=zero_image_emb,
generator=generator,
num_inference_steps=100,
height=768,
width=768,
strength=0.2,
output_type="np",
)
image = output.images[0]
assert image.shape == (768, 768, 3)
assert_mean_pixel_difference(image, expected_image)
@nightly
@require_torch_gpu
class KandinskyImg2ImgPipelineNightlyTests(unittest.TestCase):
def tearDown(self):
# clean up the VRAM after each test
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_kandinsky_img2img_ddpm(self):
expected_image = load_numpy(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main"
"/kandinsky/kandinsky_img2img_ddpm_frog.npy"
)
init_image = load_image(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main" "/kandinsky/frog.png"
)
prompt = "A red cartoon frog, 4k"
pipe_prior = KandinskyPriorPipeline.from_pretrained(
"kandinsky-community/kandinsky-2-1-prior", torch_dtype=torch.float16
)
pipe_prior.to(torch_device)
scheduler = DDPMScheduler.from_pretrained("kandinsky-community/kandinsky-2-1", subfolder="ddpm_scheduler")
pipeline = KandinskyImg2ImgPipeline.from_pretrained(
"kandinsky-community/kandinsky-2-1", scheduler=scheduler, torch_dtype=torch.float16
)
pipeline = pipeline.to(torch_device)
pipeline.set_progress_bar_config(disable=None)
generator = torch.Generator(device="cpu").manual_seed(0)
image_emb, zero_image_emb = pipe_prior(
prompt,
generator=generator,
num_inference_steps=5,
negative_prompt="",
).to_tuple()
output = pipeline(
prompt,
image=init_image,
image_embeds=image_emb,
negative_image_embeds=zero_image_emb,
generator=generator,
num_inference_steps=100,
height=768,
width=768,
strength=0.2,
output_type="np",
)
image = output.images[0]
assert image.shape == (768, 768, 3)
assert_mean_pixel_difference(image, expected_image)
| diffusers/tests/pipelines/kandinsky/test_kandinsky_img2img.py/0 | {
"file_path": "diffusers/tests/pipelines/kandinsky/test_kandinsky_img2img.py",
"repo_id": "diffusers",
"token_count": 6298
} | 144 |
import gc
import inspect
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
LatentConsistencyModelPipeline,
LCMScheduler,
UNet2DConditionModel,
)
from diffusers.utils.testing_utils import (
enable_full_determinism,
require_torch_gpu,
slow,
torch_device,
)
from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
from ..test_pipelines_common import PipelineLatentTesterMixin, PipelineTesterMixin
enable_full_determinism()
class LatentConsistencyModelPipelineFastTests(PipelineLatentTesterMixin, PipelineTesterMixin, unittest.TestCase):
pipeline_class = LatentConsistencyModelPipeline
params = TEXT_TO_IMAGE_PARAMS - {"negative_prompt", "negative_prompt_embeds"}
batch_params = TEXT_TO_IMAGE_BATCH_PARAMS - {"negative_prompt"}
image_params = TEXT_TO_IMAGE_IMAGE_PARAMS
image_latents_params = TEXT_TO_IMAGE_IMAGE_PARAMS
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(4, 8),
layers_per_block=1,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
norm_num_groups=2,
time_cond_proj_dim=32,
)
scheduler = LCMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
clip_sample=False,
set_alpha_to_one=False,
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[4, 8],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
norm_num_groups=2,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=64,
layer_norm_eps=1e-05,
num_attention_heads=8,
num_hidden_layers=3,
pad_token_id=1,
vocab_size=1000,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"safety_checker": None,
"feature_extractor": None,
"image_encoder": None,
"requires_safety_checker": False,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "A painting of a squirrel eating a burger",
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
"output_type": "np",
}
return inputs
def test_lcm_onestep(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
pipe = LatentConsistencyModelPipeline(**components)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
inputs["num_inference_steps"] = 1
output = pipe(**inputs)
image = output.images
assert image.shape == (1, 64, 64, 3)
image_slice = image[0, -3:, -3:, -1]
expected_slice = np.array([0.1441, 0.5304, 0.5452, 0.1361, 0.4011, 0.4370, 0.5326, 0.3492, 0.3637])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-3
def test_lcm_multistep(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
pipe = LatentConsistencyModelPipeline(**components)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
output = pipe(**inputs)
image = output.images
assert image.shape == (1, 64, 64, 3)
image_slice = image[0, -3:, -3:, -1]
expected_slice = np.array([0.1403, 0.5072, 0.5316, 0.1202, 0.3865, 0.4211, 0.5363, 0.3557, 0.3645])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-3
def test_lcm_custom_timesteps(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
pipe = LatentConsistencyModelPipeline(**components)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
del inputs["num_inference_steps"]
inputs["timesteps"] = [999, 499]
output = pipe(**inputs)
image = output.images
assert image.shape == (1, 64, 64, 3)
image_slice = image[0, -3:, -3:, -1]
expected_slice = np.array([0.1403, 0.5072, 0.5316, 0.1202, 0.3865, 0.4211, 0.5363, 0.3557, 0.3645])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-3
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(expected_max_diff=5e-4)
# skip because lcm pipeline apply cfg differently
def test_callback_cfg(self):
pass
# override default test because the final latent variable is "denoised" instead of "latents"
def test_callback_inputs(self):
sig = inspect.signature(self.pipeline_class.__call__)
if not ("callback_on_step_end_tensor_inputs" in sig.parameters and "callback_on_step_end" in sig.parameters):
return
components = self.get_dummy_components()
pipe = self.pipeline_class(**components)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
self.assertTrue(
hasattr(pipe, "_callback_tensor_inputs"),
f" {self.pipeline_class} should have `_callback_tensor_inputs` that defines a list of tensor variables its callback function can use as inputs",
)
def callback_inputs_test(pipe, i, t, callback_kwargs):
missing_callback_inputs = set()
for v in pipe._callback_tensor_inputs:
if v not in callback_kwargs:
missing_callback_inputs.add(v)
self.assertTrue(
len(missing_callback_inputs) == 0, f"Missing callback tensor inputs: {missing_callback_inputs}"
)
last_i = pipe.num_timesteps - 1
if i == last_i:
callback_kwargs["denoised"] = torch.zeros_like(callback_kwargs["denoised"])
return callback_kwargs
inputs = self.get_dummy_inputs(torch_device)
inputs["callback_on_step_end"] = callback_inputs_test
inputs["callback_on_step_end_tensor_inputs"] = pipe._callback_tensor_inputs
inputs["output_type"] = "latent"
output = pipe(**inputs)[0]
assert output.abs().sum() == 0
@slow
@require_torch_gpu
class LatentConsistencyModelPipelineSlowTests(unittest.TestCase):
def setUp(self):
gc.collect()
torch.cuda.empty_cache()
def get_inputs(self, device, generator_device="cpu", dtype=torch.float32, seed=0):
generator = torch.Generator(device=generator_device).manual_seed(seed)
latents = np.random.RandomState(seed).standard_normal((1, 4, 64, 64))
latents = torch.from_numpy(latents).to(device=device, dtype=dtype)
inputs = {
"prompt": "a photograph of an astronaut riding a horse",
"latents": latents,
"generator": generator,
"num_inference_steps": 3,
"guidance_scale": 7.5,
"output_type": "np",
}
return inputs
def test_lcm_onestep(self):
pipe = LatentConsistencyModelPipeline.from_pretrained("SimianLuo/LCM_Dreamshaper_v7", safety_checker=None)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_inputs(torch_device)
inputs["num_inference_steps"] = 1
image = pipe(**inputs).images
assert image.shape == (1, 512, 512, 3)
image_slice = image[0, -3:, -3:, -1].flatten()
expected_slice = np.array([0.1025, 0.0911, 0.0984, 0.0981, 0.0901, 0.0918, 0.1055, 0.0940, 0.0730])
assert np.abs(image_slice - expected_slice).max() < 1e-3
def test_lcm_multistep(self):
pipe = LatentConsistencyModelPipeline.from_pretrained("SimianLuo/LCM_Dreamshaper_v7", safety_checker=None)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_inputs(torch_device)
image = pipe(**inputs).images
assert image.shape == (1, 512, 512, 3)
image_slice = image[0, -3:, -3:, -1].flatten()
expected_slice = np.array([0.01855, 0.01855, 0.01489, 0.01392, 0.01782, 0.01465, 0.01831, 0.02539, 0.0])
assert np.abs(image_slice - expected_slice).max() < 1e-3
| diffusers/tests/pipelines/latent_consistency_models/test_latent_consistency_models.py/0 | {
"file_path": "diffusers/tests/pipelines/latent_consistency_models/test_latent_consistency_models.py",
"repo_id": "diffusers",
"token_count": 4610
} | 145 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTokenizer
from diffusers import (
AutoencoderKL,
DDIMScheduler,
StableDiffusionAttendAndExcitePipeline,
UNet2DConditionModel,
)
from diffusers.utils.testing_utils import (
load_numpy,
nightly,
numpy_cosine_similarity_distance,
require_torch_gpu,
skip_mps,
)
from ..pipeline_params import TEXT_TO_IMAGE_BATCH_PARAMS, TEXT_TO_IMAGE_IMAGE_PARAMS, TEXT_TO_IMAGE_PARAMS
from ..test_pipelines_common import PipelineKarrasSchedulerTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
torch.backends.cuda.matmul.allow_tf32 = False
@skip_mps
class StableDiffusionAttendAndExcitePipelineFastTests(
PipelineLatentTesterMixin, PipelineKarrasSchedulerTesterMixin, PipelineTesterMixin, unittest.TestCase
):
pipeline_class = StableDiffusionAttendAndExcitePipeline
test_attention_slicing = False
params = TEXT_TO_IMAGE_PARAMS
batch_params = TEXT_TO_IMAGE_BATCH_PARAMS.union({"token_indices"})
image_params = TEXT_TO_IMAGE_IMAGE_PARAMS
image_latents_params = TEXT_TO_IMAGE_IMAGE_PARAMS
# Attend and excite requires being able to run a backward pass at
# inference time. There's no deterministic backward operator for pad
@classmethod
def setUpClass(cls):
super().setUpClass()
torch.use_deterministic_algorithms(False)
@classmethod
def tearDownClass(cls):
super().tearDownClass()
torch.use_deterministic_algorithms(True)
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=1,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
# SD2-specific config below
attention_head_dim=(2, 4),
use_linear_projection=True,
)
scheduler = DDIMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
clip_sample=False,
set_alpha_to_one=False,
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
sample_size=128,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
# SD2-specific config below
hidden_act="gelu",
projection_dim=512,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"safety_checker": None,
"feature_extractor": None,
}
return components
def get_dummy_inputs(self, device, seed=0):
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = inputs = {
"prompt": "a cat and a frog",
"token_indices": [2, 5],
"generator": generator,
"num_inference_steps": 1,
"guidance_scale": 6.0,
"output_type": "numpy",
"max_iter_to_alter": 2,
"thresholds": {0: 0.7},
}
return inputs
def test_inference(self):
device = "cpu"
components = self.get_dummy_components()
pipe = self.pipeline_class(**components)
pipe.to(device)
pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
self.assertEqual(image.shape, (1, 64, 64, 3))
expected_slice = np.array(
[0.63905364, 0.62897307, 0.48599017, 0.5133624, 0.5550048, 0.45769516, 0.50326973, 0.5023139, 0.45384496]
)
max_diff = np.abs(image_slice.flatten() - expected_slice).max()
self.assertLessEqual(max_diff, 1e-3)
def test_sequential_cpu_offload_forward_pass(self):
super().test_sequential_cpu_offload_forward_pass(expected_max_diff=5e-4)
def test_inference_batch_consistent(self):
# NOTE: Larger batch sizes cause this test to timeout, only test on smaller batches
self._test_inference_batch_consistent(batch_sizes=[1, 2])
def test_inference_batch_single_identical(self):
self._test_inference_batch_single_identical(batch_size=2, expected_max_diff=7e-4)
def test_dict_tuple_outputs_equivalent(self):
super().test_dict_tuple_outputs_equivalent(expected_max_difference=3e-3)
def test_pt_np_pil_outputs_equivalent(self):
super().test_pt_np_pil_outputs_equivalent(expected_max_diff=5e-4)
def test_save_load_local(self):
super().test_save_load_local(expected_max_difference=5e-4)
def test_save_load_optional_components(self):
super().test_save_load_optional_components(expected_max_difference=4e-4)
@require_torch_gpu
@nightly
class StableDiffusionAttendAndExcitePipelineIntegrationTests(unittest.TestCase):
# Attend and excite requires being able to run a backward pass at
# inference time. There's no deterministic backward operator for pad
@classmethod
def setUpClass(cls):
super().setUpClass()
torch.use_deterministic_algorithms(False)
@classmethod
def tearDownClass(cls):
super().tearDownClass()
torch.use_deterministic_algorithms(True)
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def test_attend_and_excite_fp16(self):
generator = torch.manual_seed(51)
pipe = StableDiffusionAttendAndExcitePipeline.from_pretrained(
"CompVis/stable-diffusion-v1-4", safety_checker=None, torch_dtype=torch.float16
)
pipe.to("cuda")
prompt = "a painting of an elephant with glasses"
token_indices = [5, 7]
image = pipe(
prompt=prompt,
token_indices=token_indices,
guidance_scale=7.5,
generator=generator,
num_inference_steps=5,
max_iter_to_alter=5,
output_type="numpy",
).images[0]
expected_image = load_numpy(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/attend-and-excite/elephant_glasses.npy"
)
max_diff = numpy_cosine_similarity_distance(image.flatten(), expected_image.flatten())
assert max_diff < 5e-1
| diffusers/tests/pipelines/stable_diffusion_2/test_stable_diffusion_attend_and_excite.py/0 | {
"file_path": "diffusers/tests/pipelines/stable_diffusion_2/test_stable_diffusion_attend_and_excite.py",
"repo_id": "diffusers",
"token_count": 3674
} | 146 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import gc
import random
import unittest
import numpy as np
import torch
from PIL import Image
from transformers import CLIPImageProcessor, CLIPVisionConfig, CLIPVisionModelWithProjection
from diffusers import (
AutoencoderKL,
DPMSolverMultistepScheduler,
PNDMScheduler,
StableDiffusionImageVariationPipeline,
UNet2DConditionModel,
)
from diffusers.utils.testing_utils import (
enable_full_determinism,
floats_tensor,
load_image,
load_numpy,
nightly,
numpy_cosine_similarity_distance,
require_torch_gpu,
slow,
torch_device,
)
from ..pipeline_params import IMAGE_VARIATION_BATCH_PARAMS, IMAGE_VARIATION_PARAMS
from ..test_pipelines_common import PipelineKarrasSchedulerTesterMixin, PipelineLatentTesterMixin, PipelineTesterMixin
enable_full_determinism()
class StableDiffusionImageVariationPipelineFastTests(
PipelineLatentTesterMixin, PipelineKarrasSchedulerTesterMixin, PipelineTesterMixin, unittest.TestCase
):
pipeline_class = StableDiffusionImageVariationPipeline
params = IMAGE_VARIATION_PARAMS
batch_params = IMAGE_VARIATION_BATCH_PARAMS
image_params = frozenset([])
# TO-DO: update image_params once pipeline is refactored with VaeImageProcessor.preprocess
image_latents_params = frozenset([])
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=2,
sample_size=32,
in_channels=4,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
cross_attention_dim=32,
)
scheduler = PNDMScheduler(skip_prk_steps=True)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
)
torch.manual_seed(0)
image_encoder_config = CLIPVisionConfig(
hidden_size=32,
projection_dim=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
image_size=32,
patch_size=4,
)
image_encoder = CLIPVisionModelWithProjection(image_encoder_config)
feature_extractor = CLIPImageProcessor(crop_size=32, size=32)
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"image_encoder": image_encoder,
"feature_extractor": feature_extractor,
"safety_checker": None,
}
return components
def get_dummy_inputs(self, device, seed=0):
image = floats_tensor((1, 3, 32, 32), rng=random.Random(seed))
image = image.cpu().permute(0, 2, 3, 1)[0]
image = Image.fromarray(np.uint8(image)).convert("RGB").resize((32, 32))
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"image": image,
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
"output_type": "numpy",
}
return inputs
def test_stable_diffusion_img_variation_default_case(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionImageVariationPipeline(**components)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1]
assert image.shape == (1, 64, 64, 3)
expected_slice = np.array([0.5239, 0.5723, 0.4796, 0.5049, 0.5550, 0.4685, 0.5329, 0.4891, 0.4921])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-3
def test_stable_diffusion_img_variation_multiple_images(self):
device = "cpu" # ensure determinism for the device-dependent torch.Generator
components = self.get_dummy_components()
sd_pipe = StableDiffusionImageVariationPipeline(**components)
sd_pipe = sd_pipe.to(device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_dummy_inputs(device)
inputs["image"] = 2 * [inputs["image"]]
output = sd_pipe(**inputs)
image = output.images
image_slice = image[-1, -3:, -3:, -1]
assert image.shape == (2, 64, 64, 3)
expected_slice = np.array([0.6892, 0.5637, 0.5836, 0.5771, 0.6254, 0.6409, 0.5580, 0.5569, 0.5289])
assert np.abs(image_slice.flatten() - expected_slice).max() < 1e-3
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(expected_max_diff=3e-3)
@slow
@require_torch_gpu
class StableDiffusionImageVariationPipelineSlowTests(unittest.TestCase):
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def get_inputs(self, device, generator_device="cpu", dtype=torch.float32, seed=0):
generator = torch.Generator(device=generator_device).manual_seed(seed)
init_image = load_image(
"https://huggingface.co/datasets/diffusers/test-arrays/resolve/main"
"/stable_diffusion_imgvar/input_image_vermeer.png"
)
latents = np.random.RandomState(seed).standard_normal((1, 4, 64, 64))
latents = torch.from_numpy(latents).to(device=device, dtype=dtype)
inputs = {
"image": init_image,
"latents": latents,
"generator": generator,
"num_inference_steps": 3,
"guidance_scale": 7.5,
"output_type": "np",
}
return inputs
def test_stable_diffusion_img_variation_pipeline_default(self):
sd_pipe = StableDiffusionImageVariationPipeline.from_pretrained(
"lambdalabs/sd-image-variations-diffusers", safety_checker=None
)
sd_pipe = sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
generator_device = "cpu"
inputs = self.get_inputs(generator_device)
image = sd_pipe(**inputs).images
image_slice = image[0, -3:, -3:, -1].flatten()
assert image.shape == (1, 512, 512, 3)
expected_slice = np.array([0.8449, 0.9079, 0.7571, 0.7873, 0.8348, 0.7010, 0.6694, 0.6873, 0.6138])
max_diff = numpy_cosine_similarity_distance(image_slice, expected_slice)
assert max_diff < 1e-4
def test_stable_diffusion_img_variation_intermediate_state(self):
number_of_steps = 0
def callback_fn(step: int, timestep: int, latents: torch.FloatTensor) -> None:
callback_fn.has_been_called = True
nonlocal number_of_steps
number_of_steps += 1
if step == 1:
latents = latents.detach().cpu().numpy()
assert latents.shape == (1, 4, 64, 64)
latents_slice = latents[0, -3:, -3:, -1]
expected_slice = np.array([-0.7974, -0.4343, -1.087, 0.04785, -1.327, 0.855, -2.148, -0.1725, 1.439])
max_diff = numpy_cosine_similarity_distance(latents_slice.flatten(), expected_slice)
assert max_diff < 1e-3
elif step == 2:
latents = latents.detach().cpu().numpy()
assert latents.shape == (1, 4, 64, 64)
latents_slice = latents[0, -3:, -3:, -1]
expected_slice = np.array([0.3232, 0.004883, 0.913, -1.084, 0.6143, -1.6875, -2.463, -0.439, -0.419])
max_diff = numpy_cosine_similarity_distance(latents_slice.flatten(), expected_slice)
assert max_diff < 1e-3
callback_fn.has_been_called = False
pipe = StableDiffusionImageVariationPipeline.from_pretrained(
"lambdalabs/sd-image-variations-diffusers",
safety_checker=None,
torch_dtype=torch.float16,
)
pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
for component in pipe.components.values():
if hasattr(component, "set_default_attn_processor"):
component.set_default_attn_processor()
generator_device = "cpu"
inputs = self.get_inputs(generator_device, dtype=torch.float16)
pipe(**inputs, callback=callback_fn, callback_steps=1)
assert callback_fn.has_been_called
assert number_of_steps == inputs["num_inference_steps"]
def test_stable_diffusion_pipeline_with_sequential_cpu_offloading(self):
torch.cuda.empty_cache()
torch.cuda.reset_max_memory_allocated()
torch.cuda.reset_peak_memory_stats()
pipe = StableDiffusionImageVariationPipeline.from_pretrained(
"lambdalabs/sd-image-variations-diffusers", safety_checker=None, torch_dtype=torch.float16
)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
pipe.enable_attention_slicing(1)
pipe.enable_sequential_cpu_offload()
inputs = self.get_inputs(torch_device, dtype=torch.float16)
_ = pipe(**inputs)
mem_bytes = torch.cuda.max_memory_allocated()
# make sure that less than 2.6 GB is allocated
assert mem_bytes < 2.6 * 10**9
@nightly
@require_torch_gpu
class StableDiffusionImageVariationPipelineNightlyTests(unittest.TestCase):
def tearDown(self):
super().tearDown()
gc.collect()
torch.cuda.empty_cache()
def get_inputs(self, device, generator_device="cpu", dtype=torch.float32, seed=0):
generator = torch.Generator(device=generator_device).manual_seed(seed)
init_image = load_image(
"https://huggingface.co/datasets/diffusers/test-arrays/resolve/main"
"/stable_diffusion_imgvar/input_image_vermeer.png"
)
latents = np.random.RandomState(seed).standard_normal((1, 4, 64, 64))
latents = torch.from_numpy(latents).to(device=device, dtype=dtype)
inputs = {
"image": init_image,
"latents": latents,
"generator": generator,
"num_inference_steps": 50,
"guidance_scale": 7.5,
"output_type": "numpy",
}
return inputs
def test_img_variation_pndm(self):
sd_pipe = StableDiffusionImageVariationPipeline.from_pretrained("fusing/sd-image-variations-diffusers")
sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_inputs(torch_device)
image = sd_pipe(**inputs).images[0]
expected_image = load_numpy(
"https://huggingface.co/datasets/diffusers/test-arrays/resolve/main"
"/stable_diffusion_imgvar/lambdalabs_variations_pndm.npy"
)
max_diff = np.abs(expected_image - image).max()
assert max_diff < 1e-3
def test_img_variation_dpm(self):
sd_pipe = StableDiffusionImageVariationPipeline.from_pretrained("fusing/sd-image-variations-diffusers")
sd_pipe.scheduler = DPMSolverMultistepScheduler.from_config(sd_pipe.scheduler.config)
sd_pipe.to(torch_device)
sd_pipe.set_progress_bar_config(disable=None)
inputs = self.get_inputs(torch_device)
inputs["num_inference_steps"] = 25
image = sd_pipe(**inputs).images[0]
expected_image = load_numpy(
"https://huggingface.co/datasets/diffusers/test-arrays/resolve/main"
"/stable_diffusion_imgvar/lambdalabs_variations_dpm_multi.npy"
)
max_diff = np.abs(expected_image - image).max()
assert max_diff < 1e-3
| diffusers/tests/pipelines/stable_diffusion_image_variation/test_stable_diffusion_image_variation.py/0 | {
"file_path": "diffusers/tests/pipelines/stable_diffusion_image_variation/test_stable_diffusion_image_variation.py",
"repo_id": "diffusers",
"token_count": 5832
} | 147 |
# coding=utf-8
# Copyright 2023 Harutatsu Akiyama and HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import random
import unittest
import numpy as np
import torch
from transformers import CLIPTextConfig, CLIPTextModel, CLIPTextModelWithProjection, CLIPTokenizer
from diffusers import (
AutoencoderKL,
EulerDiscreteScheduler,
UNet2DConditionModel,
)
from diffusers.image_processor import VaeImageProcessor
from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl_instruct_pix2pix import (
StableDiffusionXLInstructPix2PixPipeline,
)
from diffusers.utils.testing_utils import enable_full_determinism, floats_tensor, torch_device
from ..pipeline_params import (
IMAGE_TO_IMAGE_IMAGE_PARAMS,
TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS,
TEXT_GUIDED_IMAGE_VARIATION_PARAMS,
)
from ..test_pipelines_common import (
PipelineKarrasSchedulerTesterMixin,
PipelineLatentTesterMixin,
PipelineTesterMixin,
SDXLOptionalComponentsTesterMixin,
)
enable_full_determinism()
class StableDiffusionXLInstructPix2PixPipelineFastTests(
PipelineLatentTesterMixin,
PipelineKarrasSchedulerTesterMixin,
PipelineTesterMixin,
SDXLOptionalComponentsTesterMixin,
unittest.TestCase,
):
pipeline_class = StableDiffusionXLInstructPix2PixPipeline
params = TEXT_GUIDED_IMAGE_VARIATION_PARAMS - {"height", "width", "cross_attention_kwargs"}
batch_params = TEXT_GUIDED_IMAGE_INPAINTING_BATCH_PARAMS
image_params = IMAGE_TO_IMAGE_IMAGE_PARAMS
image_latents_params = IMAGE_TO_IMAGE_IMAGE_PARAMS
def get_dummy_components(self):
torch.manual_seed(0)
unet = UNet2DConditionModel(
block_out_channels=(32, 64),
layers_per_block=2,
sample_size=32,
in_channels=8,
out_channels=4,
down_block_types=("DownBlock2D", "CrossAttnDownBlock2D"),
up_block_types=("CrossAttnUpBlock2D", "UpBlock2D"),
# SD2-specific config below
attention_head_dim=(2, 4),
use_linear_projection=True,
addition_embed_type="text_time",
addition_time_embed_dim=8,
transformer_layers_per_block=(1, 2),
projection_class_embeddings_input_dim=80, # 5 * 8 + 32
cross_attention_dim=64,
)
scheduler = EulerDiscreteScheduler(
beta_start=0.00085,
beta_end=0.012,
steps_offset=1,
beta_schedule="scaled_linear",
timestep_spacing="leading",
)
torch.manual_seed(0)
vae = AutoencoderKL(
block_out_channels=[32, 64],
in_channels=3,
out_channels=3,
down_block_types=["DownEncoderBlock2D", "DownEncoderBlock2D"],
up_block_types=["UpDecoderBlock2D", "UpDecoderBlock2D"],
latent_channels=4,
sample_size=128,
)
torch.manual_seed(0)
text_encoder_config = CLIPTextConfig(
bos_token_id=0,
eos_token_id=2,
hidden_size=32,
intermediate_size=37,
layer_norm_eps=1e-05,
num_attention_heads=4,
num_hidden_layers=5,
pad_token_id=1,
vocab_size=1000,
# SD2-specific config below
hidden_act="gelu",
projection_dim=32,
)
text_encoder = CLIPTextModel(text_encoder_config)
tokenizer = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
text_encoder_2 = CLIPTextModelWithProjection(text_encoder_config)
tokenizer_2 = CLIPTokenizer.from_pretrained("hf-internal-testing/tiny-random-clip")
components = {
"unet": unet,
"scheduler": scheduler,
"vae": vae,
"text_encoder": text_encoder,
"tokenizer": tokenizer,
"text_encoder_2": text_encoder_2,
"tokenizer_2": tokenizer_2,
}
return components
def get_dummy_inputs(self, device, seed=0):
image = floats_tensor((1, 3, 64, 64), rng=random.Random(seed)).to(device)
image = image / 2 + 0.5
if str(device).startswith("mps"):
generator = torch.manual_seed(seed)
else:
generator = torch.Generator(device=device).manual_seed(seed)
inputs = {
"prompt": "A painting of a squirrel eating a burger",
"image": image,
"generator": generator,
"num_inference_steps": 2,
"guidance_scale": 6.0,
"image_guidance_scale": 1,
"output_type": "numpy",
}
return inputs
def test_components_function(self):
init_components = self.get_dummy_components()
pipe = self.pipeline_class(**init_components)
self.assertTrue(hasattr(pipe, "components"))
self.assertTrue(set(pipe.components.keys()) == set(init_components.keys()))
def test_inference_batch_single_identical(self):
super().test_inference_batch_single_identical(expected_max_diff=3e-3)
def test_attention_slicing_forward_pass(self):
super().test_attention_slicing_forward_pass(expected_max_diff=2e-3)
# Overwrite the default test_latents_inputs because pix2pix encode the image differently
def test_latents_input(self):
components = self.get_dummy_components()
pipe = StableDiffusionXLInstructPix2PixPipeline(**components)
pipe.image_processor = VaeImageProcessor(do_resize=False, do_normalize=False)
pipe = pipe.to(torch_device)
pipe.set_progress_bar_config(disable=None)
out = pipe(**self.get_dummy_inputs_by_type(torch_device, input_image_type="pt"))[0]
vae = components["vae"]
inputs = self.get_dummy_inputs_by_type(torch_device, input_image_type="pt")
for image_param in self.image_latents_params:
if image_param in inputs.keys():
inputs[image_param] = vae.encode(inputs[image_param]).latent_dist.mode()
out_latents_inputs = pipe(**inputs)[0]
max_diff = np.abs(out - out_latents_inputs).max()
self.assertLess(max_diff, 1e-4, "passing latents as image input generate different result from passing image")
def test_cfg(self):
pass
def test_save_load_optional_components(self):
self._test_save_load_optional_components()
| diffusers/tests/pipelines/stable_diffusion_xl/test_stable_diffusion_xl_instruction_pix2pix.py/0 | {
"file_path": "diffusers/tests/pipelines/stable_diffusion_xl/test_stable_diffusion_xl_instruction_pix2pix.py",
"repo_id": "diffusers",
"token_count": 3115
} | 148 |
# coding=utf-8
# Copyright 2023 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import torch
from diffusers import DDIMScheduler, TextToVideoZeroPipeline
from diffusers.utils.testing_utils import load_pt, nightly, require_torch_gpu
from ..test_pipelines_common import assert_mean_pixel_difference
@nightly
@require_torch_gpu
class TextToVideoZeroPipelineSlowTests(unittest.TestCase):
def test_full_model(self):
model_id = "runwayml/stable-diffusion-v1-5"
pipe = TextToVideoZeroPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
pipe.scheduler = DDIMScheduler.from_config(pipe.scheduler.config)
generator = torch.Generator(device="cuda").manual_seed(0)
prompt = "A bear is playing a guitar on Times Square"
result = pipe(prompt=prompt, generator=generator).images
expected_result = load_pt(
"https://huggingface.co/datasets/hf-internal-testing/diffusers-images/resolve/main/text-to-video/A bear is playing a guitar on Times Square.pt"
)
assert_mean_pixel_difference(result, expected_result)
| diffusers/tests/pipelines/text_to_video_synthesis/test_text_to_video_zero.py/0 | {
"file_path": "diffusers/tests/pipelines/text_to_video_synthesis/test_text_to_video_zero.py",
"repo_id": "diffusers",
"token_count": 560
} | 149 |
# Copyright 2023 ParaDiGMS authors and The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import torch
from diffusers import DDIMParallelScheduler
from .test_schedulers import SchedulerCommonTest
class DDIMParallelSchedulerTest(SchedulerCommonTest):
scheduler_classes = (DDIMParallelScheduler,)
forward_default_kwargs = (("eta", 0.0), ("num_inference_steps", 50))
def get_scheduler_config(self, **kwargs):
config = {
"num_train_timesteps": 1000,
"beta_start": 0.0001,
"beta_end": 0.02,
"beta_schedule": "linear",
"clip_sample": True,
}
config.update(**kwargs)
return config
def full_loop(self, **config):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(**config)
scheduler = scheduler_class(**scheduler_config)
num_inference_steps, eta = 10, 0.0
model = self.dummy_model()
sample = self.dummy_sample_deter
scheduler.set_timesteps(num_inference_steps)
for t in scheduler.timesteps:
residual = model(sample, t)
sample = scheduler.step(residual, t, sample, eta).prev_sample
return sample
def test_timesteps(self):
for timesteps in [100, 500, 1000]:
self.check_over_configs(num_train_timesteps=timesteps)
def test_steps_offset(self):
for steps_offset in [0, 1]:
self.check_over_configs(steps_offset=steps_offset)
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(steps_offset=1)
scheduler = scheduler_class(**scheduler_config)
scheduler.set_timesteps(5)
assert torch.equal(scheduler.timesteps, torch.LongTensor([801, 601, 401, 201, 1]))
def test_betas(self):
for beta_start, beta_end in zip([0.0001, 0.001, 0.01, 0.1], [0.002, 0.02, 0.2, 2]):
self.check_over_configs(beta_start=beta_start, beta_end=beta_end)
def test_schedules(self):
for schedule in ["linear", "squaredcos_cap_v2"]:
self.check_over_configs(beta_schedule=schedule)
def test_prediction_type(self):
for prediction_type in ["epsilon", "v_prediction"]:
self.check_over_configs(prediction_type=prediction_type)
def test_clip_sample(self):
for clip_sample in [True, False]:
self.check_over_configs(clip_sample=clip_sample)
def test_timestep_spacing(self):
for timestep_spacing in ["trailing", "leading"]:
self.check_over_configs(timestep_spacing=timestep_spacing)
def test_rescale_betas_zero_snr(self):
for rescale_betas_zero_snr in [True, False]:
self.check_over_configs(rescale_betas_zero_snr=rescale_betas_zero_snr)
def test_thresholding(self):
self.check_over_configs(thresholding=False)
for threshold in [0.5, 1.0, 2.0]:
for prediction_type in ["epsilon", "v_prediction"]:
self.check_over_configs(
thresholding=True,
prediction_type=prediction_type,
sample_max_value=threshold,
)
def test_time_indices(self):
for t in [1, 10, 49]:
self.check_over_forward(time_step=t)
def test_inference_steps(self):
for t, num_inference_steps in zip([1, 10, 50], [10, 50, 500]):
self.check_over_forward(time_step=t, num_inference_steps=num_inference_steps)
def test_eta(self):
for t, eta in zip([1, 10, 49], [0.0, 0.5, 1.0]):
self.check_over_forward(time_step=t, eta=eta)
def test_variance(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
assert torch.sum(torch.abs(scheduler._get_variance(0, 0) - 0.0)) < 1e-5
assert torch.sum(torch.abs(scheduler._get_variance(420, 400) - 0.14771)) < 1e-5
assert torch.sum(torch.abs(scheduler._get_variance(980, 960) - 0.32460)) < 1e-5
assert torch.sum(torch.abs(scheduler._get_variance(0, 0) - 0.0)) < 1e-5
assert torch.sum(torch.abs(scheduler._get_variance(487, 486) - 0.00979)) < 1e-5
assert torch.sum(torch.abs(scheduler._get_variance(999, 998) - 0.02)) < 1e-5
def test_batch_step_no_noise(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
num_inference_steps, eta = 10, 0.0
scheduler.set_timesteps(num_inference_steps)
model = self.dummy_model()
sample1 = self.dummy_sample_deter
sample2 = self.dummy_sample_deter + 0.1
sample3 = self.dummy_sample_deter - 0.1
per_sample_batch = sample1.shape[0]
samples = torch.stack([sample1, sample2, sample3], dim=0)
timesteps = torch.arange(num_inference_steps)[0:3, None].repeat(1, per_sample_batch)
residual = model(samples.flatten(0, 1), timesteps.flatten(0, 1))
pred_prev_sample = scheduler.batch_step_no_noise(residual, timesteps.flatten(0, 1), samples.flatten(0, 1), eta)
result_sum = torch.sum(torch.abs(pred_prev_sample))
result_mean = torch.mean(torch.abs(pred_prev_sample))
assert abs(result_sum.item() - 1147.7904) < 1e-2
assert abs(result_mean.item() - 0.4982) < 1e-3
def test_full_loop_no_noise(self):
sample = self.full_loop()
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 172.0067) < 1e-2
assert abs(result_mean.item() - 0.223967) < 1e-3
def test_full_loop_with_v_prediction(self):
sample = self.full_loop(prediction_type="v_prediction")
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 52.5302) < 1e-2
assert abs(result_mean.item() - 0.0684) < 1e-3
def test_full_loop_with_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=True, beta_start=0.01)
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 149.8295) < 1e-2
assert abs(result_mean.item() - 0.1951) < 1e-3
def test_full_loop_with_no_set_alpha_to_one(self):
# We specify different beta, so that the first alpha is 0.99
sample = self.full_loop(set_alpha_to_one=False, beta_start=0.01)
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 149.0784) < 1e-2
assert abs(result_mean.item() - 0.1941) < 1e-3
def test_full_loop_with_noise(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
num_inference_steps, eta = 10, 0.0
t_start = 8
model = self.dummy_model()
sample = self.dummy_sample_deter
scheduler.set_timesteps(num_inference_steps)
# add noise
noise = self.dummy_noise_deter
timesteps = scheduler.timesteps[t_start * scheduler.order :]
sample = scheduler.add_noise(sample, noise, timesteps[:1])
for t in timesteps:
residual = model(sample, t)
sample = scheduler.step(residual, t, sample, eta).prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 354.5418) < 1e-2, f" expected result sum 354.5418, but get {result_sum}"
assert abs(result_mean.item() - 0.4616) < 1e-3, f" expected result mean 0.4616, but get {result_mean}"
| diffusers/tests/schedulers/test_scheduler_ddim_parallel.py/0 | {
"file_path": "diffusers/tests/schedulers/test_scheduler_ddim_parallel.py",
"repo_id": "diffusers",
"token_count": 3802
} | 150 |
import torch
from diffusers import LMSDiscreteScheduler
from diffusers.utils.testing_utils import torch_device
from .test_schedulers import SchedulerCommonTest
class LMSDiscreteSchedulerTest(SchedulerCommonTest):
scheduler_classes = (LMSDiscreteScheduler,)
num_inference_steps = 10
def get_scheduler_config(self, **kwargs):
config = {
"num_train_timesteps": 1100,
"beta_start": 0.0001,
"beta_end": 0.02,
"beta_schedule": "linear",
}
config.update(**kwargs)
return config
def test_timesteps(self):
for timesteps in [10, 50, 100, 1000]:
self.check_over_configs(num_train_timesteps=timesteps)
def test_betas(self):
for beta_start, beta_end in zip([0.00001, 0.0001, 0.001], [0.0002, 0.002, 0.02]):
self.check_over_configs(beta_start=beta_start, beta_end=beta_end)
def test_schedules(self):
for schedule in ["linear", "scaled_linear"]:
self.check_over_configs(beta_schedule=schedule)
def test_prediction_type(self):
for prediction_type in ["epsilon", "v_prediction"]:
self.check_over_configs(prediction_type=prediction_type)
def test_time_indices(self):
for t in [0, 500, 800]:
self.check_over_forward(time_step=t)
def test_full_loop_no_noise(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
scheduler.set_timesteps(self.num_inference_steps)
model = self.dummy_model()
sample = self.dummy_sample_deter * scheduler.init_noise_sigma
for i, t in enumerate(scheduler.timesteps):
sample = scheduler.scale_model_input(sample, t)
model_output = model(sample, t)
output = scheduler.step(model_output, t, sample)
sample = output.prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 1006.388) < 1e-2
assert abs(result_mean.item() - 1.31) < 1e-3
def test_full_loop_with_v_prediction(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config(prediction_type="v_prediction")
scheduler = scheduler_class(**scheduler_config)
scheduler.set_timesteps(self.num_inference_steps)
model = self.dummy_model()
sample = self.dummy_sample_deter * scheduler.init_noise_sigma
for i, t in enumerate(scheduler.timesteps):
sample = scheduler.scale_model_input(sample, t)
model_output = model(sample, t)
output = scheduler.step(model_output, t, sample)
sample = output.prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 0.0017) < 1e-2
assert abs(result_mean.item() - 2.2676e-06) < 1e-3
def test_full_loop_device(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
scheduler.set_timesteps(self.num_inference_steps, device=torch_device)
model = self.dummy_model()
sample = self.dummy_sample_deter * scheduler.init_noise_sigma.cpu()
sample = sample.to(torch_device)
for i, t in enumerate(scheduler.timesteps):
sample = scheduler.scale_model_input(sample, t)
model_output = model(sample, t)
output = scheduler.step(model_output, t, sample)
sample = output.prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 1006.388) < 1e-2
assert abs(result_mean.item() - 1.31) < 1e-3
def test_full_loop_device_karras_sigmas(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config, use_karras_sigmas=True)
scheduler.set_timesteps(self.num_inference_steps, device=torch_device)
model = self.dummy_model()
sample = self.dummy_sample_deter.to(torch_device) * scheduler.init_noise_sigma
sample = sample.to(torch_device)
for t in scheduler.timesteps:
sample = scheduler.scale_model_input(sample, t)
model_output = model(sample, t)
output = scheduler.step(model_output, t, sample)
sample = output.prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 3812.9927) < 2e-2
assert abs(result_mean.item() - 4.9648) < 1e-3
def test_full_loop_with_noise(self):
scheduler_class = self.scheduler_classes[0]
scheduler_config = self.get_scheduler_config()
scheduler = scheduler_class(**scheduler_config)
scheduler.set_timesteps(self.num_inference_steps)
model = self.dummy_model()
sample = self.dummy_sample_deter * scheduler.init_noise_sigma
# add noise
t_start = self.num_inference_steps - 2
noise = self.dummy_noise_deter
timesteps = scheduler.timesteps[t_start * scheduler.order :]
sample = scheduler.add_noise(sample, noise, timesteps[:1])
for i, t in enumerate(timesteps):
sample = scheduler.scale_model_input(sample, t)
model_output = model(sample, t)
output = scheduler.step(model_output, t, sample)
sample = output.prev_sample
result_sum = torch.sum(torch.abs(sample))
result_mean = torch.mean(torch.abs(sample))
assert abs(result_sum.item() - 27663.6895) < 1e-2
assert abs(result_mean.item() - 36.0204) < 1e-3
| diffusers/tests/schedulers/test_scheduler_lms.py/0 | {
"file_path": "diffusers/tests/schedulers/test_scheduler_lms.py",
"repo_id": "diffusers",
"token_count": 2696
} | 151 |
import json
import logging
import os
from collections import defaultdict
from pathlib import Path
from huggingface_hub import HfApi, ModelFilter
import diffusers
PATH_TO_REPO = Path(__file__).parent.parent.resolve()
ALWAYS_TEST_PIPELINE_MODULES = [
"controlnet",
"stable_diffusion",
"stable_diffusion_2",
"stable_diffusion_xl",
"stable_diffusion_adapter",
"deepfloyd_if",
"ip_adapters",
"kandinsky",
"kandinsky2_2",
"text_to_video_synthesis",
"wuerstchen",
]
PIPELINE_USAGE_CUTOFF = int(os.getenv("PIPELINE_USAGE_CUTOFF", 50000))
logger = logging.getLogger(__name__)
api = HfApi()
filter = ModelFilter(library="diffusers")
def filter_pipelines(usage_dict, usage_cutoff=10000):
output = []
for diffusers_object, usage in usage_dict.items():
if usage < usage_cutoff:
continue
is_diffusers_pipeline = hasattr(diffusers.pipelines, diffusers_object)
if not is_diffusers_pipeline:
continue
output.append(diffusers_object)
return output
def fetch_pipeline_objects():
models = api.list_models(filter=filter)
downloads = defaultdict(int)
for model in models:
is_counted = False
for tag in model.tags:
if tag.startswith("diffusers:"):
is_counted = True
downloads[tag[len("diffusers:") :]] += model.downloads
if not is_counted:
downloads["other"] += model.downloads
# Remove 0 downloads
downloads = {k: v for k, v in downloads.items() if v > 0}
pipeline_objects = filter_pipelines(downloads, PIPELINE_USAGE_CUTOFF)
return pipeline_objects
def fetch_pipeline_modules_to_test():
try:
pipeline_objects = fetch_pipeline_objects()
except Exception as e:
logger.error(e)
raise RuntimeError("Unable to fetch model list from HuggingFace Hub.")
test_modules = []
for pipeline_name in pipeline_objects:
module = getattr(diffusers, pipeline_name)
test_module = module.__module__.split(".")[-2].strip()
test_modules.append(test_module)
return test_modules
def main():
test_modules = fetch_pipeline_modules_to_test()
test_modules.extend(ALWAYS_TEST_PIPELINE_MODULES)
# Get unique modules
test_modules = list(set(test_modules))
print(json.dumps(test_modules))
save_path = f"{PATH_TO_REPO}/reports"
os.makedirs(save_path, exist_ok=True)
with open(f"{save_path}/test-pipelines.json", "w") as f:
json.dump({"pipeline_test_modules": test_modules}, f)
if __name__ == "__main__":
main()
| diffusers/utils/fetch_torch_cuda_pipeline_test_matrix.py/0 | {
"file_path": "diffusers/utils/fetch_torch_cuda_pipeline_test_matrix.py",
"repo_id": "diffusers",
"token_count": 1082
} | 152 |
# Introduction to 🤗 Diffusers
<CourseFloatingBanner unit={1}
classNames="absolute z-10 right-0 top-0"
notebooks={[
{label: "Introduction to Diffusers", value: "https://colab.research.google.com/github/huggingface/diffusion-models-class/blob/main/units/en/unit1/introduction_to_diffusers.ipynb"},
{label: "Introduction to Diffusers", value: "https://studiolab.sagemaker.aws/import/github/huggingface/diffusion-models-class/blob/main/units/en/unit1/introduction_to_diffusers.ipynb"},
]} />
In this notebook, you'll train your first diffusion model to generate images of cute butterflies 🦋. Along the way, you'll learn about the core components of the 🤗 Diffusers library, which will provide a good foundation for the more advanced applications that we'll cover later in the course.
Let's dive in!
## What You Will Learn
In this notebook you will:
- See a powerful custom diffusion model pipeline in action (with information on how to make your own version)
- Create your own mini pipeline by:
- Recapping the core ideas behind diffusion models
- Loading in data from the Hub for training
- Exploring how we add noise to this data with a scheduler
- Creating and training the UNet model
- Putting the pieces together into a working pipeline
- Edit and run a script for initializing longer training runs, that will handle
- Multi-GPU training via 🤗 Accelerate
- Experiment logging to track critical stats
- Uploading the final model to the Hugging Face Hub
## Setup
Run the following cell to install the diffusers library as well as a few other requirements:
```py
%pip install -qq -U diffusers datasets transformers accelerate ftfy pyarrow==9.0.0
```
Next, head over to https://huggingface.co/settings/tokens and create an access token with write permission if you don't already have one:
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
You can login with this token using the command line (`huggingface-cli login`) or by running the following cell:
```py
from huggingface_hub import notebook_login
notebook_login()
```
Then you need to install Git-LFS to upload your model checkpoints:
```py
%%capture
!sudo apt -qq install git-lfs
!git config --global credential.helper store
```
Finally, let's import the libraries we'll be using and define a few convenience functions which we'll use later in the notebook:
```py
import numpy as np
import torch
import torch.nn.functional as F
from matplotlib import pyplot as plt
from PIL import Image
def show_images(x):
"""Given a batch of images x, make a grid and convert to PIL"""
x = x * 0.5 + 0.5 # Map from (-1, 1) back to (0, 1)
grid = torchvision.utils.make_grid(x)
grid_im = grid.detach().cpu().permute(1, 2, 0).clip(0, 1) * 255
grid_im = Image.fromarray(np.array(grid_im).astype(np.uint8))
return grid_im
def make_grid(images, size=64):
"""Given a list of PIL images, stack them together into a line for easy viewing"""
output_im = Image.new("RGB", (size * len(images), size))
for i, im in enumerate(images):
output_im.paste(im.resize((size, size)), (i * size, 0))
return output_im
# Mac users may need device = 'mps' (untested)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
```
OK, we're all set!
## Dreambooth: A Sneak Peak at What's to Come
If you've looked at AI-related social media at all in the past few months, you've heard about Stable Diffusion. It's a powerful text-conditioned latent diffusion model (don't worry, we'll learn what all that means). But it has a flaw: it doesn't know what you or I look like unless we're famous enough to have our images plastered around the internet.
Dreambooth let's us create our own model variant with some extra knowledge of a specific face, object or style. The Corridor Crew made an excellent video using this to tell stories with consistent characters, which is a great example of what this technique can do:
```
from IPython.display import YouTubeVideo
YouTubeVideo("W4Mcuh38wyM")
```
Here's an example using a model trained on 5 photos of a popular children's toy called "Mr Potato Head".
First, we load the pipeline. This will download model weights etc. from the Hub. Since this will download several gigabytes of data for a one-line demo, you are welcome to skip this cell and simply admire the example output!
```
from diffusers import StableDiffusionPipeline
# Check out https://huggingface.co/sd-dreambooth-library for loads of models from the community
model_id = "sd-dreambooth-library/mr-potato-head"
# Load the pipeline
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to(
device
)
```
Once the pipeline has finished loading, we can generate images with:
```
prompt = "an abstract oil painting of sks mr potato head by picasso"
image = pipe(prompt, num_inference_steps=50, guidance_scale=7.5).images[0]
image
```
Exercise: Try it yourself with different prompts. The `sks` token represents a unique identifier for the novel concept in this case - what happens if you leave that out? You can also experiment with changing the number of sampling steps (how low can you go?) and the `guidance_scale`, which determines how much the model will try to match the prompt.
There's a lot going on in that magical pipeline! By the end of the course you'll know how it all works. For now, let's take a look at how we can train a diffusion model from scratch.
## MVP (Minimum Viable Pipeline)
### Exemple d'inférence sur les papillons
The core API of 🤗 Diffusers is divided into three main components:
Pipelines: high-level classes designed to rapidly generate samples from popular trained diffusion models in a user-friendly fashion.
Models: popular architectures for training new diffusion models, e.g. UNet.
Schedulers: various techniques for generating images from noise during inference as well as to generate noisy images for training.
Pipelines are great for end-users, but if you're here for this course we assume you want to know what is going on under the hood! So, over the rest of this notebook we're going to build our own pipeline capable of generating small butterfly pictures. Here's the final result in action:
```
from diffusers import DDPMPipeline
# Load the butterfly pipeline
butterfly_pipeline = DDPMPipeline.from_pretrained(
"johnowhitaker/ddpm-butterflies-32px"
).to(device)
# Create 8 images
images = butterfly_pipeline(batch_size=8).images
# View the result
make_grid(images)
```
Not as impressive as the DreamBooth example perhaps, but then we're training from scratch with ~0.0001% of the data used to train Stable Diffusion. Speaking of training, recall from the introduction to this unit that training a diffusion model looks something like this:
Load in some images from the training data
Add noise, in different amounts.
Feed the noisy versions of the inputs into the model
Evaluate how well the model does at denoising these inputs
Use this information to update the model weights, and repeat
We'll explore these steps one by one in the next few sections until we have a complete training loop working, and then we'll explore how to sample from the trained model and how to package everything up into a pipeline for easy sharing. Let's begin with the data...
### Download the training dataset
For this example, we'll use a dataset of images from the Hugging Face Hub. Specifically, this collection of 1000 butterfly pictures. This is a very small dataset, so we've also included commented out lines for a few larger options. If you'd prefer to use your own collection of images, you can also use the commented-out code example to load in pictures from a folder instead.
```
import torchvision
from datasets import load_dataset
from torchvision import transforms
dataset = load_dataset("huggan/smithsonian_butterflies_subset", split="train")
# Or load images from a local folder
# dataset = load_dataset("imagefolder", data_dir="path/to/folder")
# We'll train on 32-pixel square images, but you can try larger sizes too
image_size = 32
# You can lower your batch size if you're running out of GPU memory
batch_size = 64
# Define data augmentations
preprocess = transforms.Compose(
[
transforms.Resize((image_size, image_size)), # Resize
transforms.RandomHorizontalFlip(), # Randomly flip (data augmentation)
transforms.ToTensor(), # Convert to tensor (0, 1)
transforms.Normalize([0.5], [0.5]), # Map to (-1, 1)
]
)
def transform(examples):
images = [preprocess(image.convert("RGB")) for image in examples["image"]]
return {"images": images}
dataset.set_transform(transform)
# Create a dataloader from the dataset to serve up the transformed images in batches
train_dataloader = torch.utils.data.DataLoader(
dataset, batch_size=batch_size, shuffle=True
)
```
We can grab a batch of images and view some of them like so:
```
xb = next(iter(train_dataloader))["images"].to(device)[:8]
print("X shape:", xb.shape)
show_images(xb).resize((8 * 64, 64), resample=Image.NEAREST)
```
We're sticking to a small dataset with 32 pixel images to keep training times manageable in this notebook.
## Define the Scheduler
Our plan for training is to take these input images and add noise to them, then feed the noisy images to the model. And during inference, we will use the model predictions to iteratively remove noise. In diffusers, these processes are both handled by the scheduler.
The noise schedule determines how much noise is added at different timesteps. Here's how we might create a scheduler using the default settings for 'DDPM' training and sampling (based on the paper "Denoising Diffusion Probabalistic Models":
```
from diffusers import DDPMScheduler
noise_scheduler = DDPMScheduler(num_train_timesteps=1000)
```
The DDPM paper describes a corruption process that adds a small amount of noise for every 'timestep'. Given $x_{t-1}$ for some timestep, we can get the next (slightly more noisy) version $x_t$ with:<br><br>
$q(\mathbf{x}_t \vert \mathbf{x}_{t-1}) = \mathcal{N}(\mathbf{x}_t; \sqrt{1 - \beta_t} \mathbf{x}_{t-1}, \beta_t\mathbf{I}) \quad
q(\mathbf{x}_{1:T} \vert \mathbf{x}_0) = \prod^T_{t=1} q(\mathbf{x}_t \vert \mathbf{x}_{t-1})$<br><br>
That is, we take $x_{t-1}$, scale it by $\sqrt{1 - \beta_t}$ and add noise scaled by $\beta_t$. This $\beta$ is defined for every t according to some schedule, and determines how much noise is added per timestep. Now, we don't necessarily want to do this operation 500 times to get $x_{500}$ so we have another formula to get $x_t$ for any t given $x_0$: <br><br>
$\begin{aligned}
q(\mathbf{x}_t \vert \mathbf{x}_0) &= \mathcal{N}(\mathbf{x}_t; \sqrt{\bar{\alpha}_t} \mathbf{x}_0, {(1 - \bar{\alpha}_t)} \mathbf{I})
\end{aligned}$ where $\bar{\alpha}_t = \prod_{i=1}^T \alpha_i$ and $\alpha_i = 1-\beta_i$<br><br>
The maths notation always looks scary! Luckily the scheduler handles all that for us. We can plot $\sqrt{\bar{\alpha}_t}$ (labelled as `sqrt_alpha_prod`) and $\sqrt{(1 - \bar{\alpha}_t)}$ (labelled as `sqrt_one_minus_alpha_prod`) to view how the input (x) and the noise are scaled and mixed across different timesteps:
```
plt.plot(noise_scheduler.alphas_cumprod.cpu() ** 0.5, label=r"${\sqrt{\bar{\alpha}_t}}$")
plt.plot((1 - noise_scheduler.alphas_cumprod.cpu()) ** 0.5, label=r"$\sqrt{(1 - \bar{\alpha}_t)}$")
plt.legend(fontsize="x-large");
```
Exercise: You can explore how this plot changes with different settings for beta_start, beta_end and beta_schedule by swapping in one of the commented-out options here:
```
# One with too little noise added:
# noise_scheduler = DDPMScheduler(num_train_timesteps=1000, beta_start=0.001, beta_end=0.004)
# The 'cosine' schedule, which may be better for small image sizes:
# noise_scheduler = DDPMScheduler(num_train_timesteps=1000, beta_schedule='squaredcos_cap_v2')
```
Whichever scheduler you've chosen, we can now use it to add noise in different amounts using the `noise_scheduler.add_noise` function like so:
```
timesteps = torch.linspace(0, 999, 8).long().to(device)
noise = torch.randn_like(xb)
noisy_xb = noise_scheduler.add_noise(xb, noise, timesteps)
print("Noisy X shape", noisy_xb.shape)
show_images(noisy_xb).resize((8 * 64, 64), resample=Image.NEAREST)
```
Again, explore the effect of using different noise schedules and parameters here. This video does a great job explaining some of the maths above in more detail, and is a great introduction to some of these concepts.
### Define the Model
Now we come to the core component: the model itself.
Most diffusion models use architectures that are some variant of a U-net and that's what we'll use here.
In a nutshell:
the model has the input image go through several blocks of ResNet layers, each of which halves the image size by 2
then through the same number of blocks that upsample it again.
there are skip connections linking the features on the downsample path to the corresponding layers in the upsample path.
A key feature of this model is that it predicts images of the same size as the input, which is exactly what we need here.
Diffusers provides us a handy `UNet2DModel` class which creates the desired architecture in PyTorch.
Let's create a U-net for our desired image size. Note that `down_block_types` correspond to the downsampling blocks (green on the diagram above), and `up_block_types` are the upsampling blocks (red on the diagram):
```
from diffusers import UNet2DModel
# Create a model
model = UNet2DModel(
sample_size=image_size, # the target image resolution
in_channels=3, # the number of input channels, 3 for RGB images
out_channels=3, # the number of output channels
layers_per_block=2, # how many ResNet layers to use per UNet block
block_out_channels=(64, 128, 128, 256), # More channels -> more parameters
down_block_types=(
"DownBlock2D", # a regular ResNet downsampling block
"DownBlock2D",
"AttnDownBlock2D", # a ResNet downsampling block with spatial self-attention
"AttnDownBlock2D",
),
up_block_types=(
"AttnUpBlock2D",
"AttnUpBlock2D", # a ResNet upsampling block with spatial self-attention
"UpBlock2D",
"UpBlock2D", # a regular ResNet upsampling block
),
)
model.to(device);
```
When dealing with higher-resolution inputs you may want to use more down and up-blocks, and keep the attention layers only at the lowest resolution (bottom) layers to reduce memory usage. We'll talk later about how you might experiment to find the best settings for your use-case.
We can check that passing in a batch of data and some random timesteps produces an output the same shape as the input data:
```
with torch.no_grad():
model_prediction = model(noisy_xb, timesteps).sample
model_prediction.shape
```
In the next section we'll see how to train this model.
### Create a Training Loop
Time to train! Below is a typical optimization loop in PyTorch, where we run through the data batch by batch and update the parameters of our model each step using an optimizer - in this case the AdamW optimizer with a learning rate of 0.0004.
For each batch of data, we
Sample some random timesteps
Noise the data accordingly
Feed the noisy data through the model
Compare the model predictions with the target (i.e. the noise in this case) using mean squared error as our loss function
Update the model parameters via `loss.backward()` and `optimizer.step()`
During this process we also log the losses over time for later plotting.
NB: This code takes nearly 10 minutes to run - feel free to skip these two cells and use the pretrained model if you are in a hurry. Alternatively, you can explore how reducing the number of channels in each layer via the model definition above can speed things up.
The official diffusers training example trains a larger model on this dataset at higher resolution, and is a good reference for what a less minimal training loop looks like:
```
# Set the noise scheduler
noise_scheduler = DDPMScheduler(
num_train_timesteps=1000, beta_schedule="squaredcos_cap_v2"
)
# Training loop
optimizer = torch.optim.AdamW(model.parameters(), lr=4e-4)
losses = []
for epoch in range(30):
for step, batch in enumerate(train_dataloader):
clean_images = batch["images"].to(device)
# Sample noise to add to the images
noise = torch.randn(clean_images.shape).to(clean_images.device)
bs = clean_images.shape[0]
# Sample a random timestep for each image
timesteps = torch.randint(
0, noise_scheduler.num_train_timesteps, (bs,), device=clean_images.device
).long()
# Add noise to the clean images according to the noise magnitude at each timestep
noisy_images = noise_scheduler.add_noise(clean_images, noise, timesteps)
# Get the model prediction
noise_pred = model(noisy_images, timesteps, return_dict=False)[0]
# Calculate the loss
loss = F.mse_loss(noise_pred, noise)
loss.backward(loss)
losses.append(loss.item())
# Update the model parameters with the optimizer
optimizer.step()
optimizer.zero_grad()
if (epoch + 1) % 5 == 0:
loss_last_epoch = sum(losses[-len(train_dataloader) :]) / len(train_dataloader)
print(f"Epoch:{epoch+1}, loss: {loss_last_epoch}")
```
Plotting the loss, we see that the model rapidly improves initially and then continues to get better at a slower rate (which is more obvious if we use a log scale as shown on the right):
```
fig, axs = plt.subplots(1, 2, figsize=(12, 4))
axs[0].plot(losses)
axs[1].plot(np.log(losses))
plt.show()
```
As an alternative to running the training code above, you can use the model from the pipeline like so:
```
# Uncomment to instead load the model I trained earlier:
# model = butterfly_pipeline.unet
```
### Generate Images
How do we get images with this model?
Option 1: Creating a pipeline:
```
from diffusers import DDPMPipeline
image_pipe = DDPMPipeline(unet=model, scheduler=noise_scheduler)
pipeline_output = image_pipe()
pipeline_output.images[0]
```
We can save a pipeline to a local folder like so:
```
image_pipe.save_pretrained("my_pipeline")
```
Inspecting the folder contents:
```
!ls my_pipeline/
```
```
model_index.json scheduler unet
```
The `scheduler` and `unet` subfolders contain everything needed to re-create those components. For example, inside the `unet` folder you'll find the model weights (`diffusion_pytorch_model.bin`) alongside a config file which specifies the UNet architecture.
```
!ls my_pipeline/unet/
```
```
config.json diffusion_pytorch_model.bin
```
Together, these files contain everything needed to recreate the pipeline. You can manually upload them to the hub to share the pipeline with others, or check out the code to do this via the API in the next section.
Option 2: Writing a Sampling Loop
If you inspect the forward method of the pipeline you'll be able to see what is happening when we run `image_pipe()`:
```
# ??image_pipe.forward
```
We begin with random noise, and run through the scheduler timesteps from most to least noisy, removing a small amount of noise each step based on the model prediction:
```
# Random starting point (8 random images):
sample = torch.randn(8, 3, 32, 32).to(device)
for i, t in enumerate(noise_scheduler.timesteps):
# Get model pred
with torch.no_grad():
residual = model(sample, t).sample
# Update sample with step
sample = noise_scheduler.step(residual, t, sample).prev_sample
show_images(sample)
```
The `noise_scheduler.step()` function does the maths required to update `sample` appropriately. There are a number of sampling methods - in the next unit we'll see how we can swap in a different sampler to speed up image generation with existing models, and talk more about the theory behind sampling from diffusion models.
### Push your model to the Hub
In the example above we saved our pipeline to a local folder. To push our model to the Hub, we will need to model repository to push our files to. We'll determine the repository name from the model ID we want to give our model (feel free to replace `the model_name` with your own choice; it just needs to contain your username, which is what the function `get_full_repo_name()` does):
```
from huggingface_hub import get_full_repo_name
model_name = "sd-class-butterflies-32"
hub_model_id = get_full_repo_name(model_name)
hub_model_id
```
Next, create a model repository on the 🤗 Hub and push our model:
```
from huggingface_hub import HfApi, create_repo
create_repo(hub_model_id)
api = HfApi()
api.upload_folder(
folder_path="my_pipeline/scheduler", path_in_repo="", repo_id=hub_model_id
)
api.upload_folder(folder_path="my_pipeline/unet", path_in_repo="", repo_id=hub_model_id)
api.upload_file(
path_or_fileobj="my_pipeline/model_index.json",
path_in_repo="model_index.json",
repo_id=hub_model_id,
)
```
The last thing to do is create a nice model card so that our butterfly generator can easily be found on the Hub (feel free to expand and edit the description!):
```
from huggingface_hub import ModelCard
content = f"""
---
license: mit
tags:
- pytorch
- diffusers
- unconditional-image-generation
- diffusion-models-class
---
# Model Card for Unit 1 of the [Diffusion Models Class 🧨](https://github.com/huggingface/diffusion-models-class)
This model is a diffusion model for unconditional image generation of cute 🦋.
## Usage
```python
from diffusers import DDPMPipeline
pipeline = DDPMPipeline.from_pretrained('{hub_model_id}')
image = pipeline().images[0]
image
```
"""
```
card = ModelCard(content)
card.push_to_hub(hub_model_id)
```
Now that the model is on the Hub, you can download it from anywhere by using the `from_pretrained()` method of the `DDPMPipeline` as follows"
```
from diffusers import DDPMPipeline
image_pipe = DDPMPipeline.from_pretrained(hub_model_id)
pipeline_output = image_pipe()
pipeline_output.images[0]
```
Great it works!
## Scaling up with 🤗 Accelerate
This notebook was made for learning purposes, and as such I tried to keep the code as minimal and clean as possible. Because of this, we omitted some of the things you might want if you were to try training a larger model on much more data, such as multi-GPU support, logging of progress and example images, gradient checkpointing to support larger batch sizes, automatic uploading of models and so on. Thankfully most of these features are available in the example training script here.
You can download the file like so:
```
!wget https://github.com/huggingface/diffusers/raw/main/examples/unconditional_image_generation/train_unconditional.py
```
Open up the file and you'll see where the model is defined and what settings are available. I ran the script with the following command:
```
# Let's give our new model a name for the Hub
model_name = "sd-class-butterflies-64"
hub_model_id = get_full_repo_name(model_name)
```
```
!accelerate launch train_unconditional.py \
--dataset_name="huggan/smithsonian_butterflies_subset" \
--resolution=64 \
--output_dir={model_name} \
--train_batch_size=32 \
--num_epochs=50 \
--gradient_accumulation_steps=1 \
--learning_rate=1e-4 \
--lr_warmup_steps=500 \
--mixed_precision="no"
```
As before, let's push the model to the Hub and create a nice model card (and feel free to edit it as you wish!):
```
create_repo(hub_model_id)
api = HfApi()
api.upload_folder(
folder_path=f"{model_name}/scheduler", path_in_repo="", repo_id=hub_model_id
)
api.upload_folder(
folder_path=f"{model_name}/unet", path_in_repo="", repo_id=hub_model_id
)
api.upload_file(
path_or_fileobj=f"{model_name}/model_index.json",
path_in_repo="model_index.json",
repo_id=hub_model_id,
)
content = f"""
---
license: mit
tags:
- pytorch
- diffusers
- unconditional-image-generation
- diffusion-models-class
---
# Model Card for Unit 1 of the [Diffusion Models Class 🧨](https://github.com/huggingface/diffusion-models-class)
This model is a diffusion model for unconditional image generation of cute 🦋.
## Usage
```python
from diffusers import DDPMPipeline
pipeline = DDPMPipeline.from_pretrained('{hub_model_id}')
image = pipeline().images[0]
image
```
"""
card = ModelCard(content)
card.push_to_hub(hub_model_id)
```
About 45 minutes later, this is the result:
```
pipeline = DDPMPipeline.from_pretrained(hub_model_id).to(device)
images = pipeline(batch_size=8).images
make_grid(images)
```
Exercise: See if you can find training/model settings that give good results in as little time as possible, and share your findings with the community. Dig around in the script to see if you can understand the code, and ask for clarification on anything that looks confusing.
Avenues for Further Exploration
Hopefully this has given you a taste of what you can do with the 🤗 Diffusers library! Some possible next steps:
Try training an unconditional diffusion model on a new dataset - bonus points if you create one yourself. You can find some great image datasets for this task in the HugGan organization on the Hub. Just make sure you downsample them if you don't want to wait a very long time for the model to train!
Try out DreamBooth to create your own customized Stable Diffusion pipeline using either this Space or this notebook
Modify the training script to explore different UNet hyperparameters (number of layers, channels etc), different noise schedules etc.
Check out the Diffusion Models from Scratch notebook for a different take on the core ideas we've covered in this unit | diffusion-models-class/units/en/unit1/2.mdx/0 | {
"file_path": "diffusion-models-class/units/en/unit1/2.mdx",
"repo_id": "diffusion-models-class",
"token_count": 8144
} | 153 |
<jupyter_start><jupyter_text>Hackathon DreamBooth 🏆 Bienvenue au Hackathon DreamBooth ! Dans cette compétition, vous allez **personnaliser un modèle de Stable Diffusion en le *finetunant* sur une poignée de vos propres images**. Pour cela, nous allons utiliser une technique appelée [_DreamBooth_](https://arxiv.org/abs/2208.12242), qui permet d'implanter un sujet (par exemple votre animal de compagnie ou votre plat préféré) dans le domaine de sortie du modèle de telle sorte qu'il puisse être synthétisé avec un _identifiant unique_ dans le prompt.Plongeons dans l'aventure ! PrérequisAvant de vous plonger dans ce *notebook*, vous devriez lire :* La vision d'ensemble de l'[unitét 3](https://github.com/huggingface/diffusion-models-class/blob/main/unit3/README.md) qui contient une plongée dans Stable Diffusion.* L'[article de blog](https://dreambooth.github.io/) des auteurs de DreamBooth pour avoir une idée de ce qui est possible avec cette technique* L'[article de blog](https://huggingface.co/blog/dreambooth) d'Hugging Face sur les meilleures pratiques pour *finetuner* Stable Diffusion avec DreamBooth. 🚨 **Note :** le code de **ce *notebook* nécessite au moins 14GB de vRAM GPU** et est une version simplifiée du [script d'entraînement officiel](https://github.com/huggingface/diffusers/tree/main/examples/dreambooth) fourni dans 🤗 *Diffusers*. Il produit des modèles décents pour la plupart des applications, mais nous recommandons d'expérimenter les fonctionnalités avancées telles que la préservation de la perte de classe & le *finetuning* de l'encodeur textuel que si vous disposez d'au moins 24 Go de vRAM. Consultez la [documentation](https://huggingface.co/docs/diffusers/training/dreambooth) de 🤗 *Diffusers* pour plus de détails. Qu'est-ce que DreamBooth? DreamBooth est une technique permettant d'enseigner de nouveaux concepts à Stable Diffusion en utilisant une forme spécialisée de *finetuning*. Si vous êtes sur Twitter ou Reddit, vous avez peut-être vu des gens utiliser cette technique pour créer des avatars (souvent hilarants) d'eux-mêmes. Par exemple, voici à quoi ressemblerait [Andrej Karpathy](https://karpathy.ai/) en tant que cow-boy (vous devrez peut-être exécuter la cellule pour voir le résultat) :<jupyter_code>%%html
<blockquote class="twitter-tweet"><p lang="en" dir="ltr">Stableboost auto-suggests a few hundred prompts by default but you can generate additional variations for any one prompt that seems to be giving fun/interesting results, or adjust it in any way: <a href="https://t.co/qWmadiXftP">pic.twitter.com/qWmadiXftP</a></p>— Andrej Karpathy (@karpathy) <a href="https://twitter.com/karpathy/status/1600578187141840896?ref_src=twsrc%5Etfw">December 7, 2022</a></blockquote> <script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script><jupyter_output><empty_output><jupyter_text>Le fonctionnement de DreamBooth est le suivant :* Recueillir environ 10-20 images d'un sujet (par exemple votre chien) et définir un identifiant unique [V] qui se réfère au sujet. Cet identifiant est généralement un mot inventé comme `flffydog` qui est implanté dans différentes prompts au moment de l'inférence pour placer le sujet dans différents contextes.* *Finetuner* le modèle de diffusion en fournissant les images accompagnées d'un prompt comme "Une photo d'un chien [V]" qui contient l'identifiant unique et le nom de la classe (c'est-à-dire "chien" dans cet exemple).* (Optionnellement) Appliquer un _a priori de perte de préservation spécifique à la classe_, qui exploite l`a priori sémantique que le modèle a sur la classe et l`encourage à générer des instances diverses appartenant à la classe du sujet en injectant le nom de la classe dans le prompt. En pratique, cette étape n'est vraiment nécessaire que pour les visages humains et peut être ignorée pour les thèmes que nous explorerons dans ce hackathon.Une vue d'ensemble de DreamBooth est présentée dans l'image ci-dessous : Que peut faire DreamBooth ?En plus de placer votre sujet dans des endroits intéressants, DreamBooth peut être utilisé pour la _**synthèse de vues guidée par texte**_, où le sujet est vu de différents points de vue comme le montre l'exemple ci-dessous : DreamBooth peut également être utilisé pour modifier les propriétés du sujet, comme la couleur ou le mélange des espèces animales ! Maintenant que nous avons vu quelques unes des possibilités de DreamBooth, commençons à entraîner nos propres modèles ! Étape 1 : Configuration Si vous exécutez ce *notebook* sur Google Colab ou Kaggle, exécutez la cellule ci-dessous pour installer les bibliothèques requises :<jupyter_code>%pip install -qqU diffusers transformers bitsandbytes accelerate ftfy datasets<jupyter_output><empty_output><jupyter_text>Si vous travaillez sur Kaggle, vous devrez installer la dernière version de PyTorch pour fonctionner avec 🤗 Accelerate :<jupyter_code># Décommenter et exécuter si vous utilisez les *notebooks* de Kaggle. Il se peut que vous deviez redémarrer le notebook par la suite
# %pip install -U torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu116<jupyter_output><empty_output><jupyter_text>Pour pouvoir pousser votre modèle vers le *Hub* et le faire apparaître sur le [Classement de l'Hackathon](https://huggingface.co/spaces/dreambooth-hackathon/leaderboard), il y a encore quelques étapes à suivre. Tout d'abord, vous devez créer un [*token* d'accès](https://huggingface.co/docs/hub/security-tokens) avec un accès d'écriture à partir de votre compte Hugging Face, puis exécuter la cellule suivante et entrer votre *token* :<jupyter_code>from huggingface_hub import notebook_login
notebook_login()<jupyter_output><empty_output><jupyter_text>La dernière étape consiste à installer Git LFS :<jupyter_code>%%capture
!sudo apt -qq install git-lfs
!git config --global credential.helper store<jupyter_output><empty_output><jupyter_text>Étape 2 : Choisir un thème Cette compétition est composée de 5 _thèmes_, où chacun rassemblera des modèles appartenant aux catégories suivantes :* **Animal 🐨 :** Utilisez ce thème pour générer des images de votre animal de compagnie ou de votre animal favori en train de se promener dans l'Acropole, de nager ou de voler dans l'espace.* **Science 🔬 :** Utilisez ce thème pour générer des images synthétiques de galaxies, de protéines ou de tout autre domaine des sciences naturelles et médicales.* **Nourriture 🍔 :** Utilisez ce thème pour finetuner un modèle sur votre plat ou cuisine préféré.* **Paysage 🏔 :** Utilisez ce thème pour créer de magnifiques paysages de votre montagne, lac ou jardin préféré.* **Carte blanche 🔥 :** Utilisez ce thème pour créer des modèles dans la catégorie de votre choix !Nous **attribuerons des prix aux 3 modèles les plus appréciés par thème**, et vous êtes encouragés à soumettre autant de modèles que vous le souhaitez ! Exécutez la cellule ci-dessous pour créer un widget déroulant dans lequel vous pouvez sélectionner le thème auquel vous souhaitez vous soumettre :<jupyter_code>import ipywidgets as widgets
theme = "animal"
drop_down = widgets.Dropdown(
options=["animal", "science", "food", "landscape", "wildcard"],
description="Choisir un thème",
disabled=False,
)
def dropdown_handler(change):
global theme
theme = change.new
drop_down.observe(dropdown_handler, names="value")
display(drop_down)
print(f"Vous avez sélectionné le thème {theme} !")<jupyter_output>You've selected the animal theme!<jupyter_text>Étape 3 : Créer un jeu de données d'images et le télécharger vers le *Hub* Une fois que vous avez choisi un thème, l'étape suivante consiste à **créer un jeu de données d'images pour ce thème** et à le télécharger sur le *Hub* d'Hugging Face :* Vous aurez besoin d'environ **10-20 images du sujet** que vous souhaitez implanter dans le modèle. Il peut s'agir de photos que vous avez prises ou téléchargées à partir de plateformes comme [Unsplash](https://unsplash.com/). Vous pouvez également vous inspirer des [jeux de données d'images](https://huggingface.co/datasets?task_categories=task_categories:image-classification&sort=downloads) trouvables sur le *Hub*.* Pour de meilleurs résultats, nous vous recommandons d'utiliser des images de votre sujet sous **différents angles et perspectives**. Une fois que vous avez rassemblé vos images dans un dossier, vous pouvez les télécharger vers le *Hub* en utilisant l'interface utilisateur pour glisser-déposer vos images. Consultez [ce guide](https://huggingface.co/docs/datasets/upload_datasetupload-with-the-hub-ui) pour plus de détails, ou regardez la vidéo ci-dessous :<jupyter_code>from IPython.display import YouTubeVideo
YouTubeVideo("HaN6qCr_Afc")<jupyter_output><empty_output><jupyter_text>Alternativement, vous pouvez charger votre jeu de données localement en utilisant la fonctionnalité `imagefolder` de 🤗 *Datasets* et ensuite le pousser vers le *Hub* :```pythonfrom datasets import load_datasetdataset = load_dataset("imagefolder", data_dir="votre_dossier_d'images") Supprimer la colonne d'étiquettes facticesdataset = dataset.remove_columns("label") Pousser vers le Hubdataset.push_to_hub("dreambooth-hackathon-images")``` Une fois que vous avez créé votre jeu de données, vous pouvez le télécharger en utilisant la fonction `load_dataset()` comme suit :<jupyter_code>from datasets import load_dataset
dataset_id = "lewtun/corgi" # CMODIFIEZ CELA EN VOTRE {hub_username}/{dataset_id}
dataset = load_dataset(dataset_id, split="train")
dataset<jupyter_output>Using custom data configuration lewtun--corgi-387a0d84d49c152d
Found cached dataset parquet (/home/lewis_huggingface_co/.cache/huggingface/datasets/lewtun___parquet/lewtun--corgi-387a0d84d49c152d/0.0.0/2a3b91fbd88a2c90d1dbbb32b460cf621d31bd5b05b934492fdef7d8d6f236ec)<jupyter_text>Maintenant que nous avons notre jeu de données, définissons une fonction d'aide pour visualiser quelques images :<jupyter_code>from PIL import Image
def image_grid(imgs, rows, cols):
assert len(imgs) == rows * cols
w, h = imgs[0].size
grid = Image.new("RGB", size=(cols * w, rows * h))
grid_w, grid_h = grid.size
for i, img in enumerate(imgs):
grid.paste(img, box=(i % cols * w, i // cols * h))
return grid
num_samples = 4
image_grid(dataset["image"][:num_samples], rows=1, cols=num_samples)<jupyter_output><empty_output><jupyter_text>Si cela semble correct, vous pouvez passer à l'étape suivante : créer un jeu de données PyTorch pour entraîner avec DreamBooth. Étape 3 : Créer un jeu de données d'entraînement Pour créer un ensemble d'entraînement pour nos images, nous avons besoin de quelques éléments :* Une _instance prompt_ qui est utilisée pour amorcer le modèle au début de l'entraînement. Dans la plupart des cas, l'utilisation de " a photo of [identifier] [class noun] " fonctionne très bien, par exemple " a photo of ccorgi dog " pour nos jolies images de Corgi. * **Note :** il est recommandé de choisir un mot unique / inventé comme `ccorgi` pour décrire votre sujet. Cela permettra d'éviter qu'un mot courant du vocabulaire du modèle ne soit écrasé.* Un _tokenizer_ pour convertir le prompt de l'instance en ID d'entrée qui peuvent être fournis à l'encodeur textuel de Stable Diffusion.* Un ensemble de _transformations d'images_, notamment le redimensionnement des images selon une forme commune et la normalisation des valeurs des pixels selon une moyenne et une distribution standard communes.En gardant cela à l'esprit, commençons par définir le prompt de l'instance :<jupyter_code>name_of_your_concept = "ccorgi" # À MODIFIER EN FONCTION DE VOTRE SUJET
type_of_thing = "dog" # À MODIFIER EN FONCTION DE VOTRE SUJET
instance_prompt = f"a photo of {name_of_your_concept} {type_of_thing}"
print(f"Instance prompt: {instance_prompt}")<jupyter_output>Instance prompt: a photo of ccorgi dog<jupyter_text>Ensuite, nous devons créer un objet PyTorch `Dataset` qui implémente les méthodes `__len__` et `__getitem__` :<jupyter_code>from torch.utils.data import Dataset
from torchvision import transforms
class DreamBoothDataset(Dataset):
def __init__(self, dataset, instance_prompt, tokenizer, size=512):
self.dataset = dataset
self.instance_prompt = instance_prompt
self.tokenizer = tokenizer
self.size = size
self.transforms = transforms.Compose(
[
transforms.Resize(size),
transforms.CenterCrop(size),
transforms.ToTensor(),
transforms.Normalize([0.5], [0.5]),
]
)
def __len__(self):
return len(self.dataset)
def __getitem__(self, index):
example = {}
image = self.dataset[index]["image"]
example["instance_images"] = self.transforms(image)
example["instance_prompt_ids"] = self.tokenizer(
self.instance_prompt,
padding="do_not_pad",
truncation=True,
max_length=self.tokenizer.model_max_length,
).input_ids
return example<jupyter_output><empty_output><jupyter_text>Très bien, vérifions maintenant que cela fonctionne en chargeant le *tokenizer* CLIP associé à l'encodeur textuel du modèle Stable Diffusion original, puis en créant le jeu de données d'entraînement :<jupyter_code>from transformers import CLIPTokenizer
# Le point de contrôle de Stable Diffusion que nous allons finetuner
model_id = "CompVis/stable-diffusion-v1-4"
tokenizer = CLIPTokenizer.from_pretrained(
model_id,
subfolder="tokenizer",
)
train_dataset = DreamBoothDataset(dataset, instance_prompt, tokenizer)
train_dataset[0]<jupyter_output><empty_output><jupyter_text>Étape 4 : Définir un collecteur de données Maintenant que nous disposons d'un jeu de données d'entraînement, la prochaine chose à faire est de définir un _collecteur de données_. Un collecteur de données est une fonction qui collecte les éléments d'un batch de données et applique une certaine logique pour former un tenseur unique que nous pouvons fournir au modèle. Si vous souhaitez en savoir plus, vous pouvez consulter cette vidéo du [Cours de NLP d'Hugging Face](https://huggingface.co/learn/nlp-course/fr/chapter1/1):<jupyter_code>YouTubeVideo("-RPeakdlHYo")<jupyter_output><empty_output><jupyter_text>Pour DreamBooth, notre collecteur de données doit fournir au modèle les ID d'entrée du *tokenizer* et les valeurs des pixels des images sous forme de tenseur empilé. La fonction ci-dessous fait l'affaire :<jupyter_code>import torch
def collate_fn(examples):
input_ids = [example["instance_prompt_ids"] for example in examples]
pixel_values = [example["instance_images"] for example in examples]
pixel_values = torch.stack(pixel_values)
pixel_values = pixel_values.to(memory_format=torch.contiguous_format).float()
input_ids = tokenizer.pad(
{"input_ids": input_ids}, padding=True, return_tensors="pt"
).input_ids
batch = {
"input_ids": input_ids,
"pixel_values": pixel_values,
}
return batch<jupyter_output><empty_output><jupyter_text>Étape 5 : Charger les composants du pipeline Stable Diffusion Nous avons presque toutes les pièces prêtes pour entraîner ! Comme vous l'avez vu dans le *notebook* de l'unité 3 sur Stable Diffusion, le pipeline est composé de plusieurs modèles :* Un encodeur textuel qui convertit les prompts en enchâssements. Nous utilisons ici CLIP car c'est l'encodeur utilisé pour entraîner Stable Diffusion v1-4.* Un VAE ou autoencodeur variationnel qui convertit les images en représentations compressées (c.-à-d. latentes) et les décompresse au moment de l'inférence.* Un UNet qui applique l'opération de débruitage sur le latent du VAE.Nous pouvons charger tous ces composants en utilisant les bibliothèques 🤗 *Diffusers* et 🤗 *Transformers* comme suit :<jupyter_code>from diffusers import AutoencoderKL, UNet2DConditionModel
from transformers import CLIPFeatureExtractor, CLIPTextModel
text_encoder = CLIPTextModel.from_pretrained(model_id, subfolder="text_encoder")
vae = AutoencoderKL.from_pretrained(model_id, subfolder="vae")
unet = UNet2DConditionModel.from_pretrained(model_id, subfolder="unet")
feature_extractor = CLIPFeatureExtractor.from_pretrained("openai/clip-vit-base-patch32")<jupyter_output><empty_output><jupyter_text>Étape 6 : *Finetuner* le modèle Maintenant vient la partie amusante : entraîner notre modèle avec DreamBooth ! Comme le montre l'[article de blog d'Hugging Face](https://huggingface.co/blog/dreambooth), les hyperparamètres les plus importants à ajuster sont le taux d'apprentissage et le nombre d'étapes d'entraînement.En général, vous obtiendrez de meilleurs résultats avec un taux d'apprentissage plus faible, mais vous devrez augmenter le nombre d'étapes d'entraînement. Les valeurs ci-dessous constituent un bon point de départ, mais vous devrez peut-être les ajuster en fonction de votre jeu de données :<jupyter_code>learning_rate = 2e-06
max_train_steps = 400<jupyter_output><empty_output><jupyter_text>Ensuite, enveloppons les autres hyperparamètres dont nous avons besoin dans un objet `Namespace` pour faciliter la configuration de l'entraînement :<jupyter_code>from argparse import Namespace
args = Namespace(
pretrained_model_name_or_path=model_id,
resolution=512, # Réduisez cette valeur si vous souhaitez économiser de la mémoire
train_dataset=train_dataset,
instance_prompt=instance_prompt,
learning_rate=learning_rate,
max_train_steps=max_train_steps,
train_batch_size=1,
gradient_accumulation_steps=1, # Augmentez cette valeur si vous souhaitez réduire l'utilisation de la mémoire
max_grad_norm=1.0,
gradient_checkpointing=True, # mettez cette valeur à True pour réduire l'utilisation de la mémoire
use_8bit_adam=True, # utiliser l'optimiseur 8bit de bitsandbytes
seed=3434554,
sample_batch_size=2,
output_dir="my-dreambooth", # où sauvegarder le pipeline
)<jupyter_output><empty_output><jupyter_text>La dernière étape consiste à définir une fonction `training_function()` qui enveloppe la logique d'entraînement et peut être passée à 🤗 *Accelerate* pour gérer l'entraînement sur 1 ou plusieurs GPU. Si c'est la première fois que vous utilisez 🤗 *Accelerate*, regardez cette vidéo pour avoir un aperçu rapide de ce qu'il peut faire :<jupyter_code>YouTubeVideo("s7dy8QRgjJ0")<jupyter_output><empty_output><jupyter_text>Les détails devraient ressembler à ce que nous avons vu dans les unités 1 et 2 lorsque nous avons entraîné nos propres modèles de diffusion à partir de zéro :<jupyter_code>import math
import torch.nn.functional as F
from accelerate import Accelerator
from accelerate.utils import set_seed
from diffusers import DDPMScheduler, PNDMScheduler, StableDiffusionPipeline
from diffusers.pipelines.stable_diffusion import StableDiffusionSafetyChecker
from torch.utils.data import DataLoader
from tqdm.auto import tqdm
def training_function(text_encoder, vae, unet):
accelerator = Accelerator(
gradient_accumulation_steps=args.gradient_accumulation_steps,
)
set_seed(args.seed)
if args.gradient_checkpointing:
unet.enable_gradient_checkpointing()
# Utiliser Adam 8 bits pour réduire l'utilisation de la mémoire ou pour finetuner le modèle sur les GPU de 16 Go
if args.use_8bit_adam:
import bitsandbytes as bnb
optimizer_class = bnb.optim.AdamW8bit
else:
optimizer_class = torch.optim.AdamW
optimizer = optimizer_class(
unet.parameters(), # n'optimisent que l'unet
lr=args.learning_rate,
)
noise_scheduler = DDPMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
num_train_timesteps=1000,
)
train_dataloader = DataLoader(
args.train_dataset,
batch_size=args.train_batch_size,
shuffle=True,
collate_fn=collate_fn,
)
unet, optimizer, train_dataloader = accelerator.prepare(
unet, optimizer, train_dataloader
)
# Déplacer text_encode et vae vers le gpu
text_encoder.to(accelerator.device)
vae.to(accelerator.device)
# Nous devons recalculer le nombre total d'étapes d'entraînement car la taille du chargeur de données d'entraînement peut avoir changé
num_update_steps_per_epoch = math.ceil(
len(train_dataloader) / args.gradient_accumulation_steps
)
num_train_epochs = math.ceil(args.max_train_steps / num_update_steps_per_epoch)
# Entraîner !
total_batch_size = (
args.train_batch_size
* accelerator.num_processes
* args.gradient_accumulation_steps
)
# N'afficher la barre de progression qu'une seule fois par machine
progress_bar = tqdm(
range(args.max_train_steps), disable=not accelerator.is_local_main_process
)
progress_bar.set_description("Steps")
global_step = 0
for epoch in range(num_train_epochs):
unet.train()
for step, batch in enumerate(train_dataloader):
with accelerator.accumulate(unet):
# Convertir les images en espace latent
with torch.no_grad():
latents = vae.encode(batch["pixel_values"]).latent_dist.sample()
latents = latents * 0.18215
# Échantillon de bruit que nous ajouterons aux latents
noise = torch.randn(latents.shape).to(latents.device)
bsz = latents.shape[0]
# Échantillonner un pas de temps aléatoire pour chaque image
timesteps = torch.randint(
0,
noise_scheduler.config.num_train_timesteps,
(bsz,),
device=latents.device,
).long()
# Ajouter du bruit aux latents en fonction de la magnitude du bruit à chaque pas de temps
# (il s'agit du processus de diffusion vers l'avant)
noisy_latents = noise_scheduler.add_noise(latents, noise, timesteps)
# Obtenir l'enchâssement du texte pour le conditionnement
with torch.no_grad():
encoder_hidden_states = text_encoder(batch["input_ids"])[0]
# Prédire le bruit résiduel
noise_pred = unet(
noisy_latents, timesteps, encoder_hidden_states
).sample
loss = (
F.mse_loss(noise_pred, noise, reduction="none")
.mean([1, 2, 3])
.mean()
)
accelerator.backward(loss)
if accelerator.sync_gradients:
accelerator.clip_grad_norm_(unet.parameters(), args.max_grad_norm)
optimizer.step()
optimizer.zero_grad()
# Vérifie si l'accélérateur a effectué une étape d'optimisation en coulisses
if accelerator.sync_gradients:
progress_bar.update(1)
global_step += 1
logs = {"loss": loss.detach().item()}
progress_bar.set_postfix(**logs)
if global_step >= args.max_train_steps:
break
accelerator.wait_for_everyone()
# Créé le pipeline en utilisant les modules entraînés et le sauvegarde
if accelerator.is_main_process:
print(f"Loading pipeline and saving to {args.output_dir}...")
scheduler = PNDMScheduler(
beta_start=0.00085,
beta_end=0.012,
beta_schedule="scaled_linear",
skip_prk_steps=True,
steps_offset=1,
)
pipeline = StableDiffusionPipeline(
text_encoder=text_encoder,
vae=vae,
unet=accelerator.unwrap_model(unet),
tokenizer=tokenizer,
scheduler=scheduler,
safety_checker=StableDiffusionSafetyChecker.from_pretrained(
"CompVis/stable-diffusion-safety-checker"
),
feature_extractor=feature_extractor,
)
pipeline.save_pretrained(args.output_dir)<jupyter_output><empty_output><jupyter_text>Maintenant que nous avons défini la fonction, entraînons-la ! Selon la taille de votre jeu de données et le type de GPU, cette opération peut prendre entre 5 minutes et 1 heure :<jupyter_code>from accelerate import notebook_launcher
num_of_gpus = 1 # MODIFIEZ POUR QUE CELA CORRESPONDE AU NOMBRE DE GPUS DONT VOUS DISPOSEZ
notebook_launcher(
training_function, args=(text_encoder, vae, unet), num_processes=num_of_gpus
)<jupyter_output>Launching training on one GPU.<jupyter_text>Si vous travaillez sur un seul GPU, vous pouvez libérer de la mémoire pour la section suivante en copiant le code ci-dessous dans une nouvelle cellule et en l'exécutant. Pour les machines multi-GPU, 🤗 *Accelerate* ne permet à _aucune_ cellule d'accéder directement au GPU avec `torch.cuda`, donc nous ne recommandons pas d'utiliser cette astuce dans ces cas :```pythonavec torch.no_grad() : torch.cuda.empty_cache()``` Étape 7 : Exécution de l'inférence et inspection des générations Now that we've trained the model, let's generate some images with it to see how it fares! First we'll load the pipeline from the output directory we save the model to:<jupyter_code>pipe = StableDiffusionPipeline.from_pretrained(
args.output_dir,
torch_dtype=torch.float16,
).to("cuda")<jupyter_output><empty_output><jupyter_text>Ensuite, générons quelques images. La variable `prompt` sera utilisée plus tard pour définir la valeur par défaut du widget du *Hub* d'*Hugging Face*, alors expérimentez un peu pour en trouver une bonne. Vous pouvez également essayer de créer des prompts élaborés avec [CLIP Interrogator](https://huggingface.co/spaces/pharma/CLIP-Interrogator) :<jupyter_code># Choisissez un prompt amusant ici et il sera utilisé comme valeur par défaut du widget lorsque nous pousserons vers le *Hub* dans la section suivante
prompt = f"a photo of {name_of_your_concept} {type_of_thing} in the Acropolis"
# Ajustez l'orientation pour contrôler à quel point les générations suivent le prompt
# Les valeurs comprises entre 7 et 11 sont généralement les plus efficaces
guidance_scale = 7
num_cols = 2
all_images = []
for _ in range(num_cols):
images = pipe(prompt, guidance_scale=guidance_scale).images
all_images.extend(images)
image_grid(all_images, 1, num_cols)<jupyter_output><empty_output><jupyter_text>Étape 8 : Pousser le modèle vers le *Hub* If you're happy with you model, the final step is to push it to the Hub and view it on the [DreamBooth Leaderboard](https://huggingface.co/spaces/dreambooth-hackathon/leaderboard)!First, you'll need to define a name for your model repo. By default, we use the unique identifier and class name, but feel free to change this if you want:<jupyter_code># Créez un nom pour votre modèle sur le Hub. Aucun espace n'est autorisé.
model_name = f"{name_of_your_concept}-{type_of_thing}"<jupyter_output><empty_output><jupyter_text>Ensuite, ajoutez une brève description du type de modèle que vous avez entraîné ou toute autre information que vous souhaitez partager :<jupyter_code># Décrivez le thème et le modèle que vous avez entraînés
description = f"""
This is a Stable Diffusion model fine-tuned on `{type_of_thing}` images for the {theme} theme.
"""<jupyter_output><empty_output><jupyter_text>Enfin, exécutez la cellule ci-dessous pour créer un repo sur le Hub et pousser tous nos fichiers avec une belle carte de modèle :<jupyter_code># Code pour télécharger un pipeline sauvegardé localement vers le Hub
from huggingface_hub import HfApi, ModelCard, create_repo, get_full_repo_name
# Mise en place du repo et téléchargement des fichiers
hub_model_id = get_full_repo_name(model_name)
create_repo(hub_model_id)
api = HfApi()
api.upload_folder(folder_path=args.output_dir, path_in_repo="", repo_id=hub_model_id)
content = f"""
---
license: creativeml-openrail-m
tags:
- pytorch
- diffusers
- stable-diffusion
- text-to-image
- diffusion-models-class
- dreambooth-hackathon
- {theme}
widget:
- text: {prompt}
---
# DreamBooth model for the {name_of_your_concept} concept trained by {api.whoami()["name"]} on the {dataset_id} dataset.
This is a Stable Diffusion model fine-tuned on the {name_of_your_concept} concept with DreamBooth. It can be used by modifying the `instance_prompt`: **{instance_prompt}**
This model was created as part of the DreamBooth Hackathon 🔥. Visit the [organisation page](https://huggingface.co/dreambooth-hackathon) for instructions on how to take part!
## Description
{description}
## Usage
```python
from diffusers import StableDiffusionPipeline
pipeline = StableDiffusionPipeline.from_pretrained('{hub_model_id}')
image = pipeline().images[0]
image
```
"""
card = ModelCard(content)
hub_url = card.push_to_hub(hub_model_id)
print(f"Téléchargement réussi ! Le modèle peut être trouvé ici : {hub_url}")
print(
f"Consultez votre soumission sur le classement public ici: https://huggingface.co/spaces/dreambooth-hackathon/leaderboard"
)<jupyter_output>Upload successful! Model can be found here: https://huggingface.co/lewtun/test-dogs/blob/main/README.md
View your submission on the public leaderboard here: https://huggingface.co/spaces/dreambooth-hackathon/leaderboard | diffusion-models-class/units/fr/events/dreambooth.ipynb/0 | {
"file_path": "diffusion-models-class/units/fr/events/dreambooth.ipynb",
"repo_id": "diffusion-models-class",
"token_count": 11430
} | 154 |
# Introduction à Stable Diffusion
<CourseFloatingBanner unit={3}
classNames="absolute z-10 right-0 top-0"
notebooks={[
{label: "Introduction à Stable Diffusion", value: "https://colab.research.google.com/github/huggingface/diffusion-models-class/blob/main/units/fr/unit3/stable_diffusion_introduction.ipynb"},
{label: "Introduction à Stable Diffusion", value: "https://studiolab.sagemaker.aws/import/github/huggingface/diffusion-models-class/blob/main/units/fr/unit3/stable_diffusion_introduction.ipynb"},
]} />
Ce *notebook* va couvrir les bases de l'utilisation de Stable Diffusion pour créer et modifier des images en utilisant les pipelines existants. Nous allons également jeter un bref coup d'œil aux composants clés au sein du pipeline, tout en laissant une exploration plus approfondie de ces derniers au *notebook* de plongée profonde. Plus précisément, nous aborderons les points suivants :
- Générer des images à partir d'un texte en utilisant le `StableDiffusionPipeline` et en expérimentant avec les arguments disponibles
- Voir certains des composants clés du pipeline en action
- Le VAE qui en fait un "modèle de diffusion latent".
- Le *tokenizer* et l'encodeur qui traitent le prompt textuel
- L'UNet lui-même
- Le planificateur et l'exploration de différents planificateurs
- Reproduction de la boucle d'échantillonnage avec les composants du pipeline
- Édition d'images existantes avec le pipeline Img2Img
- Utilisation des pipelines de complétion d'image et Depth2Img
# Configuration
```
!pip install -Uq diffusers ftfy accelerate
```
```
# Installer transformers à partir de la source car nous avons besoin de la dernière version pour Depth2Img
!pip install -Uq git+https://github.com/huggingface/transformers
```
```
import torch
import requests
from PIL import Image
from io import BytesIO
from matplotlib import pyplot as plt
# Nous allons explorer un certain nombre de pipelines aujourd'hui !
from diffusers import (
StableDiffusionPipeline,
StableDiffusionImg2ImgPipeline,
StableDiffusionInpaintPipeline,
StableDiffusionDepth2ImgPipeline
)
# Nous utiliserons quelques images de démonstration plus loin dans le notebook
def download_image(url):
response = requests.get(url)
return Image.open(BytesIO(response.content)).convert("RGB")
# Télécharger des images pour l'exemple de complétion d'image
img_url = "https://raw.githubusercontent.com/CompVis/latent-diffusion/main/data/inpainting_examples/overture-creations-5sI6fQgYIuo.png"
mask_url = "https://raw.githubusercontent.com/CompVis/latent-diffusion/main/data/inpainting_examples/overture-creations-5sI6fQgYIuo_mask.png"
init_image = download_image(img_url).resize((512, 512))
mask_image = download_image(mask_url).resize((512, 512))
```
```
# Définir l'appareil
device = (
"mps"
if torch.backends.mps.is_available()
else "cuda"
if torch.cuda.is_available()
else "cpu"
)
```
# Générer des images à partir d'un texte
Chargeons un pipeline Stable Diffusion et voyons ce qu'il peut faire. Il existe plusieurs versions de Stable Diffusion, la plus récente étant la version 2.1. Si vous souhaitez explorer une version plus ancienne, remplacez simplement l'ID du modèle par le modèle approprié (par exemple, vous pouvez essayer "CompVis/stable-diffusion-v1-4" ou choisir un modèle à partir de la [bibliothèque de concepts dreambooth](https://huggingface.co/sd-dreambooth-library)).
```
# Charger le pipeline
model_id = "stabilityai/stable-diffusion-2-1-base"
pipe = StableDiffusionPipeline.from_pretrained(model_id).to(device)
```
Si vous manquez de mémoire GPU, vous pouvez faire certaines choses pour réduire l'utilisation de la RAM :
- Chargez la version FP16 (non supportée par tous les systèmes). Avec cette version, vous devrez peut-être convertir les tenseurs en torch.float16 lorsque vous expérimenterez avec les composants individuels du pipeline :
```
pipe = StableDiffusionPipeline.from_pretrained(model_id, revision="fp16", torch_dtype=torch.float16).to(device)
```
- Activer le découpage de l'attention. Cela permet de réduire l'utilisation de la mémoire du GPU au prix d'une légère réduction de la vitesse :
```
pipe.enable_attention_slicing()
```
- Réduire la taille des images générées
Une fois le pipeline chargé, nous pouvons générer une image sur la base d'un prompt avec le code suivant :
```
# Mise en place d'un générateur pour la reproductibilité
generator = torch.Generator(device=device).manual_seed(42)
# Exécuter le pipeline, en montrant certains des arguments disponibles
pipe_output = pipe(
prompt="Palette knife painting of an autumn cityscape", # Ce qu'il faut générer
negative_prompt="Oversaturated, blurry, low quality", # Ce qu'il ne faut PAS générer
height=480, width=640, # Spécifier la taille de l'image
guidance_scale=8, # Comment suivre avec fermeté le prompt
num_inference_steps=35, # Nombre d'étapes
generator=generator # Graine aléatoire fixe
)
# Visualiser l'image obtenue :
pipe_output.images[0]
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
<Tip>
✏️ *A votre tour !* passez un peu de temps à jouer avec la cellule ci-dessus en utilisant vos propres prompts et en modifiant les paramètres pour voir comment ils affectent la sortie. Utilisez une graine aléatoire différente ou supprimez l'argument du générateur pour obtenir des résultats différents à chaque fois.
</Tip>
Arguments clés à modifier :
- La largeur et la hauteur spécifient la taille de l'image générée. Elles doivent être divisibles par 8 pour que le VAE fonctionne (ce que nous verrons dans une prochaine section).
- Le nombre de pas influence la qualité de la génération. La valeur par défaut (50) fonctionne bien, mais dans certains cas, on peut se contenter de 20 pas, ce qui est pratique pour l'expérimentation.
- Le prompt négatif est utilisé pendant le processus d'orientation sans classifieur et peut être un moyen utile d'ajouter un contrôle supplémentaire. Vous pouvez ne pas l'utiliser, mais de nombreux utilisateurs trouvent utile de lister certaines descriptions indésirables dans le prompt négatif, comme illustré ci-dessus.
- L'argument guidance_scale détermine l'intensité du guidage sans classifieur (CFG pour *classifier-free guidance*). Des échelles plus élevées poussent les images générées à mieux correspondre au prompt, mais si l'échelle est trop élevée, les résultats peuvent devenir sursaturés et désagréables.
Si vous souhaitez vous inspirer d'un prompt, le [Stable Diffusion Prompt Book] (https://app.usp.ai/static/Stable%20Diffusion%202.1%20Prompt%20Book%20by%20USP.ai.pdf) est un bon point de départ.
Vous pouvez voir l'effet de l'augmentation de l'échelle d'orientation dans la cellule suivante :
```
cfg_scales = [1.1, 8, 12] #@param
prompt = "A collie with a pink hat" #@param
fig, axs = plt.subplots(1, len(cfg_scales), figsize=(16, 5))
for i, ax in enumerate(axs):
im = pipe(prompt, height=480, width=480,
guidance_scale=cfg_scales[i], num_inference_steps=35,
generator=torch.Generator(device=device).manual_seed(42)).images[0]
ax.imshow(im); ax.set_title(f'CFG Scale {cfg_scales[i]}');
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Modifiez les valeurs ci-dessus pour essayer différentes échelles et différents prompts. L'interprétation est bien sûr subjective, mais par expérience, toute valeur comprise entre 8 et 12 donne de meilleurs résultats que les valeurs inférieures ou supérieures à cette fourchette.
## Composants du pipeline
Le StableDiffusionPipeline que nous utilisons est un peu plus complexe que le DDPMPipeline que nous avons exploré dans les unités précédentes. En plus du UNet et du planificateur, il y a un certain nombre d'autres composants inclus dans le pipeline :
```
print(list(pipe.components.keys())) # Liste des composants
```
```
['vae', 'text_encoder', 'tokenizer', 'unet', 'scheduler', 'safety_checker', 'feature_extractor']
```
Pour mieux comprendre le fonctionnement du pipeline, voyons brièvement chaque composant en action individuellement, puis assemblons-les pour reproduire la fonctionnalité du pipeline.
### Le VAE
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Le VAE (auto-encodeur variationnel) est un type de modèle capable d'encoder son entrée dans une représentation comprimée, puis de décoder cette représentation latente pour la rendre proche de l'entrée d'origine. Lors de la génération d'images avec diffusion stable, nous générons d'abord les latents en appliquant le processus de diffusion dans l'espace latent du VAE, puis nous les décodons à la fin pour visualiser l'image résultante.
Voici un code qui prend une image d'entrée, l'encode dans une représentation latente et la décode à nouveau à l'aide de la VAE :
```
# Créez de fausses données (une image aléatoire, une plage (-1, 1))
images = torch.rand(1, 3, 512, 512).to(device) * 2 - 1
print("Input images shape:", images.shape)
# Encoder dans l'espace latent
with torch.no_grad():
latents = 0.18215 * pipe.vae.encode(images).latent_dist.mean
print("Encoded latents shape:", latents.shape)
# Décoder à nouveau
with torch.no_grad():
decoded_images = pipe.vae.decode(latents / 0.18215).sample
print("Decoded images shape:", decoded_images.shape)
```
```
Input images shape: torch.Size([1, 3, 512, 512])
Encoded latents shape: torch.Size([1, 4, 64, 64])
Decoded images shape: torch.Size([1, 3, 512, 512])
```
Comme vous pouvez le constater, l'image 512x512 est compressée en une représentation latente 64x64 (avec quatre canaux). Cette réduction par 8 de chaque dimension spatiale est la raison pour laquelle la largeur et la hauteur spécifiées doivent être des multiples de 8.
Travailler avec ces latents 4x64x64 riches en informations est plus efficace que de travailler avec des images massives de 512 px, ce qui permet d'obtenir des modèles de diffusion plus rapides dont l'entraînement et l'utilisation nécessitent moins de ressources. Le processus de décodage du VAE n'est pas parfait, mais il est suffisamment bon pour que le petit compromis de qualité en vaille généralement la peine.
NB : L'exemple de code ci-dessus inclut un facteur d'échelle de 0,18215 nécessaire pour correspondre au traitement utilisé lors de l'entraînement de SD.
### Le *tokenizer* et l'encodeur
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
L'objectif de l'encodeur est de transformer une chaîne d'entrée (le prompt) en une représentation numérique qui peut être transmise à l'UNet en tant que conditionnement. Le texte est d'abord transformé en une série de *tokens* à l'aide du *tokenizer* du pipeline. L'encodeur dispose d'un vocabulaire d'environ 50K *tokens* et tout mot ne figurant pas dans ce vocabulaire est divisé en sous-mots plus petits. Les *tokens* sont ensuite transmis à l'encodeur lui-même : un transformer qui a été entraîné à l'origine comme encodeur pour CLIP. Nous espérons que ce transformer pré-entraîné a appris des représentations riches du texte qui seront également utiles pour la tâche de diffusion.
Testons ce processus en encodant un prompt d'exemple, d'abord en le tokenizant manuellement et en le faisant passer par l'encodeur puis en utilisant la méthode `_encode_prompt` pour montrer le processus complet, y compris le rembourrage/la troncature de la longueur jusqu'à la longueur maximale de 77 *tokens* :
```
# Tokenizer et encoder un prompt d'exemple manuellement :
# Tokenizer
input_ids = pipe.tokenizer(["A painting of a flooble"])['input_ids']
print("Input ID -> decoded token")
for input_id in input_ids[0]:
print(f"{input_id} -> {pipe.tokenizer.decode(input_id)}")
# Passage par l'encodeur de texte CLIP
input_ids = torch.tensor(input_ids).to(device)
with torch.no_grad():
text_embeddings = pipe.text_encoder(input_ids)['last_hidden_state']
print("Text embeddings shape:", text_embeddings.shape)
```
```
Input ID -> decoded token
49406 -> <|startoftext|>
320 -> a
3086 -> painting
539 -> of
320 -> a
4062 -> floo
1059 -> ble
49407 -> <|endoftext|>
Text embeddings shape: torch.Size([1, 8, 1024])
```
```
# Obtenir les enchâssements finaux à l'aide de la fonction _encode_prompt du pipeline :
text_embeddings = pipe._encode_prompt("A painting of a flooble", device, 1, False, '')
text_embeddings.shape
```
```
torch.Size([1, 77, 1024])
```
Ces enchâssements (les "états cachés" du dernier bloc de transformation dans le modèle de l'encodeur) seront transmis à l'UNet en tant qu'argument supplémentaire de la méthode `forward`, que nous verrons dans la section suivante.
### L'UNet
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
L'UNet prend une entrée bruitée et prédit le bruit, tout comme les UNets que nous avons vus dans les unités précédentes. Contrairement aux exemples précédents, l'entrée n'est pas une image mais une représentation latente d'une image. En plus du conditionnement du pas de temps, ce UNet prend également en compte l'enchâssement du prompt en tant qu'entrée supplémentaire. Ici, il fait des prédictions sur des données fictives :
```
# Entrées fictives
timestep = pipe.scheduler.timesteps[0]
latents = torch.randn(1, 4, 64, 64).to(device)
text_embeddings = torch.randn(1, 77, 1024).to(device)
# Prédiction du modèle
with torch.no_grad():
unet_output = pipe.unet(latents, timestep, text_embeddings).sample
print('UNet output shape:', unet_output.shape) # Même forme que les latents d'entrée
```
```
UNet output shape: torch.Size([1, 4, 64, 64])
```
### Le planificateur
Le planificateur stocke le plan de bruit et gère la mise à jour de l'échantillon bruité sur la base des prédictions du modèle. Le planificateur par défaut est un `PNDMScheduler`, mais vous pouvez en utiliser d'autres (comme `LMSDiscreteScheduler`) tant qu'ils sont initialisés avec la même configuration.
Nous pouvons tracer le plan de bruit pour voir le niveau de bruit (basé sur $bar{\alpha}$) au fil du temps :
```
plt.plot(pipe.scheduler.alphas_cumprod, label=r'$\bar{\alpha}$')
plt.xlabel('Timestep (high noise to low noise ->)')
plt.title('Noise schedule');plt.legend()
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Si vous souhaitez essayer un autre planificateur, vous pouvez le remplacer comme suit :
```
from diffusers import LMSDiscreteScheduler
# Remplacer le planificateur
pipe.scheduler = LMSDiscreteScheduler.from_config(pipe.scheduler.config)
# Afficher la configuration
print('Scheduler config:', pipe.scheduler)
# Générer une image avec ce nouveau planificateur
pipe(prompt="Palette knife painting of an winter cityscape", height=480, width=480,
generator=torch.Generator(device=device).manual_seed(42)).images[0]
```
```
Scheduler config: LMSDiscreteScheduler {
"_class_name": "LMSDiscreteScheduler",
"_diffusers_version": "0.11.1",
"beta_end": 0.012,
"beta_schedule": "scaled_linear",
"beta_start": 0.00085,
"clip_sample": false,
"num_train_timesteps": 1000,
"prediction_type": "epsilon",
"set_alpha_to_one": false,
"skip_prk_steps": true,
"steps_offset": 1,
"trained_betas": null
}
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Vous pouvez lire plus de détails sur l'utilisation de différents planificateurs [ici](https://huggingface.co/docs/diffusers/v0.17.1/en/api/pipelines/stable_diffusion/overview#how-to-load-and-use-different-schedulers).
### Une boucle d'échantillonnage par vous-même
Maintenant que nous avons vu tous ces composants en action, nous pouvons les assembler pour reproduire la fonctionnalité du pipeline :
```
guidance_scale = 8 #@param
num_inference_steps=30 #@param
prompt = "Beautiful picture of a wave breaking" #@param
negative_prompt = "zoomed in, blurry, oversaturated, warped" #@param
# Encoder le prompt
text_embeddings = pipe._encode_prompt(prompt, device, 1, True, negative_prompt)
# Créer notre point de départ aléatoire
latents = torch.randn((1, 4, 64, 64), device=device, generator=generator)
latents *= pipe.scheduler.init_noise_sigma
# Preparer le planificateur
pipe.scheduler.set_timesteps(num_inference_steps, device=device)
# Boucle sur les pas de temps d'échantillonnage
for i, t in enumerate(pipe.scheduler.timesteps):
# développer les latents si l'on procède à un guidage sans classifieur
latent_model_input = torch.cat([latents] * 2)
# Appliquer tout échelonnement requis par le planificateur
latent_model_input = pipe.scheduler.scale_model_input(latent_model_input, t)
# prédire le bruit résiduel avec l'UNet
with torch.no_grad():
noise_pred = pipe.unet(latent_model_input, t, encoder_hidden_states=text_embeddings).sample
# réaliser un guidage
noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
noise_pred = noise_pred_uncond + guidance_scale * (noise_pred_text - noise_pred_uncond)
# calculer l'échantillon bruité précédent x_t -> x_t-1
latents = pipe.scheduler.step(noise_pred, t, latents).prev_sample
# Décoder les latents résultants en une image
with torch.no_grad():
image = pipe.decode_latents(latents.detach())
# Visualiser
pipe.numpy_to_pil(image)[0]
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Dans la plupart des cas, il sera plus facile d'utiliser les pipelines existants, mais le fait de disposer de cette boucle d'échantillonnage bidouillable peut s'avérer utile pour comprendre et modifier le fonctionnement de chaque composant. Si vous souhaitez voir ce code et tous les différents composants explorés et modifiés en profondeur, consultez le [*notebook*](https://github.com/fastai/diffusion-nbs/blob/master/Stable%20Diffusion%20Deep%20Dive.ipynb) et la [video](https://m.youtube.com/watch?v=0_BBRNYInx8) 'Stable Diffusion Deep Dive' pour une exploration plus approfondie.
## Pipelines supplémentaires
Que pouvons-nous faire d'autre que de générer des images à partir d'un prompt ? Beaucoup de choses ! Dans cette section, nous allons démontrer quelques pipelines sympas pour vous donner un avant-goût des autres tâches pour lesquelles Stable Diffusion peut être utilisé. Plusieurs d'entre eux nécessitent le téléchargement de nouveaux modèles, donc si vous êtes pressé, vous pouvez parcourir cette section en vous contentant de regarder les résultats existants plutôt que de télécharger et d'exécuter tous les modèles vous-même.
### Img2Img
Dans les exemples présentés jusqu'à présent, nous avons généré des images en partant de latents aléatoires et en appliquant la boucle complète d'échantillonnage par diffusion. Mais il n'est pas nécessaire de partir de zéro. Le pipeline Img2Img encode d'abord une image existante dans un ensemble de latents, puis ajoute du bruit aux latents et utilise cette image comme point de départ. La quantité de bruit ajoutée et le nombre d'étapes de débruitage appliquées déterminent la "force" du processus Img2Img. L'ajout d'une petite quantité de bruit (force faible) n'entraînera que très peu de changements, tandis que l'ajout d'une quantité maximale de bruit et l'exécution du processus de débruitage complet donneront une image qui ne ressemblera guère à l'image d'entrée, hormis quelques similitudes au niveau de la structure générale.
Ce pipeline ne nécessite pas de modèles particuliers, et tant que l'ID du modèle est le même que celui de notre exemple texte-image ci-dessus, aucun nouveau fichier ne devra être téléchargé.
```
# Chargement d'un pipeline Img2Img
model_id = "stabilityai/stable-diffusion-2-1-base"
img2img_pipe = StableDiffusionImg2ImgPipeline.from_pretrained(model_id).to(device)
```
Dans la section Configuration nous avons chargé un exemple `init_image` à utiliser pour cette démo, mais vous pouvez le remplacer par votre propre image si vous préférez. Voici le pipeline en action :
```
# Appliquer Img2Img
result_image = img2img_pipe(
prompt="An oil painting of a man on a bench",
image = init_image, # L'image de départ
strength = 0.6, # 0 pour aucun changement, 1.0 pour une force maximale
).images[0]
# Voir le résultat
fig, axs = plt.subplots(1, 2, figsize=(12, 5))
axs[0].imshow(init_image);axs[0].set_title('Input Image')
axs[1].imshow(result_image);axs[1].set_title('Result')
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
<Tip>
✏️ *A votre tour !* expérimentez avec ce pipeline. Essayez vos propres images, ou jouez avec différentes forces et différents prompts. Vous pouvez utiliser les mêmes arguments que pour le pipeline texte-image, alors n'hésitez pas à essayer différentes tailles, différents nombres d'étapes, etc.
</Tip>
### Complétion d'image (*inpainting)
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Que se passerait-il si nous voulions conserver une partie de l'image d'entrée inchangée mais générer quelque chose de nouveau dans d'autres parties ? C'est ce qu'on appelle la complétion d'image (*inpainting*). Bien qu'il soit possible de le faire avec le même modèle que les démonstrations précédentes (via `StableDiffusionInpaintPipelineLegacy`), nous pouvons obtenir de meilleurs résultats en utilisant une version *finetunée* personnalisée de Stable Diffusion qui prend un masque comme condition supplémentaire. L'image du masque doit avoir la même forme que l'image d'entrée, avec du blanc dans les zones à remplacer et du noir dans les zones à garder inchangées. Voici comment charger un tel pipeline et l'appliquer à l'image d'exemple et au masque chargés dans la section Configuration :
```
# Charger le pipeline de complétion d'image (nécessite un modèle de complétion d'image approprié)
pipe = StableDiffusionInpaintPipeline.from_pretrained("runwayml/stable-diffusion-inpainting")
pipe = pipe.to(device)
```
```
# Complétion d'image avec un prompt pour avoir le résultat souhaité
prompt = "A small robot, high resolution, sitting on a park bench"
image = pipe(prompt=prompt, image=init_image, mask_image=mask_image).images[0]
# Voir le résultat
fig, axs = plt.subplots(1, 3, figsize=(16, 5))
axs[0].imshow(init_image);axs[0].set_title('Input Image')
axs[1].imshow(mask_image);axs[1].set_title('Mask')
axs[2].imshow(image);axs[2].set_title('Result')
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Ce modèle peut être particulièrement puissant lorsqu'il est combiné à un autre modèle pour générer automatiquement des masques. Par exemple, ce [Space](https://huggingface.co/spaces/nielsr/text-based-inpainting) utilise un modèle appelé CLIPSeg pour masquer un objet à remplacer sur la base d'une description textuelle.
#### En marge : gestion du cache de votre modèle
L'exploration de différents pipelines et variantes de modèles peut remplir votre espace disque. Vous pouvez voir quels modèles sont actuellement téléchargés avec :
```
!ls ~/.cache/huggingface/diffusers/ # Liste du contenu du répertoire cache
```
Consultez la [documentation](https://huggingface.co/docs/huggingface_hub/main/guides/manage-cache) sur la mise en cache pour savoir comment visualiser et gérer efficacement votre cache.
### Depth2Image
Image d'entrée, image de profondeur et exemples générés (source de l'image : StabilityAI)
Img2Img est très bien, mais parfois nous voulons créer une nouvelle image avec la composition de l'original mais avec des couleurs ou des textures complètement différentes. Il peut être difficile de trouver une force d'Img2Img qui préserve ce que nous voulons de la mise en page sans conserver les couleurs d'entrée.
Il est temps d'adopter un autre modèle *finetuné* ! Celui-ci prend en compte les informations de profondeur comme condition supplémentaire lors de la génération. Le pipeline utilise un modèle d'estimation de la profondeur pour créer une carte de profondeur, qui est ensuite transmise au UNet *finetuné* lors de la génération d'images afin de préserver (si possible) la profondeur et la structure de l'image initiale tout en remplissant un contenu complètement nouveau.
```
# Charger le pipeline Depth2Img (nécessite un modèle approprié)
pipe = StableDiffusionDepth2ImgPipeline.from_pretrained("stabilityai/stable-diffusion-2-depth")
pipe = pipe.to(device)
```
```
# Complétion d'image avec un prompt pour avoir le résultat souhaité
prompt = "An oil painting of a man on a bench"
image = pipe(prompt=prompt, image=init_image).images[0]
```
```
# Voir le résultat
fig, axs = plt.subplots(1, 2, figsize=(16, 5))
axs[0].imshow(init_image);axs[0].set_title('Input Image')
axs[1].imshow(image);axs[1].set_title('Result');
```
<div class="flex justify-center">
<img class="block dark:hidden" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary.svg" alt="Bref aperçu du contenu du cours.">
<img class="hidden dark:block" src="https://huggingface.co/datasets/huggingface-course/documentation-images/resolve/main/en/chapter1/summary-dark.svg" alt="Bref aperçu des différents chapitres du cours.">
</div>
Notez la comparaison avec l'exemple img2img. Ici, la variation de couleur est beaucoup plus importante mais la structure globale reste fidèle à l'original. Ce n'est pas idéal dans ce cas, car l'homme a été doté d'une anatomie extrêmement bizarre pour correspondre à la forme du chien, mais dans certains cas, c'est extraordinairement utile. Pour un exemple de cette approche, regardez ce [tweet](https://twitter.com/CarsonKatri/status/1600248599254007810?s=20&t=BlzSK26sfqi2336SN0gKpQ) montrant le modèle de profondeur utilisé pour texturer une scène en 3D !
# Et maintenant ?
Nous espérons vous avoir donné un avant-goût des nombreuses possibilités offertes par Stable Diffusion ! Une fois que vous en aurez assez de jouer avec les exemples de ce *notebook*, allez voir le *notebook* du hackathon DreamBooth pour voir comment *finetuner* votre propre version de Stable Diffusion qui peut être utilisée avec les pipelines texte-image ou img2img que nous avons vus ici.
Si vous êtes curieux d'approfondir le fonctionnement des différents composants, consultez le *notebook* Stable Diffusion Deep Dive qui va beaucoup plus loin dans les détails et montre quelques astuces supplémentaires que nous pouvons faire.
N'oubliez pas de partager vos créations avec nous et la communauté ! | diffusion-models-class/units/fr/unit3/2.mdx/0 | {
"file_path": "diffusion-models-class/units/fr/unit3/2.mdx",
"repo_id": "diffusion-models-class",
"token_count": 11154
} | 155 |
<jupyter_start><jupyter_text>Préparer des données (PyTorch) Installez les bibliothèques 🤗 *Transformers* et 🤗 *Datasets* pour exécuter ce *notebook*.<jupyter_code>!pip install datasets transformers[sentencepiece]
import torch
from transformers import AdamW, AutoTokenizer, AutoModelForSequenceClassification
# Comme avant
checkpoint = "camembert-base"
tokenizer = AutoTokenizer.from_pretrained(checkpoint)
model = AutoModelForSequenceClassification.from_pretrained(checkpoint)
sequences = [
"J'ai attendu un cours d'HuggingFace toute ma vie.",
"Je déteste tellement ça !"]
batch = tokenizer(sequences, padding=True, truncation=True, return_tensors="pt")
# C'est nouveau
batch["labels"] = torch.tensor([1, 1])
optimizer = AdamW(model.parameters())
loss = model(**batch).loss
loss.backward()
optimizer.step()
from datasets import load_dataset
raw_datasets = load_dataset("paws-x", "fr")
raw_datasets
raw_train_dataset = raw_datasets["train"]
raw_train_dataset[0]
raw_train_dataset.features
from transformers import AutoTokenizer
checkpoint = "camembert-base"
tokenizer = AutoTokenizer.from_pretrained(checkpoint)
tokenized_sentences_1 = tokenizer(raw_datasets["train"]["sentence1"])
tokenized_sentences_2 = tokenizer(raw_datasets["train"]["sentence2"])
inputs = tokenizer("C'est la première phrase.", "C'est la deuxième.")
inputs
tokenizer.convert_ids_to_tokens(inputs["input_ids"])
tokenized_dataset = tokenizer(
raw_datasets["train"]["sentence1"],
raw_datasets["train"]["sentence2"],
padding=True,
truncation=True,
)
def tokenize_function(example):
return tokenizer(example["sentence1"], example["sentence2"], truncation=True)
tokenized_datasets = raw_datasets.map(tokenize_function, batched=True)
tokenized_datasets
from transformers import DataCollatorWithPadding
data_collator = DataCollatorWithPadding(tokenizer=tokenizer)
samples = tokenized_datasets["train"][:8]
samples = {k: v for k, v in samples.items() if k not in ["idx", "sentence1", "sentence2"]}
[len(x) for x in samples["input_ids"]]
batch = data_collator(samples)
{k: v.shape for k, v in batch.items()}<jupyter_output><empty_output> | notebooks/course/fr/chapter3/section2_pt.ipynb/0 | {
"file_path": "notebooks/course/fr/chapter3/section2_pt.ipynb",
"repo_id": "notebooks",
"token_count": 784
} | 156 |
<jupyter_start><jupyter_text>Entraîner un nouveau *tokenizer* à partir d'un ancien Installez les bibliothèques 🤗 *Transformers* et 🤗 *Datasets* pour exécuter ce *notebook*.<jupyter_code>!pip install datasets transformers[sentencepiece]
!apt install git-lfs<jupyter_output><empty_output><jupyter_text>Vous aurez besoin de configurer git, adaptez votre email et votre nom dans la cellule suivante.<jupyter_code>!git config --global user.email "you@example.com"
!git config --global user.name "Your Name"<jupyter_output><empty_output><jupyter_text>Vous devrez également être connecté au Hub d'Hugging Face. Exécutez ce qui suit et entrez vos informations d'identification.<jupyter_code>from huggingface_hub import notebook_login
notebook_login()
from datasets import load_dataset
# Le chargement peut prendre quelques minutes, alors prenez un café ou un thé pendant que vous attendez !
raw_datasets = load_dataset("code_search_net", "python")
raw_datasets["train"]
print(raw_datasets["train"][123456]["whole_func_string"])
# Ne décommentez pas la ligne suivante à moins que votre jeu de données soit petit !
# training_corpus = [raw_datasets["train"][i: i + 1000]["whole_func_string"] for i in range(0, len(raw_datasets["train"]), 1000)]
training_corpus = (
raw_datasets["train"][i : i + 1000]["whole_func_string"]
for i in range(0, len(raw_datasets["train"]), 1000)
)
gen = (i for i in range(10))
print(list(gen))
print(list(gen))
def get_training_corpus():
return (
raw_datasets["train"][i : i + 1000]["whole_func_string"]
for i in range(0, len(raw_datasets["train"]), 1000)
)
training_corpus = get_training_corpus()
def get_training_corpus():
dataset = raw_datasets["train"]
for start_idx in range(0, len(dataset), 1000):
samples = dataset[start_idx : start_idx + 1000]
yield samples["whole_func_string"]
from transformers import AutoTokenizer
old_tokenizer = AutoTokenizer.from_pretrained("asi/gpt-fr-cased-base")
example = '''def add_numbers(a, b):
"""Add the two numbers `a` and `b`."""
return a + b'''
tokens = old_tokenizer.tokenize(example)
tokens
tokenizer = old_tokenizer.train_new_from_iterator(training_corpus, 52000) # prend un peu de temps
tokens = tokenizer.tokenize(example)
tokens
print(len(tokens))
print(len(old_tokenizer.tokenize(example)))
example = """class LinearLayer():
def __init__(self, input_size, output_size):
self.weight = torch.randn(input_size, output_size)
self.bias = torch.zeros(output_size)
def __call__(self, x):
return x @ self.weights + self.bias
"""
tokenizer.tokenize(example)
tokenizer.save_pretrained("code-search-net-tokenizer")
from huggingface_hub import notebook_login
notebook_login()
tokenizer.push_to_hub("code-search-net-tokenizer")
# Remplacez "huggingface-course" ci-dessous par votre espace de nom réel pour utiliser votre propre tokenizer
tokenizer = AutoTokenizer.from_pretrained("huggingface-course/code-search-net-tokenizer")<jupyter_output><empty_output> | notebooks/course/fr/chapter6/section2.ipynb/0 | {
"file_path": "notebooks/course/fr/chapter6/section2.ipynb",
"repo_id": "notebooks",
"token_count": 1147
} | 157 |
<jupyter_start><jupyter_text>Résumé (PyTorch) Installez les bibliothèques 🤗 *Datasets* et 🤗 *Transformers* pour exécuter ce *notebook*.<jupyter_code>!pip install datasets transformers[sentencepiece]
!pip install accelerate
# Pour exécuter l'entraînement sur TPU, vous devez décommenter la ligne suivante :
# !pip install cloud-tpu-client==0.10 torch==1.9.0 https://storage.googleapis.com/tpu-pytorch/wheels/torch_xla-1.9-cp37-cp37m-linux_x86_64.whl
!apt install git-lfs<jupyter_output><empty_output><jupyter_text>Vous aurez besoin de configurer git, adaptez votre email et votre nom dans la cellule suivante.<jupyter_code>!git config --global user.email "you@example.com"
!git config --global user.name "Your Name"<jupyter_output><empty_output><jupyter_text>Vous devrez également être connecté au Hub d'Hugging Face. Exécutez ce qui suit et entrez vos informations d'identification.<jupyter_code>from huggingface_hub import notebook_login
notebook_login()
from datasets import load_dataset
french_dataset = load_dataset("amazon_reviews_multi", "fr")
english_dataset = load_dataset("amazon_reviews_multi", "en")
french_dataset
def show_samples(dataset, num_samples=3, seed=42):
sample = dataset["train"].shuffle(seed=seed).select(range(num_samples))
for example in sample:
print(f"\n'>> Title: {example['review_title']}'")
print(f"'>> Review: {example['review_body']}'")
show_samples(french_dataset)
french_dataset.set_format("pandas")
french_df = french_dataset["train"][:]
# Afficher les comptes des 20 premiers produits
french_df["product_category"].value_counts()[:20]
def filter_books(example):
return (
example["product_category"] == "book"
or example["product_category"] == "digital_ebook_purchase"
)
french_dataset.reset_format()
french_books = french_dataset.filter(filter_books)
english_books = english_dataset.filter(filter_books)
show_samples(french_dataset)
from datasets import concatenate_datasets, DatasetDict
books_dataset = DatasetDict()
for split in english_books.keys():
books_dataset[split] = concatenate_datasets(
[english_books[split], french_books[split]]
)
books_dataset[split] = books_dataset[split].shuffle(seed=42)
# Quelques exemples
show_samples(books_dataset)
books_dataset = books_dataset.filter(lambda x: len(x["review_title"].split()) > 2)
from transformers import AutoTokenizer
model_checkpoint = "google/mt5-small"
tokenizer = AutoTokenizer.from_pretrained(model_checkpoint)
inputs = tokenizer("J'ai adoré lire les Hunger Games !")
inputs
tokenizer.convert_ids_to_tokens(inputs.input_ids)
max_input_length = 512
max_target_length = 30
def preprocess_function(examples):
model_inputs = tokenizer(
examples["review_body"], max_length=max_input_length, truncation=True
)
# Configurer le tokenizer pour les cibles
with tokenizer.as_target_tokenizer():
labels = tokenizer(
examples["review_title"], max_length=max_target_length, truncation=True
)
model_inputs["labels"] = labels["input_ids"]
return model_inputs
tokenized_datasets = books_dataset.map(preprocess_function, batched=True)
generated_summary = "J'ai absolument adoré lire les Hunger Games"
reference_summary = "J'ai adoré lire les Hunger Games"
!pip install rouge_score
from datasets import load_metric
rouge_score = load_metric("rouge")
scores = rouge_score.compute(
predictions=[generated_summary], references=[reference_summary]
)
scores
scores["rouge1"].mid
!pip install nltk
import nltk
nltk.download("punkt")
from nltk.tokenize import sent_tokenize
def three_sentence_summary(text):
return "\n".join(sent_tokenize(text)[:3])
print(three_sentence_summary(books_dataset["train"][1]["review_body"]))
def evaluate_baseline(dataset, metric):
summaries = [three_sentence_summary(text) for text in dataset["review_body"]]
return metric.compute(predictions=summaries, references=dataset["review_title"])
import pandas as pd
score = evaluate_baseline(books_dataset["validation"], rouge_score)
rouge_names = ["rouge1", "rouge2", "rougeL", "rougeLsum"]
rouge_dict = dict((rn, round(score[rn].mid.fmeasure * 100, 2)) for rn in rouge_names)
rouge_dict
from transformers import AutoModelForSeq2SeqLM
model = AutoModelForSeq2SeqLM.from_pretrained(model_checkpoint)
from transformers import Seq2SeqTrainingArguments
batch_size = 8
num_train_epochs = 8
# Montre la perte d'entraînement à chaque époque
logging_steps = len(tokenized_datasets["train"]) // batch_size
model_name = model_checkpoint.split("/")[-1]
args = Seq2SeqTrainingArguments(
output_dir=f"{model_name}-finetuned-amazon-en-fr",
evaluation_strategy="epoch",
learning_rate=5.6e-5,
per_device_train_batch_size=batch_size,
per_device_eval_batch_size=batch_size,
weight_decay=0.01,
save_total_limit=3,
num_train_epochs=num_train_epochs,
predict_with_generate=True,
logging_steps=logging_steps,
push_to_hub=True,
)
import numpy as np
def compute_metrics(eval_pred):
predictions, labels = eval_pred
# Décoder les résumés générés en texte
decoded_preds = tokenizer.batch_decode(predictions, skip_special_tokens=True)
# Remplacer -100 dans les étiquettes car nous ne pouvons pas les décoder
labels = np.where(labels != -100, labels, tokenizer.pad_token_id)
# Décoder les résumés de référence en texte
decoded_labels = tokenizer.batch_decode(labels, skip_special_tokens=True)
# ROUGE attend une nouvelle ligne après chaque phrase
decoded_preds = ["\n".join(sent_tokenize(pred.strip())) for pred in decoded_preds]
decoded_labels = ["\n".join(sent_tokenize(label.strip())) for label in decoded_labels]
# Calculer les scores ROUGE
result = rouge_score.compute(
predictions=decoded_preds, references=decoded_labels, use_stemmer=True
)
# Extraire les scores médians
result = {key: value.mid.fmeasure * 100 for key, value in result.items()}
return {k: round(v, 4) for k, v in result.items()}
from transformers import DataCollatorForSeq2Seq
data_collator = DataCollatorForSeq2Seq(tokenizer, model=model)
tokenized_datasets = tokenized_datasets.remove_columns(
books_dataset["train"].column_names
)
features = [tokenized_datasets["train"][i] for i in range(2)]
data_collator(features)
from transformers import Seq2SeqTrainer
trainer = Seq2SeqTrainer(
model,
args,
train_dataset=tokenized_datasets["train"],
eval_dataset=tokenized_datasets["validation"],
data_collator=data_collator,
tokenizer=tokenizer,
compute_metrics=compute_metrics,
)
trainer.train()
trainer.evaluate()
tokenized_datasets.set_format("torch")
model = AutoModelForSeq2SeqLM.from_pretrained(model_checkpoint)
from torch.utils.data import DataLoader
batch_size = 8
train_dataloader = DataLoader(
tokenized_datasets["train"],
shuffle=True,
collate_fn=data_collator,
batch_size=batch_size,
)
eval_dataloader = DataLoader(
tokenized_datasets["validation"], collate_fn=data_collator, batch_size=batch_size
)
from torch.optim import AdamW
optimizer = AdamW(model.parameters(), lr=2e-5)
from accelerate import Accelerator
accelerator = Accelerator()
model, optimizer, train_dataloader, eval_dataloader = accelerator.prepare(
model, optimizer, train_dataloader, eval_dataloader
)
from transformers import get_scheduler
num_train_epochs = 10
num_update_steps_per_epoch = len(train_dataloader)
num_training_steps = num_train_epochs * num_update_steps_per_epoch
lr_scheduler = get_scheduler(
"linear",
optimizer=optimizer,
num_warmup_steps=0,
num_training_steps=num_training_steps,
)
def postprocess_text(preds, labels):
preds = [pred.strip() for pred in preds]
labels = [label.strip() for label in labels]
# ROUGE attend une nouvelle ligne après chaque phrase
preds = ["\n".join(nltk.sent_tokenize(pred)) for pred in preds]
labels = ["\n".join(nltk.sent_tokenize(label)) for label in labels]
return preds, labels
from huggingface_hub import get_full_repo_name
model_name = "test-bert-finetuned-squad-accelerate"
repo_name = get_full_repo_name(model_name)
repo_name
from huggingface_hub import Repository
output_dir = "results-mt5-finetuned-squad-accelerate"
repo = Repository(output_dir, clone_from=repo_name)
from tqdm.auto import tqdm
import torch
import numpy as np
progress_bar = tqdm(range(num_training_steps))
for epoch in range(num_train_epochs):
# Entraînement
model.train()
for step, batch in enumerate(train_dataloader):
outputs = model(**batch)
loss = outputs.loss
accelerator.backward(loss)
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
progress_bar.update(1)
# Evaluation
model.eval()
for step, batch in enumerate(eval_dataloader):
with torch.no_grad():
generated_tokens = accelerator.unwrap_model(model).generate(
batch["input_ids"],
attention_mask=batch["attention_mask"],
)
generated_tokens = accelerator.pad_across_processes(
generated_tokens, dim=1, pad_index=tokenizer.pad_token_id
)
labels = batch["labels"]
# Si nous n'avons pas rempli la longueur maximale, nous devons également remplir les étiquettes
labels = accelerator.pad_across_processes(
batch["labels"], dim=1, pad_index=tokenizer.pad_token_id
)
generated_tokens = accelerator.gather(generated_tokens).cpu().numpy()
labels = accelerator.gather(labels).cpu().numpy()
# Remplacer -100 dans les étiquettes car nous ne pouvons pas les décoder
labels = np.where(labels != -100, labels, tokenizer.pad_token_id)
if isinstance(generated_tokens, tuple):
generated_tokens = generated_tokens[0]
decoded_preds = tokenizer.batch_decode(
generated_tokens, skip_special_tokens=True
)
decoded_labels = tokenizer.batch_decode(labels, skip_special_tokens=True)
decoded_preds, decoded_labels = postprocess_text(
decoded_preds, decoded_labels
)
rouge_score.add_batch(predictions=decoded_preds, references=decoded_labels)
# Calculer les métriques
result = rouge_score.compute()
# Extraire les scores médians de ROUGE
result = {key: value.mid.fmeasure * 100 for key, value in result.items()}
result = {k: round(v, 4) for k, v in result.items()}
print(f"Epoch {epoch}:", result)
# Sauvegarder et télécharger
accelerator.wait_for_everyone()
unwrapped_model = accelerator.unwrap_model(model)
unwrapped_model.save_pretrained(output_dir, save_function=accelerator.save)
if accelerator.is_main_process:
tokenizer.save_pretrained(output_dir)
repo.push_to_hub(
commit_message=f"Training in progress epoch {epoch}", blocking=False
)
from transformers import pipeline
hub_model_id = "huggingface-course/mt5-small-finetuned-amazon-en-fr"
summarizer = pipeline("summarization", model=hub_model_id)
def print_summary(idx):
review = books_dataset["test"][idx]["review_body"]
title = books_dataset["test"][idx]["review_title"]
summary = summarizer(books_dataset["test"][idx]["review_body"])[0]["summary_text"]
print(f"'>>> Review: {review}'")
print(f"\n'>>> Title: {title}'")
print(f"\n'>>> Summary: {summary}'")
print_summary(100)
print_summary(0)<jupyter_output><empty_output> | notebooks/course/fr/chapter7/section5_pt.ipynb/0 | {
"file_path": "notebooks/course/fr/chapter7/section5_pt.ipynb",
"repo_id": "notebooks",
"token_count": 4623
} | 158 |
<jupyter_start><jupyter_text>Fonctions avancées d'Interface Installez les bibliothèques 🤗 Transformers et 🤗 Gradio pour exécuter ce *notebook*.<jupyter_code>!pip install datasets transformers[sentencepiece]
!pip install gradio
import random
import gradio as gr
def chat(message, history):
history = history or []
if message.startswith("Combien"):
response = random.randint(1, 10)
elif message.startswith("Comment"):
response = random.choice(["Super", "Bon", "Ok", "Mal"])
elif message.startswith("Où"):
response = random.choice(["Ici", "Là", "Quelque part"])
else:
response = "Je ne sais pas."
history.append((message, response))
return history, history
iface = gr.Interface(
chat,
["text", "state"],
["chatbot", "state"],
allow_screenshot=False,
allow_flagging="never",
)
iface.launch()
import requests
import tensorflow as tf
import gradio as gr
inception_net = tf.keras.applications.MobileNetV2() # charger le modèle
# Télécharger des étiquettes lisibles par l'homme pour ImageNet
response = requests.get("https://git.io/JJkYN")
labels = response.text.split("\n")
def classify_image(inp):
inp = inp.reshape((-1, 224, 224, 3))
inp = tf.keras.applications.mobilenet_v2.preprocess_input(inp)
prediction = inception_net.predict(inp).flatten()
return {labels[i]: float(prediction[i]) for i in range(1000)}
image = gr.Image(shape=(224, 224))
label = gr.Label(num_top_classes=3)
title = "Classification des images avec Gradio + Exemple d'interprétation"
gr.Interface(
fn=classify_image, inputs=image, outputs=label, interpretation="default", title=title
).launch()<jupyter_output><empty_output> | notebooks/course/fr/chapter9/section6.ipynb/0 | {
"file_path": "notebooks/course/fr/chapter9/section6.ipynb",
"repo_id": "notebooks",
"token_count": 647
} | 159 |
<jupyter_start><jupyter_text>CLIP Guided Stable Diffusion using [d🧨ffusers](https://github.com/huggingface/diffusers) This notebook shows how to do CLIP guidance with Stable diffusion using diffusers libray. This allows you to use newly released [CLIP models by LAION AI.](https://huggingface.co/laion).This notebook is based on the following amazing repos, all credits to the original authors!- https://github.com/Jack000/glid-3-xl- https://github.dev/crowsonkb/k-diffusion Initial Setup<jupyter_code>#@title Instal dependancies
!pip install -qqq diffusers==0.11.1 transformers ftfy gradio accelerate<jupyter_output>[K |████████████████████████████████| 229 kB 8.9 MB/s
[K |████████████████████████████████| 4.9 MB 68.2 MB/s
[K |████████████████████████████████| 53 kB 2.2 MB/s
[K |████████████████████████████████| 5.3 MB 51.1 MB/s
[K |████████████████████████████████| 163 kB 68.4 MB/s
[K |████████████████████████████████| 6.6 MB 46.5 MB/s
[K |████████████████████████████████| 55 kB 4.4 MB/s
[K |████████████████████████████████| 2.3 MB 56.0 MB/s
[K |████████████████████████████████| 57 kB 6.2 MB/s
[K |████████████████████████████████| 270 kB 48.4 MB/s
[K |████████████████████████████████| 112 kB 58.6 MB/s
[K |████████████████████████████████| 84 kB 4.2 MB/s
[K |████████████████████████████████| 54 kB 3.8 MB/s
[K |████████████████████████████████| 84 kB 2.4 MB/s
[K |████████████████████████████████| 212 kB 12.2 MB/s
[K |████████████████████████████████| 63 kB 2.7 MB/s
[K |██████████████████████████████[...]<jupyter_text>Authenticate with Hugging Face HubTo use private and gated models on 🤗 Hugging Face Hub, login is required. If you are only using a public checkpoint (such as `CompVis/stable-diffusion-v1-4` in this notebook), you can skip this step.<jupyter_code>#@title Login
from huggingface_hub import notebook_login
notebook_login()<jupyter_output>Login successful
Your token has been saved to /root/.huggingface/token<jupyter_text>CLIP Guided Stable Diffusion<jupyter_code>#@title Load the pipeline
import torch
from PIL import Image
from diffusers import LMSDiscreteScheduler, DiffusionPipeline, PNDMScheduler
from transformers import CLIPFeatureExtractor, CLIPModel
model_id = "CompVis/stable-diffusion-v1-4" #@param {type: "string"}
clip_model_id = "laion/CLIP-ViT-B-32-laion2B-s34B-b79K" #@param ["laion/CLIP-ViT-B-32-laion2B-s34B-b79K", "laion/CLIP-ViT-L-14-laion2B-s32B-b82K", "laion/CLIP-ViT-H-14-laion2B-s32B-b79K", "laion/CLIP-ViT-g-14-laion2B-s12B-b42K", "openai/clip-vit-base-patch32", "openai/clip-vit-base-patch16", "openai/clip-vit-large-patch14"] {allow-input: true}
scheduler = "plms" #@param ['plms', 'lms']
def image_grid(imgs, rows, cols):
assert len(imgs) == rows*cols
w, h = imgs[0].size
grid = Image.new('RGB', size=(cols*w, rows*h))
grid_w, grid_h = grid.size
for i, img in enumerate(imgs):
grid.paste(img, box=(i%cols*w, i//cols*h))
return grid
if scheduler == "lms":
scheduler = LMSDiscreteScheduler(beta_start=0.00085, beta_end=0.012, beta_schedule="scaled_linear")
else:
scheduler = PNDMScheduler.from_config(model_id, subfolder="scheduler")
feature_extractor = CLIPFeatureExtractor.from_pretrained(clip_model_id)
clip_model = CLIPModel.from_pretrained(clip_model_id, torch_dtype=torch.float16)
guided_pipeline = DiffusionPipeline.from_pretrained(
model_id,
custom_pipeline="clip_guided_stable_diffusion",
custom_revision="main", # TODO: remove if diffusers>=0.12.0
clip_model=clip_model,
feature_extractor=feature_extractor,
scheduler=scheduler,
torch_dtype=torch.float16,
)
guided_pipeline = guided_pipeline.to("cuda")
#@title Generate with Gradio Demo
import gradio as gr
import torch
from torch import autocast
from diffusers import StableDiffusionPipeline
from PIL import Image
last_model = "laion/CLIP-ViT-B-32-laion2B-s34B-b79K"
def infer(prompt, clip_prompt, samples, steps, clip_scale, scale, seed, clip_model, use_cutouts, num_cutouts):
global last_model
print(last_model)
if(last_model == clip_model):
guided_pipeline = create_clip_guided_pipeline(model_id, clip_model_id)
guided_pipeline = guided_pipeline.to("cuda")
last_model = clip_model
prompt = prompt
clip_prompt = clip_prompt
num_samples = samples
num_inference_steps = steps
guidance_scale = scale
clip_guidance_scale = clip_scale
if(use_cutouts):
use_cutouts = "True"
else:
use_cutouts = "False"
unfreeze_unet = "True"
unfreeze_vae = "True"
seed = seed
if unfreeze_unet == "True":
guided_pipeline.unfreeze_unet()
else:
guided_pipeline.freeze_unet()
if unfreeze_vae == "True":
guided_pipeline.unfreeze_vae()
else:
guided_pipeline.freeze_vae()
generator = torch.Generator(device="cuda").manual_seed(seed)
images = []
for i in range(num_samples):
image = guided_pipeline(
prompt,
clip_prompt=clip_prompt if clip_prompt.strip() != "" else None,
num_inference_steps=num_inference_steps,
guidance_scale=guidance_scale,
clip_guidance_scale=clip_guidance_scale,
num_cutouts=num_cutouts,
use_cutouts=use_cutouts == "True",
generator=generator,
).images[0]
images.append(image)
#image_grid(images, 1, num_samples)
return images
css = """
.gradio-container {
font-family: 'IBM Plex Sans', sans-serif;
}
.gr-button {
color: white;
border-color: black;
background: black;
}
input[type='range'] {
accent-color: black;
}
.dark input[type='range'] {
accent-color: #dfdfdf;
}
.container {
max-width: 730px;
margin: auto;
padding-top: 1.5rem;
}
#gallery {
min-height: 22rem;
margin-bottom: 15px;
margin-left: auto;
margin-right: auto;
border-bottom-right-radius: .5rem !important;
border-bottom-left-radius: .5rem !important;
}
#gallery>div>.h-full {
min-height: 20rem;
}
.details:hover {
text-decoration: underline;
}
.gr-button {
white-space: nowrap;
}
.gr-button:focus {
border-color: rgb(147 197 253 / var(--tw-border-opacity));
outline: none;
box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
--tw-border-opacity: 1;
--tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
--tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(3px var(--tw-ring-offset-width)) var(--tw-ring-color);
--tw-ring-color: rgb(191 219 254 / var(--tw-ring-opacity));
--tw-ring-opacity: .5;
}
#advanced-btn {
font-size: .7rem !important;
line-height: 19px;
margin-top: 12px;
margin-bottom: 12px;
padding: 2px 8px;
border-radius: 14px !important;
}
#advanced-options {
display: none;
margin-bottom: 20px;
}
.footer {
margin-bottom: 45px;
margin-top: 35px;
text-align: center;
border-bottom: 1px solid #e5e5e5;
}
.footer>p {
font-size: .8rem;
display: inline-block;
padding: 0 10px;
transform: translateY(10px);
background: white;
}
.dark .footer {
border-color: #303030;
}
.dark .footer>p {
background: #0b0f19;
}
.acknowledgments h4{
margin: 1.25em 0 .25em 0;
font-weight: bold;
font-size: 115%;
}
"""
block = gr.Blocks(css=css)
examples = [
[
'A high tech solarpunk utopia in the Amazon rainforest',
2,
45,
7.5,
1024,
],
[
'A pikachu fine dining with a view to the Eiffel Tower',
2,
45,
7,
1024,
],
[
'A mecha robot in a favela in expressionist style',
2,
45,
7,
1024,
],
[
'an insect robot preparing a delicious meal',
2,
45,
7,
1024,
],
[
"A small cabin on top of a snowy mountain in the style of Disney, artstation",
2,
45,
7,
1024,
],
]
with block:
gr.HTML(
"""
<div style="text-align: center; max-width: 650px; margin: 0 auto;">
<div
style="
display: inline-flex;
align-items: center;
gap: 0.8rem;
font-size: 1.75rem;
"
>
<svg
width="0.65em"
height="0.65em"
viewBox="0 0 115 115"
fill="none"
xmlns="http://www.w3.org/2000/svg"
>
<rect width="23" height="23" fill="white"></rect>
<rect y="69" width="23" height="23" fill="white"></rect>
<rect x="23" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="23" y="69" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="46" width="23" height="23" fill="white"></rect>
<rect x="46" y="69" width="23" height="23" fill="white"></rect>
<rect x="69" width="23" height="23" fill="black"></rect>
<rect x="69" y="69" width="23" height="23" fill="black"></rect>
<rect x="92" width="23" height="23" fill="#D9D9D9"></rect>
<rect x="92" y="69" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="115" y="46" width="23" height="23" fill="white"></rect>
<rect x="115" y="115" width="23" height="23" fill="white"></rect>
<rect x="115" y="69" width="23" height="23" fill="#D9D9D9"></rect>
<rect x="92" y="46" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="92" y="115" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="92" y="69" width="23" height="23" fill="white"></rect>
<rect x="69" y="46" width="23" height="23" fill="white"></rect>
<rect x="69" y="115" width="23" height="23" fill="white"></rect>
<rect x="69" y="69" width="23" height="23" fill="#D9D9D9"></rect>
<rect x="46" y="46" width="23" height="23" fill="black"></rect>
<rect x="46" y="115" width="23" height="23" fill="black"></rect>
<rect x="46" y="69" width="23" height="23" fill="black"></rect>
<rect x="23" y="46" width="23" height="23" fill="#D9D9D9"></rect>
<rect x="23" y="115" width="23" height="23" fill="#AEAEAE"></rect>
<rect x="23" y="69" width="23" height="23" fill="black"></rect>
</svg>
<h1 style="font-weight: 900; margin-bottom: 7px;">
CLIP Guided Stable Diffusion Demo
</h1>
</div>
<p style="margin-bottom: 10px; font-size: 94%">
Demo allows you to use newly released <a href="https://huggingface.co/laion" style="text-decoration: underline">CLIP models by LAION AI</a> with Stable Diffusion
</p>
</div>
"""
)
with gr.Group():
with gr.Box():
with gr.Row().style(mobile_collapse=False, equal_height=True):
text = gr.Textbox(
label="Enter your prompt",
show_label=False,
max_lines=1,
placeholder="Enter your prompt",
).style(
border=(True, False, True, True),
rounded=(True, False, False, True),
container=False,
)
btn = gr.Button("Generate image").style(
margin=False,
rounded=(False, True, True, False),
)
gallery = gr.Gallery(
label="Generated images", show_label=False, elem_id="gallery"
).style(grid=[2], height="auto")
advanced_button = gr.Button("Advanced options", elem_id="advanced-btn")
with gr.Row(elem_id="advanced-options"):
with gr.Column():
clip_prompt = gr.Textbox(
label="Enter a CLIP prompt if you want it to differ",
show_label=False,
max_lines=1,
placeholder="Enter a CLIP prompt if you want it to differ",
)
with gr.Row():
samples = gr.Slider(label="Images", minimum=1, maximum=2, value=1, step=1)
steps = gr.Slider(label="Steps", minimum=1, maximum=50, value=45, step=1)
with gr.Row():
use_cutouts = gr.Checkbox(label="Use cutouts?")
num_cutouts = gr.Slider(label="Cutouts", minimum=1, maximum=16, value=4, step=1)
with gr.Row():
with gr.Column():
clip_model = gr.Dropdown(["laion/CLIP-ViT-B-32-laion2B-s34B-b79K", "laion/CLIP-ViT-L-14-laion2B-s32B-b82K", "laion/CLIP-ViT-H-14-laion2B-s32B-b79K", "laion/CLIP-ViT-g-14-laion2B-s12B-b42K", "openai/clip-vit-base-patch32", "openai/clip-vit-base-patch16", "openai/clip-vit-large-patch14"], value="laion/CLIP-ViT-B-32-laion2B-s34B-b79K", show_label=False)
with gr.Row():
scale = gr.Slider(
label="Guidance Scale", minimum=0, maximum=50, value=7.5, step=0.1
)
seed = gr.Slider(
label="Seed",
minimum=0,
maximum=2147483647,
step=1,
randomize=True,
)
clip_scale = gr.Slider(
label="CLIP Guidance Scale", minimum=0, maximum=5000, value=100, step=1
)
ex = gr.Examples(examples=examples, fn=infer, inputs=[text, samples, steps, scale, clip_scale, seed], outputs=gallery, cache_examples=False)
ex.dataset.headers = [""]
text.submit(infer, inputs=[text, clip_prompt, samples, steps, scale, clip_scale, seed, clip_model, use_cutouts, num_cutouts], outputs=gallery)
btn.click(infer, inputs=[text, clip_prompt, samples, steps, scale, clip_scale, seed, clip_model, use_cutouts, num_cutouts], outputs=gallery)
advanced_button.click(
None,
[],
text,
_js="""
() => {
const options = document.querySelector("body > gradio-app").querySelector("#advanced-options");
options.style.display = ["none", ""].includes(options.style.display) ? "flex" : "none";
}""",
)
gr.HTML(
"""
<div class="footer">
<p>Model by <a href="https://huggingface.co/CompVis" style="text-decoration: underline;" target="_blank">CompVis</a> and <a href="https://huggingface.co/stabilityai" style="text-decoration: underline;" target="_blank">Stability AI</a> - Gradio Demo by 🤗 Hugging Face
</p>
</div>
<div class="acknowledgments">
<p><h4>LICENSE</h4>
The model is licensed with a <a href="https://huggingface.co/spaces/CompVis/stable-diffusion-license" style="text-decoration: underline;" target="_blank">CreativeML Open RAIL-M</a> license. The authors claim no rights on the outputs you generate, you are free to use them and are accountable for their use which must not go against the provisions set in this license. The license forbids you from sharing any content that violates any laws, produce any harm to a person, disseminate any personal information that would be meant for harm, spread misinformation and target vulnerable groups. For the full list of restrictions please <a href="https://huggingface.co/spaces/CompVis/stable-diffusion-license" target="_blank" style="text-decoration: underline;" target="_blank">read the license</a></p>
<p><h4>Biases and content acknowledgment</h4>
Despite how impressive being able to turn text into image is, beware to the fact that this model may output content that reinforces or exacerbates societal biases, as well as realistic faces, pornography and violence. The model was trained on the <a href="https://laion.ai/blog/laion-5b/" style="text-decoration: underline;" target="_blank">LAION-5B dataset</a>, which scraped non-curated image-text-pairs from the internet (the exception being the removal of illegal content) and is meant for research purposes. You can read more in the <a href="https://huggingface.co/CompVis/stable-diffusion-v1-4" style="text-decoration: underline;" target="_blank">model card</a></p>
</div>
"""
)
block.launch(debug=True)
#@title Generate on Colab
prompt = "fantasy book cover, full moon, fantasy forest landscape, golden vector elements, fantasy magic, dark light night, intricate, elegant, sharp focus, illustration, highly detailed, digital painting, concept art, matte, art by WLOP and Artgerm and Albert Bierstadt, masterpiece" #@param {type: "string"}
#@markdown `clip_prompt` is optional, if you leave it blank the same prompt is sent to Stable Diffusion and CLIP
clip_prompt = "" #@param {type: "string"}
num_samples = 1 #@param {type: "number"}
num_inference_steps = 50 #@param {type: "number"}
guidance_scale = 7.5 #@param {type: "number"}
clip_guidance_scale = 100 #@param {type: "number"}
num_cutouts = 4 #@param {type: "number"}
use_cutouts = "False" #@param ["False", "True"]
unfreeze_unet = "True" #@param ["False", "True"]
unfreeze_vae = "True" #@param ["False", "True"]
seed = 3788086447 #@param {type: "number"}
if unfreeze_unet == "True":
guided_pipeline.unfreeze_unet()
else:
guided_pipeline.freeze_unet()
if unfreeze_vae == "True":
guided_pipeline.unfreeze_vae()
else:
guided_pipeline.freeze_vae()
generator = torch.Generator(device="cuda").manual_seed(seed)
images = []
for i in range(num_samples):
image = guided_pipeline(
prompt,
clip_prompt=clip_prompt if clip_prompt.strip() != "" else None,
num_inference_steps=num_inference_steps,
guidance_scale=guidance_scale,
clip_guidance_scale=clip_guidance_scale,
num_cutouts=num_cutouts,
use_cutouts=use_cutouts == "True",
generator=generator,
).images[0]
images.append(image)
image_grid(images, 1, num_samples)<jupyter_output><empty_output> | notebooks/diffusers/CLIP_Guided_Stable_diffusion_with_diffusers.ipynb/0 | {
"file_path": "notebooks/diffusers/CLIP_Guided_Stable_diffusion_with_diffusers.ipynb",
"repo_id": "notebooks",
"token_count": 9092
} | 160 |
<jupyter_start><jupyter_text>Run Dreambooth fine-tuned models for Stable Diffusion using d🧨ffusers This notebook allows you to run Stable Diffusion concepts trained via Dreambooth using 🤗 Hugging Face [🧨 Diffusers library](https://github.com/huggingface/diffusers). Train your own using [here]() and navigate the [public library concepts]() to pick yours. You may also want to use the [Spaces]() to browse the library_By using just 3-5 images you can teach new concepts to Stable Diffusion and personalize the model on your own images_ Differently from Textual Inversion, this approach trains the whole model, which can yield better results to the cost of bigger models.<jupyter_code>#@title Install and import requirements
!pip install -qqq diffusers==0.11.1 transformers gradio ftfy accelerate
import diffusers
import gradio
from PIL import Image
def image_grid(imgs, rows, cols):
assert len(imgs) == rows*cols
w, h = imgs[0].size
grid = Image.new('RGB', size=(cols*w, rows*h))
grid_w, grid_h = grid.size
for i, img in enumerate(imgs):
grid.paste(img, box=(i%cols*w, i//cols*h))
return grid
#@title Login to the Hugging Face Hub
#@markdown Optional step, do it if you want to run private concepts
from huggingface_hub import notebook_login
!git config --global credential.helper store
notebook_login()
#@title Load the model from the [Concepts Library](https://huggingface.co/sd-dreambooth-library). If you are new to Stable Diffusion, make sure you [read the LICENSE](https://github.com/CompVis/stable-diffusion/blob/main/LICENSE)
#@markdown You may also use a locally trained model by replacing the `model_id` to a path with the model locally or on Google Drive
from torch import autocast
from diffusers import StableDiffusionPipeline
import torch
model_id = "sd-dreambooth-library/cat-toy" #@param {type:"string"}
pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16).to("cuda")
#@title Run the Stable Diffusion pipeline with interactive UI Demo on Gradio
#@markdown Run this cell to get a Gradio UI like this to run your models
#@markdown 
import gradio as gr
def inference(prompt, num_samples):
all_images = []
images = pipe(prompt, num_images_per_prompt=num_samples, num_inference_steps=50, guidance_scale=7.5).images
all_images.extend(images)
return all_images
with gr.Blocks() as demo:
gr.HTML("<h2 style=\"font-size: 2em; font-weight: bold\" align=\"center\">Stable Diffusion Dreambooth - Run Concept</h2>")
with gr.Row():
with gr.Column():
prompt = gr.Textbox(label="prompt")
samples = gr.Slider(label="Samples",value=1)
run = gr.Button(value="Run")
with gr.Column():
gallery = gr.Gallery(show_label=False)
run.click(inference, inputs=[prompt,samples], outputs=gallery)
gr.Examples([["a photo of sks toy riding a bicycle", 1,1]], [prompt,samples], gallery, inference, cache_examples=False)
demo.launch(debug=True)
#@title Run the Stable Diffusion pipeline on Colab
#@markdown Don't forget to use the `sks` token in your prompt
from torch import autocast
prompt = "a photo of sks toy floating on a ramen bowl" #@param {type:"string"}
num_samples = 1 #@param {type:"number"}
num_rows = 2 #@param {type:"number"}
all_images = []
for _ in range(num_rows):
images = pipe(prompt, num_images_per_prompt=num_samples, num_inference_steps=50, guidance_scale=7.5).images
all_images.extend(images)
grid = image_grid(all_images, num_samples, num_rows)
grid<jupyter_output><empty_output> | notebooks/diffusers/sd_dreambooth_inference.ipynb/0 | {
"file_path": "notebooks/diffusers/sd_dreambooth_inference.ipynb",
"repo_id": "notebooks",
"token_count": 1238
} | 161 |
<jupyter_start><jupyter_text>Patch Time Series Transformer in HuggingFace - Getting StartedIn this blog, we provide examples of how to get started with PatchTST. We first demonstrate the forecasting capability of `PatchTST` on the Electricity data. We will then demonstrate the transfer learning capability of `PatchTST` by using the previously trained model to do zero-shot forecasting on the electrical transformer (ETTh1) dataset. The zero-shot forecasting performance will denote the `test` performance of the model in the `target` domain, without any training on the target domain. Subsequently, we will do linear probing and (then) finetuning of the pretrained model on the `train` part of the target data and will validate the forecasting performance on the `test` part of the target data.The `PatchTST` model was proposed in A Time Series is Worth [64 Words: Long-term Forecasting with Transformers](https://huggingface.co/papers/2211.14730) by Yuqi Nie, Nam H. Nguyen, Phanwadee Sinthong, Jayant Kalagnanam and presented at ICLR 2023. Quick overview of PatchTSTAt a high level, the model vectorizes individual time series in a batch into patches of a given size and encodes the resulting sequence of vectors via a Transformer that then outputs the prediction length forecast via an appropriate head.The model is based on two key components: 1. segmentation of time series into subseries-level patches which serve as input tokens to the Transformer; 2. channel-independence where each channel contains a single univariate time series that shares the same embedding and Transformer weights across all the series, i.e. a [global](https://doi.org/10.1016/j.ijforecast.2021.03.004) univariate model. The patching design naturally has three-fold benefit: - local semantic information is retained in the embedding; - computation and memory usage of the attention maps are quadratically reduced given the same look-back window via strides between patches; and - the model can attend longer history via a trade-off between the patch length (input vector size) and the context length (number of sequences). In addition, `PatchTST` has a modular design to seamlessly support masked time series pre-training as well as direct time series forecasting.| ||:--:||(a) `PatchTST` model overview where a batch of \\(M\\) time series each of length \\(L\\) are processed independently (by reshaping them into the batch dimension) via a Transformer backbone and then reshaping the resulting batch back into \\(M \\) series of prediction length \\(T\\). Each *univariate* series can be processed in a supervised fashion (b) where the patched set of vectors is used to output the full prediction length or in a self-supervised fashion (c) where masked patches are predicted. | InstallationThis demo requires Hugging Face [`Transformers`](https://github.com/huggingface/transformers) for the model, and the IBM `tsfm` package for auxiliary data pre-processing.We can install both by cloning the `tsfm` repository and following the below steps.1. Clone the public IBM Time Series Foundation Model Repository [`tsfm`](https://github.com/ibm/tsfm). ```bash pip install git+https://github.com/IBM/tsfm.git ```2. Install Hugging Face [`Transformers`](https://github.com/huggingface/transformersinstallation) ```bash pip install transformers ```3. Test it with the following commands in a `python` terminal. ```python from transformers import PatchTSTConfig from tsfm_public.toolkit.dataset import ForecastDFDataset ``` Part 1: Forecasting on the Electricity datasetHere we train a `PatchTST` model directly on the Electricity dataset (available from https://github.com/zhouhaoyi/Informer2020), and evaluate its performance.<jupyter_code># Standard
import os
# Third Party
from transformers import (
EarlyStoppingCallback,
PatchTSTConfig,
PatchTSTForPrediction,
set_seed,
Trainer,
TrainingArguments,
)
import numpy as np
import pandas as pd
# First Party
from tsfm_public.toolkit.dataset import ForecastDFDataset
from tsfm_public.toolkit.time_series_preprocessor import TimeSeriesPreprocessor
from tsfm_public.toolkit.util import select_by_index
# supress some warnings
import warnings
warnings.filterwarnings("ignore", module="torch")<jupyter_output><empty_output><jupyter_text>Set seed<jupyter_code>set_seed(2023)<jupyter_output><empty_output><jupyter_text>Load and prepare datasets In the next cell, please adjust the following parameters to suit your application: - `dataset_path`: path to local .csv file, or web address to a csv file for the data of interest. Data is loaded with pandas, so anything supported by `pd.read_csv` is supported: (https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.read_csv.html). - `timestamp_column`: column name containing timestamp information, use `None` if there is no such column. - `id_columns`: List of column names specifying the IDs of different time series. If no ID column exists, use `[]`. - `forecast_columns`: List of columns to be modeled - `context_length`: The amount of historical data used as input to the model. Windows of the input time series data with length equal to `context_length` will be extracted from the input dataframe. In the case of a multi-time series dataset, the context windows will be created so that they are contained within a single time series (i.e., a single ID). - `forecast_horizon`: Number of timestamps to forecast in the future. - `train_start_index`, `train_end_index`: the start and end indices in the loaded data which delineate the training data. - `valid_start_index`, `eval_end_index`: the start and end indices in the loaded data which delineate the validation data. - `test_start_index`, `eval_end_index`: the start and end indices in the loaded data which delineate the test data. - `patch_length`: The patch length for the `PatchTST` model. It is recommended to choose a value that evenly divides `context_length`. - `num_workers`: Number of CPU workers in the PyTorch dataloader. - `batch_size`: Batch size.The data is first loaded into a Pandas dataframe and split into training, validation, and test parts. Then the Pandas dataframes are converted to the appropriate PyTorch dataset required for training.<jupyter_code># The ECL data is available from https://github.com/zhouhaoyi/Informer2020?tab=readme-ov-file#data
dataset_path = "~/data/ECL.csv"
timestamp_column = "date"
id_columns = []
context_length = 512
forecast_horizon = 96
patch_length = 16
num_workers = 16 # Reduce this if you have low number of CPU cores
batch_size = 64 # Adjust according to GPU memory
data = pd.read_csv(
dataset_path,
parse_dates=[timestamp_column],
)
forecast_columns = list(data.columns[1:])
# get split
num_train = int(len(data) * 0.7)
num_test = int(len(data) * 0.2)
num_valid = len(data) - num_train - num_test
border1s = [
0,
num_train - context_length,
len(data) - num_test - context_length,
]
border2s = [num_train, num_train + num_valid, len(data)]
train_start_index = border1s[0] # None indicates beginning of dataset
train_end_index = border2s[0]
# we shift the start of the evaluation period back by context length so that
# the first evaluation timestamp is immediately following the training data
valid_start_index = border1s[1]
valid_end_index = border2s[1]
test_start_index = border1s[2]
test_end_index = border2s[2]
train_data = select_by_index(
data,
id_columns=id_columns,
start_index=train_start_index,
end_index=train_end_index,
)
valid_data = select_by_index(
data,
id_columns=id_columns,
start_index=valid_start_index,
end_index=valid_end_index,
)
test_data = select_by_index(
data,
id_columns=id_columns,
start_index=test_start_index,
end_index=test_end_index,
)
time_series_preprocessor = TimeSeriesPreprocessor(
timestamp_column=timestamp_column,
id_columns=id_columns,
input_columns=forecast_columns,
output_columns=forecast_columns,
scaling=True,
)
time_series_preprocessor = time_series_preprocessor.train(train_data)
train_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(train_data),
id_columns=id_columns,
timestamp_column="date",
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)
valid_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(valid_data),
id_columns=id_columns,
timestamp_column="date",
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)
test_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(test_data),
id_columns=id_columns,
timestamp_column="date",
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)<jupyter_output><empty_output><jupyter_text>Configure the PatchTST modelNext, we instantiate a randomly initialized `PatchTST` model with a configuration. The settings below control the different hyperparameters related to the architecture. - `num_input_channels`: the number of input channels (or dimensions) in the time series data. This is automatically set to the number for forecast columns. - `context_length`: As described above, the amount of historical data used as input to the model. - `patch_length`: The length of the patches extracted from the context window (of length `context_length`). - `patch_stride`: The stride used when extracting patches from the context window. - `random_mask_ratio`: The fraction of input patches that are completely masked for pretraining the model. - `d_model`: Dimension of the transformer layers. - `num_attention_heads`: The number of attention heads for each attention layer in the Transformer encoder. - `num_hidden_layers`: The number of encoder layers. - `ffn_dim`: Dimension of the intermediate (often referred to as feed-forward) layer in the encoder. - `dropout`: Dropout probability for all fully connected layers in the encoder. - `head_dropout`: Dropout probability used in the head of the model. - `pooling_type`: Pooling of the embedding. `"mean"`, `"max"` and `None` are supported. - `channel_attention`: Activate the channel attention block in the Transformer to allow channels to attend to each other. - `scaling`: Whether to scale the input targets via "mean" scaler, "std" scaler, or no scaler if `None`. If `True`, the scaler is set to `"mean"`. - `loss`: The loss function for the model corresponding to the `distribution_output` head. For parametric distributions it is the negative log-likelihood (`"nll"`) and for point estimates it is the mean squared error `"mse"`. - `pre_norm`: Normalization is applied before self-attention if pre_norm is set to `True`. Otherwise, normalization is applied after residual block. - `norm_type`: Normalization at each Transformer layer. Can be `"BatchNorm"` or `"LayerNorm"`.For full details on the parameters, we refer to the [documentation](https://huggingface.co/docs/transformers/main/en/model_doc/patchtsttransformers.PatchTSTConfig).<jupyter_code>config = PatchTSTConfig(
num_input_channels=len(forecast_columns),
context_length=context_length,
patch_length=patch_length,
patch_stride=patch_length,
prediction_length=forecast_horizon,
random_mask_ratio=0.4,
d_model=128,
num_attention_heads=16,
num_hidden_layers=3,
ffn_dim=256,
dropout=0.2,
head_dropout=0.2,
pooling_type=None,
channel_attention=False,
scaling="std",
loss="mse",
pre_norm=True,
norm_type="batchnorm",
)
model = PatchTSTForPrediction(config)<jupyter_output><empty_output><jupyter_text>Train modelNext, we can leverage the Hugging Face [Trainer](https://huggingface.co/docs/transformers/main_classes/trainer) class to train the model based on the direct forecasting strategy. We first define the [TrainingArguments](https://huggingface.co/docs/transformers/main_classes/trainertransformers.TrainingArguments) which lists various hyperparameters for training such as the number of epochs, learning rate and so on.<jupyter_code>training_args = TrainingArguments(
output_dir="./checkpoint/patchtst/electricity/pretrain/output/",
overwrite_output_dir=True,
# learning_rate=0.001,
num_train_epochs=100,
do_eval=True,
evaluation_strategy="epoch",
per_device_train_batch_size=batch_size,
per_device_eval_batch_size=batch_size,
dataloader_num_workers=num_workers,
save_strategy="epoch",
logging_strategy="epoch",
save_total_limit=3,
logging_dir="./checkpoint/patchtst/electricity/pretrain/logs/", # Make sure to specify a logging directory
load_best_model_at_end=True, # Load the best model when training ends
metric_for_best_model="eval_loss", # Metric to monitor for early stopping
greater_is_better=False, # For loss
label_names=["future_values"],
)
# Create the early stopping callback
early_stopping_callback = EarlyStoppingCallback(
early_stopping_patience=10, # Number of epochs with no improvement after which to stop
early_stopping_threshold=0.0001, # Minimum improvement required to consider as improvement
)
# define trainer
trainer = Trainer(
model=model,
args=training_args,
train_dataset=train_dataset,
eval_dataset=valid_dataset,
callbacks=[early_stopping_callback],
# compute_metrics=compute_metrics,
)
# pretrain
trainer.train()<jupyter_output>Detected kernel version 4.18.0, which is below the recommended minimum of 5.5.0; this can cause the process to hang. It is recommended to upgrade the kernel to the minimum version or higher.<jupyter_text>Evaluate the model on the test set of the source domainNext, we can leverage `trainer.evaluate()` to calculate test metrics. While this is not the target metric to judge in this task, it provides a reasonable check that the pretrained model has trained properly.Note that the training and evaluation loss for `PatchTST` is the Mean Squared Error (MSE) loss. Hence, we do not separately compute the MSE metric in any of the following evaluation experiments.<jupyter_code>results = trainer.evaluate(test_dataset)
print("Test result:")
print(results)<jupyter_output><empty_output><jupyter_text>The MSE of `0.131` is very close to the value reported for the Electricity dataset in the original `PatchTST` paper. Save model<jupyter_code>save_dir = "patchtst/electricity/model/pretrain/"
os.makedirs(save_dir, exist_ok=True)
trainer.save_model(save_dir)<jupyter_output><empty_output><jupyter_text>Part 2: Transfer Learning from Electricity to ETTh1In this section, we will demonstrate the transfer learning capability of the `PatchTST` model.We use the model pre-trained on the Electricity dataset to do zero-shot forecasting on the ETTh1 dataset.By Transfer Learning, we mean that we first pretrain the model for a forecasting task on a `source` dataset (which we did above on the `Electricity` dataset). Then, we will use the pretrained model for zero-shot forecasting on a `target` dataset. By zero-shot, we mean that we test the performance in the `target` domain without any additional training. We hope that the model gained enough knowledge from pretraining which can be transferred to a different dataset. Subsequently, we will do linear probing and (then) finetuning of the pretrained model on the `train` split of the target data and will validate the forecasting performance on the `test` split of the target data. In this example, the source dataset is the `Electricity` dataset and the target dataset is ETTh1. Transfer learning on ETTh1 data. All evaluations are on the `test` part of the `ETTh1` data.Step 1: Directly evaluate the electricity-pretrained model. This is the zero-shot performance. Step 2: Evaluate after doing linear probing. Step 3: Evaluate after doing full finetuning. Load ETTh datasetBelow, we load the `ETTh1` dataset as a Pandas dataframe. Next, we create 3 splits for training, validation, and testing. We then leverage the `TimeSeriesPreprocessor` class to prepare each split for the model.<jupyter_code>dataset = "ETTh1"
print(f"Loading target dataset: {dataset}")
dataset_path = f"https://raw.githubusercontent.com/zhouhaoyi/ETDataset/main/ETT-small/{dataset}.csv"
timestamp_column = "date"
id_columns = []
forecast_columns = ["HUFL", "HULL", "MUFL", "MULL", "LUFL", "LULL", "OT"]
train_start_index = None # None indicates beginning of dataset
train_end_index = 12 * 30 * 24
# we shift the start of the evaluation period back by context length so that
# the first evaluation timestamp is immediately following the training data
valid_start_index = 12 * 30 * 24 - context_length
valid_end_index = 12 * 30 * 24 + 4 * 30 * 24
test_start_index = 12 * 30 * 24 + 4 * 30 * 24 - context_length
test_end_index = 12 * 30 * 24 + 8 * 30 * 24
data = pd.read_csv(
dataset_path,
parse_dates=[timestamp_column],
)
train_data = select_by_index(
data,
id_columns=id_columns,
start_index=train_start_index,
end_index=train_end_index,
)
valid_data = select_by_index(
data,
id_columns=id_columns,
start_index=valid_start_index,
end_index=valid_end_index,
)
test_data = select_by_index(
data,
id_columns=id_columns,
start_index=test_start_index,
end_index=test_end_index,
)
time_series_preprocessor = TimeSeriesPreprocessor(
timestamp_column=timestamp_column,
id_columns=id_columns,
input_columns=forecast_columns,
output_columns=forecast_columns,
scaling=True,
)
time_series_preprocessor = time_series_preprocessor.train(train_data)
train_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(train_data),
id_columns=id_columns,
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)
valid_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(valid_data),
id_columns=id_columns,
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)
test_dataset = ForecastDFDataset(
time_series_preprocessor.preprocess(test_data),
id_columns=id_columns,
input_columns=forecast_columns,
output_columns=forecast_columns,
context_length=context_length,
prediction_length=forecast_horizon,
)<jupyter_output><empty_output><jupyter_text>Zero-shot forecasting on ETTHAs we are going to test forecasting performance out-of-the-box, we load the model which we pretrained above.<jupyter_code>finetune_forecast_model = PatchTSTForPrediction.from_pretrained(
"patchtst/electricity/model/pretrain/",
num_input_channels=len(forecast_columns),
head_dropout=0.7,
)
finetune_forecast_args = TrainingArguments(
output_dir="./checkpoint/patchtst/transfer/finetune/output/",
overwrite_output_dir=True,
learning_rate=0.0001,
num_train_epochs=100,
do_eval=True,
evaluation_strategy="epoch",
per_device_train_batch_size=batch_size,
per_device_eval_batch_size=batch_size,
dataloader_num_workers=num_workers,
report_to="tensorboard",
save_strategy="epoch",
logging_strategy="epoch",
save_total_limit=3,
logging_dir="./checkpoint/patchtst/transfer/finetune/logs/", # Make sure to specify a logging directory
load_best_model_at_end=True, # Load the best model when training ends
metric_for_best_model="eval_loss", # Metric to monitor for early stopping
greater_is_better=False, # For loss
label_names=["future_values"],
)
# Create a new early stopping callback with faster convergence properties
early_stopping_callback = EarlyStoppingCallback(
early_stopping_patience=10, # Number of epochs with no improvement after which to stop
early_stopping_threshold=0.001, # Minimum improvement required to consider as improvement
)
finetune_forecast_trainer = Trainer(
model=finetune_forecast_model,
args=finetune_forecast_args,
train_dataset=train_dataset,
eval_dataset=valid_dataset,
callbacks=[early_stopping_callback],
)
print("\n\nDoing zero-shot forecasting on target data")
result = finetune_forecast_trainer.evaluate(test_dataset)
print("Target data zero-shot forecasting result:")
print(result)<jupyter_output>Detected kernel version 4.18.0, which is below the recommended minimum of 5.5.0; this can cause the process to hang. It is recommended to upgrade the kernel to the minimum version or higher.<jupyter_text>As can be seen, with a zero-shot forecasting approach we obtain an MSE of 0.370 which is near to the state-of-the-art result in the original `PatchTST` paper.Next, let's see how we can do by performing linear probing, which involves training a linear layer on top of a frozen pre-trained model. Linear probing is often done to test the performance of features of a pretrained model. Linear probing on ETTh1We can do a quick linear probing on the `train` part of the target data to see any possible `test` performance improvement.<jupyter_code># Freeze the backbone of the model
for param in finetune_forecast_trainer.model.model.parameters():
param.requires_grad = False
print("\n\nLinear probing on the target data")
finetune_forecast_trainer.train()
print("Evaluating")
result = finetune_forecast_trainer.evaluate(test_dataset)
print("Target data head/linear probing result:")
print(result)<jupyter_output>Linear probing on the target data<jupyter_text>As can be seen, by only training a simple linear layer on top of the frozen backbone, the MSE decreased from 0.370 to 0.357, beating the originally reported results!<jupyter_code>save_dir = f"patchtst/electricity/model/transfer/{dataset}/model/linear_probe/"
os.makedirs(save_dir, exist_ok=True)
finetune_forecast_trainer.save_model(save_dir)
save_dir = f"patchtst/electricity/model/transfer/{dataset}/preprocessor/"
os.makedirs(save_dir, exist_ok=True)
time_series_preprocessor.save_pretrained(save_dir)<jupyter_output><empty_output><jupyter_text>Finally, let's see if we can get additional improvements by doing a full fine-tune of the model. Full fine-tune on ETTh1We can do a full model fine-tune (instead of probing the last linear layer as shown above) on the `train` part of the target data to see a possible `test` performance improvement. The code looks similar to the linear probing task above, except that we are not freezing any parameters.<jupyter_code># Reload the model
finetune_forecast_model = PatchTSTForPrediction.from_pretrained(
"patchtst/electricity/model/pretrain/",
num_input_channels=len(forecast_columns),
dropout=0.7,
head_dropout=0.7,
)
finetune_forecast_trainer = Trainer(
model=finetune_forecast_model,
args=finetune_forecast_args,
train_dataset=train_dataset,
eval_dataset=valid_dataset,
callbacks=[early_stopping_callback],
)
print("\n\nFinetuning on the target data")
finetune_forecast_trainer.train()
print("Evaluating")
result = finetune_forecast_trainer.evaluate(test_dataset)
print("Target data full finetune result:")
print(result)<jupyter_output>Detected kernel version 4.18.0, which is below the recommended minimum of 5.5.0; this can cause the process to hang. It is recommended to upgrade the kernel to the minimum version or higher.<jupyter_text>In this case, there is only a small improvement on the ETTh1 dataset with full fine-tuning. For other datasets there may be more substantial improvements. Let's save the model anyway.<jupyter_code>save_dir = f"patchtst/electricity/model/transfer/{dataset}/model/fine_tuning/"
os.makedirs(save_dir, exist_ok=True)
finetune_forecast_trainer.save_model(save_dir)<jupyter_output><empty_output> | notebooks/examples/patch_tst.ipynb/0 | {
"file_path": "notebooks/examples/patch_tst.ipynb",
"repo_id": "notebooks",
"token_count": 7448
} | 162 |
<jupyter_start><jupyter_text>Fine-tuning a 🤗 Transformers model on TPU with **Flax/JAX** In this notebook, we will see how to fine-tune one of the [🤗 Transformers](https://github.com/huggingface/transformers) models on TPU using [**Flax**](https://flax.readthedocs.io/en/latest/index.html). As can be seen on [this benchmark](https://github.com/huggingface/transformers/tree/master/examples/flax/text-classificationruntime-evaluation) using Flax/JAX on GPU/TPU is often much faster and can also be considerably cheaper than using PyTorch on GPU/TPU.[**Flax**](https://flax.readthedocs.io/en/latest/index.html) is a high-performance neural network library designed for flexibility built on top of JAX (see below). It aims to provide users with full control of their training code and is carefully designed to work well with JAX transformations such as `grad` and `pmap` (see the [Flax philosophy](https://flax.readthedocs.io/en/latest/philosophy.html)). For an introduction to Flax see the [Flax Basic Colab](https://flax.readthedocs.io/en/latest/notebooks/flax_basics.html) or the list of curated [Flax examples](https://flax.readthedocs.io/en/latest/examples.html).[**JAX**](https://jax.readthedocs.io/en/latest/index.html) is Autograd and XLA, brought together for high-performance numerical computing and machine learning research. It provides composable transformations of Python+NumPy programs: differentiate, vectorize, parallelize, Just-In-Time compile to GPU/TPU, and more. A great place for getting started with JAX is the [JAX 101 Tutorial](https://jax.readthedocs.io/en/latest/jax-101/index.html). If you're opening this Notebook on colab, you will probably need to install 🤗 Transformers and 🤗 Datasets as well as [Flax](https://github.com/google/flax.git) and [Optax](https://github.com/deepmind/optax). Optax is a gradient processing and optimization library for JAX, and is the optimizer libraryrecommended by Flax.<jupyter_code>%%capture
!pip install datasets
!pip install git+https://github.com/huggingface/transformers.git
!pip install flax
!pip install git+https://github.com/deepmind/optax.git<jupyter_output><empty_output><jupyter_text>You also will need to set up the TPU for JAX in this notebook. This can be done by executing the following lines.<jupyter_code>import jax.tools.colab_tpu
jax.tools.colab_tpu.setup_tpu()<jupyter_output><empty_output><jupyter_text>If everything is set up correctly, the following command should return a list of 8 TPU devices.<jupyter_code>jax.local_devices()<jupyter_output><empty_output><jupyter_text>If you're opening this notebook locally, make sure your environment has an install from the last version of those libraries.You can find a script version of this notebook to fine-tune your model [here](https://github.com/huggingface/transformers/tree/master/examples/flax/text-classification). As an example, we will fine-tune a pretrained [*auto-encoding model*](https://huggingface.co/transformers/model_summary.htmlautoencoding-models) on a text classification task of the [GLUE Benchmark](https://gluebenchmark.com/). Note that this notebook does not focus so much on data preprocessing, but rather on how to write a training and evaluation loop in **JAX/Flax**. If you want more detailed explanations regarding the data preprocessing, please check out [this](https://colab.research.google.com/github/huggingface/notebooks/blob/master/examples/text_classification.ipynbscrollTo=545PP3o8IrJV) notebook.The GLUE Benchmark is a group of nine classification tasks on sentences or pairs of sentences which are:[CoLA](https://nyu-mll.github.io/CoLA/), [MNLI](https://arxiv.org/abs/1704.05426), [MRPC](https://www.microsoft.com/en-us/download/details.aspx?id=52398), [QNLI](https://rajpurkar.github.io/SQuAD-explorer/), [QQP](https://data.quora.com/First-Quora-Dataset-Release-Question-Pairs), [RTE](https://aclweb.org/aclwiki/Recognizing_Textual_Entailment), [SST-2](https://nlp.stanford.edu/sentiment/index.html), [STS-B](http://ixa2.si.ehu.es/stswiki/index.php/STSbenchmark), [WNLI](https://cs.nyu.edu/faculty/davise/papers/WinogradSchemas/WS.html).We will see how to easily load the dataset for each one of those tasks and how to write a training loop in Flax. Each task is named by its acronym, with `mnli-mm` standing for the mismatched version of MNLI (so same training set as `mnli` but different validation and test sets):<jupyter_code>GLUE_TASKS = ["cola", "mnli", "mnli-mm", "mrpc", "qnli", "qqp", "rte", "sst2", "stsb", "wnli"]<jupyter_output><empty_output><jupyter_text>This notebook is built to run on any of the tasks in the list above, with any Flax/JAX model checkpoint from the [Model Hub](https://huggingface.co/models) as long as that model has a version with a classification head. Depending on the model you are using, you might need to adjust the batch size to avoid out-of-memory errors. Set those three parameters, then the rest of the notebook should run smoothly:<jupyter_code>task = "cola"
model_checkpoint = "bert-base-cased"
per_device_batch_size = 4<jupyter_output><empty_output><jupyter_text>We also quickly upload some telemetry - this tells us which examples and software versions are getting used so we know where to prioritize our maintenance efforts. We don't collect (or care about) any personally identifiable information, but if you'd prefer not to be counted, feel free to skip this step or delete this cell entirely.<jupyter_code>from transformers.utils import send_example_telemetry
send_example_telemetry("text_classification_notebook", framework="flax")<jupyter_output><empty_output><jupyter_text>Loading the dataset We will use the [🤗 Datasets](https://github.com/huggingface/datasets) library to download the data and get the metric we need to use for evaluation (to compare our model to the benchmark). This can be easily done with the functions `load_dataset` and `load_metric`.<jupyter_code>from datasets import load_dataset, load_metric<jupyter_output><empty_output><jupyter_text>Apart from `mnli-mm` being a special code, we can directly pass our task name to those functions. `load_dataset` will cache the dataset to avoid downloading it again the next time you run this cell.<jupyter_code>actual_task = "mnli" if task == "mnli-mm" else task
is_regression = task == "stsb"
raw_dataset = load_dataset("glue", actual_task)
metric = load_metric('glue', actual_task)<jupyter_output>/tmp/ipykernel_253934/2906828129.py:5: FutureWarning: load_metric is deprecated and will be removed in the next major version of datasets. Use 'evaluate.load' instead, from the new library 🤗 Evaluate: https://huggingface.co/docs/evaluate
metric = load_metric('glue', actual_task)<jupyter_text>Preprocessing the data Before we can feed those texts to our model, we need to preprocess them. This is done by a 🤗 Transformers `Tokenizer` which will (as the name indicates) tokenize the inputs. This includes converting the tokens to their corresponding IDs in the pretrained vocabulary and putting them in a format the model expects, as well as generate the other inputs that the model requires.To do all of this, we instantiate our tokenizer with the `AutoTokenizer.from_pretrained` method, which will ensure:- we get a tokenizer that corresponds to the model architecture we want to use,- we download the vocabulary used when pretraining this specific checkpoint.That vocabulary will be cached, so it's not downloaded again the next time we run the cell.<jupyter_code>from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained(model_checkpoint)<jupyter_output><empty_output><jupyter_text>To preprocess our dataset, we will thus need the names of the columns containing the sentence(s). The following dictionary keeps track of the correspondence task to column names:<jupyter_code>task_to_keys = {
"cola": ("sentence", None),
"mnli": ("premise", "hypothesis"),
"mnli-mm": ("premise", "hypothesis"),
"mrpc": ("sentence1", "sentence2"),
"qnli": ("question", "sentence"),
"qqp": ("question1", "question2"),
"rte": ("sentence1", "sentence2"),
"sst2": ("sentence", None),
"stsb": ("sentence1", "sentence2"),
"wnli": ("sentence1", "sentence2"),
}<jupyter_output><empty_output><jupyter_text>We can then write the function that will preprocess our samples. We just feed them to the `tokenizer` with the argument `truncation=True`. This will ensure that an input longer than what the model can handle will be truncated to the maximum length accepted by the model.<jupyter_code>sentence1_key, sentence2_key = task_to_keys[task]
def preprocess_function(examples):
texts = (
(examples[sentence1_key],) if sentence2_key is None else (examples[sentence1_key], examples[sentence2_key])
)
processed = tokenizer(*texts, padding="max_length", max_length=128, truncation=True)
processed["labels"] = examples["label"]
return processed<jupyter_output><empty_output><jupyter_text>To apply this function to all the sentences (or pairs of sentences) in our dataset, we just use the `map` method of our dataset object we created earlier. This will apply the function on all the elements of all the splits in the dataset, so our training, validation, and testing data will be preprocessed in one single command.<jupyter_code>tokenized_dataset = raw_dataset.map(preprocess_function, batched=True, remove_columns=raw_dataset["train"].column_names)<jupyter_output><empty_output><jupyter_text>As a final step, we split the dataset into the *train* and *validation* dataset and give each set more explicit names.<jupyter_code>train_dataset = tokenized_dataset["train"]
eval_dataset = tokenized_dataset["validation"]<jupyter_output><empty_output><jupyter_text>Fine-tuning the model Now that our data is ready, we can download the pretrained model and fine-tune it. Since all our tasks are about sentence classification, we use the `FlaxAutoModelForSequenceClassification` class. Like with the tokenizer, the `from_pretrained` method will download and cache the model for us. All weight parameters that are not found in the pretrained model weights will be randomly initialized upon instantiating the model class. Because the GLUE task contains relatively small training datasets, a different seed for weight initialization might very well lead to significantly different results. For reproducibility, we set the random seed to *0* in this notebook.The only thing we have to specify in the config is the number of labels for our problem (which is always 2, except for STS-B which is a regression problem, and MNLI where we have 3 labels):<jupyter_code>from transformers import FlaxAutoModelForSequenceClassification, AutoConfig
num_labels = 3 if task.startswith("mnli") else 1 if task=="stsb" else 2
seed = 0
config = AutoConfig.from_pretrained(model_checkpoint, num_labels=num_labels)
model = FlaxAutoModelForSequenceClassification.from_pretrained(model_checkpoint, config=config, seed=seed)<jupyter_output>Some weights of the model checkpoint at bert-base-cased were not used when initializing FlaxBertForSequenceClassification: {('cls', 'predictions', 'transform', 'dense', 'bias'), ('cls', 'predictions', 'transform', 'LayerNorm', 'bias'), ('cls', 'predictions', 'bias'), ('cls', 'predictions', 'transform', 'dense', 'kernel'), ('cls', 'predictions', 'transform', 'LayerNorm', 'scale')}
- This IS expected if you are initializing FlaxBertForSequenceClassification from the checkpoint of a model trained on another task or with another architecture (e.g. initializing a BertForSequenceClassification model from a BertForPreTraining model).
- This IS NOT expected if you are initializing FlaxBertForSequenceClassification from the checkpoint of a model that you expect to be exactly identical (initializing a BertForSequenceClassification model from a BertForSequenceClassification model).
Some weights of FlaxBertForSequenceClassification were not initialized from the model checkpoint at bert-base-cased [...]<jupyter_text>The warning is telling us we are throwing away some weights (the `vocab_transform` and `vocab_layer_norm` layers) and randomly initializing some others (the `pre_classifier` and `classifier` layers). This is normal in this case because we are removing the head used to pretrain the model on a masked language modeling objective and replacing it with a new head for which we don't have pretrained weights, so the library warns us we should fine-tune this model before using it for inference, which is exactly what we are going to do. To write a full training and evaluation loop in Flax, we will need to import a couple of packages.<jupyter_code>import flax
import jax
import optax
from itertools import chain
from tqdm.notebook import tqdm
from typing import Callable
import jax.numpy as jnp
from flax.training.common_utils import get_metrics, onehot, shard, shard_prng_key
from flax.training import train_state<jupyter_output><empty_output><jupyter_text>For all GLUE tasks except `"wnli"` and `"mrpc"`, it is usually sufficient to train for just 3 epochs. `"wnli"` and `"mrpc"` are so small that we recommend training on 5 epochs. We use a learning rate of *0.00002*.<jupyter_code>num_train_epochs = 3 if task not in ["mrpc", "wnli"] else 5
learning_rate = 2e-5<jupyter_output><empty_output><jupyter_text>We've already set the batch size per device, but are now interested in the effective total batch_size:<jupyter_code>total_batch_size = per_device_batch_size * jax.local_device_count()
print("The overall batch size (both for training and eval) is", total_batch_size)<jupyter_output>The overall batch size (both for training and eval) is 32<jupyter_text>Next, we define the learning rate schedule. A simple and effective learning rate schedule is the linear decay with warmup (click [here](https://huggingface.co/transformers/main_classes/optimizer_schedules.htmltransformers.get_linear_schedule_with_warmup) for more information). Since GLUE datasets are rather small and therefore have few training steps, we set the number of warmup steps simply to 0. The schedule is then fully defined by the number of training steps and the learning rate.It is recommended to use the [**optax**](https://github.com/deepmind/optax) library for training utilities, *e.g.* learning rate schedules and optimizers.<jupyter_code>num_train_steps = len(train_dataset) // total_batch_size * num_train_epochs
learning_rate_function = optax.linear_schedule(init_value=learning_rate, end_value=0, transition_steps=num_train_steps)<jupyter_output><empty_output><jupyter_text>Defining the training state Next, we will create the *training state* that includes the optimizer, the loss function, and is responsible for updating the model's parameters during training.Most JAX transformations (notably [jax.jit](https://jax.readthedocs.io/en/latest/jax-101/02-jitting.html)) require functions that are transformed to have no side-effects. This is because any such side-effects will only be executed once, when the Python version of the function is run during compilation (see [Stateful Computations in JAX](https://jax.readthedocs.io/en/latest/jax-101/07-state.html)). As a consequence, Flax models (which can be transformed by JAX transformations) are **immutable**, and the state of the model (i.e., its weight parameters) are stored *outside* of the model instance.Models are initialized and updated in a purely functional way: you pass the state to the model when calling it, and the model returns the new (possibly modified) state, leaving the model instance itself unchanged.Flax provides a convenience class [`flax.training.train_state.TrainState`](https://github.com/google/flax/blob/9da95cdd12591f42d2cd4c17089861bff7e43cc5/flax/training/train_state.pyL22), which stores things such as the model parameters, the loss function, the optimizer, and exposes an `apply_gradients` function to update the model's weight parameters.Alright, let's begin by defining our *training state* class. We create a derived `TrainState` class that additionally stores the model's forward pass as `eval_function` as well as a `loss_function`.<jupyter_code>class TrainState(train_state.TrainState):
logits_function: Callable = flax.struct.field(pytree_node=False)
loss_function: Callable = flax.struct.field(pytree_node=False)<jupyter_output><empty_output><jupyter_text>We will be using the standard Adam optimizer with weight decay. For more information on AdamW (Adam + weight decay), one can take a look at [this](https://www.fast.ai/2018/07/02/adam-weight-decay/) blog post.AdamW can easily be imported from [optax](https://github.com/deepmind/optax): Regularizing the *bias* and/or *LayerNorm* has not shown to improve performance and can even be disadvantageous, which is why we disable it here. For more information on this, please check out the following [blog post](https://medium.com/@shrutijadon10104776/why-we-dont-use-bias-in-regularization-5a86905dfcd6) or [paper](https://arxiv.org/abs/1711.05101).Hence we create a `decay_mask_fn` which makes sure that weight decay is not applied to any *bias* or *LayerNorm* weights. This can easily be done by passing a `mask_fn` to `optax.adamw`.<jupyter_code>from flax import traverse_util
def decay_mask_fn(params):
flat_params = traverse_util.flatten_dict(params)
flat_mask = {path: (path[-1] != "bias" and path[-2:] != ("LayerNorm", "scale")) for path in flat_params}
return traverse_util.unflatten_dict(flat_mask)
import optax
def adamw(weight_decay):
return optax.adamw(learning_rate=learning_rate_function, b1=0.9, b2=0.999, eps=1e-6, weight_decay=weight_decay, mask=decay_mask_fn)<jupyter_output><empty_output><jupyter_text>Now we also need to define the evaluation and loss function given the model's output logits. For regression tasks, the evaluation function simply takes the first logit element and the mean-square error (mse) loss is used. For classification tasks, the evaluation function uses the `argmax` of the logits, and the cross-entropy loss with `num_labels` is used.<jupyter_code>def loss_function(logits, labels):
if is_regression:
return jnp.mean((logits[..., 0] - labels) ** 2)
xentropy = optax.softmax_cross_entropy(logits, onehot(labels, num_classes=num_labels))
return jnp.mean(xentropy)
def eval_function(logits):
return logits[..., 0] if is_regression else logits.argmax(-1)<jupyter_output><empty_output><jupyter_text>Finally, we put the pieces together to instantiate a `TrainState`.<jupyter_code>state = TrainState.create(
apply_fn=model.__call__,
params=model.params,
tx=adamw(weight_decay=0.01),
logits_function=eval_function,
loss_function=loss_function,
)<jupyter_output><empty_output><jupyter_text>Defining the training and evaluation stepDuring fine-tuning, we want to update the model parameters and evaluate the performance after each epoch. Let's write the functions `train_step` and `eval_step` accordingly. During training the weight parameters should be updated as follows:1. Define a loss function `loss_function` that first runs a forward pass of the model given data input. Remember that Flax models are immutable, and we explicitly pass it the state (in this case the model parameters and the RNG). `loss_function` returns a scalar loss (using the previously defined `state.loss_function`) between the model output and input targets.2. Differentiate this loss function using [`jax.value_and_grad`](https://jax.readthedocs.io/en/latest/notebooks/autodiff_cookbook.htmlevaluate-a-function-and-its-gradient-using-value-and-grad). This is a JAX transformation called [automatic differentiation](https://en.wikipedia.org/wiki/Automatic_differentiation), which computes the gradient of `loss_function` given the input to the function (i.e., the parameters of the model), and returns the value and the gradient in a pair `(loss, gradients)`.3. Compute the mean gradient over all devices using the collective operation [lax.pmean](https://jax.readthedocs.io/en/latest/_autosummary/jax.lax.pmean.html). As we will see below, each device runs `train_step` on a different batch of data, but by taking the mean here we ensure the model parameters are the same on all devices.4. Use `state.apply_gradients`, which applies the gradients to the weights.Below, you can see how each of the described steps above is put into practice.<jupyter_code>def train_step(state, batch, dropout_rng):
targets = batch.pop("labels")
dropout_rng, new_dropout_rng = jax.random.split(dropout_rng)
def loss_function(params):
logits = state.apply_fn(**batch, params=params, dropout_rng=dropout_rng, train=True)[0]
loss = state.loss_function(logits, targets)
return loss
grad_function = jax.value_and_grad(loss_function)
loss, grad = grad_function(state.params)
grad = jax.lax.pmean(grad, "batch")
new_state = state.apply_gradients(grads=grad)
metrics = jax.lax.pmean({"loss": loss, "learning_rate": learning_rate_function(state.step)}, axis_name="batch")
return new_state, metrics, new_dropout_rng<jupyter_output><empty_output><jupyter_text>Now, we want to do parallelized training over all TPU devices. To do so, we use [`jax.pmap`](https://jax.readthedocs.io/en/latest/jax.html?highlight=pmapparallelization-pmap). This will compile the function once and run the same program on each device (it is an [SPMD program](https://en.wikipedia.org/wiki/SPMD)). When calling this pmapped function, all inputs (`"state"`, `"batch"`, `"dropout_rng"`) should be replicated for all devices, which means that the first axis of each argument is used to map over all TPU devices.The argument `donate_argnums` is used to tell JAX that the first argument `"state"` is "donated" to the computation, because it is not needed anymore afterwards. XLA can make use of donated buffers to reduce the memory needed.<jupyter_code>parallel_train_step = jax.pmap(train_step, axis_name="batch", donate_argnums=(0,))<jupyter_output><empty_output><jupyter_text>Similarly, we can now define the evaluation step. Here, the function is much easier as it simply needs to stack the model's forward pass with the previously defined `eval_function` (or `logits_function`).<jupyter_code>def eval_step(state, batch):
logits = state.apply_fn(**batch, params=state.params, train=False)[0]
return state.logits_function(logits)<jupyter_output><empty_output><jupyter_text>We then also apply `jax.pmap` to the evaluation step.<jupyter_code>parallel_eval_step = jax.pmap(eval_step, axis_name="batch")<jupyter_output><empty_output><jupyter_text>Defining the data collatorsIn a final step before we can start training, we need to define the data collators. The data collator is important to shuffle the training data before each epoch and to prepare the batch for each training and evaluation step.Let's start with the training collator. The training collator can be defined as a [Python generator](https://wiki.python.org/moin/Generators) that returns a batch model input every time it is called.First, a random permutation of the whole dataset is defined. Then, every time the training data collator is called the next batch of the randomized dataset is extracted, converted to a JAX array and sharded over all local TPU devices.<jupyter_code>def glue_train_data_loader(rng, dataset, batch_size):
steps_per_epoch = len(dataset) // batch_size
perms = jax.random.permutation(rng, len(dataset))
perms = perms[: steps_per_epoch * batch_size] # Skip incomplete batch.
perms = perms.reshape((steps_per_epoch, batch_size))
for perm in perms:
batch = dataset[perm]
batch = {k: jnp.array(v) for k, v in batch.items()}
batch = shard(batch)
yield batch<jupyter_output><empty_output><jupyter_text>We define the eval data collator in a similar fashion. **Note**:For simplicity, we throw away the last incomplete batch since it can't be easily sharded over all devices. This means that the evaluation results might be slightly incorrect. It can be easily fixed by including [this](https://github.com/huggingface/transformers/blob/f063c56d942737d2c7aac93895cd8310afd9c7a4/examples/flax/text-classification/run_flax_glue.pyL491) part in the training loop after evaluation.<jupyter_code>def glue_eval_data_loader(dataset, batch_size):
for i in range(len(dataset) // batch_size):
batch = dataset[i * batch_size : (i + 1) * batch_size]
batch = {k: jnp.array(v) for k, v in batch.items()}
batch = shard(batch)
yield batch<jupyter_output><empty_output><jupyter_text>Next, we replicate/copy the weight parameters on each device, so that we can pass them to our pmapped functions.<jupyter_code>state = flax.jax_utils.replicate(state)<jupyter_output><empty_output><jupyter_text>TrainingFinally, we can write down the full training loop. Let's start by generating a seeded `PRNGKey` for the dropout layers and dataset shuffling.<jupyter_code>rng = jax.random.PRNGKey(seed)
dropout_rngs = jax.random.split(rng, jax.local_device_count())<jupyter_output><empty_output><jupyter_text>Now we define the full training loop. For each batch in each epoch, we run a training step. Here, we also need to make sure that the PRNGKey is sharded/split over each device. Having completed an epoch, we report the training metrics and can run the evaluation.<jupyter_code>for i, epoch in enumerate(tqdm(range(1, num_train_epochs + 1), desc=f"Epoch ...", position=0, leave=True)):
rng, input_rng = jax.random.split(rng)
# train
with tqdm(total=len(train_dataset) // total_batch_size, desc="Training...", leave=False) as progress_bar_train:
for batch in glue_train_data_loader(input_rng, train_dataset, total_batch_size):
state, train_metrics, dropout_rngs = parallel_train_step(state, batch, dropout_rngs)
progress_bar_train.update(1)
# evaluate
with tqdm(total=len(eval_dataset) // total_batch_size, desc="Evaluating...", leave=False) as progress_bar_eval:
for batch in glue_eval_data_loader(eval_dataset, total_batch_size):
labels = batch.pop("labels")
predictions = parallel_eval_step(state, batch)
metric.add_batch(predictions=chain(*predictions), references=chain(*labels))
progress_bar_eval.update(1)
eval_metric = metric.compute()
loss = round(flax.jax_utils.unreplicate(train_metrics)['loss'].item(), 3)
eval_score = round(list(eval_metric.values())[0], 3)
metric_name = list(eval_metric.keys())[0]
print(f"{i+1}/{num_train_epochs} | Train loss: {loss} | Eval {metric_name}: {eval_score}")<jupyter_output><empty_output><jupyter_text>To see how your model fared you can compare it to the [GLUE Benchmark leaderboard](https://gluebenchmark.com/leaderboard). Sharing fine-tuned modelNow that you've succesfully trained a model, you can share it with the community by uploading the fine-tuned model checkpoint and tokenizer to your account on the [hub](https://huggingface.co/models).If you don't have an account yet, you can click [here](https://huggingface.co/join) join the community 🤗. In a first step, we install [git-lfs](https://git-lfs.github.com/) to easily upload the model weights.<jupyter_code>%%capture
!sudo apt-get install software-properties-common
!sudo curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
!sudo apt-get install git-lfs
!git lfs install<jupyter_output><empty_output><jupyter_text>Next, we you will need to store your git credentials so that `git` knows who is uploading the files. You should replace the fields `` and `` with your credentials accordingly.<jupyter_code>!git config --global user.email "<your-email-address>" # e.g. "patrick.v.platen@gmail.com"
!git config --global user.name "<your-name>" # e.g. "Patrick von Platen"<jupyter_output><empty_output><jupyter_text>You will need to pass your user authentification token `hf_auth_token` to allow the 🤗 hub to upload model weights under your username. To find your authentification token, you need to log in [here](https://huggingface.co/login), click on your icon (top right), go to *Settings*, then *API Tokens*. You can copy the *User API token* and replace it with the field `` below.<jupyter_code>hf_auth_token = "<your-auth-token>" # e.g. api_DaYgaaVnGdRtznIgiNfotCHFUqmOdARmPx<jupyter_output><empty_output><jupyter_text>Finally, you can give your fine-tuned model a nice `model_id` or leave the default one as noted below. The model will be uploaded under `https://huggingface.co//`, *e.g.*<jupyter_code>model_id = f"{model_checkpoint}_fine_tuned_glue_{task}"<jupyter_output><empty_output><jupyter_text>Great! Now all that is left to do is to upload your model:<jupyter_code>model.push_to_hub(model_id, use_auth_token=hf_auth_token)
tokenizer.push_to_hub(model_id, use_auth_token=hf_auth_token)<jupyter_output><empty_output><jupyter_text>You can now go to your model page to check it out 😊.We strongly recommend to add a model card so that the community can actually make use of your fine-tuned model. You can do so by clicking on *Create Model Card* and adding a descriptive text in markdown format. A simple description for your fine-tuned model is given by running the following cell. You can simply copy-paste the output to be used as your model card `README.md`.<jupyter_code>print(f"""---
language: en
license: apache-2.0
datasets:
- glue
---
# {" ".join([x.capitalize() for x in model_id.split("_")])}
This checkpoint was initialized from the pre-trained checkpoint {model_checkpoint} and subsequently fine-tuned on GLUE task: {task} using [this](https://colab.research.google.com/drive/162pW3wonGcMMrGxmA-jdxwy1rhqXd90x?usp=sharing) notebook.
Training was conducted for {num_train_epochs} epochs, using a linear decaying learning rate of {learning_rate}, and a total batch size of {total_batch_size}.
The model has a final training loss of {loss} and a {metric_name} of {eval_score}.
""")<jupyter_output><empty_output> | notebooks/examples/text_classification_flax.ipynb/0 | {
"file_path": "notebooks/examples/text_classification_flax.ipynb",
"repo_id": "notebooks",
"token_count": 9221
} | 163 |
<jupyter_start><jupyter_text>Speed Comparison `Safetensors` is really fast. Let's compare it against `PyTorch` by loading [gpt2](https://huggingface.co/gpt2) weights. To run the [GPU benchmark](gpu-benchmark), make sure your machine has GPU or you have selected `GPU runtime` if you are using Google Colab.Before you begin, make sure you have all the necessary libraries installed:<jupyter_code>!pip install safetensors huggingface_hub torch<jupyter_output><empty_output><jupyter_text>Let's start by importing all the packages that will be used:<jupyter_code>import os
import datetime
from huggingface_hub import hf_hub_download
from safetensors.torch import load_file
import torch<jupyter_output><empty_output><jupyter_text>Download safetensors & torch weights for gpt2:<jupyter_code>sf_filename = hf_hub_download("gpt2", filename="model.safetensors")
pt_filename = hf_hub_download("gpt2", filename="pytorch_model.bin")<jupyter_output><empty_output><jupyter_text>CPU benchmark<jupyter_code>start_st = datetime.datetime.now()
weights = load_file(sf_filename, device="cpu")
load_time_st = datetime.datetime.now() - start_st
print(f"Loaded safetensors {load_time_st}")
start_pt = datetime.datetime.now()
weights = torch.load(pt_filename, map_location="cpu")
load_time_pt = datetime.datetime.now() - start_pt
print(f"Loaded pytorch {load_time_pt}")
print(f"on CPU, safetensors is faster than pytorch by: {load_time_pt/load_time_st:.1f} X")<jupyter_output><empty_output><jupyter_text>This speedup is due to the fact that this library avoids unnecessary copies by mapping the file directly. It is actually possible to do on [pure pytorch](https://gist.github.com/Narsil/3edeec2669a5e94e4707aa0f901d2282).The currently shown speedup was gotten on:* OS: Ubuntu 18.04.6 LTS* CPU: Intel(R) Xeon(R) CPU @ 2.00GHz GPU benchmark<jupyter_code># This is required because this feature hasn't been fully verified yet, but
# it's been tested on many different environments
os.environ["SAFETENSORS_FAST_GPU"] = "1"
# CUDA startup out of the measurement
torch.zeros((2, 2)).cuda()
start_st = datetime.datetime.now()
weights = load_file(sf_filename, device="cuda:0")
load_time_st = datetime.datetime.now() - start_st
print(f"Loaded safetensors {load_time_st}")
start_pt = datetime.datetime.now()
weights = torch.load(pt_filename, map_location="cuda:0")
load_time_pt = datetime.datetime.now() - start_pt
print(f"Loaded pytorch {load_time_pt}")
print(f"on GPU, safetensors is faster than pytorch by: {load_time_pt/load_time_st:.1f} X")<jupyter_output><empty_output> | notebooks/safetensors_doc/en/speed.ipynb/0 | {
"file_path": "notebooks/safetensors_doc/en/speed.ipynb",
"repo_id": "notebooks",
"token_count": 893
} | 164 |
<jupyter_start><jupyter_text>Huggingface Sagemaker - Vision Transformer Image Classification with the `google/vit` on `cifar10` 1. [Introduction](Introduction) 2. [Development Environment and Permissions](Development-Environment-and-Permissions) 1. [Installation](Installation) 3. [Permissions](Permissions)3. [Processing](Preprocessing) 1. [convert features and transform images](convert-features-and-transform-images) 2. [Uploading data to sagemaker_session_bucket](Uploading-data-to-sagemaker_session_bucket) 4. [Fine-tuning & starting Sagemaker Training Job](Fine-tuning-\&-starting-Sagemaker-Training-Job) 1. [Creating an Estimator and start a training job](Creating-an-Estimator-and-start-a-training-job) IntroductionWelcome to our end-to-end binary Image-Classification example. In this demo, we will use the Hugging Faces `transformers` and `datasets` library together with Amazon SageMaker to fine-tune a pre-trained vision transformers on image classification. The script and notebook is inspired by [NielsRogges](https://github.com/NielsRogge) example notebook of [Fine-tune the Vision Transformer on CIFAR-10](https://github.com/NielsRogge/Transformers-Tutorials/blob/master/VisionTransformer/Fine_tuning_the_Vision_Transformer_on_CIFAR_10_with_the_%F0%9F%A4%97_Trainer.ipynb). Niels was also the contributor of the Vision Transformer into `transformers`._**NOTE: You can run this demo in Sagemaker Studio, your local machine or Sagemaker Notebook Instances**_ Development Environment and Permissions _**Use at least a `t3.large` instance otherwise preprocessing will take ages.**_ Installation_*Note:* we only install the required libraries from Hugging Face and AWS. You also need PyTorch or Tensorflow, if not already installed_<jupyter_code>!pip install "sagemaker>=2.140.0" "transformers==4.26.1" "datasets[s3]==2.10.1" --upgrade<jupyter_output><empty_output><jupyter_text>Permissions _If you are going to use Sagemaker in a local environment, you need access to an IAM Role with the required permissions for Sagemaker. You can find out more about this [here](https://docs.aws.amazon.com/sagemaker/latest/dg/sagemaker-roles.html)_<jupyter_code>import sagemaker
import boto3
sess = sagemaker.Session()
# sagemaker session bucket -> used for uploading data, models and logs
# sagemaker will automatically create this bucket if it not exists
sagemaker_session_bucket=None
if sagemaker_session_bucket is None and sess is not None:
# set to default bucket if a bucket name is not given
sagemaker_session_bucket = sess.default_bucket()
try:
role = sagemaker.get_execution_role()
except ValueError:
iam = boto3.client('iam')
role = iam.get_role(RoleName='sagemaker_execution_role')['Role']['Arn']
sess = sagemaker.Session(default_bucket=sagemaker_session_bucket)
print(f"sagemaker role arn: {role}")
print(f"sagemaker bucket: {sess.default_bucket()}")
print(f"sagemaker session region: {sess.boto_region_name}")<jupyter_output><empty_output><jupyter_text>PreprocessingWe are using the `datasets` library to download and preprocess the `fashion-mnist` dataset. After preprocessing, the dataset will be uploaded to our `sagemaker_session_bucket` to be used within our training job. The [cifar10](https://www.cs.toronto.edu/~kriz/cifar.html) are labeled subsets of the 80 million tiny images dataset. They were collected by Alex Krizhevsky, Vinod Nair, and Geoffrey Hinton. _Note from Nils: "that in the ViT paper, the best results were obtained when fine-tuning at a higher resolution. For this, one interpolates the pre-trained absolute position embeddings"._ Convert Features and transform images<jupyter_code>from transformers import AutoProcessor
from datasets import load_dataset
import numpy as np
from PIL import Image
from random import randint
# dataset used
dataset_name = 'cifar10'
# s3 key prefix for the data
s3_prefix = 'samples/datasets/cifar10'
# FeatureExtractor used in preprocessing
model_name = 'google/vit-base-patch16-224-in21k'
image_processor = AutoProcessor.from_pretrained(model_name)<jupyter_output><empty_output><jupyter_text>We are downsampling dataset to make it faster to preprocess.<jupyter_code># load dataset
train_dataset, test_dataset = load_dataset(dataset_name,
split=['train[:5000]', 'test[:2000]'])
# display random sample
train_dataset[0]["img"]
from datasets import Features, Array3D
# we need to extend the features
features = Features({
**train_dataset.features,
'pixel_values': Array3D(dtype="float32", shape=(3, 224, 224)),
})
# extractor helper function
def preprocess_images(examples):
# get batch of images
images = examples['img']
inputs = image_processor(images=images)
examples['pixel_values'] = inputs['pixel_values']
return examples
# preprocess dataset
train_dataset = train_dataset.map(preprocess_images, batched=True,features=features)
test_dataset = test_dataset.map(preprocess_images, batched=True,features=features)
# set to torch format for training
train_dataset.set_format('torch', columns=['pixel_values', 'label'])
test_dataset.set_format('torch', columns=['pixel_values', 'label'])
# remove unused column
train_dataet = train_dataset.remove_columns("img")<jupyter_output><empty_output><jupyter_text>Uploading data to `sagemaker_session_bucket`After we processed the `datasets` we are going to use the new `FileSystem` [integration](https://huggingface.co/docs/datasets/filesystems.html) to upload our dataset to S3.<jupyter_code>import botocore
from datasets.filesystems import S3FileSystem
# save train_dataset to s3
training_input_path = f's3://{sess.default_bucket()}/{s3_prefix}/train'
train_dataset.save_to_disk(training_input_path, num_shards=1)
# save test_dataset to s3
test_input_path = f's3://{sess.default_bucket()}/{s3_prefix}/test'
test_dataset.save_to_disk(test_input_path, num_shards=1)
print(f"train dataset is uploaded to {training_input_path}")
print(f"test dataset is uploaded to {test_input_path}")<jupyter_output><empty_output><jupyter_text>num_train_epochs Fine-tuning & starting Sagemaker Training JobIn order to create a sagemaker training job we need a `HuggingFace` Estimator. The Estimator handles end-to-end Amazon SageMaker training and deployment tasks. In an Estimator, we define which fine-tuning script should be used as `entry_point`, which `instance_type` should be used, which `hyperparameters` are passed in .....```python/opt/conda/bin/python train.py --num_train_epochs 1 --model_name google/vit-base-patch16-224-in21k --per_device_train_batch_size 16``` Creating an Estimator and start a training jobWe are defining the hyperparameter `use_auth_token` with our token from huggingface.co/settings to automatically upload our model to the Hugging Face Model Hub afterwards. The `train.py` makes us of the `.push_to_hub()` of the Trainer API to automatically upload model to hf.co/models.<jupyter_code>from sagemaker.huggingface import HuggingFace
# hyperparameters, which are passed into the training job
hyperparameters={'num_train_epochs': 3, # train epochs
'per_device_train_batch_size': 16, # batch size
'model_name': model_name, # model which will be trained on
'use_auth_token': '' # add you API Token to upload the model
}
huggingface_estimator = HuggingFace(entry_point='train.py',
source_dir='./scripts',
instance_type='ml.p3.2xlarge',
instance_count=1,
role=role,
transformers_version='4.26',
pytorch_version='1.13',
py_version='py39',
hyperparameters = hyperparameters)
# starting the train job with our uploaded datasets as input
huggingface_estimator.fit({'train': training_input_path, 'test': test_input_path})<jupyter_output><empty_output><jupyter_text>Upload to hubSince we have done the preprocessing in advance we need to upload the `image_processor` separately. You can this by creating a `preprocessor_config.json` file in the UI on huggingface.co or using the `huggingface_hub` python library. The file needs to contain the configuration of the `image_processor`<jupyter_code>print(image_processor.to_json_string())<jupyter_output><empty_output> | notebooks/sagemaker/09_image_classification_vision_transformer/sagemaker-notebook.ipynb/0 | {
"file_path": "notebooks/sagemaker/09_image_classification_vision_transformer/sagemaker-notebook.ipynb",
"repo_id": "notebooks",
"token_count": 2887
} | 165 |
# 🤗 Transformers doc notebooks
These notebooks are automatically generated from the [🤗 Transformers documentation](https://huggingface.co/transformers/)
so you should not make any direct modification here. If there is a typo to fix or a sentence to add, open a pull
request in the [🤗 Transformers repo](https://github.com/huggingface/transformers) and fix the corresponding file in
the `docs/source/` folder.
If there is something that seems weirdly converted from the original doc file, open an issue in this repo and we will
try to fix the conversion script.
**Note:** If you are looking for a particular notebook and can't find it, it may have moved inside the `en` subfolder. | notebooks/transformers_doc/README.md/0 | {
"file_path": "notebooks/transformers_doc/README.md",
"repo_id": "notebooks",
"token_count": 169
} | 166 |
<!--⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Soft prompts
Training large pretrained language models is very time-consuming and compute-intensive. As they continue to grow in size, there is increasing interest in more efficient training methods such as *prompting*. Prompting primes a frozen pretrained model for a specific downstream task by including a text prompt that describes the task or even demonstrates an example of the task. With prompting, you can avoid fully training a separate model for each downstream task, and use the same frozen pretrained model instead. This is a lot easier because you can use the same model for several different tasks, and it is significantly more efficient to train and store a smaller set of prompt parameters than to train all the model's parameters.
There are two categories of prompting methods:
- hard prompts are manually handcrafted text prompts with discrete input tokens; the downside is that it requires a lot of effort to create a good prompt
- soft prompts are learnable tensors concatenated with the input embeddings that can be optimized to a dataset; the downside is that they aren't human readable because you aren't matching these "virtual tokens" to the embeddings of a real word
This conceptual guide provides a brief overview of the soft prompt methods included in 🤗 PEFT: prompt tuning, prefix tuning, P-tuning, and multitask prompt tuning.
## Prompt tuning
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/prompt-tuning.png"/>
</div>
<small>Only train and store a significantly smaller set of task-specific prompt parameters <a href="https://hf.co/papers/2104.08691">(image source)</a>.</small>
[Prompt tuning](https://hf.co/papers/2104.08691) was developed for text classification tasks on T5 models, and all downstream tasks are cast as a text generation task. For example, sequence classification usually assigns a single class label to a sequence of text. By casting it as a text generation task, the tokens that make up the class label are *generated*. Prompts are added to the input as a series of tokens. Typically, the model parameters are fixed which means the prompt tokens are also fixed by the model parameters.
The key idea behind prompt tuning is that prompt tokens have their own parameters that are updated independently. This means you can keep the pretrained model's parameters frozen, and only update the gradients of the prompt token embeddings. The results are comparable to the traditional method of training the entire model, and prompt tuning performance scales as model size increases.
Take a look at [Prompt tuning for causal language modeling](../task_guides/clm-prompt-tuning) for a step-by-step guide on how to train a model with prompt tuning.
## Prefix tuning
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/prefix-tuning.png"/>
</div>
<small>Optimize the prefix parameters for each task <a href="https://hf.co/papers/2101.00190">(image source)</a>.</small>
[Prefix tuning](https://hf.co/papers/2101.00190) was designed for natural language generation (NLG) tasks on GPT models. It is very similar to prompt tuning; prefix tuning also prepends a sequence of task-specific vectors to the input that can be trained and updated while keeping the rest of the pretrained model's parameters frozen.
The main difference is that the prefix parameters are inserted in **all** of the model layers, whereas prompt tuning only adds the prompt parameters to the model input embeddings. The prefix parameters are also optimized by a separate feed-forward network (FFN) instead of training directly on the soft prompts because it causes instability and hurts performance. The FFN is discarded after updating the soft prompts.
As a result, the authors found that prefix tuning demonstrates comparable performance to fully finetuning a model, despite having 1000x fewer parameters, and it performs even better in low-data settings.
Take a look at [Prefix tuning for conditional generation](../task_guides/seq2seq-prefix-tuning) for a step-by-step guide on how to train a model with prefix tuning.
## P-tuning
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/p-tuning.png"/>
</div>
<small>Prompt tokens can be inserted anywhere in the input sequence, and they are optimized by a prompt encoder <a href="https://hf.co/papers/2103.10385">(image source)</a>.</small>
[P-tuning](https://hf.co/papers/2103.10385) is designed for natural language understanding (NLU) tasks and all language models.
It is another variation of a soft prompt method; P-tuning also adds a trainable embedding tensor that can be optimized to find better prompts, and it uses a prompt encoder (a bidirectional long-short term memory network or LSTM) to optimize the prompt parameters. Unlike prefix tuning though:
- the prompt tokens can be inserted anywhere in the input sequence, and it isn't restricted to only the beginning
- the prompt tokens are only added to the input instead of adding them to every layer of the model
- introducing *anchor* tokens can improve performance because they indicate characteristics of a component in the input sequence
The results suggest that P-tuning is more efficient than manually crafting prompts, and it enables GPT-like models to compete with BERT-like models on NLU tasks.
Take a look at [P-tuning for sequence classification](../task_guides/ptuning-seq-classification) for a step-by-step guide on how to train a model with P-tuning.
## Multitask prompt tuning
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/mpt.png"/>
</div>
<small><a href="https://hf.co/papers/2103.10385">Multitask prompt tuning enables parameter-efficient transfer learning</a>.</small>
[Multitask prompt tuning (MPT)](https://hf.co/papers/2103.10385) learns a single prompt from data for multiple task types that can be shared for different target tasks. Other existing approaches learn a separate soft prompt for each task that need to be retrieved or aggregated for adaptation to target tasks. MPT consists of two stages:
1. source training - for each task, its soft prompt is decomposed into task-specific vectors. The task-specific vectors are multiplied together to form another matrix W, and the Hadamard product is used between W and a shared prompt matrix P to generate a task-specific prompt matrix. The task-specific prompts are distilled into a single prompt matrix that is shared across all tasks. This prompt is trained with multitask training.
2. target adaptation - to adapt the single prompt for a target task, a target prompt is initialized and expressed as the Hadamard product of the shared prompt matrix and the task-specific low-rank prompt matrix.
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/mpt-decomposition.png"/>
</div>
<small><a href="https://hf.co/papers/2103.10385">Prompt decomposition</a>.</small>
| peft/docs/source/conceptual_guides/prompting.md/0 | {
"file_path": "peft/docs/source/conceptual_guides/prompting.md",
"repo_id": "peft",
"token_count": 1830
} | 167 |
<!--Copyright 2024 The HuggingFace Team. All rights reserved.
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# Prompt-based methods
A prompt can describe a task or provide an example of a task you want the model to learn. Instead of manually creating these prompts, soft prompting methods add learnable parameters to the input embeddings that can be optimized for a specific task while keeping the pretrained model's parameters frozen. This makes it both faster and easier to finetune large language models (LLMs) for new downstream tasks.
The PEFT library supports several types of prompting methods (p-tuning, prefix tuning, prompt tuning) and you can learn more about how these methods work conceptually in the [Soft prompts](../conceptual_guides/prompting) guide. If you're interested in applying these methods to other tasks and use cases, take a look at our [notebook collection](https://huggingface.co/spaces/PEFT/soft-prompting)!
This guide will show you how to train a causal language model - with a soft prompting method - to *generate a classification* for whether a tweet is a complaint or not.
<Tip>
Some familiarity with the general process of training a causal language model would be really helpful and allow you to focus on the soft prompting methods. If you're new, we recommend taking a look at the [Causal language modeling](https://huggingface.co/docs/transformers/tasks/language_modeling) guide first from the Transformers documentation. When you're ready, come back and see how easy it is to drop PEFT in to your training!
</Tip>
Before you begin, make sure you have all the necessary libraries installed.
```bash
pip install -q peft transformers datasets
```
## Dataset
For this guide, you'll use the `twitter_complaints` subset of the [RAFT](https://huggingface.co/datasets/ought/raft) dataset. The `twitter_complaints` subset contains tweets labeled as `complaint` and `no complaint` and you can check out the [dataset viewer](https://huggingface.co/datasets/ought/raft/viewer/twitter_complaints) for a better idea of what the data looks like.
Use the [`~datasets.load_dataset`] function to load the dataset and create a new `text_label` column so it is easier to understand what the `Label` values, `1` and `2` mean.
```py
from datasets import load_dataset
ds = load_dataset("ought/raft", "twitter_complaints")
classes = [k.replace("_", " ") for k in ds["train"].features["Label"].names]
ds = ds.map(
lambda x: {"text_label": [classes[label] for label in x["Label"]]},
batched=True,
num_proc=1,
)
ds["train"][0]
{"Tweet text": "@HMRCcustomers No this is my first job", "ID": 0, "Label": 2, "text_label": "no complaint"}
```
Load a tokenizer, define the padding token to use, and determine the maximum length of the tokenized label.
```py
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("bigscience/bloomz-560m")
if tokenizer.pad_token_id is None:
tokenizer.pad_token_id = tokenizer.eos_token_id
target_max_length = max([len(tokenizer(class_label)["input_ids"]) for class_label in classes])
print(target_max_length)
```
Create a preprocessing function that tokenizes the tweet text and labels, pad the inputs and labels in each batch, create an attention mask, and truncate sequences to the `max_length`. Then convert the `input_ids`, `attention_mask`, and `labels` to PyTorch tensors.
```py
import torch
max_length = 64
def preprocess_function(examples, text_column="Tweet text", label_column="text_label"):
batch_size = len(examples[text_column])
inputs = [f"{text_column} : {x} Label : " for x in examples[text_column]]
targets = [str(x) for x in examples[label_column]]
model_inputs = tokenizer(inputs)
labels = tokenizer(targets)
classes = [k.replace("_", " ") for k in ds["train"].features["Label"].names]
for i in range(batch_size):
sample_input_ids = model_inputs["input_ids"][i]
label_input_ids = labels["input_ids"][i]
model_inputs["input_ids"][i] = [tokenizer.pad_token_id] * (
max_length - len(sample_input_ids)
) + sample_input_ids
model_inputs["attention_mask"][i] = [0] * (max_length - len(sample_input_ids)) + model_inputs[
"attention_mask"
][i]
labels["input_ids"][i] = [-100] * (max_length - len(sample_input_ids)) + label_input_ids
model_inputs["input_ids"][i] = torch.tensor(model_inputs["input_ids"][i][:max_length])
model_inputs["attention_mask"][i] = torch.tensor(model_inputs["attention_mask"][i][:max_length])
labels["input_ids"][i] = torch.tensor(labels["input_ids"][i][:max_length])
model_inputs["labels"] = labels["input_ids"]
return model_inputs
```
Apply the preprocessing function to the entire dataset with the [`~datasets.Dataset.map`] function, and remove the unprocessed columns because the model won't need them.
```py
processed_ds = ds.map(
preprocess_function,
batched=True,
num_proc=1,
remove_columns=ds["train"].column_names,
load_from_cache_file=False,
desc="Running tokenizer on dataset",
)
```
Finally, create a training and evaluation [`DataLoader`](https://pytorch.org/docs/stable/data.html#torch.utils.data.DataLoader). You can set `pin_memory=True` to speed up the data transfer to the GPU during training if the samples in your dataset are on a CPU.
```py
from torch.utils.data import DataLoader
from transformers import default_data_collator
train_ds = processed_ds["train"]
eval_ds = processed_ds["test"]
batch_size = 16
train_dataloader = DataLoader(train_ds, shuffle=True, collate_fn=default_data_collator, batch_size=batch_size, pin_memory=True)
eval_dataloader = DataLoader(eval_ds, collate_fn=default_data_collator, batch_size=batch_size, pin_memory=True)
```
## Model
Now let's load a pretrained model to use as the base model for the soft prompt method. This guide uses the [bigscience/bloomz-560m](https://huggingface.co/bigscience/bloomz-560m) model, but you can use any causal language model you want.
```py
from transformers import AutoModelForCausalLM
model = AutoModelForCausalLM.from_pretrained("bigscience/bloomz-560m")
```
### PEFT configuration and model
For any PEFT method, you'll need to create a configuration which contains all the parameters that specify how the PEFT method should be applied. Once the configuration is setup, pass it to the [`~peft.get_peft_model`] function along with the base model to create a trainable [`PeftModel`].
<Tip>
Call the [`~PeftModel.print_trainable_parameters`] method to compare the number of trainable parameters of [`PeftModel`] versus the number of parameters in the base model!
</Tip>
<hfoptions id="configurations">
<hfoption id="p-tuning">
[P-tuning](../conceptual_guides/prompting#p-tuning) adds a trainable embedding tensor where the prompt tokens can be added anywhere in the input sequence. Create a [`PromptEncoderConfig`] with the task type, the number of virtual tokens to add and learn, and the hidden size of the encoder for learning the prompt parameters.
```py
from peft import PromptEncoderConfig, get_peft_model
peft_config = PromptEncoderConfig(task_type="CAUSAL_LM", num_virtual_tokens=20, encoder_hidden_size=128)
model = get_peft_model(model, peft_config)
model.print_trainable_parameters()
"trainable params: 300,288 || all params: 559,514,880 || trainable%: 0.05366935013417338"
```
</hfoption>
<hfoption id="prefix tuning">
[Prefix tuning](../conceptual_guides/prompting#prefix-tuning) adds task-specific parameters in all of the model layers, which are optimized by a separate feed-forward network. Create a [`PrefixTuningConfig`] with the task type and number of virtual tokens to add and learn.
```py
from peft import PrefixTuningConfig, get_peft_model
peft_config = PrefixTuningConfig(task_type="CAUSAL_LM", num_virtual_tokens=20)
model = get_peft_model(model, peft_config)
model.print_trainable_parameters()
"trainable params: 983,040 || all params: 560,197,632 || trainable%: 0.1754809274167014"
```
</hfoption>
<hfoption id="prompt tuning">
[Prompt tuning](../conceptual_guides/prompting#prompt-tuning) formulates all tasks as a *generation* task and it adds a task-specific prompt to the input which is updated independently. The `prompt_tuning_init_text` parameter specifies how to finetune the model (in this case, it is classifying whether tweets are complaints or not). For the best results, the `prompt_tuning_init_text` should have the same number of tokens that should be predicted. To do this, you can set `num_virtual_tokens` to the number of tokens of the `prompt_tuning_init_text`.
Create a [`PromptTuningConfig`] with the task type, the initial prompt tuning text to train the model with, the number of virtual tokens to add and learn, and a tokenizer.
```py
from peft import PromptTuningConfig, PromptTuningInit, get_peft_model
prompt_tuning_init_text = "Classify if the tweet is a complaint or no complaint.\n"
peft_config = PromptTuningConfig(
task_type="CAUSAL_LM",
prompt_tuning_init=PromptTuningInit.TEXT,
num_virtual_tokens=len(tokenizer(prompt_tuning_init_text)["input_ids"]),,
prompt_tuning_init_text=prompt_tuning_init_text,
tokenizer_name_or_path="bigscience/bloomz-560m",
)
model = get_peft_model(model, peft_config)
model.print_trainable_parameters()
"trainable params: 8,192 || all params: 559,222,784 || trainable%: 0.0014648902430985358"
```
</hfoption>
</hfoptions>
### Training
Set up an optimizer and learning rate scheduler.
```py
from transformers import get_linear_schedule_with_warmup
lr = 3e-2
num_epochs = 50
optimizer = torch.optim.AdamW(model.parameters(), lr=lr)
lr_scheduler = get_linear_schedule_with_warmup(
optimizer=optimizer,
num_warmup_steps=0,
num_training_steps=(len(train_dataloader) * num_epochs),
)
```
Move the model to the GPU and create a training loop that reports the loss and perplexity for each epoch.
```py
from tqdm import tqdm
device = "cuda"
model = model.to(device)
for epoch in range(num_epochs):
model.train()
total_loss = 0
for step, batch in enumerate(tqdm(train_dataloader)):
batch = {k: v.to(device) for k, v in batch.items()}
outputs = model(**batch)
loss = outputs.loss
total_loss += loss.detach().float()
loss.backward()
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
model.eval()
eval_loss = 0
eval_preds = []
for step, batch in enumerate(tqdm(eval_dataloader)):
batch = {k: v.to(device) for k, v in batch.items()}
with torch.no_grad():
outputs = model(**batch)
loss = outputs.loss
eval_loss += loss.detach().float()
eval_preds.extend(
tokenizer.batch_decode(torch.argmax(outputs.logits, -1).detach().cpu().numpy(), skip_special_tokens=True)
)
eval_epoch_loss = eval_loss / len(eval_dataloader)
eval_ppl = torch.exp(eval_epoch_loss)
train_epoch_loss = total_loss / len(train_dataloader)
train_ppl = torch.exp(train_epoch_loss)
print(f"{epoch=}: {train_ppl=} {train_epoch_loss=} {eval_ppl=} {eval_epoch_loss=}")
```
## Share your model
Once training is complete, you can upload your model to the Hub with the [`~transformers.PreTrainedModel.push_to_hub`] method. You'll need to login to your Hugging Face account first and enter your token when prompted.
```py
from huggingface_hub import notebook_login
account = <your-hf-account-name>
peft_model_id = f"{account}/bloomz-560-m-peft-method"
model.push_to_hub(peft_model_id)
```
If you check the model file size in the repository, you’ll see that it is a lot smaller than a full sized model!
<div class="flex flex-col justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/peft/PEFT-hub-screenshot.png"/>
<figcaption class="text-center">For example, the adapter weights for a opt-350m model stored on the Hub are only ~6MB compared to the full model size which can be ~700MB.</figcaption>
</div>
## Inference
Let's load the model for inference and test it out on a tweet!
```py
from peft import AutoPeftModelForCausalLM
model = AutoPeftModelForCausalLM.from_pretrained("peft_model_id").to("cuda")
tokenizer = AutoTokenizer.from_pretrained("bigscience/bloomz-560m")
i = 15
inputs = tokenizer(f'{text_column} : {ds["test"][i]["Tweet text"]} Label : ', return_tensors="pt")
print(ds["test"][i]["Tweet text"])
"@NYTsupport i have complained a dozen times & yet my papers are still thrown FAR from my door. Why is this so hard to resolve?"
```
Call the [`~transformers.GenerationMixin.generate`] method to generate the predicted classification label.
```py
with torch.no_grad():
inputs = {k: v.to(device) for k, v in inputs.items()}
outputs = model.generate(input_ids=inputs["input_ids"], max_new_tokens=10)
print(tokenizer.batch_decode(outputs.detach().cpu().numpy(), skip_special_tokens=True))
"['Tweet text : @NYTsupport i have complained a dozen times & yet my papers are still thrown FAR from my door. Why is this so hard to resolve? Label : complaint']"
```
| peft/docs/source/task_guides/prompt_based_methods.md/0 | {
"file_path": "peft/docs/source/task_guides/prompt_based_methods.md",
"repo_id": "peft",
"token_count": 4608
} | 168 |
<jupyter_start><jupyter_code>from transformers import AutoModelForSeq2SeqLM
import peft
from peft import get_peft_config, get_peft_model, get_peft_model_state_dict, IA3Config, TaskType
import torch
from datasets import load_dataset
import os
os.environ["TOKENIZERS_PARALLELISM"] = "false"
from transformers import AutoTokenizer
from torch.utils.data import DataLoader
from transformers import default_data_collator, get_linear_schedule_with_warmup
from tqdm import tqdm
from datasets import load_dataset
device = "cuda"
model_name_or_path = "bigscience/mt0-large"
tokenizer_name_or_path = "bigscience/mt0-large"
checkpoint_name = "financial_sentiment_analysis_ia3_v1.pt"
text_column = "sentence"
label_column = "text_label"
max_length = 128
lr = 8e-3
num_epochs = 3
batch_size = 8
import importlib
importlib.reload(peft)
# creating model
peft_config = IA3Config(task_type=TaskType.SEQ_2_SEQ_LM, inference_mode=False, feedforward_modules=[])
model = AutoModelForSeq2SeqLM.from_pretrained(model_name_or_path)
model
model = get_peft_model(model, peft_config)
model.print_trainable_parameters()
model
# loading dataset
dataset = load_dataset("financial_phrasebank", "sentences_allagree")
dataset = dataset["train"].train_test_split(test_size=0.1)
dataset["validation"] = dataset["test"]
del dataset["test"]
classes = dataset["train"].features["label"].names
dataset = dataset.map(
lambda x: {"text_label": [classes[label] for label in x["label"]]},
batched=True,
num_proc=1,
)
dataset["train"][0]
# data preprocessing
tokenizer = AutoTokenizer.from_pretrained(model_name_or_path)
def preprocess_function(examples):
inputs = examples[text_column]
targets = examples[label_column]
model_inputs = tokenizer(inputs, max_length=max_length, padding="max_length", truncation=True, return_tensors="pt")
labels = tokenizer(targets, max_length=3, padding="max_length", truncation=True, return_tensors="pt")
labels = labels["input_ids"]
labels[labels == tokenizer.pad_token_id] = -100
model_inputs["labels"] = labels
return model_inputs
processed_datasets = dataset.map(
preprocess_function,
batched=True,
num_proc=1,
remove_columns=dataset["train"].column_names,
load_from_cache_file=False,
desc="Running tokenizer on dataset",
)
train_dataset = processed_datasets["train"]
eval_dataset = processed_datasets["validation"]
train_dataloader = DataLoader(
train_dataset, shuffle=True, collate_fn=default_data_collator, batch_size=batch_size, pin_memory=True
)
eval_dataloader = DataLoader(eval_dataset, collate_fn=default_data_collator, batch_size=batch_size, pin_memory=True)
# optimizer and lr scheduler
optimizer = torch.optim.AdamW(model.parameters(), lr=lr)
lr_scheduler = get_linear_schedule_with_warmup(
optimizer=optimizer,
num_warmup_steps=0,
num_training_steps=(len(train_dataloader) * num_epochs),
)
# training and evaluation
model = model.to(device)
for epoch in range(num_epochs):
model.train()
total_loss = 0
for step, batch in enumerate(tqdm(train_dataloader)):
batch = {k: v.to(device) for k, v in batch.items()}
outputs = model(**batch)
loss = outputs.loss
total_loss += loss.detach().float()
loss.backward()
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
model.eval()
eval_loss = 0
eval_preds = []
for step, batch in enumerate(tqdm(eval_dataloader)):
batch = {k: v.to(device) for k, v in batch.items()}
with torch.no_grad():
outputs = model(**batch)
loss = outputs.loss
eval_loss += loss.detach().float()
eval_preds.extend(
tokenizer.batch_decode(torch.argmax(outputs.logits, -1).detach().cpu().numpy(), skip_special_tokens=True)
)
eval_epoch_loss = eval_loss / len(eval_dataloader)
eval_ppl = torch.exp(eval_epoch_loss)
train_epoch_loss = total_loss / len(train_dataloader)
train_ppl = torch.exp(train_epoch_loss)
print(f"{epoch=}: {train_ppl=} {train_epoch_loss=} {eval_ppl=} {eval_epoch_loss=}")
# print accuracy
correct = 0
total = 0
for pred, true in zip(eval_preds, dataset["validation"]["text_label"]):
if pred.strip() == true.strip():
correct += 1
total += 1
accuracy = correct / total * 100
print(f"{accuracy=} % on the evaluation dataset")
print(f"{eval_preds[:10]=}")
print(f"{dataset['validation']['text_label'][:10]=}")
# saving model
peft_model_id = f"{model_name_or_path}_{peft_config.peft_type}_{peft_config.task_type}"
model.save_pretrained(peft_model_id)
ckpt = f"{peft_model_id}/adapter_model.bin"
!du -h $ckpt
from peft import PeftModel, PeftConfig
peft_model_id = f"{model_name_or_path}_{peft_config.peft_type}_{peft_config.task_type}"
config = PeftConfig.from_pretrained(peft_model_id)
model = AutoModelForSeq2SeqLM.from_pretrained(config.base_model_name_or_path)
model = PeftModel.from_pretrained(model, peft_model_id)
model.eval()
i = 13
inputs = tokenizer(dataset["validation"][text_column][i], return_tensors="pt")
print(dataset["validation"][text_column][i])
print(inputs)
with torch.no_grad():
outputs = model.generate(input_ids=inputs["input_ids"], max_new_tokens=10)
print(outputs)
print(tokenizer.batch_decode(outputs.detach().cpu().numpy(), skip_special_tokens=True))<jupyter_output>25 November 2010 - Finnish paints and coatings company Tikkurila Oyj ( HEL : TIK1V ) said today that Finnish state-owned investment company Solidium Oy sold its 14.7 % stake in the company for a total of EUR98m .
{'input_ids': tensor([[ 877, 3277, 1068, 259, 264, 515, 143136, 42068, 263,
305, 259, 101264, 263, 5835, 22538, 4496, 2697, 20860,
385, 274, 76347, 259, 267, 259, 93686, 353, 561,
259, 271, 2426, 7883, 533, 515, 143136, 6509, 264,
45815, 37624, 5835, 35133, 16558, 20860, 22026, 2476, 5006,
487, 1448, 259, 96189, 281, 287, 5835, 332, 259,
262, 2725, 304, 2687, 5577, 282, 259, 260, 1]]), 'attention_mask': tensor([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1,[...] | peft/examples/conditional_generation/peft_ia3_seq2seq.ipynb/0 | {
"file_path": "peft/examples/conditional_generation/peft_ia3_seq2seq.ipynb",
"repo_id": "peft",
"token_count": 2685
} | 169 |
<jupyter_start><jupyter_text>Fine-tune FLAN-T5 using `bitsandbytes`, `peft` & `transformers` 🤗 In this notebook we will see how to properly use `peft` , `transformers` & `bitsandbytes` to fine-tune `flan-t5-large` in a google colab!We will finetune the model on [`financial_phrasebank`](https://huggingface.co/datasets/financial_phrasebank) dataset, that consists of pairs of text-labels to classify financial-related sentences, if they are either `positive`, `neutral` or `negative`.Note that you could use the same notebook to fine-tune `flan-t5-xl` as well, but you would need to shard the models first to avoid CPU RAM issues on Google Colab, check [these weights](https://huggingface.co/ybelkada/flan-t5-xl-sharded-bf16). Install requirements<jupyter_code>!pip install -q bitsandbytes datasets accelerate
!pip install -q git+https://github.com/huggingface/transformers.git@main git+https://github.com/huggingface/peft.git@main<jupyter_output>[2K [90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[0m [32m76.3/76.3 MB[0m [31m10.6 MB/s[0m eta [36m0:00:00[0m
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[2K [90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[0m [32m213.0/213.0 KB[0m [31m26.5 MB/s[0m eta [36m0:00:00[0m
[2K [90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━[0m [32m140.6/140.6 KB[0m [31m20.2 MB/s[0m eta [36m0:00:00[0m
[?25h Installing build dependencies ... [?25l[?25hdone
Getting requirements to build wheel ... [?25l[?25hdone
Preparing metadata (pyproject.tom[...]<jupyter_text>Import model and tokenizer<jupyter_code># Select CUDA device index
import os
import torch
os.environ["CUDA_VISIBLE_DEVICES"] = "0"
from datasets import load_dataset
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
model_name = "google/flan-t5-large"
model = AutoModelForSeq2SeqLM.from_pretrained(model_name, load_in_8bit=True)
tokenizer = AutoTokenizer.from_pretrained(model_name)<jupyter_output><empty_output><jupyter_text>Prepare model for training Some pre-processing needs to be done before training such an int8 model using `peft`, therefore let's import an utiliy function `prepare_model_for_int8_training` that will: - Casts all the non `int8` modules to full precision (`fp32`) for stability- Add a `forward_hook` to the input embedding layer to enable gradient computation of the input hidden states- Enable gradient checkpointing for more memory-efficient training<jupyter_code>from peft import prepare_model_for_int8_training
model = prepare_model_for_int8_training(model)<jupyter_output><empty_output><jupyter_text>Load your `PeftModel` Here we will use LoRA (Low-Rank Adaptators) to train our model<jupyter_code>from peft import LoraConfig, get_peft_model, TaskType
def print_trainable_parameters(model):
"""
Prints the number of trainable parameters in the model.
"""
trainable_params = 0
all_param = 0
for _, param in model.named_parameters():
all_param += param.numel()
if param.requires_grad:
trainable_params += param.numel()
print(
f"trainable params: {trainable_params} || all params: {all_param} || trainable%: {100 * trainable_params / all_param}"
)
lora_config = LoraConfig(
r=16, lora_alpha=32, target_modules=["q", "v"], lora_dropout=0.05, bias="none", task_type="SEQ_2_SEQ_LM"
)
model = get_peft_model(model, lora_config)
print_trainable_parameters(model)<jupyter_output>trainable params: 4718592 || all params: 787868672 || trainable%: 0.5989059049678777<jupyter_text>As you can see, here we are only training 0.6% of the parameters of the model! This is a huge memory gain that will enable us to fine-tune the model without any memory issue. Load and process dataHere we will use [`financial_phrasebank`](https://huggingface.co/datasets/financial_phrasebank) dataset to fine-tune our model on sentiment classification on financial sentences. We will load the split `sentences_allagree`, which corresponds according to the model card to the split where there is a 100% annotator agreement.<jupyter_code># loading dataset
dataset = load_dataset("financial_phrasebank", "sentences_allagree")
dataset = dataset["train"].train_test_split(test_size=0.1)
dataset["validation"] = dataset["test"]
del dataset["test"]
classes = dataset["train"].features["label"].names
dataset = dataset.map(
lambda x: {"text_label": [classes[label] for label in x["label"]]},
batched=True,
num_proc=1,
)<jupyter_output><empty_output><jupyter_text>Let's also apply some pre-processing of the input data, the labels needs to be pre-processed, the tokens corresponding to `pad_token_id` needs to be set to `-100` so that the `CrossEntropy` loss associated with the model will correctly ignore these tokens.<jupyter_code># data preprocessing
text_column = "sentence"
label_column = "text_label"
max_length = 128
def preprocess_function(examples):
inputs = examples[text_column]
targets = examples[label_column]
model_inputs = tokenizer(inputs, max_length=max_length, padding="max_length", truncation=True, return_tensors="pt")
labels = tokenizer(targets, max_length=3, padding="max_length", truncation=True, return_tensors="pt")
labels = labels["input_ids"]
labels[labels == tokenizer.pad_token_id] = -100
model_inputs["labels"] = labels
return model_inputs
processed_datasets = dataset.map(
preprocess_function,
batched=True,
num_proc=1,
remove_columns=dataset["train"].column_names,
load_from_cache_file=False,
desc="Running tokenizer on dataset",
)
train_dataset = processed_datasets["train"]
eval_dataset = processed_datasets["validation"]<jupyter_output><empty_output><jupyter_text>Train our model! Let's now train our model, run the cells below.Note that for T5 since some layers are kept in `float32` for stability purposes there is no need to call autocast on the trainer.<jupyter_code>from transformers import TrainingArguments, Trainer
training_args = TrainingArguments(
"temp",
evaluation_strategy="epoch",
learning_rate=1e-3,
gradient_accumulation_steps=1,
auto_find_batch_size=True,
num_train_epochs=1,
save_steps=100,
save_total_limit=8,
)
trainer = Trainer(
model=model,
args=training_args,
train_dataset=train_dataset,
eval_dataset=eval_dataset,
)
model.config.use_cache = False # silence the warnings. Please re-enable for inference!
trainer.train()<jupyter_output>/usr/local/lib/python3.8/dist-packages/transformers/optimization.py:346: FutureWarning: This implementation of AdamW is deprecated and will be removed in a future version. Use the PyTorch implementation torch.optim.AdamW instead, or set `no_deprecation_warning=True` to disable this warning
warnings.warn(
***** Running training *****
Num examples = 2037
Num Epochs = 1
Instantaneous batch size per device = 8
Total train batch size (w. parallel, distributed & accumulation) = 8
Gradient Accumulation steps = 1
Total optimization steps = 255
Number of trainable parameters = 4718592
/usr/local/lib/python3.8/dist-packages/bitsandbytes/autograd/_functions.py:298: UserWarning: MatMul8bitLt: inputs will be cast from torch.float32 to float16 during quantization
warnings.warn(f"MatMul8bitLt: inputs will be cast from {A.dtype} to float16 during quantization")<jupyter_text>Qualitatively test our model Let's have a quick qualitative evaluation of the model, by taking a sample from the dataset that corresponds to a positive label. Run your generation similarly as you were running your model from `transformers`:<jupyter_code>model.eval()
input_text = "In January-September 2009 , the Group 's net interest income increased to EUR 112.4 mn from EUR 74.3 mn in January-September 2008 ."
inputs = tokenizer(input_text, return_tensors="pt")
outputs = model.generate(input_ids=inputs["input_ids"], max_new_tokens=10)
print("input sentence: ", input_text)
print(" output prediction: ", tokenizer.batch_decode(outputs.detach().cpu().numpy(), skip_special_tokens=True))<jupyter_output>Generate config GenerationConfig {
"_from_model_config": true,
"decoder_start_token_id": 0,
"eos_token_id": 1,
"pad_token_id": 0,
"transformers_version": "4.27.0.dev0",
"use_cache": false
}
/usr/local/lib/python3.8/dist-packages/bitsandbytes/autograd/_functions.py:298: UserWarning: MatMul8bitLt: inputs will be cast from torch.float32 to float16 during quantization
warnings.warn(f"MatMul8bitLt: inputs will be cast from {A.dtype} to float16 during quantization")
/usr/local/lib/python3.8/dist-packages/transformers/generation/utils.py:1374: UserWarning: You are calling .generate() with the `input_ids` being on a device type different than your model's device. `input_ids` is on cpu, whereas the model is on cuda. You may experience unexpected behaviors or slower generation. Please make sure that you have put `input_ids` to the correct device by calling for example input_ids = input_ids.to('cuda') before running `.generate()`.
warnings.warn(<jupyter_text>Share your adapters on 🤗 Hub Once you have trained your adapter, you can easily share it on the Hub using the method `push_to_hub` . Note that only the adapter weights and config will be pushed<jupyter_code>from huggingface_hub import notebook_login
notebook_login()
model.push_to_hub("ybelkada/flan-t5-large-financial-phrasebank-lora", use_auth_token=True)<jupyter_output>Uploading the following files to ybelkada/flan-t5-large-lora: adapter_model.bin,adapter_config.json<jupyter_text>Load your adapter from the Hub You can load the model together with the adapter with few lines of code! Check the snippet below to load the adapter from the Hub and run the example evaluation!<jupyter_code>import torch
from peft import PeftModel, PeftConfig
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
peft_model_id = "ybelkada/flan-t5-large-financial-phrasebank-lora"
config = PeftConfig.from_pretrained(peft_model_id)
model = AutoModelForSeq2SeqLM.from_pretrained(config.base_model_name_or_path, torch_dtype="auto", device_map="auto")
tokenizer = AutoTokenizer.from_pretrained(config.base_model_name_or_path)
# Load the Lora model
model = PeftModel.from_pretrained(model, peft_model_id)
model.eval()
input_text = "In January-September 2009 , the Group 's net interest income increased to EUR 112.4 mn from EUR 74.3 mn in January-September 2008 ."
inputs = tokenizer(input_text, return_tensors="pt")
outputs = model.generate(input_ids=inputs["input_ids"], max_new_tokens=10)
print("input sentence: ", input_text)
print(" output prediction: ", tokenizer.batch_decode(outputs.detach().cpu().numpy(), skip_special_tokens=True))<jupyter_output>Generate config GenerationConfig {
"_from_model_config": true,
"decoder_start_token_id": 0,
"eos_token_id": 1,
"pad_token_id": 0,
"transformers_version": "4.27.0.dev0"
}
/usr/local/lib/python3.8/dist-packages/transformers/generation/utils.py:1374: UserWarning: You are calling .generate() with the `input_ids` being on a device type different than your model's device. `input_ids` is on cpu, whereas the model is on cuda. You may experience unexpected behaviors or slower generation. Please make sure that you have put `input_ids` to the correct device by calling for example input_ids = input_ids.to('cuda') before running `.generate()`.
warnings.warn( | peft/examples/int8_training/Finetune_flan_t5_large_bnb_peft.ipynb/0 | {
"file_path": "peft/examples/int8_training/Finetune_flan_t5_large_bnb_peft.ipynb",
"repo_id": "peft",
"token_count": 4274
} | 170 |
<jupyter_start><jupyter_text>IntroductionIn this notebook, we are going to fine-tune the LayoutLM model by Microsoft Research on the [FUNSD](https://guillaumejaume.github.io/FUNSD/) dataset, which is a collection of annotated form documents. The goal of our model is to learn the annotations of a number of labels ("question", "answer", "header" and "other") on those forms, such that it can be used to annotate unseen forms in the future.* Original LayoutLM paper: https://arxiv.org/abs/1912.13318* Original FUNSD paper: https://arxiv.org/abs/1905.13538 Install librariesCurrently you have to first install the `unilm` package, and then the `transformers` package (which updates the outdated `transformers` package that is included in the `unilm` package). The reason we also install the `unilm` package is because we need its preprocessing files. I've forked it, and removed some statements which introduced some issues.<jupyter_code># ! rm -r unilm
# ! pip install unilm<jupyter_output><empty_output><jupyter_text>Getting the dataHere we download the data of the [FUNSD dataset](https://guillaumejaume.github.io/FUNSD/) from the web. This results in a directory called "data" being created, which has 2 subdirectories, one for training and one for testing. Each of those has 2 subdirectories in turn, one containing the images as png files and one containing the annotations in json format.<jupyter_code># ! wget https://guillaumejaume.github.io/FUNSD/dataset.zip
# ! unzip dataset.zip && mv dataset data && rm -rf dataset.zip __MACOSX<jupyter_output><empty_output><jupyter_text>Let's take a look at a training example. For this, we are going to use PIL (Python Image Library).<jupyter_code>from PIL import Image, ImageDraw, ImageFont
import os
base_path = "/home/sourab/temp/data/dataset"
image = Image.open(os.path.join(base_path, "training_data/images/0000971160.png"))
image = image.convert("RGB")
image<jupyter_output><empty_output><jupyter_text>Now let's plot its corresponding annotations. Basically, if you type `data['form']`, you get a list of all general annotations. Each general annotation has a label, a bounding box, and one or more words, which in also have their own bounding box. The bounding boxes are in [xleft, ytop, xright, ybottom] format.<jupyter_code>import json
with open(os.path.join(base_path, "training_data/annotations/0000971160.json")) as f:
data = json.load(f)
for annotation in data["form"]:
print(annotation)<jupyter_output><empty_output><jupyter_text>The PIL library has a handy ImageDraw module, which -you guessed it- allows to draw things (such as rectangles) on an image:<jupyter_code>draw = ImageDraw.Draw(image, "RGBA")
font = ImageFont.load_default()
label2color = {"question": "blue", "answer": "green", "header": "orange", "other": "violet"}
for annotation in data["form"]:
label = annotation["label"]
general_box = annotation["box"]
draw.rectangle(general_box, outline=label2color[label], width=2)
draw.text((general_box[0] + 10, general_box[1] - 10), label, fill=label2color[label], font=font)
words = annotation["words"]
for word in words:
box = word["box"]
draw.rectangle(box, outline=label2color[label], width=1)
image<jupyter_output><empty_output><jupyter_text>Preprocessing the dataNext, we need to turn the document images into individual tokens and corresponding labels (BIOES format, see further). We do this both for the training and test datasets. Make sure to run this from the `/content` directory:<jupyter_code># ! python unilm/layoutlm/examples/seq_labeling/preprocess.py --data_dir data/dataset/training_data/annotations \
# --data_split train \
# --output_dir data \
# --model_name_or_path microsoft/layoutlm-base-uncased \
# --max_len 510
# ! python unilm/layoutlm/examples/seq_labeling/preprocess.py --data_dir data/dataset/testing_data/annotations \
# --data_split test \
# --output_dir data \
# --model_name_or_path microsoft/layoutlm-base-uncased \
# --max_len 510<jupyter_output><empty_output><jupyter_text>Next, we create a labels.txt file that contains the unique labels of the FUNSD dataset:<jupyter_code># ! cat data/train.txt | cut -d$'\t' -f 2 | grep -v "^$"| sort | uniq > data/labels.txt<jupyter_output><empty_output><jupyter_text>Define a PyTorch datasetFirst, we create a list containing the unique labels based on `data/labels.txt` (run this from the content directory):<jupyter_code>from torch.nn import CrossEntropyLoss
def get_labels(path):
with open(path, "r") as f:
labels = f.read().splitlines()
if "O" not in labels:
labels = ["O"] + labels
return labels
labels = get_labels("data/labels.txt")
num_labels = len(labels)
label_map = {i: label for i, label in enumerate(labels)}
# Use cross entropy ignore index as padding label id so that only real label ids contribute to the loss later
pad_token_label_id = CrossEntropyLoss().ignore_index<jupyter_output><empty_output><jupyter_text>We can see that the dataset uses the so-called BIOES annotation scheme to annotate the tokens. This means that a given token can be either at the beginning (B), inside (I), outside (O), at the end (E) or start (S) of a given entity. Entities include ANSWER, QUESTION, HEADER and OTHER:<jupyter_code>print(labels)<jupyter_output>['B-ANSWER', 'B-HEADER', 'B-QUESTION', 'E-ANSWER', 'E-HEADER', 'E-QUESTION', 'I-ANSWER', 'I-HEADER', 'I-QUESTION', 'O', 'S-ANSWER', 'S-HEADER', 'S-QUESTION']<jupyter_text>Next, we can create a PyTorch dataset and corresponding dataloader (both for training and evaluation):<jupyter_code>import logging
import os
import torch
from torch.utils.data import Dataset
logger = logging.getLogger(__name__)
class FunsdDataset(Dataset):
def __init__(self, args, tokenizer, labels, pad_token_label_id, mode):
if args.local_rank not in [-1, 0] and mode == "train":
torch.distributed.barrier() # Make sure only the first process in distributed training process the dataset, and the others will use the cache
# Load data features from cache or dataset file
cached_features_file = os.path.join(
args.data_dir,
"cached_{}_{}_{}".format(
mode,
list(filter(None, args.model_name_or_path.split("/"))).pop(),
str(args.max_seq_length),
),
)
if os.path.exists(cached_features_file) and not args.overwrite_cache:
logger.info("Loading features from cached file %s", cached_features_file)
features = torch.load(cached_features_file)
else:
logger.info("Creating features from dataset file at %s", args.data_dir)
examples = read_examples_from_file(args.data_dir, mode)
features = convert_examples_to_features(
examples,
labels,
args.max_seq_length,
tokenizer,
cls_token_at_end=bool(args.model_type in ["xlnet"]),
# xlnet has a cls token at the end
cls_token=tokenizer.cls_token,
cls_token_segment_id=2 if args.model_type in ["xlnet"] else 0,
sep_token=tokenizer.sep_token,
sep_token_extra=bool(args.model_type in ["roberta"]),
# roberta uses an extra separator b/w pairs of sentences, cf. github.com/pytorch/fairseq/commit/1684e166e3da03f5b600dbb7855cb98ddfcd0805
pad_on_left=bool(args.model_type in ["xlnet"]),
# pad on the left for xlnet
pad_token=tokenizer.convert_tokens_to_ids([tokenizer.pad_token])[0],
pad_token_segment_id=4 if args.model_type in ["xlnet"] else 0,
pad_token_label_id=pad_token_label_id,
)
# if args.local_rank in [-1, 0]:
# logger.info("Saving features into cached file %s", cached_features_file)
# torch.save(features, cached_features_file)
if args.local_rank == 0 and mode == "train":
torch.distributed.barrier() # Make sure only the first process in distributed training process the dataset, and the others will use the cache
self.features = features
# Convert to Tensors and build dataset
self.all_input_ids = torch.tensor([f.input_ids for f in features], dtype=torch.long)
self.all_input_mask = torch.tensor([f.input_mask for f in features], dtype=torch.long)
self.all_segment_ids = torch.tensor([f.segment_ids for f in features], dtype=torch.long)
self.all_label_ids = torch.tensor([f.label_ids for f in features], dtype=torch.long)
self.all_bboxes = torch.tensor([f.boxes for f in features], dtype=torch.long)
def __len__(self):
return len(self.features)
def __getitem__(self, index):
return (
self.all_input_ids[index],
self.all_input_mask[index],
self.all_segment_ids[index],
self.all_label_ids[index],
self.all_bboxes[index],
)
class InputExample(object):
"""A single training/test example for token classification."""
def __init__(self, guid, words, labels, boxes, actual_bboxes, file_name, page_size):
"""Constructs a InputExample.
Args:
guid: Unique id for the example.
words: list. The words of the sequence.
labels: (Optional) list. The labels for each word of the sequence. This should be
specified for train and dev examples, but not for test examples.
"""
self.guid = guid
self.words = words
self.labels = labels
self.boxes = boxes
self.actual_bboxes = actual_bboxes
self.file_name = file_name
self.page_size = page_size
class InputFeatures(object):
"""A single set of features of data."""
def __init__(
self,
input_ids,
input_mask,
segment_ids,
label_ids,
boxes,
actual_bboxes,
file_name,
page_size,
):
assert (
0 <= all(boxes) <= 1000
), "Error with input bbox ({}): the coordinate value is not between 0 and 1000".format(boxes)
self.input_ids = input_ids
self.input_mask = input_mask
self.segment_ids = segment_ids
self.label_ids = label_ids
self.boxes = boxes
self.actual_bboxes = actual_bboxes
self.file_name = file_name
self.page_size = page_size
def read_examples_from_file(data_dir, mode):
file_path = os.path.join(data_dir, "{}.txt".format(mode))
box_file_path = os.path.join(data_dir, "{}_box.txt".format(mode))
image_file_path = os.path.join(data_dir, "{}_image.txt".format(mode))
guid_index = 1
examples = []
with open(file_path, encoding="utf-8") as f, open(box_file_path, encoding="utf-8") as fb, open(
image_file_path, encoding="utf-8"
) as fi:
words = []
boxes = []
actual_bboxes = []
file_name = None
page_size = None
labels = []
for line, bline, iline in zip(f, fb, fi):
if line.startswith("-DOCSTART-") or line == "" or line == "\n":
if words:
examples.append(
InputExample(
guid="{}-{}".format(mode, guid_index),
words=words,
labels=labels,
boxes=boxes,
actual_bboxes=actual_bboxes,
file_name=file_name,
page_size=page_size,
)
)
guid_index += 1
words = []
boxes = []
actual_bboxes = []
file_name = None
page_size = None
labels = []
else:
splits = line.split("\t")
bsplits = bline.split("\t")
isplits = iline.split("\t")
assert len(splits) == 2
assert len(bsplits) == 2
assert len(isplits) == 4
assert splits[0] == bsplits[0]
words.append(splits[0])
if len(splits) > 1:
labels.append(splits[-1].replace("\n", ""))
box = bsplits[-1].replace("\n", "")
box = [int(b) for b in box.split()]
boxes.append(box)
actual_bbox = [int(b) for b in isplits[1].split()]
actual_bboxes.append(actual_bbox)
page_size = [int(i) for i in isplits[2].split()]
file_name = isplits[3].strip()
else:
# Examples could have no label for mode = "test"
labels.append("O")
if words:
examples.append(
InputExample(
guid="%s-%d".format(mode, guid_index),
words=words,
labels=labels,
boxes=boxes,
actual_bboxes=actual_bboxes,
file_name=file_name,
page_size=page_size,
)
)
return examples
def convert_examples_to_features(
examples,
label_list,
max_seq_length,
tokenizer,
cls_token_at_end=False,
cls_token="[CLS]",
cls_token_segment_id=1,
sep_token="[SEP]",
sep_token_extra=False,
pad_on_left=False,
pad_token=0,
cls_token_box=[0, 0, 0, 0],
sep_token_box=[1000, 1000, 1000, 1000],
pad_token_box=[0, 0, 0, 0],
pad_token_segment_id=0,
pad_token_label_id=-1,
sequence_a_segment_id=0,
mask_padding_with_zero=True,
):
"""Loads a data file into a list of `InputBatch`s
`cls_token_at_end` define the location of the CLS token:
- False (Default, BERT/XLM pattern): [CLS] + A + [SEP] + B + [SEP]
- True (XLNet/GPT pattern): A + [SEP] + B + [SEP] + [CLS]
`cls_token_segment_id` define the segment id associated to the CLS token (0 for BERT, 2 for XLNet)
"""
label_map = {label: i for i, label in enumerate(label_list)}
features = []
for ex_index, example in enumerate(examples):
file_name = example.file_name
page_size = example.page_size
width, height = page_size
if ex_index % 10000 == 0:
logger.info("Writing example %d of %d", ex_index, len(examples))
tokens = []
token_boxes = []
actual_bboxes = []
label_ids = []
for word, label, box, actual_bbox in zip(example.words, example.labels, example.boxes, example.actual_bboxes):
word_tokens = tokenizer.tokenize(word)
tokens.extend(word_tokens)
token_boxes.extend([box] * len(word_tokens))
actual_bboxes.extend([actual_bbox] * len(word_tokens))
# Use the real label id for the first token of the word, and padding ids for the remaining tokens
label_ids.extend([label_map[label]] + [pad_token_label_id] * (len(word_tokens) - 1))
# Account for [CLS] and [SEP] with "- 2" and with "- 3" for RoBERTa.
special_tokens_count = 3 if sep_token_extra else 2
if len(tokens) > max_seq_length - special_tokens_count:
tokens = tokens[: (max_seq_length - special_tokens_count)]
token_boxes = token_boxes[: (max_seq_length - special_tokens_count)]
actual_bboxes = actual_bboxes[: (max_seq_length - special_tokens_count)]
label_ids = label_ids[: (max_seq_length - special_tokens_count)]
# The convention in BERT is:
# (a) For sequence pairs:
# tokens: [CLS] is this jack ##son ##ville ? [SEP] no it is not . [SEP]
# type_ids: 0 0 0 0 0 0 0 0 1 1 1 1 1 1
# (b) For single sequences:
# tokens: [CLS] the dog is hairy . [SEP]
# type_ids: 0 0 0 0 0 0 0
#
# Where "type_ids" are used to indicate whether this is the first
# sequence or the second sequence. The embedding vectors for `type=0` and
# `type=1` were learned during pre-training and are added to the wordpiece
# embedding vector (and position vector). This is not *strictly* necessary
# since the [SEP] token unambiguously separates the sequences, but it makes
# it easier for the model to learn the concept of sequences.
#
# For classification tasks, the first vector (corresponding to [CLS]) is
# used as as the "sentence vector". Note that this only makes sense because
# the entire model is fine-tuned.
tokens += [sep_token]
token_boxes += [sep_token_box]
actual_bboxes += [[0, 0, width, height]]
label_ids += [pad_token_label_id]
if sep_token_extra:
# roberta uses an extra separator b/w pairs of sentences
tokens += [sep_token]
token_boxes += [sep_token_box]
actual_bboxes += [[0, 0, width, height]]
label_ids += [pad_token_label_id]
segment_ids = [sequence_a_segment_id] * len(tokens)
if cls_token_at_end:
tokens += [cls_token]
token_boxes += [cls_token_box]
actual_bboxes += [[0, 0, width, height]]
label_ids += [pad_token_label_id]
segment_ids += [cls_token_segment_id]
else:
tokens = [cls_token] + tokens
token_boxes = [cls_token_box] + token_boxes
actual_bboxes = [[0, 0, width, height]] + actual_bboxes
label_ids = [pad_token_label_id] + label_ids
segment_ids = [cls_token_segment_id] + segment_ids
input_ids = tokenizer.convert_tokens_to_ids(tokens)
# The mask has 1 for real tokens and 0 for padding tokens. Only real
# tokens are attended to.
input_mask = [1 if mask_padding_with_zero else 0] * len(input_ids)
# Zero-pad up to the sequence length.
padding_length = max_seq_length - len(input_ids)
if pad_on_left:
input_ids = ([pad_token] * padding_length) + input_ids
input_mask = ([0 if mask_padding_with_zero else 1] * padding_length) + input_mask
segment_ids = ([pad_token_segment_id] * padding_length) + segment_ids
label_ids = ([pad_token_label_id] * padding_length) + label_ids
token_boxes = ([pad_token_box] * padding_length) + token_boxes
else:
input_ids += [pad_token] * padding_length
input_mask += [0 if mask_padding_with_zero else 1] * padding_length
segment_ids += [pad_token_segment_id] * padding_length
label_ids += [pad_token_label_id] * padding_length
token_boxes += [pad_token_box] * padding_length
assert len(input_ids) == max_seq_length
assert len(input_mask) == max_seq_length
assert len(segment_ids) == max_seq_length
assert len(label_ids) == max_seq_length
assert len(token_boxes) == max_seq_length
if ex_index < 5:
logger.info("*** Example ***")
logger.info("guid: %s", example.guid)
logger.info("tokens: %s", " ".join([str(x) for x in tokens]))
logger.info("input_ids: %s", " ".join([str(x) for x in input_ids]))
logger.info("input_mask: %s", " ".join([str(x) for x in input_mask]))
logger.info("segment_ids: %s", " ".join([str(x) for x in segment_ids]))
logger.info("label_ids: %s", " ".join([str(x) for x in label_ids]))
logger.info("boxes: %s", " ".join([str(x) for x in token_boxes]))
logger.info("actual_bboxes: %s", " ".join([str(x) for x in actual_bboxes]))
features.append(
InputFeatures(
input_ids=input_ids,
input_mask=input_mask,
segment_ids=segment_ids,
label_ids=label_ids,
boxes=token_boxes,
actual_bboxes=actual_bboxes,
file_name=file_name,
page_size=page_size,
)
)
return features
from transformers import LayoutLMTokenizer
# from .unilm.layoutlm.data.funsd import FunsdDataset, InputFeatures
from torch.utils.data import DataLoader, RandomSampler, SequentialSampler
batch_size = 16
args = {
"local_rank": -1,
"overwrite_cache": True,
"data_dir": "/home/sourab/temp/data/",
"model_name_or_path": "microsoft/layoutlm-base-uncased",
"max_seq_length": 512,
"model_type": "layoutlm",
}
# class to turn the keys of a dict into attributes (thanks Stackoverflow)
class AttrDict(dict):
def __init__(self, *args, **kwargs):
super(AttrDict, self).__init__(*args, **kwargs)
self.__dict__ = self
args = AttrDict(args)
tokenizer = LayoutLMTokenizer.from_pretrained("microsoft/layoutlm-base-uncased")
# the LayoutLM authors already defined a specific FunsdDataset, so we are going to use this here
train_dataset = FunsdDataset(args, tokenizer, labels, pad_token_label_id, mode="train")
train_sampler = RandomSampler(train_dataset)
train_dataloader = DataLoader(train_dataset, sampler=train_sampler, batch_size=batch_size)
eval_dataset = FunsdDataset(args, tokenizer, labels, pad_token_label_id, mode="test")
eval_sampler = SequentialSampler(eval_dataset)
eval_dataloader = DataLoader(eval_dataset, sampler=eval_sampler, batch_size=batch_size)
len(train_dataloader)
len(eval_dataloader)
batch = next(iter(train_dataloader))
input_ids = batch[0][0]
tokenizer.decode(input_ids)<jupyter_output><empty_output><jupyter_text>Define and fine-tune the modelAs this is a sequence labeling task, we are going to load `LayoutLMForTokenClassification` (the base sized model) from the hub. We are going to fine-tune it on a downstream task, namely FUNSD.<jupyter_code>from peft import get_peft_config, PeftModel, get_peft_model, LoraConfig, TaskType
peft_config = LoraConfig(
task_type=TaskType.TOKEN_CLS, inference_mode=False, r=16, lora_alpha=16, lora_dropout=0.1, bias="all"
)
peft_config
from transformers import LayoutLMForTokenClassification
import torch
from transformers import set_seed
seed = 100
set_seed(seed)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model = LayoutLMForTokenClassification.from_pretrained("microsoft/layoutlm-base-uncased", num_labels=num_labels)
model = get_peft_model(model, peft_config)
model.to(device)
print(model.model.layoutlm.encoder.layer[0].attention.self.query.weight)
print(model.model.layoutlm.encoder.layer[0].attention.self.query.lora_A.weight)
print(model.model.classifier.weight)<jupyter_output><empty_output><jupyter_text>Now we can start training:<jupyter_code>from transformers import AdamW, get_linear_schedule_with_warmup
from tqdm import tqdm
num_train_epochs = 100
optimizer = torch.optim.AdamW(model.parameters(), lr=3e-3)
lr_scheduler = get_linear_schedule_with_warmup(
optimizer=optimizer,
num_warmup_steps=0.06 * (len(train_dataloader) * num_train_epochs),
num_training_steps=(len(train_dataloader) * num_train_epochs),
)
global_step = 0
t_total = len(train_dataloader) * num_train_epochs # total number of training steps
# put the model in training mode
model.train()
for epoch in range(num_train_epochs):
for batch in tqdm(train_dataloader, desc="Training"):
input_ids = batch[0].to(device)
bbox = batch[4].to(device)
attention_mask = batch[1].to(device)
token_type_ids = batch[2].to(device)
labels = batch[3].to(device)
# forward pass
outputs = model(
input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=labels
)
loss = outputs.loss
# print loss every 100 steps
if global_step % 10 == 0:
print(f"Loss after {global_step} steps: {loss.item()}")
# backward pass to get the gradients
loss.backward()
# print("Gradients on classification head:")
# print(model.classifier.weight.grad[6,:].sum())
# update
optimizer.step()
lr_scheduler.step()
optimizer.zero_grad()
global_step += 1
import numpy as np
from seqeval.metrics import (
classification_report,
f1_score,
precision_score,
recall_score,
)
eval_loss = 0.0
nb_eval_steps = 0
preds = None
out_label_ids = None
# put model in evaluation mode
model.eval()
for batch in tqdm(eval_dataloader, desc="Evaluating"):
with torch.no_grad():
input_ids = batch[0].to(device)
bbox = batch[4].to(device)
attention_mask = batch[1].to(device)
token_type_ids = batch[2].to(device)
labels = batch[3].to(device)
# forward pass
outputs = model(
input_ids=input_ids, bbox=bbox, attention_mask=attention_mask, token_type_ids=token_type_ids, labels=labels
)
# get the loss and logits
tmp_eval_loss = outputs.loss
logits = outputs.logits
eval_loss += tmp_eval_loss.item()
nb_eval_steps += 1
# compute the predictions
if preds is None:
preds = logits.detach().cpu().numpy()
out_label_ids = labels.detach().cpu().numpy()
else:
preds = np.append(preds, logits.detach().cpu().numpy(), axis=0)
out_label_ids = np.append(out_label_ids, labels.detach().cpu().numpy(), axis=0)
# compute average evaluation loss
eval_loss = eval_loss / nb_eval_steps
preds = np.argmax(preds, axis=2)
out_label_list = [[] for _ in range(out_label_ids.shape[0])]
preds_list = [[] for _ in range(out_label_ids.shape[0])]
for i in range(out_label_ids.shape[0]):
for j in range(out_label_ids.shape[1]):
if out_label_ids[i, j] != pad_token_label_id:
out_label_list[i].append(label_map[out_label_ids[i][j]])
preds_list[i].append(label_map[preds[i][j]])
results = {
"loss": eval_loss,
"precision": precision_score(out_label_list, preds_list),
"recall": recall_score(out_label_list, preds_list),
"f1": f1_score(out_label_list, preds_list),
}
print(results)
model.print_trainable_parameters()
model.save_pretrained("peft_layoutlm")
!du -h "peft_layoutlm/adapter_model.bin"<jupyter_output>2,8M layoutlm_funsd.pt | peft/examples/token_classification/peft_lora_token_cls.ipynb/0 | {
"file_path": "peft/examples/token_classification/peft_lora_token_cls.ipynb",
"repo_id": "peft",
"token_count": 11949
} | 171 |
# coding=utf-8
# Copyright 2023-present the HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import warnings
from typing import Any, List, Optional
import torch
import torch.nn as nn
from transformers.pytorch_utils import Conv1D
from peft.tuners.tuners_utils import BaseTunerLayer, check_adapters_to_merge
from peft.utils import transpose
class IA3Layer(BaseTunerLayer):
# All names of layers that may contain adapter weights
adapter_layer_names = ("ia3_l",)
def __init__(self, base_layer: nn.Module, is_feedforward: bool, **kwargs) -> None:
self.base_layer = base_layer
self.ia3_l = nn.ParameterDict({})
# Mark the weight as unmerged
self._disable_adapters = False
self.merged_adapters = []
self.is_feedforward = is_feedforward
base_layer = self.get_base_layer()
if isinstance(base_layer, nn.Linear):
in_features, out_features = base_layer.in_features, base_layer.out_features
elif isinstance(base_layer, nn.Conv2d):
in_features, out_features = base_layer.in_channels, base_layer.out_channels
elif isinstance(base_layer, nn.Embedding):
in_features, out_features = base_layer.num_embeddings, base_layer.embedding_dim
elif isinstance(base_layer, Conv1D):
in_features, out_features = (
base_layer.weight.ds_shape if hasattr(base_layer.weight, "ds_shape") else base_layer.weight.shape
)
else:
raise ValueError(f"Unsupported layer type {type(base_layer)}")
self.in_features = in_features
self.out_features = out_features
def update_layer(self, adapter_name, init_ia3_weights):
# This code works for linear layers, override for other layer types
# Actual trainable parameters
if self.is_feedforward:
weight = torch.randn((1, self.in_features))
else:
weight = torch.randn((self.out_features, 1))
self.ia3_l[adapter_name] = nn.Parameter(weight)
if init_ia3_weights:
self.reset_ia3_parameters(adapter_name)
self.to(self.get_base_layer().weight.device)
self.set_adapter(self.active_adapters)
def reset_ia3_parameters(self, adapter_name):
if adapter_name in self.ia3_l.keys():
# initialize learned vector with torch.ones
nn.init.constant_(self.ia3_l[adapter_name], 1.0)
class Linear(nn.Module, IA3Layer):
# (IA)^3 implemented in a dense layer
def __init__(
self,
base_layer: nn.Module,
adapter_name: str,
fan_in_fan_out: bool = False, # Set this to True if the layer to replace stores weight like (fan_in, fan_out)
is_feedforward: bool = False, # Set to True if the layer is treated as a feedforward layer
is_target_conv_1d_layer: bool = False, # whether target module is a conv1d layer. useful while unloading later
init_ia3_weights: bool = True, # whether to initialize IA3 weights
**kwargs,
) -> None:
super().__init__()
IA3Layer.__init__(self, base_layer, is_feedforward=is_feedforward)
self.fan_in_fan_out = fan_in_fan_out
self.is_target_conv_1d_layer = is_target_conv_1d_layer
self._active_adapter = adapter_name
self.update_layer(adapter_name, init_ia3_weights)
def merge(self, safe_merge: bool = False, adapter_names: Optional[List[str]] = None) -> None:
"""
Merge the active adapter weights into the base weights
Args:
safe_merge (`bool`, *optional*):
If True, the merge operation will be performed in a copy of the original weights and check for NaNs
before merging the weights. This is useful if you want to check if the merge operation will produce
NaNs. Defaults to `False`.
adapter_names (`List[str]`, *optional*):
The list of adapter names that should be merged. If None, all active adapters will be merged. Defaults
to `None`.
"""
adapter_names = check_adapters_to_merge(self, adapter_names)
if not adapter_names:
# no adapter to merge
return
for active_adapter in adapter_names:
if active_adapter in self.ia3_l.keys():
base_layer = self.get_base_layer()
ia3_l = transpose(self.ia3_l[active_adapter].data, self.fan_in_fan_out)
if safe_merge:
orig_weights = base_layer.weight.data
orig_weights = torch.mul(orig_weights, ia3_l)
if not torch.isfinite(orig_weights).all():
raise ValueError(
f"NaNs detected in the merged weights. The adapter {active_adapter} seems to be broken"
)
base_layer.weight.data = orig_weights
else:
base_layer.weight.data = torch.mul(base_layer.weight.data, ia3_l)
if not self.is_feedforward and (base_layer.bias is not None):
scaling = self.ia3_l[active_adapter].reshape(base_layer.bias.shape)
base_layer.bias.data = torch.mul(base_layer.bias.data, scaling.data)
self.merged_adapters.append(active_adapter)
def unmerge(self) -> None:
"""
This method unmerges all merged adapter layers from the base weights.
"""
if not self.merged:
warnings.warn("Already unmerged. Nothing to do.")
return
warnings.warn("Unmerge result can be inaccurate for (IA)^3.")
while len(self.merged_adapters) > 0:
active_adapter = self.merged_adapters.pop()
if active_adapter in self.ia3_l.keys():
base_layer = self.get_base_layer()
# Add tolerace to avoid division by zero
ia3_l = transpose(self.ia3_l[active_adapter].data, self.fan_in_fan_out) + 1e-8
base_layer.weight.data = torch.div(base_layer.weight.data, ia3_l)
if not self.is_feedforward and (base_layer.bias is not None):
scaling = self.ia3_l[active_adapter].reshape(base_layer.bias.shape)
base_layer.bias.data = torch.div(base_layer.bias.data, scaling.data + 1e-8)
def forward(self, x: torch.Tensor, *args: Any, **kwargs: Any) -> torch.Tensor:
dtype = previous_dtype = x.dtype
if self.disable_adapters:
if self.merged:
self.unmerge()
result = self.base_layer(x, *args, **kwargs)
elif self.merged:
result = self.base_layer(x, *args, **kwargs)
else:
ia3_scaling = 1
for active_adapter in self.active_adapters:
if active_adapter not in self.ia3_l.keys():
continue
dtype = self.ia3_l[active_adapter].dtype
ia3_scaling *= self.ia3_l[active_adapter].flatten()
if self.is_feedforward:
x = x.to(dtype)
# TODO: weight.dtype can be != self.ia3_l[self.active_adapters].dtype
# e.g. bf16 vs fp32. Is that okay?
interm = (x * ia3_scaling).to(self.get_base_layer().weight.dtype)
result = self.base_layer(interm, *args, **kwargs)
else:
result = self.base_layer(x, *args, **kwargs)
result = result.to(dtype) * ia3_scaling
result = result.to(previous_dtype)
return result
class Conv2d(nn.Module, IA3Layer):
def __init__(
self,
base_layer: nn.Module,
adapter_name: str,
fan_in_fan_out: bool = False, # Set this to True if the layer to replace stores weight like (fan_in, fan_out)
is_feedforward: bool = False, # Set to True if the layer is treated as a feedforward layer
init_ia3_weights: bool = True,
**kwargs,
) -> None:
super().__init__()
IA3Layer.__init__(self, base_layer, is_feedforward=is_feedforward)
self.fan_in_fan_out = fan_in_fan_out
self._active_adapter = adapter_name
self.update_layer(adapter_name, init_ia3_weights)
def update_layer(self, adapter_name, init_ia3_weights):
# Actual trainable parameters
if self.is_feedforward:
weight = torch.randn((1, self.in_features, 1, 1))
else:
weight = torch.randn((1, self.out_features, 1, 1))
self.ia3_l[adapter_name] = nn.Parameter(weight)
if init_ia3_weights:
self.reset_ia3_parameters(adapter_name)
self.to(self.get_base_layer().weight.device)
self.set_adapter(self.active_adapters)
def merge(self, safe_merge: bool = False, adapter_names: Optional[List[str]] = None) -> None:
"""
Merge the active adapter weights into the base weights
Args:
safe_merge (`bool`, *optional*):
If True, the merge operation will be performed in a copy of the original weights and check for NaNs
before merging the weights. This is useful if you want to check if the merge operation will produce
NaNs. Defaults to `False`.
adapter_names (`List[str]`, *optional*):
The list of adapter names that should be merged. If None, all active adapters will be merged. Defaults
to `None`.
"""
adapter_names = check_adapters_to_merge(self, adapter_names)
if not adapter_names:
# no adapter to merge
return
for active_adapter in adapter_names:
if active_adapter in self.ia3_l.keys():
base_layer = self.get_base_layer()
ia3_scaling = self.ia3_l[active_adapter].data
if not self.is_feedforward:
ia3_scaling = ia3_scaling.permute(1, 0, 2, 3)
if safe_merge:
output_weight = torch.mul(base_layer.weight.data, ia3_scaling).clone()
if not torch.isfinite(output_weight).all():
raise ValueError(
f"NaNs detected in the merged weights. The adapter {active_adapter} seems to be broken"
)
base_layer.weight.data = output_weight
else:
base_layer.weight.data = torch.mul(base_layer.weight.data, ia3_scaling)
if not self.is_feedforward and (base_layer.bias is not None):
scaling = self.ia3_l[active_adapter].reshape(base_layer.bias.shape)
base_layer.bias.data = torch.mul(base_layer.bias.data, scaling.data)
self.merged_adapters.append(active_adapter)
def unmerge(self) -> None:
"""
This method unmerges all merged adapter layers from the base weights.
"""
if not self.merged:
warnings.warn("Already unmerged. Nothing to do.")
return
warnings.warn("Unmerge result can be inaccurate for (IA)^3.")
while len(self.merged_adapters) > 0:
active_adapter = self.merged_adapters.pop()
if active_adapter in self.ia3_l.keys():
base_layer = self.get_base_layer()
# divide by (IA)^3 vector. Add tolerace to avoid division by zero
ia3_scaling = self.ia3_l[active_adapter].data
if not self.is_feedforward:
ia3_scaling = ia3_scaling.permute(1, 0, 2, 3)
base_layer.weight.data = torch.div(base_layer.weight.data, ia3_scaling + 1e-8)
if not self.is_feedforward and (base_layer.bias is not None):
scaling = self.ia3_l[active_adapter].reshape(base_layer.bias.shape)
base_layer.bias.data = torch.mul(base_layer.bias.data, scaling.data)
def forward(self, x: torch.Tensor, *args: Any, **kwargs: Any) -> torch.Tensor:
dtype = previous_dtype = x.dtype
if self.disable_adapters:
if self.merged:
self.unmerge()
result = self.base_layer(x, *args, **kwargs)
elif self.merged:
result = self.base_layer(x, *args, **kwargs)
else:
ia3_scaling = 1
for active_adapter in self.active_adapters:
if active_adapter not in self.ia3_l.keys():
continue
dtype = self.ia3_l[active_adapter].dtype
ia3_scaling *= self.ia3_l[active_adapter]
if self.is_feedforward:
x = x.to(dtype)
# TODO: weight.dtype can be != self.ia3_l[self.active_adapters].dtype
# e.g. bf16 vs fp32. Is that okay?
interm = (x * ia3_scaling).to(self.get_base_layer().weight.dtype)
result = self.base_layer(interm, *args, **kwargs)
else:
result = self.base_layer(x, *args, **kwargs)
result = result.to(dtype) * ia3_scaling
result = result.to(previous_dtype)
return result
| peft/src/peft/tuners/ia3/layer.py/0 | {
"file_path": "peft/src/peft/tuners/ia3/layer.py",
"repo_id": "peft",
"token_count": 6417
} | 172 |
# coding=utf-8
# Copyright 2023-present the HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import importlib
import warnings
from typing import Any, Optional
import torch
import torch.nn as nn
import torch.nn.init as init
from peft.tuners.tuners_utils import BaseTunerLayer
from .layer import LoraLayer
class LoraParallelLinear(nn.Module, LoraLayer):
"""
When the target layer parallel_linear is RowParallelLinear, in order to keep the input and output shapes
consistent, we need to split the lora matrix A into rows, and the lora_B at this time should be a complete linear
layer; In the same way, when the target layer is ColumnParallelLinear, we perform column segmentation on lora_B,
while lora_A is still a complete linear layer.
"""
def __init__(
self,
base_layer,
adapter_name: str,
backend,
r: int = 0,
lora_alpha: int = 1,
lora_dropout: float = 0.0,
fan_in_fan_out: bool = False,
init_lora_weights: bool = True,
use_rslora: bool = False,
**kwargs,
):
super().__init__()
LoraLayer.__init__(self, base_layer=base_layer)
self.backend = backend
self.is_paralle_a = isinstance(base_layer, backend.RowParallelLinear)
self.fan_in_fan_out = fan_in_fan_out
self._active_adapter = adapter_name
megatron_config = kwargs["megatron_config"]
parallel_linear_kwargs = {"megatron_config": megatron_config}
init_method = init.xavier_normal_
if hasattr(megatron_config, "init_method"):
init_method = megatron_config.init_method
input_is_parallel = True
gather_output = False
if isinstance(base_layer, self.backend.RowParallelLinear):
input_is_parallel = base_layer.input_is_parallel
else:
gather_output = base_layer.gather_output
self.update_layer(
adapter_name,
r,
lora_alpha,
lora_dropout,
init_lora_weights,
use_rslora,
init_method,
input_is_parallel,
gather_output,
**parallel_linear_kwargs,
)
self.is_target_conv_1d_layer = False
def update_layer(
self,
adapter_name,
r,
lora_alpha,
lora_dropout,
init_lora_weights,
use_rslora,
init_method=init.xavier_normal_,
input_is_parallel=True,
gather_output=False,
**parallel_linear_kwargs,
):
if r <= 0:
raise ValueError(f"`r` should be a positive integer value but the value passed is {r}")
self.r[adapter_name] = r
self.lora_alpha[adapter_name] = lora_alpha
if lora_dropout > 0.0:
lora_dropout_layer = nn.Dropout(p=lora_dropout)
else:
lora_dropout_layer = nn.Identity()
self.lora_dropout[adapter_name] = lora_dropout_layer
megatron_config = parallel_linear_kwargs["megatron_config"]
# lora needs to be forced to upgrade to 32-bit precision, otherwise it will overflow
megatron_config.params_dtype = torch.float32
if self.is_paralle_a:
lora_a = self.backend.RowParallelLinear(
input_size=self.in_features,
output_size=r,
bias=False,
input_is_parallel=input_is_parallel,
skip_bias_add=True,
init_method=init_method,
config=megatron_config,
)
lora_b = nn.Linear(in_features=r, out_features=self.out_features, bias=False, dtype=torch.float32)
else:
lora_a = nn.Linear(in_features=self.in_features, out_features=r, bias=False, dtype=torch.float32)
lora_b = self.backend.ColumnParallelLinear(
input_size=r,
output_size=self.out_features,
bias=False,
gather_output=gather_output,
init_method=init_method,
config=megatron_config,
)
self.lora_A[adapter_name] = lora_a
self.lora_B[adapter_name] = lora_b
if use_rslora:
self.scaling[adapter_name] = lora_alpha / (r**0.5)
else:
self.scaling[adapter_name] = lora_alpha / r
if init_lora_weights:
self.reset_lora_parameters(adapter_name, init_lora_weights)
weight = getattr(self.get_base_layer(), "weight", None)
if weight is not None:
# the layer is already completely initialized, this is an update
if weight.dtype.is_floating_point or weight.dtype.is_complex:
self.to(weight.device, dtype=weight.dtype)
else:
self.to(weight.device)
self.set_adapter(self.active_adapters)
def forward(self, x: torch.Tensor, *args: Any, **kwargs: Any):
previous_dtype = x.dtype
# If weight is used for matrix multiplication here, the final aggregation operation of the original
# parallel_linear layer will be missing, so we need to directly call its forward function to obtain the
# output of the original parallel_linear layer.
if self.disable_adapters:
if self.merged:
self.unmerge()
result, bias = self.base_layer(x, *args, **kwargs)
elif self.merged:
result, bias = self.base_layer(x, *args, **kwargs)
else:
result, bias = self.base_layer(x, *args, **kwargs)
for active_adapter in self.active_adapters:
if active_adapter not in self.lora_A.keys():
continue
lora_A = self.lora_A[active_adapter]
lora_B = self.lora_B[active_adapter]
dropout = self.lora_dropout[active_adapter]
scaling = self.scaling[active_adapter]
x = x.to(lora_A.weight.dtype)
lora_result = lora_A(dropout(x))
if isinstance(lora_result, tuple):
lora_result = lora_result[0]
lora_result = lora_B(lora_result)
if isinstance(lora_result, tuple):
lora_result = lora_result[0]
lora_result = lora_result * scaling
result = result + lora_result
result = result.to(previous_dtype)
return result, bias
def dispatch_megatron(
target: torch.nn.Module,
adapter_name: str,
lora_config,
**kwargs: Any,
) -> Optional[torch.nn.Module]:
new_module = None
if isinstance(target, BaseTunerLayer):
target_base_layer = target.get_base_layer()
else:
target_base_layer = target
if lora_config.megatron_config:
megatron_core = importlib.import_module(lora_config.megatron_core)
else:
megatron_core = None
if megatron_core and isinstance(
target_base_layer,
(megatron_core.tensor_parallel.ColumnParallelLinear, megatron_core.tensor_parallel.RowParallelLinear),
):
megatron_kwargs = kwargs.copy()
megatron_config = lora_config.megatron_config
if isinstance(megatron_config, dict):
transformer_config_class = megatron_core.transformer.transformer_config.TransformerConfig
megatron_config = transformer_config_class(**lora_config.megatron_config)
megatron_kwargs["megatron_config"] = megatron_config
if megatron_kwargs["fan_in_fan_out"]:
warnings.warn(
"fan_in_fan_out is set to True but the target module is `ColumnParallelLinear` "
"or `RowParallelLinear`. "
"Setting fan_in_fan_out to False."
)
megatron_kwargs["fan_in_fan_out"] = lora_config.fan_in_fan_out = False
new_module = LoraParallelLinear(
base_layer=target, adapter_name=adapter_name, backend=megatron_core.tensor_parallel, **megatron_kwargs
)
return new_module
| peft/src/peft/tuners/lora/tp_layer.py/0 | {
"file_path": "peft/src/peft/tuners/lora/tp_layer.py",
"repo_id": "peft",
"token_count": 3961
} | 173 |
# coding=utf-8
# Copyright 2023-present the HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
from typing import Any
import torch
import torch.nn as nn
from peft.tuners.tuners_utils import BaseTunerLayer
from .config import PolyConfig
from .router import get_router
class PolyLayer(BaseTunerLayer):
# All names of layers that may contain (trainable) adapter weights
adapter_layer_names = ("poly_lora_A", "poly_lora_B", "poly_router")
# All names of other parameters that may contain adapter-related parameters
other_param_names = ("r", "n_tasks", "n_skills", "n_splits")
def __init__(self, base_layer: nn.Module, **kwargs):
self.base_layer = base_layer
self.r = {}
self.n_tasks = {}
self.n_skills = {}
self.n_splits = {}
self.poly_type = {}
self.poly_router = nn.ModuleDict()
self.poly_lora_A = nn.ParameterDict()
self.poly_lora_B = nn.ParameterDict()
self.kwargs = kwargs
base_layer = self.get_base_layer()
if isinstance(base_layer, nn.Linear):
in_features, out_features = base_layer.in_features, base_layer.out_features
else:
raise ValueError(f"Unsupported layer type {type(base_layer)}")
self.in_features = in_features
self.out_features = out_features
def update_layer(self, adapter_name, poly_config):
if poly_config.r <= 0:
raise ValueError(f"`r` should be a positive integer value but the value passed is {poly_config.r}")
self.r[adapter_name] = poly_config.r
self.n_tasks[adapter_name] = poly_config.n_tasks
self.n_skills[adapter_name] = poly_config.n_skills
self.n_splits[adapter_name] = poly_config.n_splits
self.poly_type[adapter_name] = poly_config.poly_type
self.poly_lora_A[adapter_name] = nn.Parameter(
torch.empty(
poly_config.n_splits,
poly_config.n_skills,
self.in_features // poly_config.n_splits,
poly_config.r,
)
)
self.poly_lora_B[adapter_name] = nn.Parameter(
torch.empty(
poly_config.n_splits,
poly_config.n_skills,
poly_config.r,
self.out_features // poly_config.n_splits,
)
)
self.poly_router[adapter_name] = get_router(poly_config)
self.reset_poly_parameters(adapter_name, init_weights=poly_config.init_weights)
weight = getattr(self.get_base_layer(), "weight", None)
if weight is not None:
# the layer is already completely initialized, this is an update
if weight.dtype.is_floating_point or weight.dtype.is_complex:
self.to(weight.device, dtype=weight.dtype)
else:
self.to(weight.device)
self.set_adapter(self.active_adapters)
def reset_poly_parameters(self, adapter_name, init_weights):
if adapter_name in self.poly_lora_A.keys():
# initialize A the same way as the default for nn.Linear
# https://github.com/microsoft/mttl/blob/ce4ca51dbca73be656feb9b3e5233633e3c5dec7/mttl/models/poly.py#L269
n_splits, n_skills, d, r = self.poly_lora_A[adapter_name].shape
for skill in range(n_skills):
for split in range(n_splits):
param = torch.empty((r, d))
torch.nn.init.kaiming_uniform_(param, a=math.sqrt(5))
self.poly_lora_A[adapter_name].data[split, skill, :, :] = param.T
if init_weights:
# initialize B to zero
torch.nn.init.zeros_(self.poly_lora_B[adapter_name])
else:
# initialize B the same way as the default for nn.Linear
n_splits, n_skills, r, d = self.poly_lora_B[adapter_name].shape
for skill in range(n_skills):
for split in range(n_splits):
param = torch.empty((d, r))
torch.nn.init.kaiming_uniform_(param, a=math.sqrt(5))
self.poly_lora_B[adapter_name].data[split, skill, :, :] = param.T
# initialized router
self.poly_router[adapter_name].reset()
class Linear(nn.Module, PolyLayer):
# Lora implemented in a dense layer
def __init__(
self,
base_layer,
adapter_name: str,
poly_config: PolyConfig,
**kwargs,
) -> None:
super().__init__()
PolyLayer.__init__(self, base_layer, **kwargs)
self._active_adapter = adapter_name
self.update_layer(adapter_name, poly_config)
def forward(self, x: torch.Tensor, *args: Any, task_ids: torch.Tensor = None, **kwargs: Any) -> torch.Tensor:
previous_dtype = x.dtype
if self.disable_adapters:
result = self.base_layer(x, *args, **kwargs)
else:
result = self.base_layer(x, *args, **kwargs)
for active_adapter in self.active_adapters:
if active_adapter not in self.poly_lora_A.keys():
continue
r = self.r[active_adapter]
poly_router = self.poly_router[active_adapter]
poly_lora_A = self.poly_lora_A[active_adapter]
poly_lora_B = self.poly_lora_B[active_adapter]
# Combine the output of LoRAs
# https://github.com/microsoft/mttl/blob/ce4ca51dbca73be656feb9b3e5233633e3c5dec7/mttl/models/poly.py#L293
mixing_weights = poly_router(task_ids=task_ids, input_ids=x)
bs, n_splits, n_skills = mixing_weights.size()
# A is n_splits, n_skills, D // n_splits, rank
# we want bs, n_splits, D // n_splits, rank
A = torch.einsum("bqs,qsdr->bqdr", (mixing_weights, poly_lora_A))
B = torch.einsum("bqs,qsrd->bqrd", (mixing_weights, poly_lora_B))
A = A.reshape(bs, self.in_features, r)
B = B.transpose(1, 2).reshape(bs, r, self.out_features)
x = x.to(A.dtype)
result += x.bmm(A).bmm(B) / r
result = result.to(previous_dtype)
return result
def __repr__(self) -> str:
rep = super().__repr__()
return "poly." + rep
| peft/src/peft/tuners/poly/layer.py/0 | {
"file_path": "peft/src/peft/tuners/poly/layer.py",
"repo_id": "peft",
"token_count": 3329
} | 174 |
import os
if os.environ.get("PEFT_DEBUG_WITH_TORCH_COMPILE") == "1":
# This is a hack purely for debugging purposes. If the environment variable PEFT_DEBUG_WITH_TORCH_COMPILE is set to
# 1, get_peft_model() will return a compiled model. This way, all unit tests that use peft.get_peft_model() will
# use a compiled model. See .github/workflows/torch_compile_tests.yml.
import torch
import peft
from peft.mapping import get_peft_model as get_peft_model_original
def get_peft_model_new(*args, **kwargs):
"""Make get_peft_model() return a compiled model."""
peft_model = get_peft_model_original(*args, **kwargs)
peft_model = torch.compile(peft_model)
return peft_model
peft.get_peft_model = get_peft_model_new
| peft/tests/__init__.py/0 | {
"file_path": "peft/tests/__init__.py",
"repo_id": "peft",
"token_count": 302
} | 175 |
# coding=utf-8
# Copyright 2023-present the HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import copy
import itertools
import os
import re
import tempfile
import unittest
import torch
from parameterized import parameterized
from torch import nn
from transformers import AutoModelForCausalLM
from peft import (
AdaLoraConfig,
LoHaConfig,
LoKrConfig,
LoraConfig,
OFTConfig,
PeftMixedModel,
PrefixTuningConfig,
get_peft_model,
)
from peft.tuners.tuners_utils import BaseTunerLayer
from peft.utils import infer_device
class SimpleNet(nn.Module):
def __init__(self, bias=True):
super().__init__()
# note: out_features must be > rank or else OFT will be an identity transform
self.lin0 = nn.Linear(10, 20, bias=bias)
self.relu = nn.ReLU()
self.lin1 = nn.Linear(20, 16, bias=bias)
def forward(self, X):
X = X.float()
X = self.lin0(X)
X = self.relu(X)
X = self.lin1(X)
return X
def _param_name_func(testcase_func, param_num, params):
# for parameterized tests in TextMixedAdapterTypes
config0, config1 = params[0]
name0 = config0.__class__.__name__[: -len("Config")]
name1 = config1.__class__.__name__[: -len("Config")]
if name0 != name1:
return f"{testcase_func.__name__}_{param_num}_{name0}_{name1}"
return f"{testcase_func.__name__}_{param_num}_{name0}_x2"
class TestMixedAdapterTypes(unittest.TestCase):
torch_device = infer_device()
def _get_model(self, model_cls, peft_config=None, adapter_name=None, seed=0, mixed=True):
torch.manual_seed(0) # always use seed 0 for base model, seed for adapters may differ
base_model = model_cls().eval().to(self.torch_device)
if peft_config is None:
return base_model
torch.manual_seed(seed)
assert adapter_name is not None
peft_model = get_peft_model(base_model, peft_config, adapter_name=adapter_name, mixed=mixed)
return peft_model.eval().to(self.torch_device)
def _check_mixed_outputs(self, model_cls, config0, config1, input, *, is_commutative):
# This test checks different combinations of adapter0, adapter1, or combinations of the two, and whether
# outputs are the same/different, depending on context. If we pass is_commutative=True, it means that the order
# of adapters does not matter, and we expect the same output regardless of the order in which adapters are
# applied.
# We have to very careful with resetting the random seed each time it is used, otherwise the adapters may be
# initialized with different values, and the test will fail.
atol = 1e-5
rtol = 1e-5
seed0 = 0
seed1 = 1
# base model
base_model = self._get_model(model_cls)
output_base = base_model(input)
self.assertTrue(torch.isfinite(output_base).all())
# adapter 0
peft_model_0 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
output_config0 = peft_model_0(input)
self.assertTrue(torch.isfinite(output_config0).all())
self.assertFalse(torch.allclose(output_base, output_config0, atol=atol, rtol=rtol))
# adapter 1
peft_model_1 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
output_config1 = peft_model_1(input)
self.assertTrue(torch.isfinite(output_config1).all())
self.assertFalse(torch.allclose(output_base, output_config1, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_config0, output_config1, atol=atol, rtol=rtol))
# adapter 0 + 1
peft_model_01 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
torch.manual_seed(seed1)
peft_model_01.add_adapter("adapter1", config1)
peft_model_01.set_adapter(["adapter0", "adapter1"])
output_mixed_01 = peft_model_01(input)
# check the number of tuner layer types
tuner_layers = [mod for mod in peft_model_01.modules() if isinstance(mod, BaseTunerLayer)]
tuner_types = {type(tuner_layer) for tuner_layer in tuner_layers}
if type(config0) == type(config1):
self.assertEqual(len(tuner_types), 1)
else:
self.assertEqual(len(tuner_types), 2)
self.assertEqual(peft_model_01.active_adapters, ["adapter0", "adapter1"])
self.assertTrue(torch.isfinite(output_mixed_01).all())
self.assertFalse(torch.allclose(output_config0, output_mixed_01, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_config1, output_mixed_01, atol=atol, rtol=rtol))
if is_commutative:
delta0 = output_config0 - output_base
delta1 = output_config1 - output_base
delta_mixed_01 = output_mixed_01 - output_base
self.assertTrue(torch.allclose(delta0 + delta1, delta_mixed_01, atol=atol, rtol=rtol))
# adapter 1 + 0
peft_model_10 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
torch.manual_seed(seed0)
peft_model_10.add_adapter("adapter0", config0)
peft_model_10.set_adapter(["adapter1", "adapter0"])
output_mixed_10 = peft_model_10(input)
# check the number of tuner layer types
tuner_layers = [mod for mod in peft_model_10.modules() if isinstance(mod, BaseTunerLayer)]
tuner_types = {type(tuner_layer) for tuner_layer in tuner_layers}
if type(config0) == type(config1):
self.assertEqual(len(tuner_types), 1)
else:
self.assertEqual(len(tuner_types), 2)
self.assertEqual(peft_model_10.active_adapters, ["adapter1", "adapter0"])
self.assertTrue(torch.isfinite(output_mixed_10).all())
self.assertFalse(torch.allclose(output_config0, output_mixed_10, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_config1, output_mixed_10, atol=atol, rtol=rtol))
if is_commutative:
self.assertTrue(torch.allclose(output_mixed_01, output_mixed_10, atol=atol, rtol=rtol))
# turn around the order of the adapters of the 0 + 1 mixed model, should behave like the 0 + 1 mixed model
peft_model_10.set_adapter(["adapter0", "adapter1"])
output_mixed_reversed = peft_model_10(input)
# check the number of tuner layer types
tuner_layers = [mod for mod in peft_model_10.modules() if isinstance(mod, BaseTunerLayer)]
tuner_types = {type(tuner_layer) for tuner_layer in tuner_layers}
if type(config0) == type(config1):
self.assertEqual(len(tuner_types), 1)
else:
self.assertEqual(len(tuner_types), 2)
self.assertEqual(peft_model_10.active_adapters, ["adapter0", "adapter1"])
self.assertTrue(torch.isfinite(output_mixed_reversed).all())
self.assertFalse(torch.allclose(output_mixed_reversed, output_config0, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_mixed_reversed, output_config1, atol=atol, rtol=rtol))
if is_commutative:
self.assertTrue(torch.allclose(output_mixed_reversed, output_mixed_01, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_mixed_reversed, output_mixed_10, atol=atol, rtol=rtol))
def _check_merging(self, model_cls, config0, config1, input):
# Ensure that when merging mixed adapters, the result is the same as when applying the adapters separately.
# Merging requires a bit higher tolerance for some adapters, which can also vary depending on CPU vs GPU.
atol = 1e-4
rtol = 1e-4
seed0 = 0
seed1 = 1
# adapter 0 + 1
peft_model_01 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
torch.manual_seed(seed1)
peft_model_01.add_adapter("adapter1", config1)
peft_model_01.set_adapter(["adapter0", "adapter1"])
output_mixed_01 = peft_model_01(input)
model_merged_01 = peft_model_01.merge_and_unload()
output_merged_01 = model_merged_01(input)
self.assertTrue(torch.allclose(output_mixed_01, output_merged_01, atol=atol, rtol=rtol))
# adapter 1 + 0
peft_model_10 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
torch.manual_seed(seed0)
peft_model_10.add_adapter("adapter0", config0)
peft_model_10.set_adapter(["adapter1", "adapter0"])
output_mixed_10 = peft_model_10(input)
model_merged_10 = peft_model_10.merge_and_unload()
output_merged_10 = model_merged_10(input)
self.assertTrue(torch.allclose(output_mixed_10, output_merged_10, atol=atol, rtol=rtol))
def _check_unload(self, model_cls, config0, config1, input):
# Ensure that we can unload the base model without merging
atol = 1e-5
rtol = 1e-5
seed0 = 0
seed1 = 1
base_model = self._get_model(model_cls)
output_base = base_model(input)
# adapter 0 + 1
peft_model_01 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
torch.manual_seed(seed1)
peft_model_01.add_adapter("adapter1", config1)
peft_model_01.set_adapter(["adapter0", "adapter1"])
output_mixed = peft_model_01(input)
# unload
model_unloaded = peft_model_01.unload()
output_unloaded = model_unloaded(input)
self.assertFalse(torch.allclose(output_mixed, output_unloaded, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_base, output_unloaded, atol=atol, rtol=rtol))
def _check_disable(self, model_cls, config0, config1, input):
# Ensure that we can disable adapters
atol = 1e-5
rtol = 1e-5
seed0 = 0
seed1 = 1
# base model
base_model = self._get_model(model_cls)
output_base = base_model(input)
# adapter 0
peft_model_0 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
output_config0 = peft_model_0(input)
with peft_model_0.disable_adapter():
output_disabled0 = peft_model_0(input)
self.assertFalse(torch.allclose(output_base, output_config0, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_base, output_disabled0, atol=atol, rtol=rtol))
# adapter 1
peft_model_1 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
output_config1 = peft_model_1(input)
with peft_model_1.disable_adapter():
output_disabled1 = peft_model_1(input)
self.assertFalse(torch.allclose(output_base, output_config1, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_base, output_disabled1, atol=atol, rtol=rtol))
# adapter 0 + 1
peft_model_01 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
torch.manual_seed(seed1)
peft_model_01.add_adapter("adapter1", config1)
peft_model_01.set_adapter(["adapter0", "adapter1"])
output_mixed_01 = peft_model_01(input)
with peft_model_01.disable_adapter():
output_disabled01 = peft_model_01(input)
self.assertFalse(torch.allclose(output_base, output_mixed_01, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_base, output_disabled01, atol=atol, rtol=rtol))
# adapter 1 + 0
peft_model_10 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
torch.manual_seed(seed0)
peft_model_10.add_adapter("adapter0", config0)
peft_model_10.set_adapter(["adapter1", "adapter0"])
output_mixed_10 = peft_model_10(input)
with peft_model_10.disable_adapter():
output_disabled10 = peft_model_10(input)
self.assertFalse(torch.allclose(output_base, output_mixed_10, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_base, output_disabled10, atol=atol, rtol=rtol))
def _check_loading(self, model_cls, config0, config1, input, *, is_commutative):
# Check that we can load two adapters into the same model
# Note that we save the adapters using a normal PeftModel because PeftMixModel doesn't support saving yet
atol = 1e-5
rtol = 1e-5
seed0 = 0
seed1 = 1
with tempfile.TemporaryDirectory() as tmp_dirname:
# SAVING
# adapter 0: note that we set mixed=False because mixed models don't support saving (yet)
peft_model_0 = self._get_model(model_cls, config0, "adapter0", seed=seed0, mixed=False)
output_config0 = peft_model_0(input)
peft_model_0.save_pretrained(os.path.join(tmp_dirname, "adapter0"))
# adapter 1: note that we set mixed=False because mixed models don't support saving (yet)
peft_model_1 = self._get_model(model_cls, config1, "adapter1", seed=seed1, mixed=False)
output_config1 = peft_model_1(input)
peft_model_1.save_pretrained(os.path.join(tmp_dirname, "adapter1"))
# adapter 0 + 1
peft_model_01 = self._get_model(model_cls, config0, "adapter0", seed=seed0)
torch.manual_seed(seed1)
peft_model_01.add_adapter("adapter1", config1)
peft_model_01.set_adapter(["adapter0", "adapter1"])
output_mixed_01 = peft_model_01(input)
# adapter 1 + 0
peft_model_10 = self._get_model(model_cls, config1, "adapter1", seed=seed1)
torch.manual_seed(seed0)
peft_model_10.add_adapter("adapter0", config0)
peft_model_10.set_adapter(["adapter1", "adapter0"])
output_mixed_10 = peft_model_10(input)
# LOADING
# adapter 0
base_model = self._get_model(model_cls)
# Notes:
# Path is tmp_dirname/adapter0/adapter0 because non-default adapters are saved in a subfolder.
# As a sanity check, we should set a completely different seed here. That way, we ensure that the the
# weights are not just randomly initialized exactly to the same values as before.
torch.manual_seed(123456)
peft_model_loaded0 = PeftMixedModel.from_pretrained(
base_model, os.path.join(tmp_dirname, "adapter0", "adapter0"), "adapter0"
)
output_loaded0 = peft_model_loaded0(input)
self.assertTrue(torch.allclose(output_config0, output_loaded0, atol=atol, rtol=rtol))
# adapter 1
base_model = self._get_model(model_cls)
torch.manual_seed(654321) # setting a completely different seed here should not affect the result
peft_model_loaded1 = PeftMixedModel.from_pretrained(
base_model, os.path.join(tmp_dirname, "adapter1", "adapter1"), "adapter1"
)
output_loaded1 = peft_model_loaded1(input)
self.assertTrue(torch.allclose(output_config1, output_loaded1, atol=atol, rtol=rtol))
# adapter 0 + 1
base_model = self._get_model(model_cls)
torch.manual_seed(97531) # setting a completely different seed here should not affect the result
peft_model_loaded_01 = PeftMixedModel.from_pretrained(
base_model, os.path.join(tmp_dirname, "adapter0", "adapter0"), "adapter0"
)
peft_model_loaded_01.load_adapter(os.path.join(tmp_dirname, "adapter1", "adapter1"), "adapter1")
# at this point, "adapter0" should still be active
self.assertEqual(peft_model_loaded_01.active_adapters, ["adapter0"])
output_loaded01_0 = peft_model_loaded_01(input)
self.assertTrue(torch.allclose(output_config0, output_loaded01_0, atol=atol, rtol=rtol))
# activate adapter1
peft_model_loaded_01.set_adapter(["adapter1"])
self.assertEqual(peft_model_loaded_01.active_adapters, ["adapter1"])
output_loaded01_1 = peft_model_loaded_01(input)
self.assertTrue(torch.allclose(output_config1, output_loaded01_1, atol=atol, rtol=rtol))
# activate both adapters
peft_model_loaded_01.set_adapter(["adapter0", "adapter1"])
output_loaded01 = peft_model_loaded_01(input)
self.assertTrue(torch.allclose(output_mixed_01, output_loaded01, atol=atol, rtol=rtol))
# adapter 1 + 0
base_model = self._get_model(model_cls)
torch.manual_seed(445566) # setting a completely different seed here should not affect the result
peft_model_loaded_10 = PeftMixedModel.from_pretrained(
base_model, os.path.join(tmp_dirname, "adapter1", "adapter1"), "adapter1"
)
peft_model_loaded_10.load_adapter(os.path.join(tmp_dirname, "adapter0", "adapter0"), "adapter0")
# at this point, "adapter1" should still be active
self.assertEqual(peft_model_loaded_10.active_adapters, ["adapter1"])
output_loaded10_1 = peft_model_loaded_10(input)
self.assertTrue(torch.allclose(output_config1, output_loaded10_1, atol=atol, rtol=rtol))
# activate adapter1
peft_model_loaded_10.set_adapter(["adapter0"])
self.assertEqual(peft_model_loaded_10.active_adapters, ["adapter0"])
output_loaded10_0 = peft_model_loaded_10(input)
self.assertTrue(torch.allclose(output_config0, output_loaded10_0, atol=atol, rtol=rtol))
# activate both adapters
peft_model_loaded_10.set_adapter(["adapter1", "adapter0"])
output_loaded10 = peft_model_loaded_10(input)
self.assertTrue(torch.allclose(output_mixed_10, output_loaded10, atol=atol, rtol=rtol))
if is_commutative:
self.assertTrue(torch.allclose(output_loaded01, output_loaded10, atol=atol, rtol=rtol))
self.assertTrue(torch.allclose(output_loaded10, output_mixed_01, atol=atol, rtol=rtol))
@parameterized.expand(
itertools.combinations(
[
LoraConfig(target_modules=["lin0"], init_lora_weights=False),
LoHaConfig(target_modules=["lin0"], init_weights=False),
LoKrConfig(target_modules=["lin0"], init_weights=False),
AdaLoraConfig(target_modules=["lin0"], init_lora_weights=False),
OFTConfig(target_modules=["lin0"], init_weights=False),
],
r=2,
),
name_func=_param_name_func,
)
def test_target_first_layer(self, config0, config1):
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
self._check_mixed_outputs(SimpleNet, config0, config1, input, is_commutative=False)
self._check_merging(SimpleNet, config0, config1, input)
self._check_unload(SimpleNet, config0, config1, input)
self._check_disable(SimpleNet, config1, config0, input)
self._check_loading(SimpleNet, config0, config1, input, is_commutative=False)
@parameterized.expand(
itertools.combinations(
[
LoraConfig(target_modules=["lin1"], init_lora_weights=False),
LoHaConfig(target_modules=["lin1"], init_weights=False),
LoKrConfig(target_modules=["lin1"], init_weights=False),
AdaLoraConfig(target_modules=["lin1"], init_lora_weights=False),
OFTConfig(target_modules=["lin1"], init_weights=False),
],
r=2,
),
name_func=_param_name_func,
)
def test_target_last_layer(self, config0, config1):
# We are targeting the last layer of the SimpleNet. Therefore, since the adapters only add their activations
# to the output, the results should be commutative. This would *not* work if the adapters do something more
# complex or if we target an earlier layer, because of the non-linearity would destroy the commutativity.
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
# OFT is not commutative, as it's not a linear operation on the inputs
is_commutative = not any(isinstance(config, OFTConfig) for config in [config0, config1])
self._check_mixed_outputs(SimpleNet, config0, config1, input, is_commutative=is_commutative)
self._check_merging(SimpleNet, config0, config1, input)
self._check_unload(SimpleNet, config0, config1, input)
self._check_disable(SimpleNet, config1, config0, input)
self._check_loading(SimpleNet, config0, config1, input, is_commutative=is_commutative)
@parameterized.expand(
itertools.combinations(
[
LoraConfig(init_lora_weights=False),
LoHaConfig(init_weights=False),
LoKrConfig(init_weights=False),
AdaLoraConfig(init_lora_weights=False),
OFTConfig(init_weights=False),
],
r=2,
),
name_func=_param_name_func,
)
def test_target_different_layers(self, config0, config1):
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
config0.target_modules = ["lin0"]
config1.target_modules = ["lin1"]
self._check_mixed_outputs(SimpleNet, config0, config1, input, is_commutative=False)
self._check_merging(SimpleNet, config0, config1, input)
self._check_unload(SimpleNet, config0, config1, input)
self._check_disable(SimpleNet, config0, config1, input)
self._check_loading(SimpleNet, config0, config1, input, is_commutative=False)
# same, but switch target_modules around
config0.target_modules = ["lin1"]
config1.target_modules = ["lin0"]
self._check_mixed_outputs(SimpleNet, config1, config0, input, is_commutative=False)
self._check_merging(SimpleNet, config1, config0, input)
self._check_unload(SimpleNet, config1, config0, input)
self._check_disable(SimpleNet, config1, config0, input)
self._check_loading(SimpleNet, config1, config0, input, is_commutative=False)
@parameterized.expand(
[
(
LoraConfig(target_modules=["lin1"], init_lora_weights=False),
LoraConfig(target_modules=["lin1"], init_lora_weights=False),
),
(
LoHaConfig(target_modules=["lin1"], init_weights=False),
LoHaConfig(target_modules=["lin1"], init_weights=False),
),
(
LoKrConfig(target_modules=["lin1"], init_weights=False),
LoKrConfig(target_modules=["lin1"], init_weights=False),
),
(
AdaLoraConfig(target_modules=["lin1"], init_lora_weights=False),
AdaLoraConfig(target_modules=["lin1"], init_lora_weights=False),
),
(
OFTConfig(target_modules=["lin1"], init_weights=False),
OFTConfig(target_modules=["lin1"], init_weights=False),
),
],
name_func=_param_name_func,
)
def test_target_last_layer_same_type(self, config0, config1):
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
# OFT is not commutative, as it's not a linear operation on the inputs
is_commutative = not any(isinstance(config, OFTConfig) for config in [config0, config1])
self._check_mixed_outputs(SimpleNet, config0, config1, input, is_commutative=is_commutative)
self._check_merging(SimpleNet, config0, config1, input)
self._check_unload(SimpleNet, config0, config1, input)
self._check_disable(SimpleNet, config1, config0, input)
@parameterized.expand(
[
(
LoraConfig(target_modules=["lin0"], init_lora_weights=False),
LoraConfig(target_modules=["lin0"], init_lora_weights=False),
),
(
LoHaConfig(target_modules=["lin0"], init_weights=False),
LoHaConfig(target_modules=["lin0"], init_weights=False),
),
(
LoKrConfig(target_modules=["lin0"], init_weights=False),
LoKrConfig(target_modules=["lin0"], init_weights=False),
),
(
AdaLoraConfig(target_modules=["lin0"], init_lora_weights=False),
AdaLoraConfig(target_modules=["lin0"], init_lora_weights=False),
),
(
OFTConfig(target_modules=["lin0"], init_weights=False),
OFTConfig(target_modules=["lin0"], init_weights=False),
),
],
name_func=_param_name_func,
)
def test_target_first_layer_same_type(self, config0, config1):
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
self._check_mixed_outputs(SimpleNet, config0, config1, input, is_commutative=False)
self._check_merging(SimpleNet, config0, config1, input)
self._check_unload(SimpleNet, config0, config1, input)
self._check_disable(SimpleNet, config1, config0, input)
self._check_loading(SimpleNet, config0, config1, input, is_commutative=False)
def test_deeply_nested(self):
# a somewhat absurdly nested model using different adapter types
atol = 1e-5
rtol = 1e-5
torch.manual_seed(0)
model = SimpleNet().eval().to(self.torch_device)
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
output_base = model(input)
config0 = LoraConfig(r=4, lora_alpha=4, target_modules=["lin0", "lin1"], init_lora_weights=False)
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
config1 = LoHaConfig(r=4, alpha=4, target_modules=["lin0"], init_weights=False)
peft_model.add_adapter("adapter1", config1)
config2 = AdaLoraConfig(r=4, lora_alpha=4, target_modules=["lin1"], init_lora_weights=False)
peft_model.add_adapter("adapter2", config2)
config3 = LoKrConfig(r=4, alpha=4, target_modules=["lin0", "lin1"], init_weights=False)
peft_model.add_adapter("adapter3", config3)
config4 = OFTConfig(r=8, target_modules=["lin0", "lin1"], init_weights=False)
peft_model.add_adapter("adapter4", config4)
peft_model.set_adapter(["adapter0", "adapter1", "adapter2", "adapter3", "adapter4"])
output_mixed = peft_model(input)
self.assertTrue(torch.isfinite(output_base).all())
self.assertFalse(torch.allclose(output_base, output_mixed, atol=atol, rtol=rtol))
# test disabling all adapters
with peft_model.disable_adapter():
output_disabled = peft_model(input)
self.assertTrue(torch.isfinite(output_disabled).all())
self.assertTrue(torch.allclose(output_base, output_disabled, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_mixed, output_disabled, atol=atol, rtol=rtol))
# merge and unload all adapters
model_copy = copy.deepcopy(peft_model)
model = model_copy.merge_and_unload()
output_merged = model(input)
self.assertTrue(torch.isfinite(output_merged).all())
self.assertTrue(torch.allclose(output_mixed, output_merged, atol=atol, rtol=rtol))
# merge and unload only adapter1 and adapter3
model_copy = copy.deepcopy(peft_model)
model_copy.set_adapter(["adapter1", "adapter3"])
output_13 = model_copy(input)
self.assertTrue(torch.isfinite(output_13).all())
self.assertFalse(torch.allclose(output_mixed, output_13, atol=atol, rtol=rtol))
model_copy.set_adapter(["adapter0", "adapter1", "adapter2", "adapter3", "adapter4"])
model_merged_unloaded = model_copy.merge_and_unload(adapter_names=["adapter1", "adapter3"])
output_merged_13 = model_merged_unloaded(input)
self.assertTrue(torch.isfinite(output_merged_13).all())
self.assertTrue(torch.allclose(output_13, output_merged_13, atol=atol, rtol=rtol))
# test unloading
model_copy = copy.deepcopy(peft_model)
model_unloaded = model_copy.unload()
output_unloaded = model_unloaded(input)
self.assertTrue(torch.isfinite(output_unloaded).all())
self.assertTrue(torch.allclose(output_base, output_unloaded, atol=atol, rtol=rtol))
def test_delete_adapter(self):
atol = 1e-5
rtol = 1e-5
torch.manual_seed(0)
model = SimpleNet().eval().to(self.torch_device)
input = torch.arange(90).reshape(9, 10).to(self.torch_device)
output_base = model(input)
# create adapter0
torch.manual_seed(0)
config0 = LoraConfig(r=4, lora_alpha=4, target_modules=["lin0", "lin1"], init_lora_weights=False)
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
output_0 = peft_model(input)
self.assertFalse(torch.allclose(output_base, output_0, atol=atol, rtol=rtol))
# add adapter1
torch.manual_seed(1)
config1 = LoHaConfig(r=4, alpha=4, target_modules=["lin0"], init_weights=False)
peft_model.add_adapter("adapter1", config1)
peft_model.set_adapter(["adapter0", "adapter1"])
output_01 = peft_model(input)
self.assertFalse(torch.allclose(output_base, output_01, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_0, output_01, atol=atol, rtol=rtol))
# delete adapter1
peft_model.delete_adapter("adapter1")
self.assertEqual(peft_model.active_adapters, ["adapter0"])
output_deleted_1 = peft_model(input)
self.assertTrue(torch.allclose(output_0, output_deleted_1, atol=atol, rtol=rtol))
msg = re.escape("Adapter(s) ['adapter1'] not found, available adapters: ['adapter0']")
with self.assertRaisesRegex(ValueError, expected_regex=msg):
peft_model.set_adapter(["adapter0", "adapter1"])
# re-add adapter1
torch.manual_seed(1)
peft_model.add_adapter("adapter1", config1)
peft_model.set_adapter(["adapter0", "adapter1"])
output_01_readded = peft_model(input)
self.assertFalse(torch.allclose(output_base, output_01_readded, atol=atol, rtol=rtol))
# same as above, but this time delete adapter0 first
torch.manual_seed(0)
model = SimpleNet().eval().to(self.torch_device)
torch.manual_seed(0)
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
torch.manual_seed(1)
peft_model.add_adapter("adapter1", config1)
peft_model.delete_adapter("adapter0")
self.assertEqual(peft_model.active_adapters, ["adapter1"])
output_deleted_0 = peft_model(input)
self.assertFalse(torch.allclose(output_deleted_0, output_base, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output_deleted_0, output_01, atol=atol, rtol=rtol))
msg = re.escape("Adapter(s) ['adapter0'] not found, available adapters: ['adapter1']")
with self.assertRaisesRegex(ValueError, expected_regex=msg):
peft_model.set_adapter(["adapter0", "adapter1"])
peft_model.delete_adapter("adapter1")
self.assertEqual(peft_model.active_adapters, [])
output_deleted_01 = peft_model(input)
self.assertTrue(torch.allclose(output_deleted_01, output_base, atol=atol, rtol=rtol))
def test_modules_to_save(self):
model = SimpleNet().eval().to(self.torch_device)
config0 = LoraConfig(target_modules=["lin0"], modules_to_save=["lin1"])
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
# adding a second adapter with same modules_to_save is not allowed
# TODO: theoretically, we could allow this if it's the same target layer
config1 = LoHaConfig(target_modules=["lin0"], modules_to_save=["lin1"])
peft_model.add_adapter("adapter1", config1)
msg = "Only one adapter can be set at a time for modules_to_save"
with self.assertRaisesRegex(ValueError, expected_regex=msg):
peft_model.set_adapter(["adapter0", "adapter1"])
def test_get_nb_trainable_parameters(self):
model = SimpleNet().eval().to(self.torch_device)
params_base = sum(p.numel() for p in model.parameters())
config0 = LoraConfig(target_modules=["lin0"])
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
trainable_params0, all_param0 = peft_model.get_nb_trainable_parameters()
params_lora = sum(p.numel() for n, p in model.named_parameters() if "adapter0" in n)
self.assertEqual(trainable_params0, params_lora)
self.assertEqual(all_param0, params_base + params_lora)
config1 = LoHaConfig(target_modules=["lin1"])
peft_model.add_adapter("adapter1", config1)
peft_model.set_adapter(["adapter0", "adapter1"])
params_loha = sum(p.numel() for n, p in model.named_parameters() if "adapter1" in n)
trainable_params1, all_param1 = peft_model.get_nb_trainable_parameters()
self.assertEqual(trainable_params1, params_lora + params_loha)
self.assertEqual(all_param1, params_base + params_lora + params_loha)
config2 = AdaLoraConfig(target_modules=["lin0", "lin1"])
peft_model.add_adapter("adapter2", config2)
peft_model.set_adapter(["adapter0", "adapter1", "adapter2"])
params_adalora = sum(p.numel() for n, p in model.named_parameters() if "adapter2" in n)
trainable_params2, all_param2 = peft_model.get_nb_trainable_parameters()
# remove 2 params because we need to exclude "ranknum" for AdaLora trainable params
self.assertEqual(trainable_params2, params_lora + params_loha + params_adalora - 2)
self.assertEqual(all_param2, params_base + params_lora + params_loha + params_adalora)
def test_incompatible_config_raises(self):
model = SimpleNet().eval().to(self.torch_device)
config0 = LoraConfig(target_modules=["lin0"])
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
config1 = PrefixTuningConfig()
msg = "The provided `peft_type` 'PREFIX_TUNING' is not compatible with the `PeftMixedModel`."
with self.assertRaisesRegex(ValueError, expected_regex=msg):
peft_model.add_adapter("adapter1", config1)
def test_decoder_model(self):
# test a somewhat realistic model instead of a toy model
torch.manual_seed(0)
model_id = "hf-internal-testing/tiny-random-OPTForCausalLM"
model = AutoModelForCausalLM.from_pretrained(model_id).eval().to(self.torch_device)
input_ids = torch.tensor([[1, 1, 1], [1, 2, 1]]).to(self.torch_device)
attention_mask = torch.tensor([[1, 1, 1], [1, 0, 1]]).to(self.torch_device)
input_dict = {
"input_ids": input_ids,
"attention_mask": attention_mask,
}
output_base = model.generate(**input_dict)
torch.manual_seed(0)
config0 = LoraConfig(task_type="CAUSAL_LM", init_lora_weights=False)
peft_model = get_peft_model(model, config0, "adapter0", mixed=True)
output0 = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output0).all())
self.assertFalse(torch.allclose(output_base, output0))
torch.manual_seed(1)
config1 = LoHaConfig(task_type="CAUSAL_LM", target_modules=["q_proj", "v_proj"], init_weights=False)
peft_model.add_adapter("adapter1", config1)
peft_model.set_adapter(["adapter0", "adapter1"])
output1 = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output1).all())
self.assertFalse(torch.allclose(output0, output1))
torch.manual_seed(2)
config2 = AdaLoraConfig(task_type="CAUSAL_LM", init_lora_weights=False)
peft_model.add_adapter("adapter2", config2)
peft_model.set_adapter(["adapter0", "adapter1", "adapter2"])
output2 = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output2).all())
self.assertFalse(torch.allclose(output1, output2))
torch.manual_seed(3)
config3 = LoKrConfig(task_type="CAUSAL_LM", target_modules=["q_proj", "v_proj"], init_weights=False)
peft_model.add_adapter("adapter3", config3)
peft_model.set_adapter(["adapter0", "adapter1", "adapter2", "adapter3"])
output3 = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output3).all())
self.assertFalse(torch.allclose(output2, output3))
torch.manual_seed(4)
config4 = OFTConfig(task_type="CAUSAL_LM", target_modules=["q_proj", "v_proj"], init_weights=False)
peft_model.add_adapter("adapter4", config4)
peft_model.set_adapter(["adapter0", "adapter1", "adapter2", "adapter3", "adapter4"])
output4 = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output4).all())
self.assertFalse(torch.allclose(output3, output4))
with peft_model.disable_adapter():
output_disabled = peft_model.generate(**input_dict)
self.assertTrue(torch.isfinite(output_disabled).all())
self.assertTrue(torch.allclose(output_base, output_disabled))
model_unloaded = peft_model.merge_and_unload()
output_unloaded = model_unloaded.generate(**input_dict)
self.assertTrue(torch.isfinite(output_unloaded).all())
self.assertTrue(torch.allclose(output4, output_unloaded))
with tempfile.TemporaryDirectory() as tmp_dir:
# save adapter0 (use normal PeftModel, because PeftMixedModel does not support saving)
torch.manual_seed(0)
model = AutoModelForCausalLM.from_pretrained(model_id).eval().to(self.torch_device)
torch.manual_seed(0)
peft_model = get_peft_model(model, config0, "adapter0")
output0_save = peft_model(**input_dict).logits
self.assertTrue(torch.isfinite(output0_save).all())
peft_model.save_pretrained(tmp_dir)
# save adapter1
torch.manual_seed(0)
model = AutoModelForCausalLM.from_pretrained(model_id).eval().to(self.torch_device)
torch.manual_seed(1)
peft_model = get_peft_model(model, config1, "adapter1")
output1_save = peft_model(**input_dict).logits
self.assertTrue(torch.isfinite(output1_save).all())
peft_model.save_pretrained(tmp_dir)
# load adapter0 and adapter1
model = AutoModelForCausalLM.from_pretrained(model_id).eval().to(self.torch_device)
peft_model = PeftMixedModel.from_pretrained(model, os.path.join(tmp_dir, "adapter0"), "adapter0")
peft_model.load_adapter(os.path.join(tmp_dir, "adapter1"), "adapter1")
peft_model.set_adapter(["adapter0", "adapter1"])
output01_loaded = peft_model(**input_dict).logits
atol, rtol = 1e-3, 1e-3
self.assertTrue(torch.isfinite(output01_loaded).all())
self.assertFalse(torch.allclose(output0_save, output01_loaded, atol=atol, rtol=rtol))
self.assertFalse(torch.allclose(output1_save, output01_loaded, atol=atol, rtol=rtol))
| peft/tests/test_mixed.py/0 | {
"file_path": "peft/tests/test_mixed.py",
"repo_id": "peft",
"token_count": 18062
} | 176 |
#!/usr/bin/env python3
""" Bulk Model Script Runner
Run validation or benchmark script in separate process for each model
Benchmark all 'vit*' models:
python bulk_runner.py --model-list 'vit*' --results-file vit_bench.csv benchmark.py --amp -b 512
Validate all models:
python bulk_runner.py --model-list all --results-file val.csv --pretrained validate.py /imagenet/validation/ --amp -b 512 --retry
Hacked together by Ross Wightman (https://github.com/rwightman)
"""
import argparse
import os
import sys
import csv
import json
import subprocess
import time
from typing import Callable, List, Tuple, Union
from timm.models import is_model, list_models, get_pretrained_cfg
parser = argparse.ArgumentParser(description='Per-model process launcher')
# model and results args
parser.add_argument(
'--model-list', metavar='NAME', default='',
help='txt file based list of model names to benchmark')
parser.add_argument(
'--results-file', default='', type=str, metavar='FILENAME',
help='Output csv file for validation results (summary)')
parser.add_argument(
'--sort-key', default='', type=str, metavar='COL',
help='Specify sort key for results csv')
parser.add_argument(
"--pretrained", action='store_true',
help="only run models with pretrained weights")
parser.add_argument(
"--delay",
type=float,
default=0,
help="Interval, in seconds, to delay between model invocations.",
)
parser.add_argument(
"--start_method", type=str, default="spawn", choices=["spawn", "fork", "forkserver"],
help="Multiprocessing start method to use when creating workers.",
)
parser.add_argument(
"--no_python",
help="Skip prepending the script with 'python' - just execute it directly. Useful "
"when the script is not a Python script.",
)
parser.add_argument(
"-m",
"--module",
help="Change each process to interpret the launch script as a Python module, executing "
"with the same behavior as 'python -m'.",
)
# positional
parser.add_argument(
"script", type=str,
help="Full path to the program/script to be launched for each model config.",
)
parser.add_argument("script_args", nargs=argparse.REMAINDER)
def cmd_from_args(args) -> Tuple[Union[Callable, str], List[str]]:
# If ``args`` not passed, defaults to ``sys.argv[:1]``
with_python = not args.no_python
cmd: Union[Callable, str]
cmd_args = []
if with_python:
cmd = os.getenv("PYTHON_EXEC", sys.executable)
cmd_args.append("-u")
if args.module:
cmd_args.append("-m")
cmd_args.append(args.script)
else:
if args.module:
raise ValueError(
"Don't use both the '--no_python' flag"
" and the '--module' flag at the same time."
)
cmd = args.script
cmd_args.extend(args.script_args)
return cmd, cmd_args
def main():
args = parser.parse_args()
cmd, cmd_args = cmd_from_args(args)
model_cfgs = []
if args.model_list == 'all':
model_names = list_models(
pretrained=args.pretrained, # only include models w/ pretrained checkpoints if set
)
model_cfgs = [(n, None) for n in model_names]
elif args.model_list == 'all_in1k':
model_names = list_models(pretrained=True)
model_cfgs = []
for n in model_names:
pt_cfg = get_pretrained_cfg(n)
if getattr(pt_cfg, 'num_classes', 0) == 1000:
print(n, pt_cfg.num_classes)
model_cfgs.append((n, None))
elif args.model_list == 'all_res':
model_names = list_models()
model_names += list_models(pretrained=True)
model_cfgs = set()
for n in model_names:
pt_cfg = get_pretrained_cfg(n)
if pt_cfg is None:
print(f'Model {n} is missing pretrained cfg, skipping.')
continue
n = n.split('.')[0]
model_cfgs.add((n, pt_cfg.input_size[-1]))
if pt_cfg.test_input_size is not None:
model_cfgs.add((n, pt_cfg.test_input_size[-1]))
model_cfgs = [(n, {'img-size': r}) for n, r in sorted(model_cfgs)]
elif not is_model(args.model_list):
# model name doesn't exist, try as wildcard filter
model_names = list_models(args.model_list)
model_cfgs = [(n, None) for n in model_names]
if not model_cfgs and os.path.exists(args.model_list):
with open(args.model_list) as f:
model_names = [line.rstrip() for line in f]
model_cfgs = [(n, None) for n in model_names]
if len(model_cfgs):
results_file = args.results_file or './results.csv'
results = []
errors = []
model_strings = '\n'.join([f'{x[0]}, {x[1]}' for x in model_cfgs])
print(f"Running script on these models:\n {model_strings}")
if not args.sort_key:
if 'benchmark' in args.script:
if any(['train' in a for a in args.script_args]):
sort_key = 'train_samples_per_sec'
else:
sort_key = 'infer_samples_per_sec'
else:
sort_key = 'top1'
else:
sort_key = args.sort_key
print(f'Script: {args.script}, Args: {args.script_args}, Sort key: {sort_key}')
try:
for m, ax in model_cfgs:
if not m:
continue
args_str = (cmd, *[str(e) for e in cmd_args], '--model', m)
if ax is not None:
extra_args = [(f'--{k}', str(v)) for k, v in ax.items()]
extra_args = [i for t in extra_args for i in t]
args_str += tuple(extra_args)
try:
o = subprocess.check_output(args=args_str).decode('utf-8').split('--result')[-1]
r = json.loads(o)
results.append(r)
except Exception as e:
# FIXME batch_size retry loop is currently done in either validation.py or benchmark.py
# for further robustness (but more overhead), we may want to manage that by looping here...
errors.append(dict(model=m, error=str(e)))
if args.delay:
time.sleep(args.delay)
except KeyboardInterrupt as e:
pass
errors.extend(list(filter(lambda x: 'error' in x, results)))
if errors:
print(f'{len(errors)} models had errors during run.')
for e in errors:
if 'model' in e:
print(f"\t {e['model']} ({e.get('error', 'Unknown')})")
else:
print(e)
results = list(filter(lambda x: 'error' not in x, results))
no_sortkey = list(filter(lambda x: sort_key not in x, results))
if no_sortkey:
print(f'{len(no_sortkey)} results missing sort key, skipping sort.')
else:
results = sorted(results, key=lambda x: x[sort_key], reverse=True)
if len(results):
print(f'{len(results)} models run successfully. Saving results to {results_file}.')
write_results(results_file, results)
def write_results(results_file, results):
with open(results_file, mode='w') as cf:
dw = csv.DictWriter(cf, fieldnames=results[0].keys())
dw.writeheader()
for r in results:
dw.writerow(r)
cf.flush()
if __name__ == '__main__':
main()
| pytorch-image-models/bulk_runner.py/0 | {
"file_path": "pytorch-image-models/bulk_runner.py",
"repo_id": "pytorch-image-models",
"token_count": 3409
} | 177 |
# Big Transfer (BiT)
**Big Transfer (BiT)** is a type of pretraining recipe that pre-trains on a large supervised source dataset, and fine-tunes the weights on the target task. Models are trained on the JFT-300M dataset. The finetuned models contained in this collection are finetuned on ImageNet.
{% include 'code_snippets.md' %}
## How do I train this model?
You can follow the [timm recipe scripts](https://rwightman.github.io/pytorch-image-models/scripts/) for training a new model afresh.
## Citation
```BibTeX
@misc{kolesnikov2020big,
title={Big Transfer (BiT): General Visual Representation Learning},
author={Alexander Kolesnikov and Lucas Beyer and Xiaohua Zhai and Joan Puigcerver and Jessica Yung and Sylvain Gelly and Neil Houlsby},
year={2020},
eprint={1912.11370},
archivePrefix={arXiv},
primaryClass={cs.CV}
}
```
<!--
Type: model-index
Collections:
- Name: Big Transfer
Paper:
Title: 'Big Transfer (BiT): General Visual Representation Learning'
URL: https://paperswithcode.com/paper/large-scale-learning-of-general-visual
Models:
- Name: resnetv2_101x1_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 5330896
Parameters: 44540000
File Size: 178256468
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPUv3-512
ID: resnetv2_101x1_bitm
LR: 0.03
Epochs: 90
Layers: 101
Crop Pct: '1.0'
Momentum: 0.9
Batch Size: 4096
Image Size: '480'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L444
Weights: https://storage.googleapis.com/bit_models/BiT-M-R101x1-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 82.21%
Top 5 Accuracy: 96.47%
- Name: resnetv2_101x3_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 15988688
Parameters: 387930000
File Size: 1551830100
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPUv3-512
ID: resnetv2_101x3_bitm
LR: 0.03
Epochs: 90
Layers: 101
Crop Pct: '1.0'
Momentum: 0.9
Batch Size: 4096
Image Size: '480'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L451
Weights: https://storage.googleapis.com/bit_models/BiT-M-R101x3-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 84.38%
Top 5 Accuracy: 97.37%
- Name: resnetv2_152x2_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 10659792
Parameters: 236340000
File Size: 945476668
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
ID: resnetv2_152x2_bitm
Crop Pct: '1.0'
Image Size: '480'
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L458
Weights: https://storage.googleapis.com/bit_models/BiT-M-R152x2-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 84.4%
Top 5 Accuracy: 97.43%
- Name: resnetv2_152x4_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 21317584
Parameters: 936530000
File Size: 3746270104
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPUv3-512
ID: resnetv2_152x4_bitm
Crop Pct: '1.0'
Image Size: '480'
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L465
Weights: https://storage.googleapis.com/bit_models/BiT-M-R152x4-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 84.95%
Top 5 Accuracy: 97.45%
- Name: resnetv2_50x1_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 5330896
Parameters: 25550000
File Size: 102242668
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPUv3-512
ID: resnetv2_50x1_bitm
LR: 0.03
Epochs: 90
Layers: 50
Crop Pct: '1.0'
Momentum: 0.9
Batch Size: 4096
Image Size: '480'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L430
Weights: https://storage.googleapis.com/bit_models/BiT-M-R50x1-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 80.19%
Top 5 Accuracy: 95.63%
- Name: resnetv2_50x3_bitm
In Collection: Big Transfer
Metadata:
FLOPs: 15988688
Parameters: 217320000
File Size: 869321580
Architecture:
- 1x1 Convolution
- Bottleneck Residual Block
- Convolution
- Global Average Pooling
- Group Normalization
- Max Pooling
- ReLU
- Residual Block
- Residual Connection
- Softmax
- Weight Standardization
Tasks:
- Image Classification
Training Techniques:
- Mixup
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPUv3-512
ID: resnetv2_50x3_bitm
LR: 0.03
Epochs: 90
Layers: 50
Crop Pct: '1.0'
Momentum: 0.9
Batch Size: 4096
Image Size: '480'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/b9843f954b0457af2db4f9dea41a8538f51f5d78/timm/models/resnetv2.py#L437
Weights: https://storage.googleapis.com/bit_models/BiT-M-R50x3-ILSVRC2012.npz
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 83.75%
Top 5 Accuracy: 97.12%
-->
| pytorch-image-models/docs/models/.templates/models/big-transfer.md/0 | {
"file_path": "pytorch-image-models/docs/models/.templates/models/big-transfer.md",
"repo_id": "pytorch-image-models",
"token_count": 3274
} | 178 |
# (Gluon) SENet
A **SENet** is a convolutional neural network architecture that employs [squeeze-and-excitation blocks](https://paperswithcode.com/method/squeeze-and-excitation-block) to enable the network to perform dynamic channel-wise feature recalibration.
The weights from this model were ported from [Gluon](https://cv.gluon.ai/model_zoo/classification.html).
{% include 'code_snippets.md' %}
## How do I train this model?
You can follow the [timm recipe scripts](https://rwightman.github.io/pytorch-image-models/scripts/) for training a new model afresh.
## Citation
```BibTeX
@misc{hu2019squeezeandexcitation,
title={Squeeze-and-Excitation Networks},
author={Jie Hu and Li Shen and Samuel Albanie and Gang Sun and Enhua Wu},
year={2019},
eprint={1709.01507},
archivePrefix={arXiv},
primaryClass={cs.CV}
}
```
<!--
Type: model-index
Collections:
- Name: Gloun SENet
Paper:
Title: Squeeze-and-Excitation Networks
URL: https://paperswithcode.com/paper/squeeze-and-excitation-networks
Models:
- Name: gluon_senet154
In Collection: Gloun SENet
Metadata:
FLOPs: 26681705136
Parameters: 115090000
File Size: 461546622
Architecture:
- Convolution
- Dense Connections
- Global Average Pooling
- Max Pooling
- Softmax
- Squeeze-and-Excitation Block
Tasks:
- Image Classification
Training Data:
- ImageNet
ID: gluon_senet154
Crop Pct: '0.875'
Image Size: '224'
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/gluon_resnet.py#L239
Weights: https://github.com/rwightman/pytorch-pretrained-gluonresnet/releases/download/v0.1/gluon_senet154-70a1a3c0.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 81.23%
Top 5 Accuracy: 95.35%
-->
| pytorch-image-models/docs/models/.templates/models/gloun-senet.md/0 | {
"file_path": "pytorch-image-models/docs/models/.templates/models/gloun-senet.md",
"repo_id": "pytorch-image-models",
"token_count": 747
} | 179 |
# Noisy Student (EfficientNet)
**Noisy Student Training** is a semi-supervised learning approach. It extends the idea of self-training
and distillation with the use of equal-or-larger student models and noise added to the student during learning. It has three main steps:
1. train a teacher model on labeled images
2. use the teacher to generate pseudo labels on unlabeled images
3. train a student model on the combination of labeled images and pseudo labeled images.
The algorithm is iterated a few times by treating the student as a teacher to relabel the unlabeled data and training a new student.
Noisy Student Training seeks to improve on self-training and distillation in two ways. First, it makes the student larger than, or at least equal to, the teacher so the student can better learn from a larger dataset. Second, it adds noise to the student so the noised student is forced to learn harder from the pseudo labels. To noise the student, it uses input noise such as RandAugment data augmentation, and model noise such as dropout and stochastic depth during training.
{% include 'code_snippets.md' %}
## How do I train this model?
You can follow the [timm recipe scripts](https://rwightman.github.io/pytorch-image-models/scripts/) for training a new model afresh.
## Citation
```BibTeX
@misc{xie2020selftraining,
title={Self-training with Noisy Student improves ImageNet classification},
author={Qizhe Xie and Minh-Thang Luong and Eduard Hovy and Quoc V. Le},
year={2020},
eprint={1911.04252},
archivePrefix={arXiv},
primaryClass={cs.LG}
}
```
<!--
Type: model-index
Collections:
- Name: Noisy Student
Paper:
Title: Self-training with Noisy Student improves ImageNet classification
URL: https://paperswithcode.com/paper/self-training-with-noisy-student-improves
Models:
- Name: tf_efficientnet_b0_ns
In Collection: Noisy Student
Metadata:
FLOPs: 488688572
Parameters: 5290000
File Size: 21386709
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b0_ns
LR: 0.128
Epochs: 700
Dropout: 0.5
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 2048
Image Size: '224'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1427
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b0_ns-c0e6a31c.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 78.66%
Top 5 Accuracy: 94.37%
- Name: tf_efficientnet_b1_ns
In Collection: Noisy Student
Metadata:
FLOPs: 883633200
Parameters: 7790000
File Size: 31516408
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b1_ns
LR: 0.128
Epochs: 700
Dropout: 0.5
Crop Pct: '0.882'
Momentum: 0.9
Batch Size: 2048
Image Size: '240'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1437
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b1_ns-99dd0c41.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 81.39%
Top 5 Accuracy: 95.74%
- Name: tf_efficientnet_b2_ns
In Collection: Noisy Student
Metadata:
FLOPs: 1234321170
Parameters: 9110000
File Size: 36801803
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b2_ns
LR: 0.128
Epochs: 700
Dropout: 0.5
Crop Pct: '0.89'
Momentum: 0.9
Batch Size: 2048
Image Size: '260'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1447
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b2_ns-00306e48.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 82.39%
Top 5 Accuracy: 96.24%
- Name: tf_efficientnet_b3_ns
In Collection: Noisy Student
Metadata:
FLOPs: 2275247568
Parameters: 12230000
File Size: 49385734
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b3_ns
LR: 0.128
Epochs: 700
Dropout: 0.5
Crop Pct: '0.904'
Momentum: 0.9
Batch Size: 2048
Image Size: '300'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1457
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b3_ns-9d44bf68.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 84.04%
Top 5 Accuracy: 96.91%
- Name: tf_efficientnet_b4_ns
In Collection: Noisy Student
Metadata:
FLOPs: 5749638672
Parameters: 19340000
File Size: 77995057
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b4_ns
LR: 0.128
Epochs: 700
Dropout: 0.5
Crop Pct: '0.922'
Momentum: 0.9
Batch Size: 2048
Image Size: '380'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1467
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b4_ns-d6313a46.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 85.15%
Top 5 Accuracy: 97.47%
- Name: tf_efficientnet_b5_ns
In Collection: Noisy Student
Metadata:
FLOPs: 13176501888
Parameters: 30390000
File Size: 122404944
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b5_ns
LR: 0.128
Epochs: 350
Dropout: 0.5
Crop Pct: '0.934'
Momentum: 0.9
Batch Size: 2048
Image Size: '456'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1477
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b5_ns-6f26d0cf.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 86.08%
Top 5 Accuracy: 97.75%
- Name: tf_efficientnet_b6_ns
In Collection: Noisy Student
Metadata:
FLOPs: 24180518488
Parameters: 43040000
File Size: 173239537
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b6_ns
LR: 0.128
Epochs: 350
Dropout: 0.5
Crop Pct: '0.942'
Momentum: 0.9
Batch Size: 2048
Image Size: '528'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1487
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b6_ns-51548356.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 86.45%
Top 5 Accuracy: 97.88%
- Name: tf_efficientnet_b7_ns
In Collection: Noisy Student
Metadata:
FLOPs: 48205304880
Parameters: 66349999
File Size: 266853140
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
ID: tf_efficientnet_b7_ns
LR: 0.128
Epochs: 350
Dropout: 0.5
Crop Pct: '0.949'
Momentum: 0.9
Batch Size: 2048
Image Size: '600'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1498
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_b7_ns-1dbc32de.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 86.83%
Top 5 Accuracy: 98.08%
- Name: tf_efficientnet_l2_ns
In Collection: Noisy Student
Metadata:
FLOPs: 611646113804
Parameters: 480310000
File Size: 1925950424
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- FixRes
- Label Smoothing
- Noisy Student
- RMSProp
- RandAugment
- Weight Decay
Training Data:
- ImageNet
- JFT-300M
Training Resources: Cloud TPU v3 Pod
Training Time: 6 days
ID: tf_efficientnet_l2_ns
LR: 0.128
Epochs: 350
Dropout: 0.5
Crop Pct: '0.96'
Momentum: 0.9
Batch Size: 2048
Image Size: '800'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Stochastic Depth Survival: 0.8
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1520
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_l2_ns-df73bb44.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 88.35%
Top 5 Accuracy: 98.66%
-->
| pytorch-image-models/docs/models/.templates/models/noisy-student.md/0 | {
"file_path": "pytorch-image-models/docs/models/.templates/models/noisy-student.md",
"repo_id": "pytorch-image-models",
"token_count": 5862
} | 180 |
# SPNASNet
**Single-Path NAS** is a novel differentiable NAS method for designing hardware-efficient ConvNets in less than 4 hours.
{% include 'code_snippets.md' %}
## How do I train this model?
You can follow the [timm recipe scripts](https://rwightman.github.io/pytorch-image-models/scripts/) for training a new model afresh.
## Citation
```BibTeX
@misc{stamoulis2019singlepath,
title={Single-Path NAS: Designing Hardware-Efficient ConvNets in less than 4 Hours},
author={Dimitrios Stamoulis and Ruizhou Ding and Di Wang and Dimitrios Lymberopoulos and Bodhi Priyantha and Jie Liu and Diana Marculescu},
year={2019},
eprint={1904.02877},
archivePrefix={arXiv},
primaryClass={cs.LG}
}
```
<!--
Type: model-index
Collections:
- Name: SPNASNet
Paper:
Title: 'Single-Path NAS: Designing Hardware-Efficient ConvNets in less than 4
Hours'
URL: https://paperswithcode.com/paper/single-path-nas-designing-hardware-efficient
Models:
- Name: spnasnet_100
In Collection: SPNASNet
Metadata:
FLOPs: 442385600
Parameters: 4420000
File Size: 17902337
Architecture:
- Average Pooling
- Batch Normalization
- Convolution
- Depthwise Separable Convolution
- Dropout
- ReLU
Tasks:
- Image Classification
Training Data:
- ImageNet
ID: spnasnet_100
Crop Pct: '0.875'
Image Size: '224'
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L995
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/spnasnet_100-048bc3f4.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 74.08%
Top 5 Accuracy: 91.82%
-->
| pytorch-image-models/docs/models/.templates/models/spnasnet.md/0 | {
"file_path": "pytorch-image-models/docs/models/.templates/models/spnasnet.md",
"repo_id": "pytorch-image-models",
"token_count": 699
} | 181 |
# DenseNet
**DenseNet** is a type of convolutional neural network that utilises dense connections between layers, through [Dense Blocks](http://www.paperswithcode.com/method/dense-block), where we connect *all layers* (with matching feature-map sizes) directly with each other. To preserve the feed-forward nature, each layer obtains additional inputs from all preceding layers and passes on its own feature-maps to all subsequent layers.
The **DenseNet Blur** variant in this collection by Ross Wightman employs [Blur Pooling](http://www.paperswithcode.com/method/blur-pooling)
## How do I use this model on an image?
To load a pretrained model:
```py
>>> import timm
>>> model = timm.create_model('densenet121', pretrained=True)
>>> model.eval()
```
To load and preprocess the image:
```py
>>> import urllib
>>> from PIL import Image
>>> from timm.data import resolve_data_config
>>> from timm.data.transforms_factory import create_transform
>>> config = resolve_data_config({}, model=model)
>>> transform = create_transform(**config)
>>> url, filename = ("https://github.com/pytorch/hub/raw/master/images/dog.jpg", "dog.jpg")
>>> urllib.request.urlretrieve(url, filename)
>>> img = Image.open(filename).convert('RGB')
>>> tensor = transform(img).unsqueeze(0) # transform and add batch dimension
```
To get the model predictions:
```py
>>> import torch
>>> with torch.no_grad():
... out = model(tensor)
>>> probabilities = torch.nn.functional.softmax(out[0], dim=0)
>>> print(probabilities.shape)
>>> # prints: torch.Size([1000])
```
To get the top-5 predictions class names:
```py
>>> # Get imagenet class mappings
>>> url, filename = ("https://raw.githubusercontent.com/pytorch/hub/master/imagenet_classes.txt", "imagenet_classes.txt")
>>> urllib.request.urlretrieve(url, filename)
>>> with open("imagenet_classes.txt", "r") as f:
... categories = [s.strip() for s in f.readlines()]
>>> # Print top categories per image
>>> top5_prob, top5_catid = torch.topk(probabilities, 5)
>>> for i in range(top5_prob.size(0)):
... print(categories[top5_catid[i]], top5_prob[i].item())
>>> # prints class names and probabilities like:
>>> # [('Samoyed', 0.6425196528434753), ('Pomeranian', 0.04062102362513542), ('keeshond', 0.03186424449086189), ('white wolf', 0.01739676296710968), ('Eskimo dog', 0.011717947199940681)]
```
Replace the model name with the variant you want to use, e.g. `densenet121`. You can find the IDs in the model summaries at the top of this page.
To extract image features with this model, follow the [timm feature extraction examples](../feature_extraction), just change the name of the model you want to use.
## How do I finetune this model?
You can finetune any of the pre-trained models just by changing the classifier (the last layer).
```py
>>> model = timm.create_model('densenet121', pretrained=True, num_classes=NUM_FINETUNE_CLASSES)
```
To finetune on your own dataset, you have to write a training loop or adapt [timm's training
script](https://github.com/rwightman/pytorch-image-models/blob/master/train.py) to use your dataset.
## How do I train this model?
You can follow the [timm recipe scripts](../scripts) for training a new model afresh.
## Citation
```BibTeX
@article{DBLP:journals/corr/HuangLW16a,
author = {Gao Huang and
Zhuang Liu and
Kilian Q. Weinberger},
title = {Densely Connected Convolutional Networks},
journal = {CoRR},
volume = {abs/1608.06993},
year = {2016},
url = {http://arxiv.org/abs/1608.06993},
archivePrefix = {arXiv},
eprint = {1608.06993},
timestamp = {Mon, 10 Sep 2018 15:49:32 +0200},
biburl = {https://dblp.org/rec/journals/corr/HuangLW16a.bib},
bibsource = {dblp computer science bibliography, https://dblp.org}
}
```
```
@misc{rw2019timm,
author = {Ross Wightman},
title = {PyTorch Image Models},
year = {2019},
publisher = {GitHub},
journal = {GitHub repository},
doi = {10.5281/zenodo.4414861},
howpublished = {\url{https://github.com/rwightman/pytorch-image-models}}
}
```
<!--
Type: model-index
Collections:
- Name: DenseNet
Paper:
Title: Densely Connected Convolutional Networks
URL: https://paperswithcode.com/paper/densely-connected-convolutional-networks
Models:
- Name: densenet121
In Collection: DenseNet
Metadata:
FLOPs: 3641843200
Parameters: 7980000
File Size: 32376726
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Kaiming Initialization
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- ImageNet
ID: densenet121
LR: 0.1
Epochs: 90
Layers: 121
Dropout: 0.2
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L295
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/densenet121_ra-50efcf5c.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 75.56%
Top 5 Accuracy: 92.65%
- Name: densenet161
In Collection: DenseNet
Metadata:
FLOPs: 9931959264
Parameters: 28680000
File Size: 115730790
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Kaiming Initialization
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- ImageNet
ID: densenet161
LR: 0.1
Epochs: 90
Layers: 161
Dropout: 0.2
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L347
Weights: https://download.pytorch.org/models/densenet161-8d451a50.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.36%
Top 5 Accuracy: 93.63%
- Name: densenet169
In Collection: DenseNet
Metadata:
FLOPs: 4316945792
Parameters: 14150000
File Size: 57365526
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Kaiming Initialization
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- ImageNet
ID: densenet169
LR: 0.1
Epochs: 90
Layers: 169
Dropout: 0.2
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L327
Weights: https://download.pytorch.org/models/densenet169-b2777c0a.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 75.9%
Top 5 Accuracy: 93.02%
- Name: densenet201
In Collection: DenseNet
Metadata:
FLOPs: 5514321024
Parameters: 20010000
File Size: 81131730
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Kaiming Initialization
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- ImageNet
ID: densenet201
LR: 0.1
Epochs: 90
Layers: 201
Dropout: 0.2
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L337
Weights: https://download.pytorch.org/models/densenet201-c1103571.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.29%
Top 5 Accuracy: 93.48%
- Name: densenetblur121d
In Collection: DenseNet
Metadata:
FLOPs: 3947812864
Parameters: 8000000
File Size: 32456500
Architecture:
- 1x1 Convolution
- Batch Normalization
- Blur Pooling
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Data:
- ImageNet
ID: densenetblur121d
Crop Pct: '0.875'
Image Size: '224'
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L305
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/densenetblur121d_ra-100dcfbc.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 76.59%
Top 5 Accuracy: 93.2%
- Name: tv_densenet121
In Collection: DenseNet
Metadata:
FLOPs: 3641843200
Parameters: 7980000
File Size: 32342954
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- Convolution
- Dense Block
- Dense Connections
- Dropout
- Max Pooling
- ReLU
- Softmax
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
ID: tv_densenet121
LR: 0.1
Epochs: 90
Crop Pct: '0.875'
LR Gamma: 0.1
Momentum: 0.9
Batch Size: 32
Image Size: '224'
LR Step Size: 30
Weight Decay: 0.0001
Interpolation: bicubic
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/densenet.py#L379
Weights: https://download.pytorch.org/models/densenet121-a639ec97.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 74.74%
Top 5 Accuracy: 92.15%
--> | pytorch-image-models/hfdocs/source/models/densenet.mdx/0 | {
"file_path": "pytorch-image-models/hfdocs/source/models/densenet.mdx",
"repo_id": "pytorch-image-models",
"token_count": 4188
} | 182 |
# Instagram ResNeXt WSL
A **ResNeXt** repeats a [building block](https://paperswithcode.com/method/resnext-block) that aggregates a set of transformations with the same topology. Compared to a [ResNet](https://paperswithcode.com/method/resnet), it exposes a new dimension, *cardinality* (the size of the set of transformations) \\( C \\), as an essential factor in addition to the dimensions of depth and width.
This model was trained on billions of Instagram images using thousands of distinct hashtags as labels exhibit excellent transfer learning performance.
Please note the CC-BY-NC 4.0 license on theses weights, non-commercial use only.
## How do I use this model on an image?
To load a pretrained model:
```py
>>> import timm
>>> model = timm.create_model('ig_resnext101_32x16d', pretrained=True)
>>> model.eval()
```
To load and preprocess the image:
```py
>>> import urllib
>>> from PIL import Image
>>> from timm.data import resolve_data_config
>>> from timm.data.transforms_factory import create_transform
>>> config = resolve_data_config({}, model=model)
>>> transform = create_transform(**config)
>>> url, filename = ("https://github.com/pytorch/hub/raw/master/images/dog.jpg", "dog.jpg")
>>> urllib.request.urlretrieve(url, filename)
>>> img = Image.open(filename).convert('RGB')
>>> tensor = transform(img).unsqueeze(0) # transform and add batch dimension
```
To get the model predictions:
```py
>>> import torch
>>> with torch.no_grad():
... out = model(tensor)
>>> probabilities = torch.nn.functional.softmax(out[0], dim=0)
>>> print(probabilities.shape)
>>> # prints: torch.Size([1000])
```
To get the top-5 predictions class names:
```py
>>> # Get imagenet class mappings
>>> url, filename = ("https://raw.githubusercontent.com/pytorch/hub/master/imagenet_classes.txt", "imagenet_classes.txt")
>>> urllib.request.urlretrieve(url, filename)
>>> with open("imagenet_classes.txt", "r") as f:
... categories = [s.strip() for s in f.readlines()]
>>> # Print top categories per image
>>> top5_prob, top5_catid = torch.topk(probabilities, 5)
>>> for i in range(top5_prob.size(0)):
... print(categories[top5_catid[i]], top5_prob[i].item())
>>> # prints class names and probabilities like:
>>> # [('Samoyed', 0.6425196528434753), ('Pomeranian', 0.04062102362513542), ('keeshond', 0.03186424449086189), ('white wolf', 0.01739676296710968), ('Eskimo dog', 0.011717947199940681)]
```
Replace the model name with the variant you want to use, e.g. `ig_resnext101_32x16d`. You can find the IDs in the model summaries at the top of this page.
To extract image features with this model, follow the [timm feature extraction examples](../feature_extraction), just change the name of the model you want to use.
## How do I finetune this model?
You can finetune any of the pre-trained models just by changing the classifier (the last layer).
```py
>>> model = timm.create_model('ig_resnext101_32x16d', pretrained=True, num_classes=NUM_FINETUNE_CLASSES)
```
To finetune on your own dataset, you have to write a training loop or adapt [timm's training
script](https://github.com/rwightman/pytorch-image-models/blob/master/train.py) to use your dataset.
## How do I train this model?
You can follow the [timm recipe scripts](../scripts) for training a new model afresh.
## Citation
```BibTeX
@misc{mahajan2018exploring,
title={Exploring the Limits of Weakly Supervised Pretraining},
author={Dhruv Mahajan and Ross Girshick and Vignesh Ramanathan and Kaiming He and Manohar Paluri and Yixuan Li and Ashwin Bharambe and Laurens van der Maaten},
year={2018},
eprint={1805.00932},
archivePrefix={arXiv},
primaryClass={cs.CV}
}
```
<!--
Type: model-index
Collections:
- Name: IG ResNeXt
Paper:
Title: Exploring the Limits of Weakly Supervised Pretraining
URL: https://paperswithcode.com/paper/exploring-the-limits-of-weakly-supervised
Models:
- Name: ig_resnext101_32x16d
In Collection: IG ResNeXt
Metadata:
FLOPs: 46623691776
Parameters: 194030000
File Size: 777518664
Architecture:
- 1x1 Convolution
- Batch Normalization
- Convolution
- Global Average Pooling
- Grouped Convolution
- Max Pooling
- ReLU
- ResNeXt Block
- Residual Connection
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- IG-3.5B-17k
- ImageNet
Training Resources: 336x GPUs
ID: ig_resnext101_32x16d
Epochs: 100
Layers: 101
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 8064
Image Size: '224'
Weight Decay: 0.001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/resnet.py#L874
Weights: https://download.pytorch.org/models/ig_resnext101_32x16-c6f796b0.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 84.16%
Top 5 Accuracy: 97.19%
- Name: ig_resnext101_32x32d
In Collection: IG ResNeXt
Metadata:
FLOPs: 112225170432
Parameters: 468530000
File Size: 1876573776
Architecture:
- 1x1 Convolution
- Batch Normalization
- Convolution
- Global Average Pooling
- Grouped Convolution
- Max Pooling
- ReLU
- ResNeXt Block
- Residual Connection
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- IG-3.5B-17k
- ImageNet
Training Resources: 336x GPUs
ID: ig_resnext101_32x32d
Epochs: 100
Layers: 101
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 8064
Image Size: '224'
Weight Decay: 0.001
Interpolation: bilinear
Minibatch Size: 8064
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/resnet.py#L885
Weights: https://download.pytorch.org/models/ig_resnext101_32x32-e4b90b00.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 85.09%
Top 5 Accuracy: 97.44%
- Name: ig_resnext101_32x48d
In Collection: IG ResNeXt
Metadata:
FLOPs: 197446554624
Parameters: 828410000
File Size: 3317136976
Architecture:
- 1x1 Convolution
- Batch Normalization
- Convolution
- Global Average Pooling
- Grouped Convolution
- Max Pooling
- ReLU
- ResNeXt Block
- Residual Connection
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- IG-3.5B-17k
- ImageNet
Training Resources: 336x GPUs
ID: ig_resnext101_32x48d
Epochs: 100
Layers: 101
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 8064
Image Size: '224'
Weight Decay: 0.001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/resnet.py#L896
Weights: https://download.pytorch.org/models/ig_resnext101_32x48-3e41cc8a.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 85.42%
Top 5 Accuracy: 97.58%
- Name: ig_resnext101_32x8d
In Collection: IG ResNeXt
Metadata:
FLOPs: 21180417024
Parameters: 88790000
File Size: 356056638
Architecture:
- 1x1 Convolution
- Batch Normalization
- Convolution
- Global Average Pooling
- Grouped Convolution
- Max Pooling
- ReLU
- ResNeXt Block
- Residual Connection
- Softmax
Tasks:
- Image Classification
Training Techniques:
- Nesterov Accelerated Gradient
- Weight Decay
Training Data:
- IG-3.5B-17k
- ImageNet
Training Resources: 336x GPUs
ID: ig_resnext101_32x8d
Epochs: 100
Layers: 101
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 8064
Image Size: '224'
Weight Decay: 0.001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/resnet.py#L863
Weights: https://download.pytorch.org/models/ig_resnext101_32x8-c38310e5.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 82.7%
Top 5 Accuracy: 96.64%
-->
| pytorch-image-models/hfdocs/source/models/ig-resnext.mdx/0 | {
"file_path": "pytorch-image-models/hfdocs/source/models/ig-resnext.mdx",
"repo_id": "pytorch-image-models",
"token_count": 3231
} | 183 |
# Res2Net
**Res2Net** is an image model that employs a variation on bottleneck residual blocks, [Res2Net Blocks](https://paperswithcode.com/method/res2net-block). The motivation is to be able to represent features at multiple scales. This is achieved through a novel building block for CNNs that constructs hierarchical residual-like connections within one single residual block. This represents multi-scale features at a granular level and increases the range of receptive fields for each network layer.
## How do I use this model on an image?
To load a pretrained model:
```py
>>> import timm
>>> model = timm.create_model('res2net101_26w_4s', pretrained=True)
>>> model.eval()
```
To load and preprocess the image:
```py
>>> import urllib
>>> from PIL import Image
>>> from timm.data import resolve_data_config
>>> from timm.data.transforms_factory import create_transform
>>> config = resolve_data_config({}, model=model)
>>> transform = create_transform(**config)
>>> url, filename = ("https://github.com/pytorch/hub/raw/master/images/dog.jpg", "dog.jpg")
>>> urllib.request.urlretrieve(url, filename)
>>> img = Image.open(filename).convert('RGB')
>>> tensor = transform(img).unsqueeze(0) # transform and add batch dimension
```
To get the model predictions:
```py
>>> import torch
>>> with torch.no_grad():
... out = model(tensor)
>>> probabilities = torch.nn.functional.softmax(out[0], dim=0)
>>> print(probabilities.shape)
>>> # prints: torch.Size([1000])
```
To get the top-5 predictions class names:
```py
>>> # Get imagenet class mappings
>>> url, filename = ("https://raw.githubusercontent.com/pytorch/hub/master/imagenet_classes.txt", "imagenet_classes.txt")
>>> urllib.request.urlretrieve(url, filename)
>>> with open("imagenet_classes.txt", "r") as f:
... categories = [s.strip() for s in f.readlines()]
>>> # Print top categories per image
>>> top5_prob, top5_catid = torch.topk(probabilities, 5)
>>> for i in range(top5_prob.size(0)):
... print(categories[top5_catid[i]], top5_prob[i].item())
>>> # prints class names and probabilities like:
>>> # [('Samoyed', 0.6425196528434753), ('Pomeranian', 0.04062102362513542), ('keeshond', 0.03186424449086189), ('white wolf', 0.01739676296710968), ('Eskimo dog', 0.011717947199940681)]
```
Replace the model name with the variant you want to use, e.g. `res2net101_26w_4s`. You can find the IDs in the model summaries at the top of this page.
To extract image features with this model, follow the [timm feature extraction examples](../feature_extraction), just change the name of the model you want to use.
## How do I finetune this model?
You can finetune any of the pre-trained models just by changing the classifier (the last layer).
```py
>>> model = timm.create_model('res2net101_26w_4s', pretrained=True, num_classes=NUM_FINETUNE_CLASSES)
```
To finetune on your own dataset, you have to write a training loop or adapt [timm's training
script](https://github.com/rwightman/pytorch-image-models/blob/master/train.py) to use your dataset.
## How do I train this model?
You can follow the [timm recipe scripts](../scripts) for training a new model afresh.
## Citation
```BibTeX
@article{Gao_2021,
title={Res2Net: A New Multi-Scale Backbone Architecture},
volume={43},
ISSN={1939-3539},
url={http://dx.doi.org/10.1109/TPAMI.2019.2938758},
DOI={10.1109/tpami.2019.2938758},
number={2},
journal={IEEE Transactions on Pattern Analysis and Machine Intelligence},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Gao, Shang-Hua and Cheng, Ming-Ming and Zhao, Kai and Zhang, Xin-Yu and Yang, Ming-Hsuan and Torr, Philip},
year={2021},
month={Feb},
pages={652–662}
}
```
<!--
Type: model-index
Collections:
- Name: Res2Net
Paper:
Title: 'Res2Net: A New Multi-scale Backbone Architecture'
URL: https://paperswithcode.com/paper/res2net-a-new-multi-scale-backbone
Models:
- Name: res2net101_26w_4s
In Collection: Res2Net
Metadata:
FLOPs: 10415881200
Parameters: 45210000
File Size: 181456059
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net101_26w_4s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L152
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net101_26w_4s-02a759a1.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 79.19%
Top 5 Accuracy: 94.43%
- Name: res2net50_14w_8s
In Collection: Res2Net
Metadata:
FLOPs: 5403546768
Parameters: 25060000
File Size: 100638543
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net50_14w_8s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L196
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net50_14w_8s-6527dddc.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 78.14%
Top 5 Accuracy: 93.86%
- Name: res2net50_26w_4s
In Collection: Res2Net
Metadata:
FLOPs: 5499974064
Parameters: 25700000
File Size: 103110087
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net50_26w_4s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L141
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net50_26w_4s-06e79181.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.99%
Top 5 Accuracy: 93.85%
- Name: res2net50_26w_6s
In Collection: Res2Net
Metadata:
FLOPs: 8130156528
Parameters: 37050000
File Size: 148603239
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net50_26w_6s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L163
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net50_26w_6s-19041792.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 78.57%
Top 5 Accuracy: 94.12%
- Name: res2net50_26w_8s
In Collection: Res2Net
Metadata:
FLOPs: 10760338992
Parameters: 48400000
File Size: 194085165
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net50_26w_8s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L174
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net50_26w_8s-2c7c9f12.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 79.19%
Top 5 Accuracy: 94.37%
- Name: res2net50_48w_2s
In Collection: Res2Net
Metadata:
FLOPs: 5375291520
Parameters: 25290000
File Size: 101421406
Architecture:
- Batch Normalization
- Convolution
- Global Average Pooling
- ReLU
- Res2Net Block
Tasks:
- Image Classification
Training Techniques:
- SGD with Momentum
- Weight Decay
Training Data:
- ImageNet
Training Resources: 4x Titan Xp GPUs
ID: res2net50_48w_2s
LR: 0.1
Epochs: 100
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 256
Image Size: '224'
Weight Decay: 0.0001
Interpolation: bilinear
Code: https://github.com/rwightman/pytorch-image-models/blob/d8e69206be253892b2956341fea09fdebfaae4e3/timm/models/res2net.py#L185
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-res2net/res2net50_48w_2s-afed724a.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.53%
Top 5 Accuracy: 93.56%
--> | pytorch-image-models/hfdocs/source/models/res2net.mdx/0 | {
"file_path": "pytorch-image-models/hfdocs/source/models/res2net.mdx",
"repo_id": "pytorch-image-models",
"token_count": 3950
} | 184 |
# (Tensorflow) EfficientNet CondConv
**EfficientNet** is a convolutional neural network architecture and scaling method that uniformly scales all dimensions of depth/width/resolution using a *compound coefficient*. Unlike conventional practice that arbitrary scales these factors, the EfficientNet scaling method uniformly scales network width, depth, and resolution with a set of fixed scaling coefficients. For example, if we want to use \\( 2^N \\) times more computational resources, then we can simply increase the network depth by \\( \alpha ^ N \\), width by \\( \beta ^ N \\), and image size by \\( \gamma ^ N \\), where \\( \alpha, \beta, \gamma \\) are constant coefficients determined by a small grid search on the original small model. EfficientNet uses a compound coefficient \\( \phi \\) to uniformly scales network width, depth, and resolution in a principled way.
The compound scaling method is justified by the intuition that if the input image is bigger, then the network needs more layers to increase the receptive field and more channels to capture more fine-grained patterns on the bigger image.
The base EfficientNet-B0 network is based on the inverted bottleneck residual blocks of [MobileNetV2](https://paperswithcode.com/method/mobilenetv2), in addition to squeeze-and-excitation blocks.
This collection of models amends EfficientNet by adding [CondConv](https://paperswithcode.com/method/condconv) convolutions.
The weights from this model were ported from [Tensorflow/TPU](https://github.com/tensorflow/tpu).
## How do I use this model on an image?
To load a pretrained model:
```py
>>> import timm
>>> model = timm.create_model('tf_efficientnet_cc_b0_4e', pretrained=True)
>>> model.eval()
```
To load and preprocess the image:
```py
>>> import urllib
>>> from PIL import Image
>>> from timm.data import resolve_data_config
>>> from timm.data.transforms_factory import create_transform
>>> config = resolve_data_config({}, model=model)
>>> transform = create_transform(**config)
>>> url, filename = ("https://github.com/pytorch/hub/raw/master/images/dog.jpg", "dog.jpg")
>>> urllib.request.urlretrieve(url, filename)
>>> img = Image.open(filename).convert('RGB')
>>> tensor = transform(img).unsqueeze(0) # transform and add batch dimension
```
To get the model predictions:
```py
>>> import torch
>>> with torch.no_grad():
... out = model(tensor)
>>> probabilities = torch.nn.functional.softmax(out[0], dim=0)
>>> print(probabilities.shape)
>>> # prints: torch.Size([1000])
```
To get the top-5 predictions class names:
```py
>>> # Get imagenet class mappings
>>> url, filename = ("https://raw.githubusercontent.com/pytorch/hub/master/imagenet_classes.txt", "imagenet_classes.txt")
>>> urllib.request.urlretrieve(url, filename)
>>> with open("imagenet_classes.txt", "r") as f:
... categories = [s.strip() for s in f.readlines()]
>>> # Print top categories per image
>>> top5_prob, top5_catid = torch.topk(probabilities, 5)
>>> for i in range(top5_prob.size(0)):
... print(categories[top5_catid[i]], top5_prob[i].item())
>>> # prints class names and probabilities like:
>>> # [('Samoyed', 0.6425196528434753), ('Pomeranian', 0.04062102362513542), ('keeshond', 0.03186424449086189), ('white wolf', 0.01739676296710968), ('Eskimo dog', 0.011717947199940681)]
```
Replace the model name with the variant you want to use, e.g. `tf_efficientnet_cc_b0_4e`. You can find the IDs in the model summaries at the top of this page.
To extract image features with this model, follow the [timm feature extraction examples](../feature_extraction), just change the name of the model you want to use.
## How do I finetune this model?
You can finetune any of the pre-trained models just by changing the classifier (the last layer).
```py
>>> model = timm.create_model('tf_efficientnet_cc_b0_4e', pretrained=True, num_classes=NUM_FINETUNE_CLASSES)
```
To finetune on your own dataset, you have to write a training loop or adapt [timm's training
script](https://github.com/rwightman/pytorch-image-models/blob/master/train.py) to use your dataset.
## How do I train this model?
You can follow the [timm recipe scripts](../scripts) for training a new model afresh.
## Citation
```BibTeX
@article{DBLP:journals/corr/abs-1904-04971,
author = {Brandon Yang and
Gabriel Bender and
Quoc V. Le and
Jiquan Ngiam},
title = {Soft Conditional Computation},
journal = {CoRR},
volume = {abs/1904.04971},
year = {2019},
url = {http://arxiv.org/abs/1904.04971},
archivePrefix = {arXiv},
eprint = {1904.04971},
timestamp = {Thu, 25 Apr 2019 13:55:01 +0200},
biburl = {https://dblp.org/rec/journals/corr/abs-1904-04971.bib},
bibsource = {dblp computer science bibliography, https://dblp.org}
}
```
<!--
Type: model-index
Collections:
- Name: TF EfficientNet CondConv
Paper:
Title: 'CondConv: Conditionally Parameterized Convolutions for Efficient Inference'
URL: https://paperswithcode.com/paper/soft-conditional-computation
Models:
- Name: tf_efficientnet_cc_b0_4e
In Collection: TF EfficientNet CondConv
Metadata:
FLOPs: 224153788
Parameters: 13310000
File Size: 53490940
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- CondConv
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- Label Smoothing
- RMSProp
- Stochastic Depth
- Weight Decay
Training Data:
- ImageNet
ID: tf_efficientnet_cc_b0_4e
LR: 0.256
Epochs: 350
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 2048
Image Size: '224'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1561
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_cc_b0_4e-4362b6b2.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.32%
Top 5 Accuracy: 93.32%
- Name: tf_efficientnet_cc_b0_8e
In Collection: TF EfficientNet CondConv
Metadata:
FLOPs: 224158524
Parameters: 24010000
File Size: 96287616
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- CondConv
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- Label Smoothing
- RMSProp
- Stochastic Depth
- Weight Decay
Training Data:
- ImageNet
ID: tf_efficientnet_cc_b0_8e
LR: 0.256
Epochs: 350
Crop Pct: '0.875'
Momentum: 0.9
Batch Size: 2048
Image Size: '224'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1572
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_cc_b0_8e-66184a25.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 77.91%
Top 5 Accuracy: 93.65%
- Name: tf_efficientnet_cc_b1_8e
In Collection: TF EfficientNet CondConv
Metadata:
FLOPs: 370427824
Parameters: 39720000
File Size: 159206198
Architecture:
- 1x1 Convolution
- Average Pooling
- Batch Normalization
- CondConv
- Convolution
- Dense Connections
- Dropout
- Inverted Residual Block
- Squeeze-and-Excitation Block
- Swish
Tasks:
- Image Classification
Training Techniques:
- AutoAugment
- Label Smoothing
- RMSProp
- Stochastic Depth
- Weight Decay
Training Data:
- ImageNet
ID: tf_efficientnet_cc_b1_8e
LR: 0.256
Epochs: 350
Crop Pct: '0.882'
Momentum: 0.9
Batch Size: 2048
Image Size: '240'
Weight Decay: 1.0e-05
Interpolation: bicubic
RMSProp Decay: 0.9
Label Smoothing: 0.1
BatchNorm Momentum: 0.99
Code: https://github.com/rwightman/pytorch-image-models/blob/9a25fdf3ad0414b4d66da443fe60ae0aa14edc84/timm/models/efficientnet.py#L1584
Weights: https://github.com/rwightman/pytorch-image-models/releases/download/v0.1-weights/tf_efficientnet_cc_b1_8e-f7c79ae1.pth
Results:
- Task: Image Classification
Dataset: ImageNet
Metrics:
Top 1 Accuracy: 79.33%
Top 5 Accuracy: 94.37%
-->
| pytorch-image-models/hfdocs/source/models/tf-efficientnet-condconv.mdx/0 | {
"file_path": "pytorch-image-models/hfdocs/source/models/tf-efficientnet-condconv.mdx",
"repo_id": "pytorch-image-models",
"token_count": 3303
} | 185 |
dependencies = ['torch']
import timm
globals().update(timm.models._registry._model_entrypoints)
| pytorch-image-models/hubconf.py/0 | {
"file_path": "pytorch-image-models/hubconf.py",
"repo_id": "pytorch-image-models",
"token_count": 32
} | 186 |
""" Quick n Simple Image Folder, Tarfile based DataSet
Hacked together by / Copyright 2019, Ross Wightman
"""
import io
import logging
from typing import Optional
import torch
import torch.utils.data as data
from PIL import Image
from .readers import create_reader
_logger = logging.getLogger(__name__)
_ERROR_RETRY = 50
class ImageDataset(data.Dataset):
def __init__(
self,
root,
reader=None,
split='train',
class_map=None,
load_bytes=False,
input_img_mode='RGB',
transform=None,
target_transform=None,
):
if reader is None or isinstance(reader, str):
reader = create_reader(
reader or '',
root=root,
split=split,
class_map=class_map
)
self.reader = reader
self.load_bytes = load_bytes
self.input_img_mode = input_img_mode
self.transform = transform
self.target_transform = target_transform
self._consecutive_errors = 0
def __getitem__(self, index):
img, target = self.reader[index]
try:
img = img.read() if self.load_bytes else Image.open(img)
except Exception as e:
_logger.warning(f'Skipped sample (index {index}, file {self.reader.filename(index)}). {str(e)}')
self._consecutive_errors += 1
if self._consecutive_errors < _ERROR_RETRY:
return self.__getitem__((index + 1) % len(self.reader))
else:
raise e
self._consecutive_errors = 0
if self.input_img_mode and not self.load_bytes:
img = img.convert(self.input_img_mode)
if self.transform is not None:
img = self.transform(img)
if target is None:
target = -1
elif self.target_transform is not None:
target = self.target_transform(target)
return img, target
def __len__(self):
return len(self.reader)
def filename(self, index, basename=False, absolute=False):
return self.reader.filename(index, basename, absolute)
def filenames(self, basename=False, absolute=False):
return self.reader.filenames(basename, absolute)
class IterableImageDataset(data.IterableDataset):
def __init__(
self,
root,
reader=None,
split='train',
class_map=None,
is_training=False,
batch_size=1,
num_samples=None,
seed=42,
repeats=0,
download=False,
input_img_mode='RGB',
input_key=None,
target_key=None,
transform=None,
target_transform=None,
max_steps=None,
):
assert reader is not None
if isinstance(reader, str):
self.reader = create_reader(
reader,
root=root,
split=split,
class_map=class_map,
is_training=is_training,
batch_size=batch_size,
num_samples=num_samples,
seed=seed,
repeats=repeats,
download=download,
input_img_mode=input_img_mode,
input_key=input_key,
target_key=target_key,
max_steps=max_steps,
)
else:
self.reader = reader
self.transform = transform
self.target_transform = target_transform
self._consecutive_errors = 0
def __iter__(self):
for img, target in self.reader:
if self.transform is not None:
img = self.transform(img)
if self.target_transform is not None:
target = self.target_transform(target)
yield img, target
def __len__(self):
if hasattr(self.reader, '__len__'):
return len(self.reader)
else:
return 0
def set_epoch(self, count):
# TFDS and WDS need external epoch count for deterministic cross process shuffle
if hasattr(self.reader, 'set_epoch'):
self.reader.set_epoch(count)
def set_loader_cfg(
self,
num_workers: Optional[int] = None,
):
# TFDS and WDS readers need # workers for correct # samples estimate before loader processes created
if hasattr(self.reader, 'set_loader_cfg'):
self.reader.set_loader_cfg(num_workers=num_workers)
def filename(self, index, basename=False, absolute=False):
assert False, 'Filename lookup by index not supported, use filenames().'
def filenames(self, basename=False, absolute=False):
return self.reader.filenames(basename, absolute)
class AugMixDataset(torch.utils.data.Dataset):
"""Dataset wrapper to perform AugMix or other clean/augmentation mixes"""
def __init__(self, dataset, num_splits=2):
self.augmentation = None
self.normalize = None
self.dataset = dataset
if self.dataset.transform is not None:
self._set_transforms(self.dataset.transform)
self.num_splits = num_splits
def _set_transforms(self, x):
assert isinstance(x, (list, tuple)) and len(x) == 3, 'Expecting a tuple/list of 3 transforms'
self.dataset.transform = x[0]
self.augmentation = x[1]
self.normalize = x[2]
@property
def transform(self):
return self.dataset.transform
@transform.setter
def transform(self, x):
self._set_transforms(x)
def _normalize(self, x):
return x if self.normalize is None else self.normalize(x)
def __getitem__(self, i):
x, y = self.dataset[i] # all splits share the same dataset base transform
x_list = [self._normalize(x)] # first split only normalizes (this is the 'clean' split)
# run the full augmentation on the remaining splits
for _ in range(self.num_splits - 1):
x_list.append(self._normalize(self.augmentation(x)))
return tuple(x_list), y
def __len__(self):
return len(self.dataset)
| pytorch-image-models/timm/data/dataset.py/0 | {
"file_path": "pytorch-image-models/timm/data/dataset.py",
"repo_id": "pytorch-image-models",
"token_count": 2918
} | 187 |
""" A dataset reader that reads tarfile based datasets
This reader can extract image samples from:
* a single tar of image files
* a folder of multiple tarfiles containing imagefiles
* a tar of tars containing image files
Labels are based on the combined folder and/or tar name structure.
Hacked together by / Copyright 2020 Ross Wightman
"""
import logging
import os
import pickle
import tarfile
from glob import glob
from typing import List, Tuple, Dict, Set, Optional, Union
import numpy as np
from timm.utils.misc import natural_key
from .class_map import load_class_map
from .img_extensions import get_img_extensions
from .reader import Reader
_logger = logging.getLogger(__name__)
CACHE_FILENAME_SUFFIX = '_tarinfos.pickle'
class TarState:
def __init__(self, tf: tarfile.TarFile = None, ti: tarfile.TarInfo = None):
self.tf: tarfile.TarFile = tf
self.ti: tarfile.TarInfo = ti
self.children: Dict[str, TarState] = {} # child states (tars within tars)
def reset(self):
self.tf = None
def _extract_tarinfo(tf: tarfile.TarFile, parent_info: Dict, extensions: Set[str]):
sample_count = 0
for i, ti in enumerate(tf):
if not ti.isfile():
continue
dirname, basename = os.path.split(ti.path)
name, ext = os.path.splitext(basename)
ext = ext.lower()
if ext == '.tar':
with tarfile.open(fileobj=tf.extractfile(ti), mode='r|') as ctf:
child_info = dict(
name=ti.name, path=os.path.join(parent_info['path'], name), ti=ti, children=[], samples=[])
sample_count += _extract_tarinfo(ctf, child_info, extensions=extensions)
_logger.debug(f'{i}/?. Extracted child tarinfos from {ti.name}. {len(child_info["samples"])} images.')
parent_info['children'].append(child_info)
elif ext in extensions:
parent_info['samples'].append(ti)
sample_count += 1
return sample_count
def extract_tarinfos(
root,
class_name_to_idx: Optional[Dict] = None,
cache_tarinfo: Optional[bool] = None,
extensions: Optional[Union[List, Tuple, Set]] = None,
sort: bool = True
):
extensions = get_img_extensions(as_set=True) if not extensions else set(extensions)
root_is_tar = False
if os.path.isfile(root):
assert os.path.splitext(root)[-1].lower() == '.tar'
tar_filenames = [root]
root, root_name = os.path.split(root)
root_name = os.path.splitext(root_name)[0]
root_is_tar = True
else:
root_name = root.strip(os.path.sep).split(os.path.sep)[-1]
tar_filenames = glob(os.path.join(root, '*.tar'), recursive=True)
num_tars = len(tar_filenames)
tar_bytes = sum([os.path.getsize(f) for f in tar_filenames])
assert num_tars, f'No .tar files found at specified path ({root}).'
_logger.info(f'Scanning {tar_bytes/1024**2:.2f}MB of tar files...')
info = dict(tartrees=[])
cache_path = ''
if cache_tarinfo is None:
cache_tarinfo = True if tar_bytes > 10*1024**3 else False # FIXME magic number, 10GB
if cache_tarinfo:
cache_filename = '_' + root_name + CACHE_FILENAME_SUFFIX
cache_path = os.path.join(root, cache_filename)
if os.path.exists(cache_path):
_logger.info(f'Reading tar info from cache file {cache_path}.')
with open(cache_path, 'rb') as pf:
info = pickle.load(pf)
assert len(info['tartrees']) == num_tars, "Cached tartree len doesn't match number of tarfiles"
else:
for i, fn in enumerate(tar_filenames):
path = '' if root_is_tar else os.path.splitext(os.path.basename(fn))[0]
with tarfile.open(fn, mode='r|') as tf: # tarinfo scans done in streaming mode
parent_info = dict(name=os.path.relpath(fn, root), path=path, ti=None, children=[], samples=[])
num_samples = _extract_tarinfo(tf, parent_info, extensions=extensions)
num_children = len(parent_info["children"])
_logger.debug(
f'{i}/{num_tars}. Extracted tarinfos from {fn}. {num_children} children, {num_samples} samples.')
info['tartrees'].append(parent_info)
if cache_path:
_logger.info(f'Writing tar info to cache file {cache_path}.')
with open(cache_path, 'wb') as pf:
pickle.dump(info, pf)
samples = []
labels = []
build_class_map = False
if class_name_to_idx is None:
build_class_map = True
# Flatten tartree info into lists of samples and targets w/ targets based on label id via
# class map arg or from unique paths.
# NOTE: currently only flattening up to two-levels, filesystem .tars and then one level of sub-tar children
# this covers my current use cases and keeps things a little easier to test for now.
tarfiles = []
def _label_from_paths(*path, leaf_only=True):
path = os.path.join(*path).strip(os.path.sep)
return path.split(os.path.sep)[-1] if leaf_only else path.replace(os.path.sep, '_')
def _add_samples(info, fn):
added = 0
for s in info['samples']:
label = _label_from_paths(info['path'], os.path.dirname(s.path))
if not build_class_map and label not in class_name_to_idx:
continue
samples.append((s, fn, info['ti']))
labels.append(label)
added += 1
return added
_logger.info(f'Collecting samples and building tar states.')
for parent_info in info['tartrees']:
# if tartree has children, we assume all samples are at the child level
tar_name = None if root_is_tar else parent_info['name']
tar_state = TarState()
parent_added = 0
for child_info in parent_info['children']:
child_added = _add_samples(child_info, fn=tar_name)
if child_added:
tar_state.children[child_info['name']] = TarState(ti=child_info['ti'])
parent_added += child_added
parent_added += _add_samples(parent_info, fn=tar_name)
if parent_added:
tarfiles.append((tar_name, tar_state))
del info
if build_class_map:
# build class index
sorted_labels = list(sorted(set(labels), key=natural_key))
class_name_to_idx = {c: idx for idx, c in enumerate(sorted_labels)}
_logger.info(f'Mapping targets and sorting samples.')
samples_and_targets = [(s, class_name_to_idx[l]) for s, l in zip(samples, labels) if l in class_name_to_idx]
if sort:
samples_and_targets = sorted(samples_and_targets, key=lambda k: natural_key(k[0][0].path))
samples, targets = zip(*samples_and_targets)
samples = np.array(samples)
targets = np.array(targets)
_logger.info(f'Finished processing {len(samples)} samples across {len(tarfiles)} tar files.')
return samples, targets, class_name_to_idx, tarfiles
class ReaderImageInTar(Reader):
""" Multi-tarfile dataset reader where there is one .tar file per class
"""
def __init__(self, root, class_map='', cache_tarfiles=True, cache_tarinfo=None):
super().__init__()
class_name_to_idx = None
if class_map:
class_name_to_idx = load_class_map(class_map, root)
self.root = root
self.samples, self.targets, self.class_name_to_idx, tarfiles = extract_tarinfos(
self.root,
class_name_to_idx=class_name_to_idx,
cache_tarinfo=cache_tarinfo
)
self.class_idx_to_name = {v: k for k, v in self.class_name_to_idx.items()}
if len(tarfiles) == 1 and tarfiles[0][0] is None:
self.root_is_tar = True
self.tar_state = tarfiles[0][1]
else:
self.root_is_tar = False
self.tar_state = dict(tarfiles)
self.cache_tarfiles = cache_tarfiles
def __len__(self):
return len(self.samples)
def __getitem__(self, index):
sample = self.samples[index]
target = self.targets[index]
sample_ti, parent_fn, child_ti = sample
parent_abs = os.path.join(self.root, parent_fn) if parent_fn else self.root
tf = None
cache_state = None
if self.cache_tarfiles:
cache_state = self.tar_state if self.root_is_tar else self.tar_state[parent_fn]
tf = cache_state.tf
if tf is None:
tf = tarfile.open(parent_abs)
if self.cache_tarfiles:
cache_state.tf = tf
if child_ti is not None:
ctf = cache_state.children[child_ti.name].tf if self.cache_tarfiles else None
if ctf is None:
ctf = tarfile.open(fileobj=tf.extractfile(child_ti))
if self.cache_tarfiles:
cache_state.children[child_ti.name].tf = ctf
tf = ctf
return tf.extractfile(sample_ti), target
def _filename(self, index, basename=False, absolute=False):
filename = self.samples[index][0].name
if basename:
filename = os.path.basename(filename)
return filename
| pytorch-image-models/timm/data/readers/reader_image_in_tar.py/0 | {
"file_path": "pytorch-image-models/timm/data/readers/reader_image_in_tar.py",
"repo_id": "pytorch-image-models",
"token_count": 4050
} | 188 |
"""
BlurPool layer inspired by
- Kornia's Max_BlurPool2d
- Making Convolutional Networks Shift-Invariant Again :cite:`zhang2019shiftinvar`
Hacked together by Chris Ha and Ross Wightman
"""
import torch
import torch.nn as nn
import torch.nn.functional as F
import numpy as np
from .padding import get_padding
class BlurPool2d(nn.Module):
r"""Creates a module that computes blurs and downsample a given feature map.
See :cite:`zhang2019shiftinvar` for more details.
Corresponds to the Downsample class, which does blurring and subsampling
Args:
channels = Number of input channels
filt_size (int): binomial filter size for blurring. currently supports 3 (default) and 5.
stride (int): downsampling filter stride
Returns:
torch.Tensor: the transformed tensor.
"""
def __init__(self, channels, filt_size=3, stride=2) -> None:
super(BlurPool2d, self).__init__()
assert filt_size > 1
self.channels = channels
self.filt_size = filt_size
self.stride = stride
self.padding = [get_padding(filt_size, stride, dilation=1)] * 4
coeffs = torch.tensor((np.poly1d((0.5, 0.5)) ** (self.filt_size - 1)).coeffs.astype(np.float32))
blur_filter = (coeffs[:, None] * coeffs[None, :])[None, None, :, :].repeat(self.channels, 1, 1, 1)
self.register_buffer('filt', blur_filter, persistent=False)
def forward(self, x: torch.Tensor) -> torch.Tensor:
x = F.pad(x, self.padding, 'reflect')
return F.conv2d(x, self.filt, stride=self.stride, groups=self.channels)
| pytorch-image-models/timm/layers/blur_pool.py/0 | {
"file_path": "pytorch-image-models/timm/layers/blur_pool.py",
"repo_id": "pytorch-image-models",
"token_count": 625
} | 189 |
""" 'Fast' Normalization Functions
For GroupNorm and LayerNorm these functions bypass typical AMP upcast to float32.
Additionally, for LayerNorm, the APEX fused LN is used if available (which also does not upcast)
Hacked together by / Copyright 2022 Ross Wightman
"""
from typing import List, Optional
import torch
from torch.nn import functional as F
try:
from apex.normalization.fused_layer_norm import fused_layer_norm_affine
has_apex = True
except ImportError:
has_apex = False
try:
from apex.normalization.fused_layer_norm import fused_rms_norm_affine, fused_rms_norm
has_apex_rmsnorm = True
except ImportError:
has_apex_rmsnorm = False
# fast (ie lower precision LN) can be disabled with this flag if issues crop up
_USE_FAST_NORM = False # defaulting to False for now
def is_fast_norm():
return _USE_FAST_NORM
def set_fast_norm(enable=True):
global _USE_FAST_NORM
_USE_FAST_NORM = enable
def fast_group_norm(
x: torch.Tensor,
num_groups: int,
weight: Optional[torch.Tensor] = None,
bias: Optional[torch.Tensor] = None,
eps: float = 1e-5
) -> torch.Tensor:
if torch.jit.is_scripting():
# currently cannot use is_autocast_enabled within torchscript
return F.group_norm(x, num_groups, weight, bias, eps)
if torch.is_autocast_enabled():
# normally native AMP casts GN inputs to float32
# here we use the low precision autocast dtype
# FIXME what to do re CPU autocast?
dt = torch.get_autocast_gpu_dtype()
x, weight, bias = x.to(dt), weight.to(dt), bias.to(dt) if bias is not None else None
with torch.cuda.amp.autocast(enabled=False):
return F.group_norm(x, num_groups, weight, bias, eps)
def fast_layer_norm(
x: torch.Tensor,
normalized_shape: List[int],
weight: Optional[torch.Tensor] = None,
bias: Optional[torch.Tensor] = None,
eps: float = 1e-5
) -> torch.Tensor:
if torch.jit.is_scripting():
# currently cannot use is_autocast_enabled within torchscript
return F.layer_norm(x, normalized_shape, weight, bias, eps)
if has_apex:
return fused_layer_norm_affine(x, weight, bias, normalized_shape, eps)
if torch.is_autocast_enabled():
# normally native AMP casts LN inputs to float32
# apex LN does not, this is behaving like Apex
dt = torch.get_autocast_gpu_dtype()
# FIXME what to do re CPU autocast?
x, weight, bias = x.to(dt), weight.to(dt), bias.to(dt) if bias is not None else None
with torch.cuda.amp.autocast(enabled=False):
return F.layer_norm(x, normalized_shape, weight, bias, eps)
def rms_norm(
x: torch.Tensor,
normalized_shape: List[int],
weight: Optional[torch.Tensor] = None,
eps: float = 1e-5,
):
norm_ndim = len(normalized_shape)
if torch.jit.is_scripting():
# ndim = len(x.shape)
# dims = list(range(ndim - norm_ndim, ndim)) # this doesn't work on pytorch <= 1.13.x
# NOTE -ve dims cause torchscript to crash in some cases, out of options to work around
assert norm_ndim == 1
v = torch.var(x, dim=-1).unsqueeze(-1) # ts crashes with -ve dim + keepdim=True
else:
dims = tuple(range(-1, -norm_ndim - 1, -1))
v = torch.var(x, dim=dims, keepdim=True)
x = x * torch.rsqrt(v + eps)
if weight is not None:
x = x * weight
return x
def fast_rms_norm(
x: torch.Tensor,
normalized_shape: List[int],
weight: Optional[torch.Tensor] = None,
eps: float = 1e-5,
) -> torch.Tensor:
if torch.jit.is_scripting():
# this must be by itself, cannot merge with has_apex_rmsnorm
return rms_norm(x, normalized_shape, weight, eps)
if has_apex_rmsnorm:
if weight is None:
return fused_rms_norm(x, normalized_shape, eps)
else:
return fused_rms_norm_affine(x, weight, normalized_shape, eps)
# fallback
return rms_norm(x, normalized_shape, weight, eps)
| pytorch-image-models/timm/layers/fast_norm.py/0 | {
"file_path": "pytorch-image-models/timm/layers/fast_norm.py",
"repo_id": "pytorch-image-models",
"token_count": 1639
} | 190 |
""" MLP module w/ dropout and configurable activation layer
Hacked together by / Copyright 2020 Ross Wightman
"""
from functools import partial
from torch import nn as nn
from .grn import GlobalResponseNorm
from .helpers import to_2tuple
class Mlp(nn.Module):
""" MLP as used in Vision Transformer, MLP-Mixer and related networks
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.GELU,
norm_layer=None,
bias=True,
drop=0.,
use_conv=False,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
bias = to_2tuple(bias)
drop_probs = to_2tuple(drop)
linear_layer = partial(nn.Conv2d, kernel_size=1) if use_conv else nn.Linear
self.fc1 = linear_layer(in_features, hidden_features, bias=bias[0])
self.act = act_layer()
self.drop1 = nn.Dropout(drop_probs[0])
self.norm = norm_layer(hidden_features) if norm_layer is not None else nn.Identity()
self.fc2 = linear_layer(hidden_features, out_features, bias=bias[1])
self.drop2 = nn.Dropout(drop_probs[1])
def forward(self, x):
x = self.fc1(x)
x = self.act(x)
x = self.drop1(x)
x = self.norm(x)
x = self.fc2(x)
x = self.drop2(x)
return x
class GluMlp(nn.Module):
""" MLP w/ GLU style gating
See: https://arxiv.org/abs/1612.08083, https://arxiv.org/abs/2002.05202
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.Sigmoid,
norm_layer=None,
bias=True,
drop=0.,
use_conv=False,
gate_last=True,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
assert hidden_features % 2 == 0
bias = to_2tuple(bias)
drop_probs = to_2tuple(drop)
linear_layer = partial(nn.Conv2d, kernel_size=1) if use_conv else nn.Linear
self.chunk_dim = 1 if use_conv else -1
self.gate_last = gate_last # use second half of width for gate
self.fc1 = linear_layer(in_features, hidden_features, bias=bias[0])
self.act = act_layer()
self.drop1 = nn.Dropout(drop_probs[0])
self.norm = norm_layer(hidden_features // 2) if norm_layer is not None else nn.Identity()
self.fc2 = linear_layer(hidden_features // 2, out_features, bias=bias[1])
self.drop2 = nn.Dropout(drop_probs[1])
def init_weights(self):
# override init of fc1 w/ gate portion set to weight near zero, bias=1
fc1_mid = self.fc1.bias.shape[0] // 2
nn.init.ones_(self.fc1.bias[fc1_mid:])
nn.init.normal_(self.fc1.weight[fc1_mid:], std=1e-6)
def forward(self, x):
x = self.fc1(x)
x1, x2 = x.chunk(2, dim=self.chunk_dim)
x = x1 * self.act(x2) if self.gate_last else self.act(x1) * x2
x = self.drop1(x)
x = self.norm(x)
x = self.fc2(x)
x = self.drop2(x)
return x
SwiGLUPacked = partial(GluMlp, act_layer=nn.SiLU, gate_last=False)
class SwiGLU(nn.Module):
""" SwiGLU
NOTE: GluMLP above can implement SwiGLU, but this impl has split fc1 and
better matches some other common impl which makes mapping checkpoints simpler.
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.SiLU,
norm_layer=None,
bias=True,
drop=0.,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
bias = to_2tuple(bias)
drop_probs = to_2tuple(drop)
self.fc1_g = nn.Linear(in_features, hidden_features, bias=bias[0])
self.fc1_x = nn.Linear(in_features, hidden_features, bias=bias[0])
self.act = act_layer()
self.drop1 = nn.Dropout(drop_probs[0])
self.norm = norm_layer(hidden_features) if norm_layer is not None else nn.Identity()
self.fc2 = nn.Linear(hidden_features, out_features, bias=bias[1])
self.drop2 = nn.Dropout(drop_probs[1])
def init_weights(self):
# override init of fc1 w/ gate portion set to weight near zero, bias=1
nn.init.ones_(self.fc1_g.bias)
nn.init.normal_(self.fc1_g.weight, std=1e-6)
def forward(self, x):
x_gate = self.fc1_g(x)
x = self.fc1_x(x)
x = self.act(x_gate) * x
x = self.drop1(x)
x = self.norm(x)
x = self.fc2(x)
x = self.drop2(x)
return x
class GatedMlp(nn.Module):
""" MLP as used in gMLP
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.GELU,
norm_layer=None,
gate_layer=None,
bias=True,
drop=0.,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
bias = to_2tuple(bias)
drop_probs = to_2tuple(drop)
self.fc1 = nn.Linear(in_features, hidden_features, bias=bias[0])
self.act = act_layer()
self.drop1 = nn.Dropout(drop_probs[0])
if gate_layer is not None:
assert hidden_features % 2 == 0
self.gate = gate_layer(hidden_features)
hidden_features = hidden_features // 2 # FIXME base reduction on gate property?
else:
self.gate = nn.Identity()
self.norm = norm_layer(hidden_features) if norm_layer is not None else nn.Identity()
self.fc2 = nn.Linear(hidden_features, out_features, bias=bias[1])
self.drop2 = nn.Dropout(drop_probs[1])
def forward(self, x):
x = self.fc1(x)
x = self.act(x)
x = self.drop1(x)
x = self.gate(x)
x = self.norm(x)
x = self.fc2(x)
x = self.drop2(x)
return x
class ConvMlp(nn.Module):
""" MLP using 1x1 convs that keeps spatial dims
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.ReLU,
norm_layer=None,
bias=True,
drop=0.,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
bias = to_2tuple(bias)
self.fc1 = nn.Conv2d(in_features, hidden_features, kernel_size=1, bias=bias[0])
self.norm = norm_layer(hidden_features) if norm_layer else nn.Identity()
self.act = act_layer()
self.drop = nn.Dropout(drop)
self.fc2 = nn.Conv2d(hidden_features, out_features, kernel_size=1, bias=bias[1])
def forward(self, x):
x = self.fc1(x)
x = self.norm(x)
x = self.act(x)
x = self.drop(x)
x = self.fc2(x)
return x
class GlobalResponseNormMlp(nn.Module):
""" MLP w/ Global Response Norm (see grn.py), nn.Linear or 1x1 Conv2d
"""
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
act_layer=nn.GELU,
bias=True,
drop=0.,
use_conv=False,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
bias = to_2tuple(bias)
drop_probs = to_2tuple(drop)
linear_layer = partial(nn.Conv2d, kernel_size=1) if use_conv else nn.Linear
self.fc1 = linear_layer(in_features, hidden_features, bias=bias[0])
self.act = act_layer()
self.drop1 = nn.Dropout(drop_probs[0])
self.grn = GlobalResponseNorm(hidden_features, channels_last=not use_conv)
self.fc2 = linear_layer(hidden_features, out_features, bias=bias[1])
self.drop2 = nn.Dropout(drop_probs[1])
def forward(self, x):
x = self.fc1(x)
x = self.act(x)
x = self.drop1(x)
x = self.grn(x)
x = self.fc2(x)
x = self.drop2(x)
return x
| pytorch-image-models/timm/layers/mlp.py/0 | {
"file_path": "pytorch-image-models/timm/layers/mlp.py",
"repo_id": "pytorch-image-models",
"token_count": 4251
} | 191 |
""" Squeeze-and-Excitation Channel Attention
An SE implementation originally based on PyTorch SE-Net impl.
Has since evolved with additional functionality / configuration.
Paper: `Squeeze-and-Excitation Networks` - https://arxiv.org/abs/1709.01507
Also included is Effective Squeeze-Excitation (ESE).
Paper: `CenterMask : Real-Time Anchor-Free Instance Segmentation` - https://arxiv.org/abs/1911.06667
Hacked together by / Copyright 2021 Ross Wightman
"""
from torch import nn as nn
from .create_act import create_act_layer
from .helpers import make_divisible
class SEModule(nn.Module):
""" SE Module as defined in original SE-Nets with a few additions
Additions include:
* divisor can be specified to keep channels % div == 0 (default: 8)
* reduction channels can be specified directly by arg (if rd_channels is set)
* reduction channels can be specified by float rd_ratio (default: 1/16)
* global max pooling can be added to the squeeze aggregation
* customizable activation, normalization, and gate layer
"""
def __init__(
self, channels, rd_ratio=1. / 16, rd_channels=None, rd_divisor=8, add_maxpool=False,
bias=True, act_layer=nn.ReLU, norm_layer=None, gate_layer='sigmoid'):
super(SEModule, self).__init__()
self.add_maxpool = add_maxpool
if not rd_channels:
rd_channels = make_divisible(channels * rd_ratio, rd_divisor, round_limit=0.)
self.fc1 = nn.Conv2d(channels, rd_channels, kernel_size=1, bias=bias)
self.bn = norm_layer(rd_channels) if norm_layer else nn.Identity()
self.act = create_act_layer(act_layer, inplace=True)
self.fc2 = nn.Conv2d(rd_channels, channels, kernel_size=1, bias=bias)
self.gate = create_act_layer(gate_layer)
def forward(self, x):
x_se = x.mean((2, 3), keepdim=True)
if self.add_maxpool:
# experimental codepath, may remove or change
x_se = 0.5 * x_se + 0.5 * x.amax((2, 3), keepdim=True)
x_se = self.fc1(x_se)
x_se = self.act(self.bn(x_se))
x_se = self.fc2(x_se)
return x * self.gate(x_se)
SqueezeExcite = SEModule # alias
class EffectiveSEModule(nn.Module):
""" 'Effective Squeeze-Excitation
From `CenterMask : Real-Time Anchor-Free Instance Segmentation` - https://arxiv.org/abs/1911.06667
"""
def __init__(self, channels, add_maxpool=False, gate_layer='hard_sigmoid', **_):
super(EffectiveSEModule, self).__init__()
self.add_maxpool = add_maxpool
self.fc = nn.Conv2d(channels, channels, kernel_size=1, padding=0)
self.gate = create_act_layer(gate_layer)
def forward(self, x):
x_se = x.mean((2, 3), keepdim=True)
if self.add_maxpool:
# experimental codepath, may remove or change
x_se = 0.5 * x_se + 0.5 * x.amax((2, 3), keepdim=True)
x_se = self.fc(x_se)
return x * self.gate(x_se)
EffectiveSqueezeExcite = EffectiveSEModule # alias
class SqueezeExciteCl(nn.Module):
""" SE Module as defined in original SE-Nets with a few additions
Additions include:
* divisor can be specified to keep channels % div == 0 (default: 8)
* reduction channels can be specified directly by arg (if rd_channels is set)
* reduction channels can be specified by float rd_ratio (default: 1/16)
* global max pooling can be added to the squeeze aggregation
* customizable activation, normalization, and gate layer
"""
def __init__(
self, channels, rd_ratio=1. / 16, rd_channels=None, rd_divisor=8,
bias=True, act_layer=nn.ReLU, gate_layer='sigmoid'):
super().__init__()
if not rd_channels:
rd_channels = make_divisible(channels * rd_ratio, rd_divisor, round_limit=0.)
self.fc1 = nn.Linear(channels, rd_channels, bias=bias)
self.act = create_act_layer(act_layer, inplace=True)
self.fc2 = nn.Linear(rd_channels, channels, bias=bias)
self.gate = create_act_layer(gate_layer)
def forward(self, x):
x_se = x.mean((1, 2), keepdims=True) # FIXME avg dim [1:n-1], don't assume 2D NHWC
x_se = self.fc1(x_se)
x_se = self.act(x_se)
x_se = self.fc2(x_se)
return x * self.gate(x_se) | pytorch-image-models/timm/layers/squeeze_excite.py/0 | {
"file_path": "pytorch-image-models/timm/layers/squeeze_excite.py",
"repo_id": "pytorch-image-models",
"token_count": 1859
} | 192 |
""" PyTorch Feature Extraction Helpers
A collection of classes, functions, modules to help extract features from models
and provide a common interface for describing them.
The return_layers, module re-writing idea inspired by torchvision IntermediateLayerGetter
https://github.com/pytorch/vision/blob/d88d8961ae51507d0cb680329d985b1488b1b76b/torchvision/models/_utils.py
Hacked together by / Copyright 2020 Ross Wightman
"""
from collections import OrderedDict, defaultdict
from copy import deepcopy
from functools import partial
from typing import Dict, List, Sequence, Tuple, Union
import torch
import torch.nn as nn
from torch.utils.checkpoint import checkpoint
from timm.layers import Format
__all__ = ['FeatureInfo', 'FeatureHooks', 'FeatureDictNet', 'FeatureListNet', 'FeatureHookNet']
class FeatureInfo:
def __init__(self, feature_info: List[Dict], out_indices: Tuple[int]):
prev_reduction = 1
for i, fi in enumerate(feature_info):
# sanity check the mandatory fields, there may be additional fields depending on the model
assert 'num_chs' in fi and fi['num_chs'] > 0
assert 'reduction' in fi and fi['reduction'] >= prev_reduction
prev_reduction = fi['reduction']
assert 'module' in fi
fi.setdefault('index', i)
self.out_indices = out_indices
self.info = feature_info
def from_other(self, out_indices: Tuple[int]):
return FeatureInfo(deepcopy(self.info), out_indices)
def get(self, key, idx=None):
""" Get value by key at specified index (indices)
if idx == None, returns value for key at each output index
if idx is an integer, return value for that feature module index (ignoring output indices)
if idx is a list/tupple, return value for each module index (ignoring output indices)
"""
if idx is None:
return [self.info[i][key] for i in self.out_indices]
if isinstance(idx, (tuple, list)):
return [self.info[i][key] for i in idx]
else:
return self.info[idx][key]
def get_dicts(self, keys=None, idx=None):
""" return info dicts for specified keys (or all if None) at specified indices (or out_indices if None)
"""
if idx is None:
if keys is None:
return [self.info[i] for i in self.out_indices]
else:
return [{k: self.info[i][k] for k in keys} for i in self.out_indices]
if isinstance(idx, (tuple, list)):
return [self.info[i] if keys is None else {k: self.info[i][k] for k in keys} for i in idx]
else:
return self.info[idx] if keys is None else {k: self.info[idx][k] for k in keys}
def channels(self, idx=None):
""" feature channels accessor
"""
return self.get('num_chs', idx)
def reduction(self, idx=None):
""" feature reduction (output stride) accessor
"""
return self.get('reduction', idx)
def module_name(self, idx=None):
""" feature module name accessor
"""
return self.get('module', idx)
def __getitem__(self, item):
return self.info[item]
def __len__(self):
return len(self.info)
class FeatureHooks:
""" Feature Hook Helper
This module helps with the setup and extraction of hooks for extracting features from
internal nodes in a model by node name.
FIXME This works well in eager Python but needs redesign for torchscript.
"""
def __init__(
self,
hooks: Sequence[str],
named_modules: dict,
out_map: Sequence[Union[int, str]] = None,
default_hook_type: str = 'forward',
):
# setup feature hooks
self._feature_outputs = defaultdict(OrderedDict)
modules = {k: v for k, v in named_modules}
for i, h in enumerate(hooks):
hook_name = h['module']
m = modules[hook_name]
hook_id = out_map[i] if out_map else hook_name
hook_fn = partial(self._collect_output_hook, hook_id)
hook_type = h.get('hook_type', default_hook_type)
if hook_type == 'forward_pre':
m.register_forward_pre_hook(hook_fn)
elif hook_type == 'forward':
m.register_forward_hook(hook_fn)
else:
assert False, "Unsupported hook type"
def _collect_output_hook(self, hook_id, *args):
x = args[-1] # tensor we want is last argument, output for fwd, input for fwd_pre
if isinstance(x, tuple):
x = x[0] # unwrap input tuple
self._feature_outputs[x.device][hook_id] = x
def get_output(self, device) -> Dict[str, torch.tensor]:
output = self._feature_outputs[device]
self._feature_outputs[device] = OrderedDict() # clear after reading
return output
def _module_list(module, flatten_sequential=False):
# a yield/iter would be better for this but wouldn't be compatible with torchscript
ml = []
for name, module in module.named_children():
if flatten_sequential and isinstance(module, nn.Sequential):
# first level of Sequential containers is flattened into containing model
for child_name, child_module in module.named_children():
combined = [name, child_name]
ml.append(('_'.join(combined), '.'.join(combined), child_module))
else:
ml.append((name, name, module))
return ml
def _get_feature_info(net, out_indices):
feature_info = getattr(net, 'feature_info')
if isinstance(feature_info, FeatureInfo):
return feature_info.from_other(out_indices)
elif isinstance(feature_info, (list, tuple)):
return FeatureInfo(net.feature_info, out_indices)
else:
assert False, "Provided feature_info is not valid"
def _get_return_layers(feature_info, out_map):
module_names = feature_info.module_name()
return_layers = {}
for i, name in enumerate(module_names):
return_layers[name] = out_map[i] if out_map is not None else feature_info.out_indices[i]
return return_layers
class FeatureDictNet(nn.ModuleDict):
""" Feature extractor with OrderedDict return
Wrap a model and extract features as specified by the out indices, the network is
partially re-built from contained modules.
There is a strong assumption that the modules have been registered into the model in the same
order as they are used. There should be no reuse of the same nn.Module more than once, including
trivial modules like `self.relu = nn.ReLU`.
Only submodules that are directly assigned to the model class (`model.feature1`) or at most
one Sequential container deep (`model.features.1`, with flatten_sequent=True) can be captured.
All Sequential containers that are directly assigned to the original model will have their
modules assigned to this module with the name `model.features.1` being changed to `model.features_1`
"""
def __init__(
self,
model: nn.Module,
out_indices: Tuple[int, ...] = (0, 1, 2, 3, 4),
out_map: Sequence[Union[int, str]] = None,
output_fmt: str = 'NCHW',
feature_concat: bool = False,
flatten_sequential: bool = False,
):
"""
Args:
model: Model from which to extract features.
out_indices: Output indices of the model features to extract.
out_map: Return id mapping for each output index, otherwise str(index) is used.
feature_concat: Concatenate intermediate features that are lists or tuples instead of selecting
first element e.g. `x[0]`
flatten_sequential: Flatten first two-levels of sequential modules in model (re-writes model modules)
"""
super(FeatureDictNet, self).__init__()
self.feature_info = _get_feature_info(model, out_indices)
self.output_fmt = Format(output_fmt)
self.concat = feature_concat
self.grad_checkpointing = False
self.return_layers = {}
return_layers = _get_return_layers(self.feature_info, out_map)
modules = _module_list(model, flatten_sequential=flatten_sequential)
remaining = set(return_layers.keys())
layers = OrderedDict()
for new_name, old_name, module in modules:
layers[new_name] = module
if old_name in remaining:
# return id has to be consistently str type for torchscript
self.return_layers[new_name] = str(return_layers[old_name])
remaining.remove(old_name)
if not remaining:
break
assert not remaining and len(self.return_layers) == len(return_layers), \
f'Return layers ({remaining}) are not present in model'
self.update(layers)
def set_grad_checkpointing(self, enable: bool = True):
self.grad_checkpointing = enable
def _collect(self, x) -> (Dict[str, torch.Tensor]):
out = OrderedDict()
for i, (name, module) in enumerate(self.items()):
if self.grad_checkpointing and not torch.jit.is_scripting():
# Skipping checkpoint of first module because need a gradient at input
# Skipping last because networks with in-place ops might fail w/ checkpointing enabled
# NOTE: first_or_last module could be static, but recalc in is_scripting guard to avoid jit issues
first_or_last_module = i == 0 or i == max(len(self) - 1, 0)
x = module(x) if first_or_last_module else checkpoint(module, x)
else:
x = module(x)
if name in self.return_layers:
out_id = self.return_layers[name]
if isinstance(x, (tuple, list)):
# If model tap is a tuple or list, concat or select first element
# FIXME this may need to be more generic / flexible for some nets
out[out_id] = torch.cat(x, 1) if self.concat else x[0]
else:
out[out_id] = x
return out
def forward(self, x) -> Dict[str, torch.Tensor]:
return self._collect(x)
class FeatureListNet(FeatureDictNet):
""" Feature extractor with list return
A specialization of FeatureDictNet that always returns features as a list (values() of dict).
"""
def __init__(
self,
model: nn.Module,
out_indices: Tuple[int, ...] = (0, 1, 2, 3, 4),
output_fmt: str = 'NCHW',
feature_concat: bool = False,
flatten_sequential: bool = False,
):
"""
Args:
model: Model from which to extract features.
out_indices: Output indices of the model features to extract.
feature_concat: Concatenate intermediate features that are lists or tuples instead of selecting
first element e.g. `x[0]`
flatten_sequential: Flatten first two-levels of sequential modules in model (re-writes model modules)
"""
super().__init__(
model,
out_indices=out_indices,
output_fmt=output_fmt,
feature_concat=feature_concat,
flatten_sequential=flatten_sequential,
)
def forward(self, x) -> (List[torch.Tensor]):
return list(self._collect(x).values())
class FeatureHookNet(nn.ModuleDict):
""" FeatureHookNet
Wrap a model and extract features specified by the out indices using forward/forward-pre hooks.
If `no_rewrite` is True, features are extracted via hooks without modifying the underlying
network in any way.
If `no_rewrite` is False, the model will be re-written as in the
FeatureList/FeatureDict case by folding first to second (Sequential only) level modules into this one.
FIXME this does not currently work with Torchscript, see FeatureHooks class
"""
def __init__(
self,
model: nn.Module,
out_indices: Tuple[int, ...] = (0, 1, 2, 3, 4),
out_map: Sequence[Union[int, str]] = None,
return_dict: bool = False,
output_fmt: str = 'NCHW',
no_rewrite: bool = False,
flatten_sequential: bool = False,
default_hook_type: str = 'forward',
):
"""
Args:
model: Model from which to extract features.
out_indices: Output indices of the model features to extract.
out_map: Return id mapping for each output index, otherwise str(index) is used.
return_dict: Output features as a dict.
no_rewrite: Enforce that model is not re-written if True, ie no modules are removed / changed.
flatten_sequential arg must also be False if this is set True.
flatten_sequential: Re-write modules by flattening first two levels of nn.Sequential containers.
default_hook_type: The default hook type to use if not specified in model.feature_info.
"""
super().__init__()
assert not torch.jit.is_scripting()
self.feature_info = _get_feature_info(model, out_indices)
self.return_dict = return_dict
self.output_fmt = Format(output_fmt)
self.grad_checkpointing = False
layers = OrderedDict()
hooks = []
if no_rewrite:
assert not flatten_sequential
if hasattr(model, 'reset_classifier'): # make sure classifier is removed?
model.reset_classifier(0)
layers['body'] = model
hooks.extend(self.feature_info.get_dicts())
else:
modules = _module_list(model, flatten_sequential=flatten_sequential)
remaining = {
f['module']: f['hook_type'] if 'hook_type' in f else default_hook_type
for f in self.feature_info.get_dicts()
}
for new_name, old_name, module in modules:
layers[new_name] = module
for fn, fm in module.named_modules(prefix=old_name):
if fn in remaining:
hooks.append(dict(module=fn, hook_type=remaining[fn]))
del remaining[fn]
if not remaining:
break
assert not remaining, f'Return layers ({remaining}) are not present in model'
self.update(layers)
self.hooks = FeatureHooks(hooks, model.named_modules(), out_map=out_map)
def set_grad_checkpointing(self, enable: bool = True):
self.grad_checkpointing = enable
def forward(self, x):
for i, (name, module) in enumerate(self.items()):
if self.grad_checkpointing and not torch.jit.is_scripting():
# Skipping checkpoint of first module because need a gradient at input
# Skipping last because networks with in-place ops might fail w/ checkpointing enabled
# NOTE: first_or_last module could be static, but recalc in is_scripting guard to avoid jit issues
first_or_last_module = i == 0 or i == max(len(self) - 1, 0)
x = module(x) if first_or_last_module else checkpoint(module, x)
else:
x = module(x)
out = self.hooks.get_output(x.device)
return out if self.return_dict else list(out.values())
| pytorch-image-models/timm/models/_features.py/0 | {
"file_path": "pytorch-image-models/timm/models/_features.py",
"repo_id": "pytorch-image-models",
"token_count": 6555
} | 193 |
""" Class-Attention in Image Transformers (CaiT)
Paper: 'Going deeper with Image Transformers' - https://arxiv.org/abs/2103.17239
Original code and weights from https://github.com/facebookresearch/deit, copyright below
Modifications and additions for timm hacked together by / Copyright 2021, Ross Wightman
"""
# Copyright (c) 2015-present, Facebook, Inc.
# All rights reserved.
from functools import partial
import torch
import torch.nn as nn
from timm.data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
from timm.layers import PatchEmbed, Mlp, DropPath, trunc_normal_, use_fused_attn
from ._builder import build_model_with_cfg
from ._manipulate import checkpoint_seq
from ._registry import register_model, generate_default_cfgs
__all__ = ['Cait', 'ClassAttn', 'LayerScaleBlockClassAttn', 'LayerScaleBlock', 'TalkingHeadAttn']
class ClassAttn(nn.Module):
# taken from https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/vision_transformer.py
# with slight modifications to do CA
fused_attn: torch.jit.Final[bool]
def __init__(self, dim, num_heads=8, qkv_bias=False, attn_drop=0., proj_drop=0.):
super().__init__()
self.num_heads = num_heads
head_dim = dim // num_heads
self.scale = head_dim ** -0.5
self.fused_attn = use_fused_attn()
self.q = nn.Linear(dim, dim, bias=qkv_bias)
self.k = nn.Linear(dim, dim, bias=qkv_bias)
self.v = nn.Linear(dim, dim, bias=qkv_bias)
self.attn_drop = nn.Dropout(attn_drop)
self.proj = nn.Linear(dim, dim)
self.proj_drop = nn.Dropout(proj_drop)
def forward(self, x):
B, N, C = x.shape
q = self.q(x[:, 0]).unsqueeze(1).reshape(B, 1, self.num_heads, C // self.num_heads).permute(0, 2, 1, 3)
k = self.k(x).reshape(B, N, self.num_heads, C // self.num_heads).permute(0, 2, 1, 3)
v = self.v(x).reshape(B, N, self.num_heads, C // self.num_heads).permute(0, 2, 1, 3)
if self.fused_attn:
x_cls = torch.nn.functional.scaled_dot_product_attention(
q, k, v,
dropout_p=self.attn_drop.p if self.training else 0.,
)
else:
q = q * self.scale
attn = q @ k.transpose(-2, -1)
attn = attn.softmax(dim=-1)
attn = self.attn_drop(attn)
x_cls = attn @ v
x_cls = x_cls.transpose(1, 2).reshape(B, 1, C)
x_cls = self.proj(x_cls)
x_cls = self.proj_drop(x_cls)
return x_cls
class LayerScaleBlockClassAttn(nn.Module):
# taken from https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/vision_transformer.py
# with slight modifications to add CA and LayerScale
def __init__(
self,
dim,
num_heads,
mlp_ratio=4.,
qkv_bias=False,
proj_drop=0.,
attn_drop=0.,
drop_path=0.,
act_layer=nn.GELU,
norm_layer=nn.LayerNorm,
attn_block=ClassAttn,
mlp_block=Mlp,
init_values=1e-4,
):
super().__init__()
self.norm1 = norm_layer(dim)
self.attn = attn_block(
dim,
num_heads=num_heads,
qkv_bias=qkv_bias,
attn_drop=attn_drop,
proj_drop=proj_drop,
)
self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity()
self.norm2 = norm_layer(dim)
mlp_hidden_dim = int(dim * mlp_ratio)
self.mlp = mlp_block(
in_features=dim,
hidden_features=mlp_hidden_dim,
act_layer=act_layer,
drop=proj_drop,
)
self.gamma_1 = nn.Parameter(init_values * torch.ones(dim))
self.gamma_2 = nn.Parameter(init_values * torch.ones(dim))
def forward(self, x, x_cls):
u = torch.cat((x_cls, x), dim=1)
x_cls = x_cls + self.drop_path(self.gamma_1 * self.attn(self.norm1(u)))
x_cls = x_cls + self.drop_path(self.gamma_2 * self.mlp(self.norm2(x_cls)))
return x_cls
class TalkingHeadAttn(nn.Module):
# taken from https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/vision_transformer.py
# with slight modifications to add Talking Heads Attention (https://arxiv.org/pdf/2003.02436v1.pdf)
def __init__(self, dim, num_heads=8, qkv_bias=False, attn_drop=0., proj_drop=0.):
super().__init__()
self.num_heads = num_heads
head_dim = dim // num_heads
self.scale = head_dim ** -0.5
self.qkv = nn.Linear(dim, dim * 3, bias=qkv_bias)
self.attn_drop = nn.Dropout(attn_drop)
self.proj = nn.Linear(dim, dim)
self.proj_l = nn.Linear(num_heads, num_heads)
self.proj_w = nn.Linear(num_heads, num_heads)
self.proj_drop = nn.Dropout(proj_drop)
def forward(self, x):
B, N, C = x.shape
qkv = self.qkv(x).reshape(B, N, 3, self.num_heads, C // self.num_heads).permute(2, 0, 3, 1, 4)
q, k, v = qkv[0] * self.scale, qkv[1], qkv[2]
attn = q @ k.transpose(-2, -1)
attn = self.proj_l(attn.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
attn = attn.softmax(dim=-1)
attn = self.proj_w(attn.permute(0, 2, 3, 1)).permute(0, 3, 1, 2)
attn = self.attn_drop(attn)
x = (attn @ v).transpose(1, 2).reshape(B, N, C)
x = self.proj(x)
x = self.proj_drop(x)
return x
class LayerScaleBlock(nn.Module):
# taken from https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/vision_transformer.py
# with slight modifications to add layerScale
def __init__(
self,
dim,
num_heads,
mlp_ratio=4.,
qkv_bias=False,
proj_drop=0.,
attn_drop=0.,
drop_path=0.,
act_layer=nn.GELU,
norm_layer=nn.LayerNorm,
attn_block=TalkingHeadAttn,
mlp_block=Mlp,
init_values=1e-4,
):
super().__init__()
self.norm1 = norm_layer(dim)
self.attn = attn_block(
dim,
num_heads=num_heads,
qkv_bias=qkv_bias,
attn_drop=attn_drop,
proj_drop=proj_drop,
)
self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity()
self.norm2 = norm_layer(dim)
mlp_hidden_dim = int(dim * mlp_ratio)
self.mlp = mlp_block(
in_features=dim,
hidden_features=mlp_hidden_dim,
act_layer=act_layer,
drop=proj_drop,
)
self.gamma_1 = nn.Parameter(init_values * torch.ones(dim))
self.gamma_2 = nn.Parameter(init_values * torch.ones(dim))
def forward(self, x):
x = x + self.drop_path(self.gamma_1 * self.attn(self.norm1(x)))
x = x + self.drop_path(self.gamma_2 * self.mlp(self.norm2(x)))
return x
class Cait(nn.Module):
# taken from https://github.com/rwightman/pytorch-image-models/blob/master/timm/models/vision_transformer.py
# with slight modifications to adapt to our cait models
def __init__(
self,
img_size=224,
patch_size=16,
in_chans=3,
num_classes=1000,
global_pool='token',
embed_dim=768,
depth=12,
num_heads=12,
mlp_ratio=4.,
qkv_bias=True,
drop_rate=0.,
pos_drop_rate=0.,
proj_drop_rate=0.,
attn_drop_rate=0.,
drop_path_rate=0.,
block_layers=LayerScaleBlock,
block_layers_token=LayerScaleBlockClassAttn,
patch_layer=PatchEmbed,
norm_layer=partial(nn.LayerNorm, eps=1e-6),
act_layer=nn.GELU,
attn_block=TalkingHeadAttn,
mlp_block=Mlp,
init_values=1e-4,
attn_block_token_only=ClassAttn,
mlp_block_token_only=Mlp,
depth_token_only=2,
mlp_ratio_token_only=4.0
):
super().__init__()
assert global_pool in ('', 'token', 'avg')
self.num_classes = num_classes
self.global_pool = global_pool
self.num_features = self.embed_dim = embed_dim
self.grad_checkpointing = False
self.patch_embed = patch_layer(
img_size=img_size,
patch_size=patch_size,
in_chans=in_chans,
embed_dim=embed_dim,
)
num_patches = self.patch_embed.num_patches
self.cls_token = nn.Parameter(torch.zeros(1, 1, embed_dim))
self.pos_embed = nn.Parameter(torch.zeros(1, num_patches, embed_dim))
self.pos_drop = nn.Dropout(p=pos_drop_rate)
dpr = [drop_path_rate for i in range(depth)]
self.blocks = nn.Sequential(*[block_layers(
dim=embed_dim,
num_heads=num_heads,
mlp_ratio=mlp_ratio,
qkv_bias=qkv_bias,
proj_drop=proj_drop_rate,
attn_drop=attn_drop_rate,
drop_path=dpr[i],
norm_layer=norm_layer,
act_layer=act_layer,
attn_block=attn_block,
mlp_block=mlp_block,
init_values=init_values,
) for i in range(depth)])
self.blocks_token_only = nn.ModuleList([block_layers_token(
dim=embed_dim,
num_heads=num_heads,
mlp_ratio=mlp_ratio_token_only,
qkv_bias=qkv_bias,
norm_layer=norm_layer,
act_layer=act_layer,
attn_block=attn_block_token_only,
mlp_block=mlp_block_token_only,
init_values=init_values,
) for _ in range(depth_token_only)])
self.norm = norm_layer(embed_dim)
self.feature_info = [dict(num_chs=embed_dim, reduction=0, module='head')]
self.head_drop = nn.Dropout(drop_rate)
self.head = nn.Linear(embed_dim, num_classes) if num_classes > 0 else nn.Identity()
trunc_normal_(self.pos_embed, std=.02)
trunc_normal_(self.cls_token, std=.02)
self.apply(self._init_weights)
def _init_weights(self, m):
if isinstance(m, nn.Linear):
trunc_normal_(m.weight, std=.02)
if isinstance(m, nn.Linear) and m.bias is not None:
nn.init.constant_(m.bias, 0)
elif isinstance(m, nn.LayerNorm):
nn.init.constant_(m.bias, 0)
nn.init.constant_(m.weight, 1.0)
@torch.jit.ignore
def no_weight_decay(self):
return {'pos_embed', 'cls_token'}
@torch.jit.ignore
def set_grad_checkpointing(self, enable=True):
self.grad_checkpointing = enable
@torch.jit.ignore
def group_matcher(self, coarse=False):
def _matcher(name):
if any([name.startswith(n) for n in ('cls_token', 'pos_embed', 'patch_embed')]):
return 0
elif name.startswith('blocks.'):
return int(name.split('.')[1]) + 1
elif name.startswith('blocks_token_only.'):
# overlap token only blocks with last blocks
to_offset = len(self.blocks) - len(self.blocks_token_only) + 1
return int(name.split('.')[1]) + to_offset
elif name.startswith('norm.'):
return len(self.blocks)
else:
return float('inf')
return _matcher
@torch.jit.ignore
def get_classifier(self):
return self.head
def reset_classifier(self, num_classes, global_pool=None):
self.num_classes = num_classes
if global_pool is not None:
assert global_pool in ('', 'token', 'avg')
self.global_pool = global_pool
self.head = nn.Linear(self.num_features, num_classes) if num_classes > 0 else nn.Identity()
def forward_features(self, x):
x = self.patch_embed(x)
x = x + self.pos_embed
x = self.pos_drop(x)
if self.grad_checkpointing and not torch.jit.is_scripting():
x = checkpoint_seq(self.blocks, x)
else:
x = self.blocks(x)
cls_tokens = self.cls_token.expand(x.shape[0], -1, -1)
for i, blk in enumerate(self.blocks_token_only):
cls_tokens = blk(x, cls_tokens)
x = torch.cat((cls_tokens, x), dim=1)
x = self.norm(x)
return x
def forward_head(self, x, pre_logits: bool = False):
if self.global_pool:
x = x[:, 1:].mean(dim=1) if self.global_pool == 'avg' else x[:, 0]
x = self.head_drop(x)
return x if pre_logits else self.head(x)
def forward(self, x):
x = self.forward_features(x)
x = self.forward_head(x)
return x
def checkpoint_filter_fn(state_dict, model=None):
if 'model' in state_dict:
state_dict = state_dict['model']
checkpoint_no_module = {}
for k, v in state_dict.items():
checkpoint_no_module[k.replace('module.', '')] = v
return checkpoint_no_module
def _create_cait(variant, pretrained=False, **kwargs):
if kwargs.get('features_only', None):
raise RuntimeError('features_only not implemented for Vision Transformer models.')
model = build_model_with_cfg(
Cait,
variant,
pretrained,
pretrained_filter_fn=checkpoint_filter_fn,
**kwargs,
)
return model
def _cfg(url='', **kwargs):
return {
'url': url,
'num_classes': 1000, 'input_size': (3, 384, 384), 'pool_size': None,
'crop_pct': 1.0, 'interpolation': 'bicubic', 'fixed_input_size': True,
'mean': IMAGENET_DEFAULT_MEAN, 'std': IMAGENET_DEFAULT_STD,
'first_conv': 'patch_embed.proj', 'classifier': 'head',
**kwargs
}
default_cfgs = generate_default_cfgs({
'cait_xxs24_224.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/XXS24_224.pth',
input_size=(3, 224, 224),
),
'cait_xxs24_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/XXS24_384.pth',
),
'cait_xxs36_224.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/XXS36_224.pth',
input_size=(3, 224, 224),
),
'cait_xxs36_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/XXS36_384.pth',
),
'cait_xs24_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/XS24_384.pth',
),
'cait_s24_224.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/S24_224.pth',
input_size=(3, 224, 224),
),
'cait_s24_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/S24_384.pth',
),
'cait_s36_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/S36_384.pth',
),
'cait_m36_384.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/M36_384.pth',
),
'cait_m48_448.fb_dist_in1k': _cfg(
hf_hub_id='timm/',
url='https://dl.fbaipublicfiles.com/deit/M48_448.pth',
input_size=(3, 448, 448),
),
})
@register_model
def cait_xxs24_224(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=192, depth=24, num_heads=4, init_values=1e-5)
model = _create_cait('cait_xxs24_224', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_xxs24_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=192, depth=24, num_heads=4, init_values=1e-5)
model = _create_cait('cait_xxs24_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_xxs36_224(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=192, depth=36, num_heads=4, init_values=1e-5)
model = _create_cait('cait_xxs36_224', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_xxs36_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=192, depth=36, num_heads=4, init_values=1e-5)
model = _create_cait('cait_xxs36_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_xs24_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=288, depth=24, num_heads=6, init_values=1e-5)
model = _create_cait('cait_xs24_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_s24_224(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=384, depth=24, num_heads=8, init_values=1e-5)
model = _create_cait('cait_s24_224', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_s24_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=384, depth=24, num_heads=8, init_values=1e-5)
model = _create_cait('cait_s24_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_s36_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=384, depth=36, num_heads=8, init_values=1e-6)
model = _create_cait('cait_s36_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_m36_384(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=768, depth=36, num_heads=16, init_values=1e-6)
model = _create_cait('cait_m36_384', pretrained=pretrained, **dict(model_args, **kwargs))
return model
@register_model
def cait_m48_448(pretrained=False, **kwargs) -> Cait:
model_args = dict(patch_size=16, embed_dim=768, depth=48, num_heads=16, init_values=1e-6)
model = _create_cait('cait_m48_448', pretrained=pretrained, **dict(model_args, **kwargs))
return model
| pytorch-image-models/timm/models/cait.py/0 | {
"file_path": "pytorch-image-models/timm/models/cait.py",
"repo_id": "pytorch-image-models",
"token_count": 9133
} | 194 |
""" EfficientViT (by MIT Song Han's Lab)
Paper: `Efficientvit: Enhanced linear attention for high-resolution low-computation visual recognition`
- https://arxiv.org/abs/2205.14756
Adapted from official impl at https://github.com/mit-han-lab/efficientvit
"""
__all__ = ['EfficientVit']
from typing import Optional
from functools import partial
import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.nn.modules.batchnorm import _BatchNorm
from timm.data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
from timm.layers import SelectAdaptivePool2d, create_conv2d, GELUTanh
from ._builder import build_model_with_cfg
from ._features_fx import register_notrace_module
from ._manipulate import checkpoint_seq
from ._registry import register_model, generate_default_cfgs
def val2list(x: list or tuple or any, repeat_time=1):
if isinstance(x, (list, tuple)):
return list(x)
return [x for _ in range(repeat_time)]
def val2tuple(x: list or tuple or any, min_len: int = 1, idx_repeat: int = -1):
# repeat elements if necessary
x = val2list(x)
if len(x) > 0:
x[idx_repeat:idx_repeat] = [x[idx_repeat] for _ in range(min_len - len(x))]
return tuple(x)
def get_same_padding(kernel_size: int or tuple[int, ...]) -> int or tuple[int, ...]:
if isinstance(kernel_size, tuple):
return tuple([get_same_padding(ks) for ks in kernel_size])
else:
assert kernel_size % 2 > 0, "kernel size should be odd number"
return kernel_size // 2
class ConvNormAct(nn.Module):
def __init__(
self,
in_channels: int,
out_channels: int,
kernel_size=3,
stride=1,
dilation=1,
groups=1,
bias=False,
dropout=0.,
norm_layer=nn.BatchNorm2d,
act_layer=nn.ReLU,
):
super(ConvNormAct, self).__init__()
self.dropout = nn.Dropout(dropout, inplace=False)
self.conv = create_conv2d(
in_channels,
out_channels,
kernel_size=kernel_size,
stride=stride,
dilation=dilation,
groups=groups,
bias=bias,
)
self.norm = norm_layer(num_features=out_channels) if norm_layer else nn.Identity()
self.act = act_layer(inplace=True) if act_layer is not None else nn.Identity()
def forward(self, x):
x = self.dropout(x)
x = self.conv(x)
x = self.norm(x)
x = self.act(x)
return x
class DSConv(nn.Module):
def __init__(
self,
in_channels: int,
out_channels: int,
kernel_size=3,
stride=1,
use_bias=False,
norm_layer=(nn.BatchNorm2d, nn.BatchNorm2d),
act_layer=(nn.ReLU6, None),
):
super(DSConv, self).__init__()
use_bias = val2tuple(use_bias, 2)
norm_layer = val2tuple(norm_layer, 2)
act_layer = val2tuple(act_layer, 2)
self.depth_conv = ConvNormAct(
in_channels,
in_channels,
kernel_size,
stride,
groups=in_channels,
norm_layer=norm_layer[0],
act_layer=act_layer[0],
bias=use_bias[0],
)
self.point_conv = ConvNormAct(
in_channels,
out_channels,
1,
norm_layer=norm_layer[1],
act_layer=act_layer[1],
bias=use_bias[1],
)
def forward(self, x):
x = self.depth_conv(x)
x = self.point_conv(x)
return x
class ConvBlock(nn.Module):
def __init__(
self,
in_channels: int,
out_channels: int,
kernel_size=3,
stride=1,
mid_channels=None,
expand_ratio=1,
use_bias=False,
norm_layer=(nn.BatchNorm2d, nn.BatchNorm2d),
act_layer=(nn.ReLU6, None),
):
super(ConvBlock, self).__init__()
use_bias = val2tuple(use_bias, 2)
norm_layer = val2tuple(norm_layer, 2)
act_layer = val2tuple(act_layer, 2)
mid_channels = mid_channels or round(in_channels * expand_ratio)
self.conv1 = ConvNormAct(
in_channels,
mid_channels,
kernel_size,
stride,
norm_layer=norm_layer[0],
act_layer=act_layer[0],
bias=use_bias[0],
)
self.conv2 = ConvNormAct(
mid_channels,
out_channels,
kernel_size,
1,
norm_layer=norm_layer[1],
act_layer=act_layer[1],
bias=use_bias[1],
)
def forward(self, x):
x = self.conv1(x)
x = self.conv2(x)
return x
class MBConv(nn.Module):
def __init__(
self,
in_channels: int,
out_channels: int,
kernel_size=3,
stride=1,
mid_channels=None,
expand_ratio=6,
use_bias=False,
norm_layer=(nn.BatchNorm2d, nn.BatchNorm2d, nn.BatchNorm2d),
act_layer=(nn.ReLU6, nn.ReLU6, None),
):
super(MBConv, self).__init__()
use_bias = val2tuple(use_bias, 3)
norm_layer = val2tuple(norm_layer, 3)
act_layer = val2tuple(act_layer, 3)
mid_channels = mid_channels or round(in_channels * expand_ratio)
self.inverted_conv = ConvNormAct(
in_channels,
mid_channels,
1,
stride=1,
norm_layer=norm_layer[0],
act_layer=act_layer[0],
bias=use_bias[0],
)
self.depth_conv = ConvNormAct(
mid_channels,
mid_channels,
kernel_size,
stride=stride,
groups=mid_channels,
norm_layer=norm_layer[1],
act_layer=act_layer[1],
bias=use_bias[1],
)
self.point_conv = ConvNormAct(
mid_channels,
out_channels,
1,
norm_layer=norm_layer[2],
act_layer=act_layer[2],
bias=use_bias[2],
)
def forward(self, x):
x = self.inverted_conv(x)
x = self.depth_conv(x)
x = self.point_conv(x)
return x
class FusedMBConv(nn.Module):
def __init__(
self,
in_channels: int,
out_channels: int,
kernel_size=3,
stride=1,
mid_channels=None,
expand_ratio=6,
groups=1,
use_bias=False,
norm_layer=(nn.BatchNorm2d, nn.BatchNorm2d),
act_layer=(nn.ReLU6, None),
):
super(FusedMBConv, self).__init__()
use_bias = val2tuple(use_bias, 2)
norm_layer = val2tuple(norm_layer, 2)
act_layer = val2tuple(act_layer, 2)
mid_channels = mid_channels or round(in_channels * expand_ratio)
self.spatial_conv = ConvNormAct(
in_channels,
mid_channels,
kernel_size,
stride=stride,
groups=groups,
norm_layer=norm_layer[0],
act_layer=act_layer[0],
bias=use_bias[0],
)
self.point_conv = ConvNormAct(
mid_channels,
out_channels,
1,
norm_layer=norm_layer[1],
act_layer=act_layer[1],
bias=use_bias[1],
)
def forward(self, x):
x = self.spatial_conv(x)
x = self.point_conv(x)
return x
class LiteMLA(nn.Module):
"""Lightweight multi-scale linear attention"""
def __init__(
self,
in_channels: int,
out_channels: int,
heads: int or None = None,
heads_ratio: float = 1.0,
dim=8,
use_bias=False,
norm_layer=(None, nn.BatchNorm2d),
act_layer=(None, None),
kernel_func=nn.ReLU,
scales=(5,),
eps=1e-5,
):
super(LiteMLA, self).__init__()
self.eps = eps
heads = heads or int(in_channels // dim * heads_ratio)
total_dim = heads * dim
use_bias = val2tuple(use_bias, 2)
norm_layer = val2tuple(norm_layer, 2)
act_layer = val2tuple(act_layer, 2)
self.dim = dim
self.qkv = ConvNormAct(
in_channels,
3 * total_dim,
1,
bias=use_bias[0],
norm_layer=norm_layer[0],
act_layer=act_layer[0],
)
self.aggreg = nn.ModuleList([
nn.Sequential(
nn.Conv2d(
3 * total_dim,
3 * total_dim,
scale,
padding=get_same_padding(scale),
groups=3 * total_dim,
bias=use_bias[0],
),
nn.Conv2d(3 * total_dim, 3 * total_dim, 1, groups=3 * heads, bias=use_bias[0]),
)
for scale in scales
])
self.kernel_func = kernel_func(inplace=False)
self.proj = ConvNormAct(
total_dim * (1 + len(scales)),
out_channels,
1,
bias=use_bias[1],
norm_layer=norm_layer[1],
act_layer=act_layer[1],
)
def _attn(self, q, k, v):
dtype = v.dtype
q, k, v = q.float(), k.float(), v.float()
kv = k.transpose(-1, -2) @ v
out = q @ kv
out = out[..., :-1] / (out[..., -1:] + self.eps)
return out.to(dtype)
def forward(self, x):
B, _, H, W = x.shape
# generate multi-scale q, k, v
qkv = self.qkv(x)
multi_scale_qkv = [qkv]
for op in self.aggreg:
multi_scale_qkv.append(op(qkv))
multi_scale_qkv = torch.cat(multi_scale_qkv, dim=1)
multi_scale_qkv = multi_scale_qkv.reshape(B, -1, 3 * self.dim, H * W).transpose(-1, -2)
q, k, v = multi_scale_qkv.chunk(3, dim=-1)
# lightweight global attention
q = self.kernel_func(q)
k = self.kernel_func(k)
v = F.pad(v, (0, 1), mode="constant", value=1.)
if not torch.jit.is_scripting():
with torch.autocast(device_type=v.device.type, enabled=False):
out = self._attn(q, k, v)
else:
out = self._attn(q, k, v)
# final projection
out = out.transpose(-1, -2).reshape(B, -1, H, W)
out = self.proj(out)
return out
register_notrace_module(LiteMLA)
class EfficientVitBlock(nn.Module):
def __init__(
self,
in_channels,
heads_ratio=1.0,
head_dim=32,
expand_ratio=4,
norm_layer=nn.BatchNorm2d,
act_layer=nn.Hardswish,
):
super(EfficientVitBlock, self).__init__()
self.context_module = ResidualBlock(
LiteMLA(
in_channels=in_channels,
out_channels=in_channels,
heads_ratio=heads_ratio,
dim=head_dim,
norm_layer=(None, norm_layer),
),
nn.Identity(),
)
self.local_module = ResidualBlock(
MBConv(
in_channels=in_channels,
out_channels=in_channels,
expand_ratio=expand_ratio,
use_bias=(True, True, False),
norm_layer=(None, None, norm_layer),
act_layer=(act_layer, act_layer, None),
),
nn.Identity(),
)
def forward(self, x):
x = self.context_module(x)
x = self.local_module(x)
return x
class ResidualBlock(nn.Module):
def __init__(
self,
main: Optional[nn.Module],
shortcut: Optional[nn.Module] = None,
pre_norm: Optional[nn.Module] = None,
):
super(ResidualBlock, self).__init__()
self.pre_norm = pre_norm if pre_norm is not None else nn.Identity()
self.main = main
self.shortcut = shortcut
def forward(self, x):
res = self.main(self.pre_norm(x))
if self.shortcut is not None:
res = res + self.shortcut(x)
return res
def build_local_block(
in_channels: int,
out_channels: int,
stride: int,
expand_ratio: float,
norm_layer: str,
act_layer: str,
fewer_norm: bool = False,
block_type: str = "default",
):
assert block_type in ["default", "large", "fused"]
if expand_ratio == 1:
if block_type == "default":
block = DSConv(
in_channels=in_channels,
out_channels=out_channels,
stride=stride,
use_bias=(True, False) if fewer_norm else False,
norm_layer=(None, norm_layer) if fewer_norm else norm_layer,
act_layer=(act_layer, None),
)
else:
block = ConvBlock(
in_channels=in_channels,
out_channels=out_channels,
stride=stride,
use_bias=(True, False) if fewer_norm else False,
norm_layer=(None, norm_layer) if fewer_norm else norm_layer,
act_layer=(act_layer, None),
)
else:
if block_type == "default":
block = MBConv(
in_channels=in_channels,
out_channels=out_channels,
stride=stride,
expand_ratio=expand_ratio,
use_bias=(True, True, False) if fewer_norm else False,
norm_layer=(None, None, norm_layer) if fewer_norm else norm_layer,
act_layer=(act_layer, act_layer, None),
)
else:
block = FusedMBConv(
in_channels=in_channels,
out_channels=out_channels,
stride=stride,
expand_ratio=expand_ratio,
use_bias=(True, False) if fewer_norm else False,
norm_layer=(None, norm_layer) if fewer_norm else norm_layer,
act_layer=(act_layer, None),
)
return block
class Stem(nn.Sequential):
def __init__(self, in_chs, out_chs, depth, norm_layer, act_layer, block_type='default'):
super().__init__()
self.stride = 2
self.add_module(
'in_conv',
ConvNormAct(
in_chs, out_chs,
kernel_size=3, stride=2, norm_layer=norm_layer, act_layer=act_layer,
)
)
stem_block = 0
for _ in range(depth):
self.add_module(f'res{stem_block}', ResidualBlock(
build_local_block(
in_channels=out_chs,
out_channels=out_chs,
stride=1,
expand_ratio=1,
norm_layer=norm_layer,
act_layer=act_layer,
block_type=block_type,
),
nn.Identity(),
))
stem_block += 1
class EfficientVitStage(nn.Module):
def __init__(
self,
in_chs,
out_chs,
depth,
norm_layer,
act_layer,
expand_ratio,
head_dim,
vit_stage=False,
):
super(EfficientVitStage, self).__init__()
blocks = [ResidualBlock(
build_local_block(
in_channels=in_chs,
out_channels=out_chs,
stride=2,
expand_ratio=expand_ratio,
norm_layer=norm_layer,
act_layer=act_layer,
fewer_norm=vit_stage,
),
None,
)]
in_chs = out_chs
if vit_stage:
# for stage 3, 4
for _ in range(depth):
blocks.append(
EfficientVitBlock(
in_channels=in_chs,
head_dim=head_dim,
expand_ratio=expand_ratio,
norm_layer=norm_layer,
act_layer=act_layer,
)
)
else:
# for stage 1, 2
for i in range(1, depth):
blocks.append(ResidualBlock(
build_local_block(
in_channels=in_chs,
out_channels=out_chs,
stride=1,
expand_ratio=expand_ratio,
norm_layer=norm_layer,
act_layer=act_layer
),
nn.Identity(),
))
self.blocks = nn.Sequential(*blocks)
def forward(self, x):
return self.blocks(x)
class EfficientVitLargeStage(nn.Module):
def __init__(
self,
in_chs,
out_chs,
depth,
norm_layer,
act_layer,
head_dim,
vit_stage=False,
fewer_norm=False,
):
super(EfficientVitLargeStage, self).__init__()
blocks = [ResidualBlock(
build_local_block(
in_channels=in_chs,
out_channels=out_chs,
stride=2,
expand_ratio=24 if vit_stage else 16,
norm_layer=norm_layer,
act_layer=act_layer,
fewer_norm=vit_stage or fewer_norm,
block_type='default' if fewer_norm else 'fused',
),
None,
)]
in_chs = out_chs
if vit_stage:
# for stage 4
for _ in range(depth):
blocks.append(
EfficientVitBlock(
in_channels=in_chs,
head_dim=head_dim,
expand_ratio=6,
norm_layer=norm_layer,
act_layer=act_layer,
)
)
else:
# for stage 1, 2, 3
for i in range(depth):
blocks.append(ResidualBlock(
build_local_block(
in_channels=in_chs,
out_channels=out_chs,
stride=1,
expand_ratio=4,
norm_layer=norm_layer,
act_layer=act_layer,
fewer_norm=fewer_norm,
block_type='default' if fewer_norm else 'fused',
),
nn.Identity(),
))
self.blocks = nn.Sequential(*blocks)
def forward(self, x):
return self.blocks(x)
class ClassifierHead(nn.Module):
def __init__(
self,
in_channels,
widths,
n_classes=1000,
dropout=0.,
norm_layer=nn.BatchNorm2d,
act_layer=nn.Hardswish,
global_pool='avg',
norm_eps=1e-5,
):
super(ClassifierHead, self).__init__()
self.in_conv = ConvNormAct(in_channels, widths[0], 1, norm_layer=norm_layer, act_layer=act_layer)
self.global_pool = SelectAdaptivePool2d(pool_type=global_pool, flatten=True, input_fmt='NCHW')
self.classifier = nn.Sequential(
nn.Linear(widths[0], widths[1], bias=False),
nn.LayerNorm(widths[1], eps=norm_eps),
act_layer(inplace=True) if act_layer is not None else nn.Identity(),
nn.Dropout(dropout, inplace=False),
nn.Linear(widths[1], n_classes, bias=True),
)
def forward(self, x, pre_logits: bool = False):
x = self.in_conv(x)
x = self.global_pool(x)
if pre_logits:
return x
x = self.classifier(x)
return x
class EfficientVit(nn.Module):
def __init__(
self,
in_chans=3,
widths=(),
depths=(),
head_dim=32,
expand_ratio=4,
norm_layer=nn.BatchNorm2d,
act_layer=nn.Hardswish,
global_pool='avg',
head_widths=(),
drop_rate=0.0,
num_classes=1000,
):
super(EfficientVit, self).__init__()
self.grad_checkpointing = False
self.global_pool = global_pool
self.num_classes = num_classes
# input stem
self.stem = Stem(in_chans, widths[0], depths[0], norm_layer, act_layer)
stride = self.stem.stride
# stages
self.feature_info = []
self.stages = nn.Sequential()
in_channels = widths[0]
for i, (w, d) in enumerate(zip(widths[1:], depths[1:])):
self.stages.append(EfficientVitStage(
in_channels,
w,
depth=d,
norm_layer=norm_layer,
act_layer=act_layer,
expand_ratio=expand_ratio,
head_dim=head_dim,
vit_stage=i >= 2,
))
stride *= 2
in_channels = w
self.feature_info += [dict(num_chs=in_channels, reduction=stride, module=f'stages.{i}')]
self.num_features = in_channels
self.head_widths = head_widths
self.head_dropout = drop_rate
if num_classes > 0:
self.head = ClassifierHead(
self.num_features,
self.head_widths,
n_classes=num_classes,
dropout=self.head_dropout,
global_pool=self.global_pool,
)
else:
if self.global_pool == 'avg':
self.head = SelectAdaptivePool2d(pool_type=global_pool, flatten=True)
else:
self.head = nn.Identity()
@torch.jit.ignore
def group_matcher(self, coarse=False):
matcher = dict(
stem=r'^stem',
blocks=r'^stages\.(\d+)' if coarse else [
(r'^stages\.(\d+).downsample', (0,)),
(r'^stages\.(\d+)\.\w+\.(\d+)', None),
]
)
return matcher
@torch.jit.ignore
def set_grad_checkpointing(self, enable=True):
self.grad_checkpointing = enable
@torch.jit.ignore
def get_classifier(self):
return self.head.classifier[-1]
def reset_classifier(self, num_classes, global_pool=None):
self.num_classes = num_classes
if global_pool is not None:
self.global_pool = global_pool
if num_classes > 0:
self.head = ClassifierHead(
self.num_features,
self.head_widths,
n_classes=num_classes,
dropout=self.head_dropout,
global_pool=self.global_pool,
)
else:
if self.global_pool == 'avg':
self.head = SelectAdaptivePool2d(pool_type=self.global_pool, flatten=True)
else:
self.head = nn.Identity()
def forward_features(self, x):
x = self.stem(x)
if self.grad_checkpointing and not torch.jit.is_scripting():
x = checkpoint_seq(self.stages, x)
else:
x = self.stages(x)
return x
def forward_head(self, x, pre_logits: bool = False):
return self.head(x, pre_logits=pre_logits) if pre_logits else self.head(x)
def forward(self, x):
x = self.forward_features(x)
x = self.forward_head(x)
return x
class EfficientVitLarge(nn.Module):
def __init__(
self,
in_chans=3,
widths=(),
depths=(),
head_dim=32,
norm_layer=nn.BatchNorm2d,
act_layer=GELUTanh,
global_pool='avg',
head_widths=(),
drop_rate=0.0,
num_classes=1000,
norm_eps=1e-7,
):
super(EfficientVitLarge, self).__init__()
self.grad_checkpointing = False
self.global_pool = global_pool
self.num_classes = num_classes
self.norm_eps = norm_eps
norm_layer = partial(norm_layer, eps=self.norm_eps)
# input stem
self.stem = Stem(in_chans, widths[0], depths[0], norm_layer, act_layer, block_type='large')
stride = self.stem.stride
# stages
self.feature_info = []
self.stages = nn.Sequential()
in_channels = widths[0]
for i, (w, d) in enumerate(zip(widths[1:], depths[1:])):
self.stages.append(EfficientVitLargeStage(
in_channels,
w,
depth=d,
norm_layer=norm_layer,
act_layer=act_layer,
head_dim=head_dim,
vit_stage=i >= 3,
fewer_norm=i >= 2,
))
stride *= 2
in_channels = w
self.feature_info += [dict(num_chs=in_channels, reduction=stride, module=f'stages.{i}')]
self.num_features = in_channels
self.head_widths = head_widths
self.head_dropout = drop_rate
if num_classes > 0:
self.head = ClassifierHead(
self.num_features,
self.head_widths,
n_classes=num_classes,
dropout=self.head_dropout,
global_pool=self.global_pool,
act_layer=act_layer,
norm_eps=self.norm_eps,
)
else:
if self.global_pool == 'avg':
self.head = SelectAdaptivePool2d(pool_type=global_pool, flatten=True)
else:
self.head = nn.Identity()
@torch.jit.ignore
def group_matcher(self, coarse=False):
matcher = dict(
stem=r'^stem',
blocks=r'^stages\.(\d+)' if coarse else [
(r'^stages\.(\d+).downsample', (0,)),
(r'^stages\.(\d+)\.\w+\.(\d+)', None),
]
)
return matcher
@torch.jit.ignore
def set_grad_checkpointing(self, enable=True):
self.grad_checkpointing = enable
@torch.jit.ignore
def get_classifier(self):
return self.head.classifier[-1]
def reset_classifier(self, num_classes, global_pool=None):
self.num_classes = num_classes
if global_pool is not None:
self.global_pool = global_pool
if num_classes > 0:
self.head = ClassifierHead(
self.num_features,
self.head_widths,
n_classes=num_classes,
dropout=self.head_dropout,
global_pool=self.global_pool,
norm_eps=self.norm_eps
)
else:
if self.global_pool == 'avg':
self.head = SelectAdaptivePool2d(pool_type=self.global_pool, flatten=True)
else:
self.head = nn.Identity()
def forward_features(self, x):
x = self.stem(x)
if self.grad_checkpointing and not torch.jit.is_scripting():
x = checkpoint_seq(self.stages, x)
else:
x = self.stages(x)
return x
def forward_head(self, x, pre_logits: bool = False):
return self.head(x, pre_logits=pre_logits) if pre_logits else self.head(x)
def forward(self, x):
x = self.forward_features(x)
x = self.forward_head(x)
return x
def _cfg(url='', **kwargs):
return {
'url': url,
'num_classes': 1000,
'mean': IMAGENET_DEFAULT_MEAN,
'std': IMAGENET_DEFAULT_STD,
'first_conv': 'stem.in_conv.conv',
'classifier': 'head.classifier.4',
'crop_pct': 0.95,
'input_size': (3, 224, 224),
'pool_size': (7, 7),
**kwargs,
}
default_cfgs = generate_default_cfgs({
'efficientvit_b0.r224_in1k': _cfg(
hf_hub_id='timm/',
),
'efficientvit_b1.r224_in1k': _cfg(
hf_hub_id='timm/',
),
'efficientvit_b1.r256_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 256, 256), pool_size=(8, 8), crop_pct=1.0,
),
'efficientvit_b1.r288_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 288, 288), pool_size=(9, 9), crop_pct=1.0,
),
'efficientvit_b2.r224_in1k': _cfg(
hf_hub_id='timm/',
),
'efficientvit_b2.r256_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 256, 256), pool_size=(8, 8), crop_pct=1.0,
),
'efficientvit_b2.r288_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 288, 288), pool_size=(9, 9), crop_pct=1.0,
),
'efficientvit_b3.r224_in1k': _cfg(
hf_hub_id='timm/',
),
'efficientvit_b3.r256_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 256, 256), pool_size=(8, 8), crop_pct=1.0,
),
'efficientvit_b3.r288_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 288, 288), pool_size=(9, 9), crop_pct=1.0,
),
'efficientvit_l1.r224_in1k': _cfg(
hf_hub_id='timm/',
crop_pct=1.0,
),
'efficientvit_l2.r224_in1k': _cfg(
hf_hub_id='timm/',
crop_pct=1.0,
),
'efficientvit_l2.r256_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 256, 256), pool_size=(8, 8), crop_pct=1.0,
),
'efficientvit_l2.r288_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 288, 288), pool_size=(9, 9), crop_pct=1.0,
),
'efficientvit_l2.r384_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 384, 384), pool_size=(12, 12), crop_pct=1.0,
),
'efficientvit_l3.r224_in1k': _cfg(
hf_hub_id='timm/',
crop_pct=1.0,
),
'efficientvit_l3.r256_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 256, 256), pool_size=(8, 8), crop_pct=1.0,
),
'efficientvit_l3.r320_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 320, 320), pool_size=(10, 10), crop_pct=1.0,
),
'efficientvit_l3.r384_in1k': _cfg(
hf_hub_id='timm/',
input_size=(3, 384, 384), pool_size=(12, 12), crop_pct=1.0,
),
# 'efficientvit_l0_sam.sam': _cfg(
# # hf_hub_id='timm/',
# input_size=(3, 512, 512), crop_pct=1.0,
# num_classes=0,
# ),
# 'efficientvit_l1_sam.sam': _cfg(
# # hf_hub_id='timm/',
# input_size=(3, 512, 512), crop_pct=1.0,
# num_classes=0,
# ),
# 'efficientvit_l2_sam.sam': _cfg(
# # hf_hub_id='timm/',f
# input_size=(3, 512, 512), crop_pct=1.0,
# num_classes=0,
# ),
})
def _create_efficientvit(variant, pretrained=False, **kwargs):
out_indices = kwargs.pop('out_indices', (0, 1, 2, 3))
model = build_model_with_cfg(
EfficientVit,
variant,
pretrained,
feature_cfg=dict(flatten_sequential=True, out_indices=out_indices),
**kwargs
)
return model
def _create_efficientvit_large(variant, pretrained=False, **kwargs):
out_indices = kwargs.pop('out_indices', (0, 1, 2, 3))
model = build_model_with_cfg(
EfficientVitLarge,
variant,
pretrained,
feature_cfg=dict(flatten_sequential=True, out_indices=out_indices),
**kwargs
)
return model
@register_model
def efficientvit_b0(pretrained=False, **kwargs):
model_args = dict(
widths=(8, 16, 32, 64, 128), depths=(1, 2, 2, 2, 2), head_dim=16, head_widths=(1024, 1280))
return _create_efficientvit('efficientvit_b0', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_b1(pretrained=False, **kwargs):
model_args = dict(
widths=(16, 32, 64, 128, 256), depths=(1, 2, 3, 3, 4), head_dim=16, head_widths=(1536, 1600))
return _create_efficientvit('efficientvit_b1', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_b2(pretrained=False, **kwargs):
model_args = dict(
widths=(24, 48, 96, 192, 384), depths=(1, 3, 4, 4, 6), head_dim=32, head_widths=(2304, 2560))
return _create_efficientvit('efficientvit_b2', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_b3(pretrained=False, **kwargs):
model_args = dict(
widths=(32, 64, 128, 256, 512), depths=(1, 4, 6, 6, 9), head_dim=32, head_widths=(2304, 2560))
return _create_efficientvit('efficientvit_b3', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_l1(pretrained=False, **kwargs):
model_args = dict(
widths=(32, 64, 128, 256, 512), depths=(1, 1, 1, 6, 6), head_dim=32, head_widths=(3072, 3200))
return _create_efficientvit_large('efficientvit_l1', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_l2(pretrained=False, **kwargs):
model_args = dict(
widths=(32, 64, 128, 256, 512), depths=(1, 2, 2, 8, 8), head_dim=32, head_widths=(3072, 3200))
return _create_efficientvit_large('efficientvit_l2', pretrained=pretrained, **dict(model_args, **kwargs))
@register_model
def efficientvit_l3(pretrained=False, **kwargs):
model_args = dict(
widths=(64, 128, 256, 512, 1024), depths=(1, 2, 2, 8, 8), head_dim=32, head_widths=(6144, 6400))
return _create_efficientvit_large('efficientvit_l3', pretrained=pretrained, **dict(model_args, **kwargs))
# FIXME will wait for v2 SAM models which are pending
# @register_model
# def efficientvit_l0_sam(pretrained=False, **kwargs):
# # only backbone for segment-anything-model weights
# model_args = dict(
# widths=(32, 64, 128, 256, 512), depths=(1, 1, 1, 4, 4), head_dim=32, num_classes=0, norm_eps=1e-6)
# return _create_efficientvit_large('efficientvit_l0_sam', pretrained=pretrained, **dict(model_args, **kwargs))
#
#
# @register_model
# def efficientvit_l1_sam(pretrained=False, **kwargs):
# # only backbone for segment-anything-model weights
# model_args = dict(
# widths=(32, 64, 128, 256, 512), depths=(1, 1, 1, 6, 6), head_dim=32, num_classes=0, norm_eps=1e-6)
# return _create_efficientvit_large('efficientvit_l1_sam', pretrained=pretrained, **dict(model_args, **kwargs))
#
#
# @register_model
# def efficientvit_l2_sam(pretrained=False, **kwargs):
# # only backbone for segment-anything-model weights
# model_args = dict(
# widths=(32, 64, 128, 256, 512), depths=(1, 2, 2, 8, 8), head_dim=32, num_classes=0, norm_eps=1e-6)
# return _create_efficientvit_large('efficientvit_l2_sam', pretrained=pretrained, **dict(model_args, **kwargs))
| pytorch-image-models/timm/models/efficientvit_mit.py/0 | {
"file_path": "pytorch-image-models/timm/models/efficientvit_mit.py",
"repo_id": "pytorch-image-models",
"token_count": 18668
} | 195 |
""" Inception-V3
Originally from torchvision Inception3 model
Licensed BSD-Clause 3 https://github.com/pytorch/vision/blob/master/LICENSE
"""
from functools import partial
import torch
import torch.nn as nn
import torch.nn.functional as F
from timm.data import IMAGENET_DEFAULT_STD, IMAGENET_DEFAULT_MEAN, IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
from timm.layers import trunc_normal_, create_classifier, Linear, ConvNormAct
from ._builder import build_model_with_cfg
from ._builder import resolve_pretrained_cfg
from ._manipulate import flatten_modules
from ._registry import register_model, generate_default_cfgs, register_model_deprecations
__all__ = ['InceptionV3'] # model_registry will add each entrypoint fn to this
class InceptionA(nn.Module):
def __init__(self, in_channels, pool_features, conv_block=None):
super(InceptionA, self).__init__()
conv_block = conv_block or ConvNormAct
self.branch1x1 = conv_block(in_channels, 64, kernel_size=1)
self.branch5x5_1 = conv_block(in_channels, 48, kernel_size=1)
self.branch5x5_2 = conv_block(48, 64, kernel_size=5, padding=2)
self.branch3x3dbl_1 = conv_block(in_channels, 64, kernel_size=1)
self.branch3x3dbl_2 = conv_block(64, 96, kernel_size=3, padding=1)
self.branch3x3dbl_3 = conv_block(96, 96, kernel_size=3, padding=1)
self.branch_pool = conv_block(in_channels, pool_features, kernel_size=1)
def _forward(self, x):
branch1x1 = self.branch1x1(x)
branch5x5 = self.branch5x5_1(x)
branch5x5 = self.branch5x5_2(branch5x5)
branch3x3dbl = self.branch3x3dbl_1(x)
branch3x3dbl = self.branch3x3dbl_2(branch3x3dbl)
branch3x3dbl = self.branch3x3dbl_3(branch3x3dbl)
branch_pool = F.avg_pool2d(x, kernel_size=3, stride=1, padding=1)
branch_pool = self.branch_pool(branch_pool)
outputs = [branch1x1, branch5x5, branch3x3dbl, branch_pool]
return outputs
def forward(self, x):
outputs = self._forward(x)
return torch.cat(outputs, 1)
class InceptionB(nn.Module):
def __init__(self, in_channels, conv_block=None):
super(InceptionB, self).__init__()
conv_block = conv_block or ConvNormAct
self.branch3x3 = conv_block(in_channels, 384, kernel_size=3, stride=2)
self.branch3x3dbl_1 = conv_block(in_channels, 64, kernel_size=1)
self.branch3x3dbl_2 = conv_block(64, 96, kernel_size=3, padding=1)
self.branch3x3dbl_3 = conv_block(96, 96, kernel_size=3, stride=2)
def _forward(self, x):
branch3x3 = self.branch3x3(x)
branch3x3dbl = self.branch3x3dbl_1(x)
branch3x3dbl = self.branch3x3dbl_2(branch3x3dbl)
branch3x3dbl = self.branch3x3dbl_3(branch3x3dbl)
branch_pool = F.max_pool2d(x, kernel_size=3, stride=2)
outputs = [branch3x3, branch3x3dbl, branch_pool]
return outputs
def forward(self, x):
outputs = self._forward(x)
return torch.cat(outputs, 1)
class InceptionC(nn.Module):
def __init__(self, in_channels, channels_7x7, conv_block=None):
super(InceptionC, self).__init__()
conv_block = conv_block or ConvNormAct
self.branch1x1 = conv_block(in_channels, 192, kernel_size=1)
c7 = channels_7x7
self.branch7x7_1 = conv_block(in_channels, c7, kernel_size=1)
self.branch7x7_2 = conv_block(c7, c7, kernel_size=(1, 7), padding=(0, 3))
self.branch7x7_3 = conv_block(c7, 192, kernel_size=(7, 1), padding=(3, 0))
self.branch7x7dbl_1 = conv_block(in_channels, c7, kernel_size=1)
self.branch7x7dbl_2 = conv_block(c7, c7, kernel_size=(7, 1), padding=(3, 0))
self.branch7x7dbl_3 = conv_block(c7, c7, kernel_size=(1, 7), padding=(0, 3))
self.branch7x7dbl_4 = conv_block(c7, c7, kernel_size=(7, 1), padding=(3, 0))
self.branch7x7dbl_5 = conv_block(c7, 192, kernel_size=(1, 7), padding=(0, 3))
self.branch_pool = conv_block(in_channels, 192, kernel_size=1)
def _forward(self, x):
branch1x1 = self.branch1x1(x)
branch7x7 = self.branch7x7_1(x)
branch7x7 = self.branch7x7_2(branch7x7)
branch7x7 = self.branch7x7_3(branch7x7)
branch7x7dbl = self.branch7x7dbl_1(x)
branch7x7dbl = self.branch7x7dbl_2(branch7x7dbl)
branch7x7dbl = self.branch7x7dbl_3(branch7x7dbl)
branch7x7dbl = self.branch7x7dbl_4(branch7x7dbl)
branch7x7dbl = self.branch7x7dbl_5(branch7x7dbl)
branch_pool = F.avg_pool2d(x, kernel_size=3, stride=1, padding=1)
branch_pool = self.branch_pool(branch_pool)
outputs = [branch1x1, branch7x7, branch7x7dbl, branch_pool]
return outputs
def forward(self, x):
outputs = self._forward(x)
return torch.cat(outputs, 1)
class InceptionD(nn.Module):
def __init__(self, in_channels, conv_block=None):
super(InceptionD, self).__init__()
conv_block = conv_block or ConvNormAct
self.branch3x3_1 = conv_block(in_channels, 192, kernel_size=1)
self.branch3x3_2 = conv_block(192, 320, kernel_size=3, stride=2)
self.branch7x7x3_1 = conv_block(in_channels, 192, kernel_size=1)
self.branch7x7x3_2 = conv_block(192, 192, kernel_size=(1, 7), padding=(0, 3))
self.branch7x7x3_3 = conv_block(192, 192, kernel_size=(7, 1), padding=(3, 0))
self.branch7x7x3_4 = conv_block(192, 192, kernel_size=3, stride=2)
def _forward(self, x):
branch3x3 = self.branch3x3_1(x)
branch3x3 = self.branch3x3_2(branch3x3)
branch7x7x3 = self.branch7x7x3_1(x)
branch7x7x3 = self.branch7x7x3_2(branch7x7x3)
branch7x7x3 = self.branch7x7x3_3(branch7x7x3)
branch7x7x3 = self.branch7x7x3_4(branch7x7x3)
branch_pool = F.max_pool2d(x, kernel_size=3, stride=2)
outputs = [branch3x3, branch7x7x3, branch_pool]
return outputs
def forward(self, x):
outputs = self._forward(x)
return torch.cat(outputs, 1)
class InceptionE(nn.Module):
def __init__(self, in_channels, conv_block=None):
super(InceptionE, self).__init__()
conv_block = conv_block or ConvNormAct
self.branch1x1 = conv_block(in_channels, 320, kernel_size=1)
self.branch3x3_1 = conv_block(in_channels, 384, kernel_size=1)
self.branch3x3_2a = conv_block(384, 384, kernel_size=(1, 3), padding=(0, 1))
self.branch3x3_2b = conv_block(384, 384, kernel_size=(3, 1), padding=(1, 0))
self.branch3x3dbl_1 = conv_block(in_channels, 448, kernel_size=1)
self.branch3x3dbl_2 = conv_block(448, 384, kernel_size=3, padding=1)
self.branch3x3dbl_3a = conv_block(384, 384, kernel_size=(1, 3), padding=(0, 1))
self.branch3x3dbl_3b = conv_block(384, 384, kernel_size=(3, 1), padding=(1, 0))
self.branch_pool = conv_block(in_channels, 192, kernel_size=1)
def _forward(self, x):
branch1x1 = self.branch1x1(x)
branch3x3 = self.branch3x3_1(x)
branch3x3 = [
self.branch3x3_2a(branch3x3),
self.branch3x3_2b(branch3x3),
]
branch3x3 = torch.cat(branch3x3, 1)
branch3x3dbl = self.branch3x3dbl_1(x)
branch3x3dbl = self.branch3x3dbl_2(branch3x3dbl)
branch3x3dbl = [
self.branch3x3dbl_3a(branch3x3dbl),
self.branch3x3dbl_3b(branch3x3dbl),
]
branch3x3dbl = torch.cat(branch3x3dbl, 1)
branch_pool = F.avg_pool2d(x, kernel_size=3, stride=1, padding=1)
branch_pool = self.branch_pool(branch_pool)
outputs = [branch1x1, branch3x3, branch3x3dbl, branch_pool]
return outputs
def forward(self, x):
outputs = self._forward(x)
return torch.cat(outputs, 1)
class InceptionAux(nn.Module):
def __init__(self, in_channels, num_classes, conv_block=None):
super(InceptionAux, self).__init__()
conv_block = conv_block or ConvNormAct
self.conv0 = conv_block(in_channels, 128, kernel_size=1)
self.conv1 = conv_block(128, 768, kernel_size=5)
self.conv1.stddev = 0.01
self.fc = Linear(768, num_classes)
self.fc.stddev = 0.001
def forward(self, x):
# N x 768 x 17 x 17
x = F.avg_pool2d(x, kernel_size=5, stride=3)
# N x 768 x 5 x 5
x = self.conv0(x)
# N x 128 x 5 x 5
x = self.conv1(x)
# N x 768 x 1 x 1
# Adaptive average pooling
x = F.adaptive_avg_pool2d(x, (1, 1))
# N x 768 x 1 x 1
x = torch.flatten(x, 1)
# N x 768
x = self.fc(x)
# N x 1000
return x
class InceptionV3(nn.Module):
"""Inception-V3
"""
aux_logits: torch.jit.Final[bool]
def __init__(
self,
num_classes=1000,
in_chans=3,
drop_rate=0.,
global_pool='avg',
aux_logits=False,
norm_layer='batchnorm2d',
norm_eps=1e-3,
act_layer='relu',
):
super(InceptionV3, self).__init__()
self.num_classes = num_classes
self.aux_logits = aux_logits
conv_block = partial(
ConvNormAct,
padding=0,
norm_layer=norm_layer,
act_layer=act_layer,
norm_kwargs=dict(eps=norm_eps),
act_kwargs=dict(inplace=True),
)
self.Conv2d_1a_3x3 = conv_block(in_chans, 32, kernel_size=3, stride=2)
self.Conv2d_2a_3x3 = conv_block(32, 32, kernel_size=3)
self.Conv2d_2b_3x3 = conv_block(32, 64, kernel_size=3, padding=1)
self.Pool1 = nn.MaxPool2d(kernel_size=3, stride=2)
self.Conv2d_3b_1x1 = conv_block(64, 80, kernel_size=1)
self.Conv2d_4a_3x3 = conv_block(80, 192, kernel_size=3)
self.Pool2 = nn.MaxPool2d(kernel_size=3, stride=2)
self.Mixed_5b = InceptionA(192, pool_features=32, conv_block=conv_block)
self.Mixed_5c = InceptionA(256, pool_features=64, conv_block=conv_block)
self.Mixed_5d = InceptionA(288, pool_features=64, conv_block=conv_block)
self.Mixed_6a = InceptionB(288, conv_block=conv_block)
self.Mixed_6b = InceptionC(768, channels_7x7=128, conv_block=conv_block)
self.Mixed_6c = InceptionC(768, channels_7x7=160, conv_block=conv_block)
self.Mixed_6d = InceptionC(768, channels_7x7=160, conv_block=conv_block)
self.Mixed_6e = InceptionC(768, channels_7x7=192, conv_block=conv_block)
if aux_logits:
self.AuxLogits = InceptionAux(768, num_classes, conv_block=conv_block)
else:
self.AuxLogits = None
self.Mixed_7a = InceptionD(768, conv_block=conv_block)
self.Mixed_7b = InceptionE(1280, conv_block=conv_block)
self.Mixed_7c = InceptionE(2048, conv_block=conv_block)
self.feature_info = [
dict(num_chs=64, reduction=2, module='Conv2d_2b_3x3'),
dict(num_chs=192, reduction=4, module='Conv2d_4a_3x3'),
dict(num_chs=288, reduction=8, module='Mixed_5d'),
dict(num_chs=768, reduction=16, module='Mixed_6e'),
dict(num_chs=2048, reduction=32, module='Mixed_7c'),
]
self.num_features = 2048
self.global_pool, self.head_drop, self.fc = create_classifier(
self.num_features,
self.num_classes,
pool_type=global_pool,
drop_rate=drop_rate,
)
for m in self.modules():
if isinstance(m, nn.Conv2d) or isinstance(m, nn.Linear):
stddev = m.stddev if hasattr(m, 'stddev') else 0.1
trunc_normal_(m.weight, std=stddev)
elif isinstance(m, nn.BatchNorm2d):
nn.init.constant_(m.weight, 1)
nn.init.constant_(m.bias, 0)
@torch.jit.ignore
def group_matcher(self, coarse=False):
module_map = {k: i for i, (k, _) in enumerate(flatten_modules(self.named_children(), prefix=()))}
module_map.pop(('fc',))
def _matcher(name):
if any([name.startswith(n) for n in ('Conv2d_1', 'Conv2d_2')]):
return 0
elif any([name.startswith(n) for n in ('Conv2d_3', 'Conv2d_4')]):
return 1
else:
for k in module_map.keys():
if k == tuple(name.split('.')[:len(k)]):
return module_map[k]
return float('inf')
return _matcher
@torch.jit.ignore
def set_grad_checkpointing(self, enable=True):
assert not enable, 'gradient checkpointing not supported'
@torch.jit.ignore
def get_classifier(self):
return self.fc
def reset_classifier(self, num_classes, global_pool='avg'):
self.num_classes = num_classes
self.global_pool, self.fc = create_classifier(self.num_features, self.num_classes, pool_type=global_pool)
def forward_preaux(self, x):
x = self.Conv2d_1a_3x3(x) # N x 32 x 149 x 149
x = self.Conv2d_2a_3x3(x) # N x 32 x 147 x 147
x = self.Conv2d_2b_3x3(x) # N x 64 x 147 x 147
x = self.Pool1(x) # N x 64 x 73 x 73
x = self.Conv2d_3b_1x1(x) # N x 80 x 73 x 73
x = self.Conv2d_4a_3x3(x) # N x 192 x 71 x 71
x = self.Pool2(x) # N x 192 x 35 x 35
x = self.Mixed_5b(x) # N x 256 x 35 x 35
x = self.Mixed_5c(x) # N x 288 x 35 x 35
x = self.Mixed_5d(x) # N x 288 x 35 x 35
x = self.Mixed_6a(x) # N x 768 x 17 x 17
x = self.Mixed_6b(x) # N x 768 x 17 x 17
x = self.Mixed_6c(x) # N x 768 x 17 x 17
x = self.Mixed_6d(x) # N x 768 x 17 x 17
x = self.Mixed_6e(x) # N x 768 x 17 x 17
return x
def forward_postaux(self, x):
x = self.Mixed_7a(x) # N x 1280 x 8 x 8
x = self.Mixed_7b(x) # N x 2048 x 8 x 8
x = self.Mixed_7c(x) # N x 2048 x 8 x 8
return x
def forward_features(self, x):
x = self.forward_preaux(x)
if self.aux_logits:
aux = self.AuxLogits(x)
x = self.forward_postaux(x)
return x, aux
x = self.forward_postaux(x)
return x
def forward_head(self, x):
x = self.global_pool(x)
x = self.head_drop(x)
x = self.fc(x)
return x
def forward(self, x):
if self.aux_logits:
x, aux = self.forward_features(x)
x = self.forward_head(x)
return x, aux
x = self.forward_features(x)
x = self.forward_head(x)
return x
def _create_inception_v3(variant, pretrained=False, **kwargs):
pretrained_cfg = resolve_pretrained_cfg(variant, pretrained_cfg=kwargs.pop('pretrained_cfg', None))
aux_logits = kwargs.get('aux_logits', False)
has_aux_logits = False
if pretrained_cfg:
# only torchvision pretrained weights have aux logits
has_aux_logits = pretrained_cfg.tag == 'tv_in1k'
if aux_logits:
assert not kwargs.pop('features_only', False)
load_strict = has_aux_logits
else:
load_strict = not has_aux_logits
return build_model_with_cfg(
InceptionV3,
variant,
pretrained,
pretrained_cfg=pretrained_cfg,
pretrained_strict=load_strict,
**kwargs,
)
def _cfg(url='', **kwargs):
return {
'url': url,
'num_classes': 1000, 'input_size': (3, 299, 299), 'pool_size': (8, 8),
'crop_pct': 0.875, 'interpolation': 'bicubic',
'mean': IMAGENET_INCEPTION_MEAN, 'std': IMAGENET_INCEPTION_STD,
'first_conv': 'Conv2d_1a_3x3.conv', 'classifier': 'fc',
**kwargs
}
default_cfgs = generate_default_cfgs({
# original PyTorch weights, ported from Tensorflow but modified
'inception_v3.tv_in1k': _cfg(
# NOTE checkpoint has aux logit layer weights
hf_hub_id='timm/',
url='https://download.pytorch.org/models/inception_v3_google-1a9a5a14.pth'),
# my port of Tensorflow SLIM weights (http://download.tensorflow.org/models/inception_v3_2016_08_28.tar.gz)
'inception_v3.tf_in1k': _cfg(hf_hub_id='timm/'),
# my port of Tensorflow adversarially trained Inception V3 from
# http://download.tensorflow.org/models/adv_inception_v3_2017_08_18.tar.gz
'inception_v3.tf_adv_in1k': _cfg(hf_hub_id='timm/'),
# from gluon pretrained models, best performing in terms of accuracy/loss metrics
# https://gluon-cv.mxnet.io/model_zoo/classification.html
'inception_v3.gluon_in1k': _cfg(
hf_hub_id='timm/',
mean=IMAGENET_DEFAULT_MEAN, # also works well with inception defaults
std=IMAGENET_DEFAULT_STD, # also works well with inception defaults
)
})
@register_model
def inception_v3(pretrained=False, **kwargs) -> InceptionV3:
model = _create_inception_v3('inception_v3', pretrained=pretrained, **kwargs)
return model
register_model_deprecations(__name__, {
'tf_inception_v3': 'inception_v3.tf_in1k',
'adv_inception_v3': 'inception_v3.tf_adv_in1k',
'gluon_inception_v3': 'inception_v3.gluon_in1k',
}) | pytorch-image-models/timm/models/inception_v3.py/0 | {
"file_path": "pytorch-image-models/timm/models/inception_v3.py",
"repo_id": "pytorch-image-models",
"token_count": 8581
} | 196 |
""" TinyViT
Paper: `TinyViT: Fast Pretraining Distillation for Small Vision Transformers`
- https://arxiv.org/abs/2207.10666
Adapted from official impl at https://github.com/microsoft/Cream/tree/main/TinyViT
"""
__all__ = ['TinyVit']
import math
import itertools
from functools import partial
from typing import Dict
import torch
import torch.nn as nn
import torch.nn.functional as F
from timm.data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
from timm.layers import LayerNorm2d, NormMlpClassifierHead, DropPath,\
trunc_normal_, resize_rel_pos_bias_table_levit, use_fused_attn
from ._builder import build_model_with_cfg
from ._features_fx import register_notrace_module
from ._manipulate import checkpoint_seq
from ._registry import register_model, generate_default_cfgs
class ConvNorm(torch.nn.Sequential):
def __init__(self, in_chs, out_chs, ks=1, stride=1, pad=0, dilation=1, groups=1, bn_weight_init=1):
super().__init__()
self.conv = nn.Conv2d(in_chs, out_chs, ks, stride, pad, dilation, groups, bias=False)
self.bn = nn.BatchNorm2d(out_chs)
torch.nn.init.constant_(self.bn.weight, bn_weight_init)
torch.nn.init.constant_(self.bn.bias, 0)
@torch.no_grad()
def fuse(self):
c, bn = self.conv, self.bn
w = bn.weight / (bn.running_var + bn.eps) ** 0.5
w = c.weight * w[:, None, None, None]
b = bn.bias - bn.running_mean * bn.weight / \
(bn.running_var + bn.eps) ** 0.5
m = torch.nn.Conv2d(
w.size(1) * self.conv.groups, w.size(0), w.shape[2:],
stride=self.conv.stride, padding=self.conv.padding, dilation=self.conv.dilation, groups=self.conv.groups)
m.weight.data.copy_(w)
m.bias.data.copy_(b)
return m
class PatchEmbed(nn.Module):
def __init__(self, in_chs, out_chs, act_layer):
super().__init__()
self.stride = 4
self.conv1 = ConvNorm(in_chs, out_chs // 2, 3, 2, 1)
self.act = act_layer()
self.conv2 = ConvNorm(out_chs // 2, out_chs, 3, 2, 1)
def forward(self, x):
x = self.conv1(x)
x = self.act(x)
x = self.conv2(x)
return x
class MBConv(nn.Module):
def __init__(self, in_chs, out_chs, expand_ratio, act_layer, drop_path):
super().__init__()
mid_chs = int(in_chs * expand_ratio)
self.conv1 = ConvNorm(in_chs, mid_chs, ks=1)
self.act1 = act_layer()
self.conv2 = ConvNorm(mid_chs, mid_chs, ks=3, stride=1, pad=1, groups=mid_chs)
self.act2 = act_layer()
self.conv3 = ConvNorm(mid_chs, out_chs, ks=1, bn_weight_init=0.0)
self.act3 = act_layer()
self.drop_path = DropPath(drop_path) if drop_path > 0. else nn.Identity()
def forward(self, x):
shortcut = x
x = self.conv1(x)
x = self.act1(x)
x = self.conv2(x)
x = self.act2(x)
x = self.conv3(x)
x = self.drop_path(x)
x += shortcut
x = self.act3(x)
return x
class PatchMerging(nn.Module):
def __init__(self, dim, out_dim, act_layer):
super().__init__()
self.conv1 = ConvNorm(dim, out_dim, 1, 1, 0)
self.act1 = act_layer()
self.conv2 = ConvNorm(out_dim, out_dim, 3, 2, 1, groups=out_dim)
self.act2 = act_layer()
self.conv3 = ConvNorm(out_dim, out_dim, 1, 1, 0)
def forward(self, x):
x = self.conv1(x)
x = self.act1(x)
x = self.conv2(x)
x = self.act2(x)
x = self.conv3(x)
return x
class ConvLayer(nn.Module):
def __init__(
self,
dim,
depth,
act_layer,
drop_path=0.,
conv_expand_ratio=4.,
):
super().__init__()
self.dim = dim
self.depth = depth
self.blocks = nn.Sequential(*[
MBConv(
dim, dim, conv_expand_ratio, act_layer,
drop_path[i] if isinstance(drop_path, list) else drop_path,
)
for i in range(depth)
])
def forward(self, x):
x = self.blocks(x)
return x
class NormMlp(nn.Module):
def __init__(
self,
in_features,
hidden_features=None,
out_features=None,
norm_layer=nn.LayerNorm,
act_layer=nn.GELU,
drop=0.,
):
super().__init__()
out_features = out_features or in_features
hidden_features = hidden_features or in_features
self.norm = norm_layer(in_features)
self.fc1 = nn.Linear(in_features, hidden_features)
self.act = act_layer()
self.drop1 = nn.Dropout(drop)
self.fc2 = nn.Linear(hidden_features, out_features)
self.drop2 = nn.Dropout(drop)
def forward(self, x):
x = self.norm(x)
x = self.fc1(x)
x = self.act(x)
x = self.drop1(x)
x = self.fc2(x)
x = self.drop2(x)
return x
class Attention(torch.nn.Module):
fused_attn: torch.jit.Final[bool]
attention_bias_cache: Dict[str, torch.Tensor]
def __init__(
self,
dim,
key_dim,
num_heads=8,
attn_ratio=4,
resolution=(14, 14),
):
super().__init__()
assert isinstance(resolution, tuple) and len(resolution) == 2
self.num_heads = num_heads
self.scale = key_dim ** -0.5
self.key_dim = key_dim
self.val_dim = int(attn_ratio * key_dim)
self.out_dim = self.val_dim * num_heads
self.attn_ratio = attn_ratio
self.resolution = resolution
self.fused_attn = use_fused_attn()
self.norm = nn.LayerNorm(dim)
self.qkv = nn.Linear(dim, num_heads * (self.val_dim + 2 * key_dim))
self.proj = nn.Linear(self.out_dim, dim)
points = list(itertools.product(range(resolution[0]), range(resolution[1])))
N = len(points)
attention_offsets = {}
idxs = []
for p1 in points:
for p2 in points:
offset = (abs(p1[0] - p2[0]), abs(p1[1] - p2[1]))
if offset not in attention_offsets:
attention_offsets[offset] = len(attention_offsets)
idxs.append(attention_offsets[offset])
self.attention_biases = torch.nn.Parameter(torch.zeros(num_heads, len(attention_offsets)))
self.register_buffer('attention_bias_idxs', torch.LongTensor(idxs).view(N, N), persistent=False)
self.attention_bias_cache = {}
@torch.no_grad()
def train(self, mode=True):
super().train(mode)
if mode and self.attention_bias_cache:
self.attention_bias_cache = {} # clear ab cache
def get_attention_biases(self, device: torch.device) -> torch.Tensor:
if torch.jit.is_tracing() or self.training:
return self.attention_biases[:, self.attention_bias_idxs]
else:
device_key = str(device)
if device_key not in self.attention_bias_cache:
self.attention_bias_cache[device_key] = self.attention_biases[:, self.attention_bias_idxs]
return self.attention_bias_cache[device_key]
def forward(self, x):
attn_bias = self.get_attention_biases(x.device)
B, N, _ = x.shape
# Normalization
x = self.norm(x)
qkv = self.qkv(x)
# (B, N, num_heads, d)
q, k, v = qkv.view(B, N, self.num_heads, -1).split([self.key_dim, self.key_dim, self.val_dim], dim=3)
# (B, num_heads, N, d)
q = q.permute(0, 2, 1, 3)
k = k.permute(0, 2, 1, 3)
v = v.permute(0, 2, 1, 3)
if self.fused_attn:
x = F.scaled_dot_product_attention(q, k, v, attn_mask=attn_bias)
else:
q = q * self.scale
attn = q @ k.transpose(-2, -1)
attn = attn + attn_bias
attn = attn.softmax(dim=-1)
x = attn @ v
x = x.transpose(1, 2).reshape(B, N, self.out_dim)
x = self.proj(x)
return x
class TinyVitBlock(nn.Module):
""" TinyViT Block.
Args:
dim (int): Number of input channels.
num_heads (int): Number of attention heads.
window_size (int): Window size.
mlp_ratio (float): Ratio of mlp hidden dim to embedding dim.
drop (float, optional): Dropout rate. Default: 0.0
drop_path (float, optional): Stochastic depth rate. Default: 0.0
local_conv_size (int): the kernel size of the convolution between
Attention and MLP. Default: 3
act_layer: the activation function. Default: nn.GELU
"""
def __init__(
self,
dim,
num_heads,
window_size=7,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
local_conv_size=3,
act_layer=nn.GELU
):
super().__init__()
self.dim = dim
self.num_heads = num_heads
assert window_size > 0, 'window_size must be greater than 0'
self.window_size = window_size
self.mlp_ratio = mlp_ratio
assert dim % num_heads == 0, 'dim must be divisible by num_heads'
head_dim = dim // num_heads
window_resolution = (window_size, window_size)
self.attn = Attention(dim, head_dim, num_heads, attn_ratio=1, resolution=window_resolution)
self.drop_path1 = DropPath(drop_path) if drop_path > 0. else nn.Identity()
self.mlp = NormMlp(
in_features=dim,
hidden_features=int(dim * mlp_ratio),
act_layer=act_layer,
drop=drop,
)
self.drop_path2 = DropPath(drop_path) if drop_path > 0. else nn.Identity()
pad = local_conv_size // 2
self.local_conv = ConvNorm(dim, dim, ks=local_conv_size, stride=1, pad=pad, groups=dim)
def forward(self, x):
B, H, W, C = x.shape
L = H * W
shortcut = x
if H == self.window_size and W == self.window_size:
x = x.reshape(B, L, C)
x = self.attn(x)
x = x.view(B, H, W, C)
else:
pad_b = (self.window_size - H % self.window_size) % self.window_size
pad_r = (self.window_size - W % self.window_size) % self.window_size
padding = pad_b > 0 or pad_r > 0
if padding:
x = F.pad(x, (0, 0, 0, pad_r, 0, pad_b))
# window partition
pH, pW = H + pad_b, W + pad_r
nH = pH // self.window_size
nW = pW // self.window_size
x = x.view(B, nH, self.window_size, nW, self.window_size, C).transpose(2, 3).reshape(
B * nH * nW, self.window_size * self.window_size, C
)
x = self.attn(x)
# window reverse
x = x.view(B, nH, nW, self.window_size, self.window_size, C).transpose(2, 3).reshape(B, pH, pW, C)
if padding:
x = x[:, :H, :W].contiguous()
x = shortcut + self.drop_path1(x)
x = x.permute(0, 3, 1, 2)
x = self.local_conv(x)
x = x.reshape(B, C, L).transpose(1, 2)
x = x + self.drop_path2(self.mlp(x))
return x.view(B, H, W, C)
def extra_repr(self) -> str:
return f"dim={self.dim}, num_heads={self.num_heads}, " \
f"window_size={self.window_size}, mlp_ratio={self.mlp_ratio}"
register_notrace_module(TinyVitBlock)
class TinyVitStage(nn.Module):
""" A basic TinyViT layer for one stage.
Args:
dim (int): Number of input channels.
out_dim: the output dimension of the layer
depth (int): Number of blocks.
num_heads (int): Number of attention heads.
window_size (int): Local window size.
mlp_ratio (float): Ratio of mlp hidden dim to embedding dim.
drop (float, optional): Dropout rate. Default: 0.0
drop_path (float | tuple[float], optional): Stochastic depth rate. Default: 0.0
downsample (nn.Module | None, optional): Downsample layer at the end of the layer. Default: None
local_conv_size: the kernel size of the depthwise convolution between attention and MLP. Default: 3
act_layer: the activation function. Default: nn.GELU
"""
def __init__(
self,
dim,
out_dim,
depth,
num_heads,
window_size,
mlp_ratio=4.,
drop=0.,
drop_path=0.,
downsample=None,
local_conv_size=3,
act_layer=nn.GELU,
):
super().__init__()
self.depth = depth
self.out_dim = out_dim
# patch merging layer
if downsample is not None:
self.downsample = downsample(
dim=dim,
out_dim=out_dim,
act_layer=act_layer,
)
else:
self.downsample = nn.Identity()
assert dim == out_dim
# build blocks
self.blocks = nn.Sequential(*[
TinyVitBlock(
dim=out_dim,
num_heads=num_heads,
window_size=window_size,
mlp_ratio=mlp_ratio,
drop=drop,
drop_path=drop_path[i] if isinstance(drop_path, list) else drop_path,
local_conv_size=local_conv_size,
act_layer=act_layer,
)
for i in range(depth)])
def forward(self, x):
x = self.downsample(x)
x = x.permute(0, 2, 3, 1) # BCHW -> BHWC
x = self.blocks(x)
x = x.permute(0, 3, 1, 2) # BHWC -> BCHW
return x
def extra_repr(self) -> str:
return f"dim={self.out_dim}, depth={self.depth}"
class TinyVit(nn.Module):
def __init__(
self,
in_chans=3,
num_classes=1000,
global_pool='avg',
embed_dims=(96, 192, 384, 768),
depths=(2, 2, 6, 2),
num_heads=(3, 6, 12, 24),
window_sizes=(7, 7, 14, 7),
mlp_ratio=4.,
drop_rate=0.,
drop_path_rate=0.1,
use_checkpoint=False,
mbconv_expand_ratio=4.0,
local_conv_size=3,
act_layer=nn.GELU,
):
super().__init__()
self.num_classes = num_classes
self.depths = depths
self.num_stages = len(depths)
self.mlp_ratio = mlp_ratio
self.grad_checkpointing = use_checkpoint
self.patch_embed = PatchEmbed(
in_chs=in_chans,
out_chs=embed_dims[0],
act_layer=act_layer,
)
# stochastic depth rate rule
dpr = [x.item() for x in torch.linspace(0, drop_path_rate, sum(depths))]
# build stages
self.stages = nn.Sequential()
stride = self.patch_embed.stride
prev_dim = embed_dims[0]
self.feature_info = []
for stage_idx in range(self.num_stages):
if stage_idx == 0:
stage = ConvLayer(
dim=prev_dim,
depth=depths[stage_idx],
act_layer=act_layer,
drop_path=dpr[:depths[stage_idx]],
conv_expand_ratio=mbconv_expand_ratio,
)
else:
out_dim = embed_dims[stage_idx]
drop_path_rate = dpr[sum(depths[:stage_idx]):sum(depths[:stage_idx + 1])]
stage = TinyVitStage(
dim=embed_dims[stage_idx - 1],
out_dim=out_dim,
depth=depths[stage_idx],
num_heads=num_heads[stage_idx],
window_size=window_sizes[stage_idx],
mlp_ratio=self.mlp_ratio,
drop=drop_rate,
local_conv_size=local_conv_size,
drop_path=drop_path_rate,
downsample=PatchMerging,
act_layer=act_layer,
)
prev_dim = out_dim
stride *= 2
self.stages.append(stage)
self.feature_info += [dict(num_chs=prev_dim, reduction=stride, module=f'stages.{stage_idx}')]
# Classifier head
self.num_features = embed_dims[-1]
norm_layer_cf = partial(LayerNorm2d, eps=1e-5)
self.head = NormMlpClassifierHead(
self.num_features,
num_classes,
pool_type=global_pool,
norm_layer=norm_layer_cf,
)
# init weights
self.apply(self._init_weights)
def _init_weights(self, m):
if isinstance(m, nn.Linear):
trunc_normal_(m.weight, std=.02)
if isinstance(m, nn.Linear) and m.bias is not None:
nn.init.constant_(m.bias, 0)
@torch.jit.ignore
def no_weight_decay_keywords(self):
return {'attention_biases'}
@torch.jit.ignore
def no_weight_decay(self):
return {x for x in self.state_dict().keys() if 'attention_biases' in x}
@torch.jit.ignore
def group_matcher(self, coarse=False):
matcher = dict(
stem=r'^patch_embed',
blocks=r'^stages\.(\d+)' if coarse else [
(r'^stages\.(\d+).downsample', (0,)),
(r'^stages\.(\d+)\.\w+\.(\d+)', None),
]
)
return matcher
@torch.jit.ignore
def set_grad_checkpointing(self, enable=True):
self.grad_checkpointing = enable
@torch.jit.ignore
def get_classifier(self):
return self.head.fc
def reset_classifier(self, num_classes, global_pool=None):
self.num_classes = num_classes
self.head.reset(num_classes, global_pool=global_pool)
def forward_features(self, x):
x = self.patch_embed(x)
if self.grad_checkpointing and not torch.jit.is_scripting():
x = checkpoint_seq(self.stages, x)
else:
x = self.stages(x)
return x
def forward_head(self, x):
x = self.head(x)
return x
def forward(self, x):
x = self.forward_features(x)
x = self.forward_head(x)
return x
def checkpoint_filter_fn(state_dict, model):
if 'model' in state_dict.keys():
state_dict = state_dict['model']
target_sd = model.state_dict()
out_dict = {}
for k, v in state_dict.items():
if k.endswith('attention_bias_idxs'):
continue
if 'attention_biases' in k:
# TODO: whether move this func into model for dynamic input resolution? (high risk)
v = resize_rel_pos_bias_table_levit(v.T, target_sd[k].shape[::-1]).T
out_dict[k] = v
return out_dict
def _cfg(url='', **kwargs):
return {
'url': url,
'num_classes': 1000,
'mean': IMAGENET_DEFAULT_MEAN,
'std': IMAGENET_DEFAULT_STD,
'first_conv': 'patch_embed.conv1.conv',
'classifier': 'head.fc',
'pool_size': (7, 7),
'input_size': (3, 224, 224),
'crop_pct': 0.95,
**kwargs,
}
default_cfgs = generate_default_cfgs({
'tiny_vit_5m_224.dist_in22k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_5m_22k_distill.pth',
num_classes=21841
),
'tiny_vit_5m_224.dist_in22k_ft_in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_5m_22kto1k_distill.pth'
),
'tiny_vit_5m_224.in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_5m_1k.pth'
),
'tiny_vit_11m_224.dist_in22k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_11m_22k_distill.pth',
num_classes=21841
),
'tiny_vit_11m_224.dist_in22k_ft_in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_11m_22kto1k_distill.pth'
),
'tiny_vit_11m_224.in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_11m_1k.pth'
),
'tiny_vit_21m_224.dist_in22k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_21m_22k_distill.pth',
num_classes=21841
),
'tiny_vit_21m_224.dist_in22k_ft_in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_21m_22kto1k_distill.pth'
),
'tiny_vit_21m_224.in1k': _cfg(
hf_hub_id='timm/',
#url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_21m_1k.pth'
),
'tiny_vit_21m_384.dist_in22k_ft_in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_21m_22kto1k_384_distill.pth',
input_size=(3, 384, 384), pool_size=(12, 12), crop_pct=1.0,
),
'tiny_vit_21m_512.dist_in22k_ft_in1k': _cfg(
hf_hub_id='timm/',
# url='https://github.com/wkcn/TinyViT-model-zoo/releases/download/checkpoints/tiny_vit_21m_22kto1k_512_distill.pth',
input_size=(3, 512, 512), pool_size=(16, 16), crop_pct=1.0, crop_mode='squash',
),
})
def _create_tiny_vit(variant, pretrained=False, **kwargs):
out_indices = kwargs.pop('out_indices', (0, 1, 2, 3))
model = build_model_with_cfg(
TinyVit,
variant,
pretrained,
feature_cfg=dict(flatten_sequential=True, out_indices=out_indices),
pretrained_filter_fn=checkpoint_filter_fn,
**kwargs
)
return model
@register_model
def tiny_vit_5m_224(pretrained=False, **kwargs):
model_kwargs = dict(
embed_dims=[64, 128, 160, 320],
depths=[2, 2, 6, 2],
num_heads=[2, 4, 5, 10],
window_sizes=[7, 7, 14, 7],
drop_path_rate=0.0,
)
model_kwargs.update(kwargs)
return _create_tiny_vit('tiny_vit_5m_224', pretrained, **model_kwargs)
@register_model
def tiny_vit_11m_224(pretrained=False, **kwargs):
model_kwargs = dict(
embed_dims=[64, 128, 256, 448],
depths=[2, 2, 6, 2],
num_heads=[2, 4, 8, 14],
window_sizes=[7, 7, 14, 7],
drop_path_rate=0.1,
)
model_kwargs.update(kwargs)
return _create_tiny_vit('tiny_vit_11m_224', pretrained, **model_kwargs)
@register_model
def tiny_vit_21m_224(pretrained=False, **kwargs):
model_kwargs = dict(
embed_dims=[96, 192, 384, 576],
depths=[2, 2, 6, 2],
num_heads=[3, 6, 12, 18],
window_sizes=[7, 7, 14, 7],
drop_path_rate=0.2,
)
model_kwargs.update(kwargs)
return _create_tiny_vit('tiny_vit_21m_224', pretrained, **model_kwargs)
@register_model
def tiny_vit_21m_384(pretrained=False, **kwargs):
model_kwargs = dict(
embed_dims=[96, 192, 384, 576],
depths=[2, 2, 6, 2],
num_heads=[3, 6, 12, 18],
window_sizes=[12, 12, 24, 12],
drop_path_rate=0.1,
)
model_kwargs.update(kwargs)
return _create_tiny_vit('tiny_vit_21m_384', pretrained, **model_kwargs)
@register_model
def tiny_vit_21m_512(pretrained=False, **kwargs):
model_kwargs = dict(
embed_dims=[96, 192, 384, 576],
depths=[2, 2, 6, 2],
num_heads=[3, 6, 12, 18],
window_sizes=[16, 16, 32, 16],
drop_path_rate=0.1,
)
model_kwargs.update(kwargs)
return _create_tiny_vit('tiny_vit_21m_512', pretrained, **model_kwargs)
| pytorch-image-models/timm/models/tiny_vit.py/0 | {
"file_path": "pytorch-image-models/timm/models/tiny_vit.py",
"repo_id": "pytorch-image-models",
"token_count": 12415
} | 197 |
import math
import torch
from torch.optim.optimizer import Optimizer
class AdaBelief(Optimizer):
r"""Implements AdaBelief algorithm. Modified from Adam in PyTorch
Arguments:
params (iterable): iterable of parameters to optimize or dicts defining
parameter groups
lr (float, optional): learning rate (default: 1e-3)
betas (Tuple[float, float], optional): coefficients used for computing
running averages of gradient and its square (default: (0.9, 0.999))
eps (float, optional): term added to the denominator to improve
numerical stability (default: 1e-16)
weight_decay (float, optional): weight decay (L2 penalty) (default: 0)
amsgrad (boolean, optional): whether to use the AMSGrad variant of this
algorithm from the paper `On the Convergence of Adam and Beyond`_
(default: False)
decoupled_decay (boolean, optional): (default: True) If set as True, then
the optimizer uses decoupled weight decay as in AdamW
fixed_decay (boolean, optional): (default: False) This is used when weight_decouple
is set as True.
When fixed_decay == True, the weight decay is performed as
$W_{new} = W_{old} - W_{old} \times decay$.
When fixed_decay == False, the weight decay is performed as
$W_{new} = W_{old} - W_{old} \times decay \times lr$. Note that in this case, the
weight decay ratio decreases with learning rate (lr).
rectify (boolean, optional): (default: True) If set as True, then perform the rectified
update similar to RAdam
degenerated_to_sgd (boolean, optional) (default:True) If set as True, then perform SGD update
when variance of gradient is high
reference: AdaBelief Optimizer, adapting stepsizes by the belief in observed gradients, NeurIPS 2020
For a complete table of recommended hyperparameters, see https://github.com/juntang-zhuang/Adabelief-Optimizer'
For example train/args for EfficientNet see these gists
- link to train_scipt: https://gist.github.com/juntang-zhuang/0a501dd51c02278d952cf159bc233037
- link to args.yaml: https://gist.github.com/juntang-zhuang/517ce3c27022b908bb93f78e4f786dc3
"""
def __init__(
self, params, lr=1e-3, betas=(0.9, 0.999), eps=1e-16, weight_decay=0, amsgrad=False,
decoupled_decay=True, fixed_decay=False, rectify=True, degenerated_to_sgd=True):
if not 0.0 <= lr:
raise ValueError("Invalid learning rate: {}".format(lr))
if not 0.0 <= eps:
raise ValueError("Invalid epsilon value: {}".format(eps))
if not 0.0 <= betas[0] < 1.0:
raise ValueError("Invalid beta parameter at index 0: {}".format(betas[0]))
if not 0.0 <= betas[1] < 1.0:
raise ValueError("Invalid beta parameter at index 1: {}".format(betas[1]))
if isinstance(params, (list, tuple)) and len(params) > 0 and isinstance(params[0], dict):
for param in params:
if 'betas' in param and (param['betas'][0] != betas[0] or param['betas'][1] != betas[1]):
param['buffer'] = [[None, None, None] for _ in range(10)]
defaults = dict(
lr=lr, betas=betas, eps=eps, weight_decay=weight_decay, amsgrad=amsgrad,
degenerated_to_sgd=degenerated_to_sgd, decoupled_decay=decoupled_decay, rectify=rectify,
fixed_decay=fixed_decay, buffer=[[None, None, None] for _ in range(10)])
super(AdaBelief, self).__init__(params, defaults)
def __setstate__(self, state):
super(AdaBelief, self).__setstate__(state)
for group in self.param_groups:
group.setdefault('amsgrad', False)
@torch.no_grad()
def reset(self):
for group in self.param_groups:
for p in group['params']:
state = self.state[p]
amsgrad = group['amsgrad']
# State initialization
state['step'] = 0
# Exponential moving average of gradient values
state['exp_avg'] = torch.zeros_like(p)
# Exponential moving average of squared gradient values
state['exp_avg_var'] = torch.zeros_like(p)
if amsgrad:
# Maintains max of all exp. moving avg. of sq. grad. values
state['max_exp_avg_var'] = torch.zeros_like(p)
@torch.no_grad()
def step(self, closure=None):
"""Performs a single optimization step.
Arguments:
closure (callable, optional): A closure that reevaluates the model
and returns the loss.
"""
loss = None
if closure is not None:
with torch.enable_grad():
loss = closure()
for group in self.param_groups:
for p in group['params']:
if p.grad is None:
continue
grad = p.grad
if grad.dtype in {torch.float16, torch.bfloat16}:
grad = grad.float()
if grad.is_sparse:
raise RuntimeError(
'AdaBelief does not support sparse gradients, please consider SparseAdam instead')
p_fp32 = p
if p.dtype in {torch.float16, torch.bfloat16}:
p_fp32 = p_fp32.float()
amsgrad = group['amsgrad']
beta1, beta2 = group['betas']
state = self.state[p]
# State initialization
if len(state) == 0:
state['step'] = 0
# Exponential moving average of gradient values
state['exp_avg'] = torch.zeros_like(p_fp32)
# Exponential moving average of squared gradient values
state['exp_avg_var'] = torch.zeros_like(p_fp32)
if amsgrad:
# Maintains max of all exp. moving avg. of sq. grad. values
state['max_exp_avg_var'] = torch.zeros_like(p_fp32)
# perform weight decay, check if decoupled weight decay
if group['decoupled_decay']:
if not group['fixed_decay']:
p_fp32.mul_(1.0 - group['lr'] * group['weight_decay'])
else:
p_fp32.mul_(1.0 - group['weight_decay'])
else:
if group['weight_decay'] != 0:
grad.add_(p_fp32, alpha=group['weight_decay'])
# get current state variable
exp_avg, exp_avg_var = state['exp_avg'], state['exp_avg_var']
state['step'] += 1
bias_correction1 = 1 - beta1 ** state['step']
bias_correction2 = 1 - beta2 ** state['step']
# Update first and second moment running average
exp_avg.mul_(beta1).add_(grad, alpha=1 - beta1)
grad_residual = grad - exp_avg
exp_avg_var.mul_(beta2).addcmul_(grad_residual, grad_residual, value=1 - beta2)
if amsgrad:
max_exp_avg_var = state['max_exp_avg_var']
# Maintains the maximum of all 2nd moment running avg. till now
torch.max(max_exp_avg_var, exp_avg_var.add_(group['eps']), out=max_exp_avg_var)
# Use the max. for normalizing running avg. of gradient
denom = (max_exp_avg_var.sqrt() / math.sqrt(bias_correction2)).add_(group['eps'])
else:
denom = (exp_avg_var.add_(group['eps']).sqrt() / math.sqrt(bias_correction2)).add_(group['eps'])
# update
if not group['rectify']:
# Default update
step_size = group['lr'] / bias_correction1
p_fp32.addcdiv_(exp_avg, denom, value=-step_size)
else:
# Rectified update, forked from RAdam
buffered = group['buffer'][int(state['step'] % 10)]
if state['step'] == buffered[0]:
num_sma, step_size = buffered[1], buffered[2]
else:
buffered[0] = state['step']
beta2_t = beta2 ** state['step']
num_sma_max = 2 / (1 - beta2) - 1
num_sma = num_sma_max - 2 * state['step'] * beta2_t / (1 - beta2_t)
buffered[1] = num_sma
# more conservative since it's an approximated value
if num_sma >= 5:
step_size = math.sqrt(
(1 - beta2_t) *
(num_sma - 4) / (num_sma_max - 4) *
(num_sma - 2) / num_sma *
num_sma_max / (num_sma_max - 2)) / (1 - beta1 ** state['step'])
elif group['degenerated_to_sgd']:
step_size = 1.0 / (1 - beta1 ** state['step'])
else:
step_size = -1
buffered[2] = step_size
if num_sma >= 5:
denom = exp_avg_var.sqrt().add_(group['eps'])
p_fp32.addcdiv_(exp_avg, denom, value=-step_size * group['lr'])
elif step_size > 0:
p_fp32.add_(exp_avg, alpha=-step_size * group['lr'])
if p.dtype in {torch.float16, torch.bfloat16}:
p.copy_(p_fp32)
return loss
| pytorch-image-models/timm/optim/adabelief.py/0 | {
"file_path": "pytorch-image-models/timm/optim/adabelief.py",
"repo_id": "pytorch-image-models",
"token_count": 5074
} | 198 |
""" RMSProp modified to behave like Tensorflow impl
Originally cut & paste from PyTorch RMSProp
https://github.com/pytorch/pytorch/blob/063946d2b3f3f1e953a2a3b54e0b34f1393de295/torch/optim/rmsprop.py
Licensed under BSD-Clause 3 (ish), https://github.com/pytorch/pytorch/blob/master/LICENSE
Modifications Copyright 2021 Ross Wightman
"""
import torch
from torch.optim import Optimizer
class RMSpropTF(Optimizer):
"""Implements RMSprop algorithm (TensorFlow style epsilon)
NOTE: This is a direct cut-and-paste of PyTorch RMSprop with eps applied before sqrt
and a few other modifications to closer match Tensorflow for matching hyper-params.
Noteworthy changes include:
1. Epsilon applied inside square-root
2. square_avg initialized to ones
3. LR scaling of update accumulated in momentum buffer
Proposed by G. Hinton in his
`course <http://www.cs.toronto.edu/~tijmen/csc321/slides/lecture_slides_lec6.pdf>`_.
The centered version first appears in `Generating Sequences
With Recurrent Neural Networks <https://arxiv.org/pdf/1308.0850v5.pdf>`_.
Arguments:
params (iterable): iterable of parameters to optimize or dicts defining
parameter groups
lr (float, optional): learning rate (default: 1e-2)
momentum (float, optional): momentum factor (default: 0)
alpha (float, optional): smoothing (decay) constant (default: 0.9)
eps (float, optional): term added to the denominator to improve
numerical stability (default: 1e-10)
centered (bool, optional) : if ``True``, compute the centered RMSProp,
the gradient is normalized by an estimation of its variance
weight_decay (float, optional): weight decay (L2 penalty) (default: 0)
decoupled_decay (bool, optional): decoupled weight decay as per https://arxiv.org/abs/1711.05101
lr_in_momentum (bool, optional): learning rate scaling is included in the momentum buffer
update as per defaults in Tensorflow
"""
def __init__(self, params, lr=1e-2, alpha=0.9, eps=1e-10, weight_decay=0, momentum=0., centered=False,
decoupled_decay=False, lr_in_momentum=True):
if not 0.0 <= lr:
raise ValueError("Invalid learning rate: {}".format(lr))
if not 0.0 <= eps:
raise ValueError("Invalid epsilon value: {}".format(eps))
if not 0.0 <= momentum:
raise ValueError("Invalid momentum value: {}".format(momentum))
if not 0.0 <= weight_decay:
raise ValueError("Invalid weight_decay value: {}".format(weight_decay))
if not 0.0 <= alpha:
raise ValueError("Invalid alpha value: {}".format(alpha))
defaults = dict(
lr=lr, momentum=momentum, alpha=alpha, eps=eps, centered=centered, weight_decay=weight_decay,
decoupled_decay=decoupled_decay, lr_in_momentum=lr_in_momentum)
super(RMSpropTF, self).__init__(params, defaults)
def __setstate__(self, state):
super(RMSpropTF, self).__setstate__(state)
for group in self.param_groups:
group.setdefault('momentum', 0)
group.setdefault('centered', False)
@torch.no_grad()
def step(self, closure=None):
"""Performs a single optimization step.
Arguments:
closure (callable, optional): A closure that reevaluates the model
and returns the loss.
"""
loss = None
if closure is not None:
with torch.enable_grad():
loss = closure()
for group in self.param_groups:
for p in group['params']:
if p.grad is None:
continue
grad = p.grad
if grad.is_sparse:
raise RuntimeError('RMSprop does not support sparse gradients')
state = self.state[p]
# State initialization
if len(state) == 0:
state['step'] = 0
state['square_avg'] = torch.ones_like(p) # PyTorch inits to zero
if group['momentum'] > 0:
state['momentum_buffer'] = torch.zeros_like(p)
if group['centered']:
state['grad_avg'] = torch.zeros_like(p)
square_avg = state['square_avg']
one_minus_alpha = 1. - group['alpha']
state['step'] += 1
if group['weight_decay'] != 0:
if group['decoupled_decay']:
p.mul_(1. - group['lr'] * group['weight_decay'])
else:
grad = grad.add(p, alpha=group['weight_decay'])
# Tensorflow order of ops for updating squared avg
square_avg.add_(grad.pow(2) - square_avg, alpha=one_minus_alpha)
# square_avg.mul_(alpha).addcmul_(grad, grad, value=1 - alpha) # PyTorch original
if group['centered']:
grad_avg = state['grad_avg']
grad_avg.add_(grad - grad_avg, alpha=one_minus_alpha)
avg = square_avg.addcmul(grad_avg, grad_avg, value=-1).add(group['eps']).sqrt_() # eps in sqrt
# grad_avg.mul_(alpha).add_(grad, alpha=1 - alpha) # PyTorch original
else:
avg = square_avg.add(group['eps']).sqrt_() # eps moved in sqrt
if group['momentum'] > 0:
buf = state['momentum_buffer']
# Tensorflow accumulates the LR scaling in the momentum buffer
if group['lr_in_momentum']:
buf.mul_(group['momentum']).addcdiv_(grad, avg, value=group['lr'])
p.add_(-buf)
else:
# PyTorch scales the param update by LR
buf.mul_(group['momentum']).addcdiv_(grad, avg)
p.add_(buf, alpha=-group['lr'])
else:
p.addcdiv_(grad, avg, value=-group['lr'])
return loss
| pytorch-image-models/timm/optim/rmsprop_tf.py/0 | {
"file_path": "pytorch-image-models/timm/optim/rmsprop_tf.py",
"repo_id": "pytorch-image-models",
"token_count": 2901
} | 199 |
""" CUDA / AMP utils
Hacked together by / Copyright 2020 Ross Wightman
"""
import torch
try:
from apex import amp
has_apex = True
except ImportError:
amp = None
has_apex = False
from .clip_grad import dispatch_clip_grad
class ApexScaler:
state_dict_key = "amp"
def __call__(
self,
loss,
optimizer,
clip_grad=None,
clip_mode='norm',
parameters=None,
create_graph=False,
need_update=True,
):
with amp.scale_loss(loss, optimizer) as scaled_loss:
scaled_loss.backward(create_graph=create_graph)
if need_update:
if clip_grad is not None:
dispatch_clip_grad(amp.master_params(optimizer), clip_grad, mode=clip_mode)
optimizer.step()
def state_dict(self):
if 'state_dict' in amp.__dict__:
return amp.state_dict()
def load_state_dict(self, state_dict):
if 'load_state_dict' in amp.__dict__:
amp.load_state_dict(state_dict)
class NativeScaler:
state_dict_key = "amp_scaler"
def __init__(self):
self._scaler = torch.cuda.amp.GradScaler()
def __call__(
self,
loss,
optimizer,
clip_grad=None,
clip_mode='norm',
parameters=None,
create_graph=False,
need_update=True,
):
self._scaler.scale(loss).backward(create_graph=create_graph)
if need_update:
if clip_grad is not None:
assert parameters is not None
self._scaler.unscale_(optimizer) # unscale the gradients of optimizer's assigned params in-place
dispatch_clip_grad(parameters, clip_grad, mode=clip_mode)
self._scaler.step(optimizer)
self._scaler.update()
def state_dict(self):
return self._scaler.state_dict()
def load_state_dict(self, state_dict):
self._scaler.load_state_dict(state_dict)
| pytorch-image-models/timm/utils/cuda.py/0 | {
"file_path": "pytorch-image-models/timm/utils/cuda.py",
"repo_id": "pytorch-image-models",
"token_count": 980
} | 200 |
import pytest
from text_generation import Client, AsyncClient
from text_generation.errors import NotFoundError, ValidationError
from text_generation.types import FinishReason, InputToken
def test_generate(flan_t5_xxl_url, hf_headers):
client = Client(flan_t5_xxl_url, hf_headers)
response = client.generate("test", max_new_tokens=1, decoder_input_details=True)
assert response.generated_text == ""
assert response.details.finish_reason == FinishReason.Length
assert response.details.generated_tokens == 1
assert response.details.seed is None
assert len(response.details.prefill) == 1
assert response.details.prefill[0] == InputToken(id=0, text="<pad>", logprob=None)
assert len(response.details.tokens) == 1
assert response.details.tokens[0].id == 3
assert response.details.tokens[0].text == " "
assert not response.details.tokens[0].special
def test_generate_best_of(flan_t5_xxl_url, hf_headers):
client = Client(flan_t5_xxl_url, hf_headers)
response = client.generate(
"test", max_new_tokens=1, best_of=2, do_sample=True, decoder_input_details=True
)
assert response.details.seed is not None
assert response.details.best_of_sequences is not None
assert len(response.details.best_of_sequences) == 1
assert response.details.best_of_sequences[0].seed is not None
def test_generate_not_found(fake_url, hf_headers):
client = Client(fake_url, hf_headers)
with pytest.raises(NotFoundError):
client.generate("test")
def test_generate_validation_error(flan_t5_xxl_url, hf_headers):
client = Client(flan_t5_xxl_url, hf_headers)
with pytest.raises(ValidationError):
client.generate("test", max_new_tokens=10_000)
def test_generate_stream(flan_t5_xxl_url, hf_headers):
client = Client(flan_t5_xxl_url, hf_headers)
responses = [
response for response in client.generate_stream("test", max_new_tokens=1)
]
assert len(responses) == 1
response = responses[0]
assert response.generated_text == ""
assert response.details.finish_reason == FinishReason.Length
assert response.details.generated_tokens == 1
assert response.details.seed is None
def test_generate_stream_not_found(fake_url, hf_headers):
client = Client(fake_url, hf_headers)
with pytest.raises(NotFoundError):
list(client.generate_stream("test"))
def test_generate_stream_validation_error(flan_t5_xxl_url, hf_headers):
client = Client(flan_t5_xxl_url, hf_headers)
with pytest.raises(ValidationError):
list(client.generate_stream("test", max_new_tokens=10_000))
@pytest.mark.asyncio
async def test_generate_async(flan_t5_xxl_url, hf_headers):
client = AsyncClient(flan_t5_xxl_url, hf_headers)
response = await client.generate(
"test", max_new_tokens=1, decoder_input_details=True
)
assert response.generated_text == ""
assert response.details.finish_reason == FinishReason.Length
assert response.details.generated_tokens == 1
assert response.details.seed is None
assert len(response.details.prefill) == 1
assert response.details.prefill[0] == InputToken(id=0, text="<pad>", logprob=None)
assert len(response.details.tokens) == 1
assert response.details.tokens[0].id == 3
assert response.details.tokens[0].text == " "
assert not response.details.tokens[0].special
@pytest.mark.asyncio
async def test_generate_async_best_of(flan_t5_xxl_url, hf_headers):
client = AsyncClient(flan_t5_xxl_url, hf_headers)
response = await client.generate(
"test", max_new_tokens=1, best_of=2, do_sample=True, decoder_input_details=True
)
assert response.details.seed is not None
assert response.details.best_of_sequences is not None
assert len(response.details.best_of_sequences) == 1
assert response.details.best_of_sequences[0].seed is not None
@pytest.mark.asyncio
async def test_generate_async_not_found(fake_url, hf_headers):
client = AsyncClient(fake_url, hf_headers)
with pytest.raises(NotFoundError):
await client.generate("test")
@pytest.mark.asyncio
async def test_generate_async_validation_error(flan_t5_xxl_url, hf_headers):
client = AsyncClient(flan_t5_xxl_url, hf_headers)
with pytest.raises(ValidationError):
await client.generate("test", max_new_tokens=10_000)
@pytest.mark.asyncio
async def test_generate_stream_async(flan_t5_xxl_url, hf_headers):
client = AsyncClient(flan_t5_xxl_url, hf_headers)
responses = [
response async for response in client.generate_stream("test", max_new_tokens=1)
]
assert len(responses) == 1
response = responses[0]
assert response.generated_text == ""
assert response.details.finish_reason == FinishReason.Length
assert response.details.generated_tokens == 1
assert response.details.seed is None
@pytest.mark.asyncio
async def test_generate_stream_async_not_found(fake_url, hf_headers):
client = AsyncClient(fake_url, hf_headers)
with pytest.raises(NotFoundError):
async for _ in client.generate_stream("test"):
pass
@pytest.mark.asyncio
async def test_generate_stream_async_validation_error(flan_t5_xxl_url, hf_headers):
client = AsyncClient(flan_t5_xxl_url, hf_headers)
with pytest.raises(ValidationError):
async for _ in client.generate_stream("test", max_new_tokens=10_000):
pass
| text-generation-inference/clients/python/tests/test_client.py/0 | {
"file_path": "text-generation-inference/clients/python/tests/test_client.py",
"repo_id": "text-generation-inference",
"token_count": 2116
} | 201 |
# Preparing the Model
Text Generation Inference improves the model in several aspects.
## Quantization
TGI supports [bits-and-bytes](https://github.com/TimDettmers/bitsandbytes#bitsandbytes), [GPT-Q](https://arxiv.org/abs/2210.17323) and [AWQ](https://arxiv.org/abs/2306.00978) quantization. To speed up inference with quantization, simply set `quantize` flag to `bitsandbytes`, `gptq` or `awq` depending on the quantization technique you wish to use. When using GPT-Q quantization, you need to point to one of the models [here](https://huggingface.co/models?search=gptq) when using AWQ quantization, you need to point to one of the models [here](https://huggingface.co/models?search=awq). To get more information about quantization, please refer to [quantization guide](./../conceptual/quantization)
## RoPE Scaling
RoPE scaling can be used to increase the sequence length of the model during the inference time without necessarily fine-tuning it. To enable RoPE scaling, simply pass `--rope-scaling`, `--max-input-length` and `--rope-factors` flags when running through CLI. `--rope-scaling` can take the values `linear` or `dynamic`. If your model is not fine-tuned to a longer sequence length, use `dynamic`. `--rope-factor` is the ratio between the intended max sequence length and the model's original max sequence length. Make sure to pass `--max-input-length` to provide maximum input length for extension.
<Tip>
We recommend using `dynamic` RoPE scaling.
</Tip>
## Safetensors
[Safetensors](https://github.com/huggingface/safetensors) is a fast and safe persistence format for deep learning models, and is required for tensor parallelism. TGI supports `safetensors` model loading under the hood. By default, given a repository with `safetensors` and `pytorch` weights, TGI will always load `safetensors`. If there's no `pytorch` weights, TGI will convert the weights to `safetensors` format.
| text-generation-inference/docs/source/basic_tutorials/preparing_model.md/0 | {
"file_path": "text-generation-inference/docs/source/basic_tutorials/preparing_model.md",
"repo_id": "text-generation-inference",
"token_count": 551
} | 202 |
[
{
"details": {
"best_of_sequences": null,
"finish_reason": "length",
"generated_tokens": 10,
"prefill": [
{
"id": 17934,
"logprob": null,
"text": "Pour"
},
{
"id": 49833,
"logprob": -10.5625,
"text": " dég"
},
{
"id": 21543,
"logprob": -0.14770508,
"text": "uster"
},
{
"id": 447,
"logprob": -1.9287109,
"text": " un"
},
{
"id": 46341,
"logprob": -15.4609375,
"text": " ort"
},
{
"id": 35567,
"logprob": -7.5585938,
"text": "olan"
},
{
"id": 15,
"logprob": -1.4003906,
"text": ","
},
{
"id": 1669,
"logprob": -1.5673828,
"text": " il"
},
{
"id": 11580,
"logprob": -0.94628906,
"text": " faut"
},
{
"id": 3913,
"logprob": -3.703125,
"text": " tout"
},
{
"id": 39261,
"logprob": -1.5732422,
"text": " d'abord"
}
],
"seed": null,
"tokens": [
{
"id": 578,
"logprob": -1.7646484,
"special": false,
"text": " le"
},
{
"id": 5608,
"logprob": -2.6113281,
"special": false,
"text": " faire"
},
{
"id": 1767,
"logprob": -1.5263672,
"special": false,
"text": " cu"
},
{
"id": 1273,
"logprob": -0.00010049343,
"special": false,
"text": "ire"
},
{
"id": 1486,
"logprob": -1.4707031,
"special": false,
"text": " dans"
},
{
"id": 283,
"logprob": -1.2119141,
"special": false,
"text": " de"
},
{
"id": 40410,
"logprob": -0.11883545,
"special": false,
"text": " l'eau"
},
{
"id": 20226,
"logprob": -0.40844727,
"special": false,
"text": " bou"
},
{
"id": 172483,
"logprob": -0.0037841797,
"special": false,
"text": "illante"
},
{
"id": 2805,
"logprob": -1.0195312,
"special": false,
"text": " sal"
}
]
},
"generated_text": " le faire cuire dans de l'eau bouillante sal"
},
{
"details": {
"best_of_sequences": null,
"finish_reason": "length",
"generated_tokens": 10,
"prefill": [
{
"id": 17934,
"logprob": null,
"text": "Pour"
},
{
"id": 49833,
"logprob": -10.53125,
"text": " dég"
},
{
"id": 21543,
"logprob": -0.14770508,
"text": "uster"
},
{
"id": 447,
"logprob": -1.9287109,
"text": " un"
},
{
"id": 46341,
"logprob": -15.4140625,
"text": " ort"
},
{
"id": 35567,
"logprob": -7.5234375,
"text": "olan"
},
{
"id": 15,
"logprob": -1.3613281,
"text": ","
},
{
"id": 1669,
"logprob": -1.5458984,
"text": " il"
},
{
"id": 11580,
"logprob": -0.94189453,
"text": " faut"
},
{
"id": 3913,
"logprob": -3.7011719,
"text": " tout"
},
{
"id": 39261,
"logprob": -1.5732422,
"text": " d'abord"
}
],
"seed": null,
"tokens": [
{
"id": 578,
"logprob": -1.7548828,
"special": false,
"text": " le"
},
{
"id": 5608,
"logprob": -2.578125,
"special": false,
"text": " faire"
},
{
"id": 1767,
"logprob": -1.5117188,
"special": false,
"text": " cu"
},
{
"id": 1273,
"logprob": -0.00010049343,
"special": false,
"text": "ire"
},
{
"id": 1486,
"logprob": -1.4707031,
"special": false,
"text": " dans"
},
{
"id": 283,
"logprob": -1.1982422,
"special": false,
"text": " de"
},
{
"id": 40410,
"logprob": -0.11004639,
"special": false,
"text": " l'eau"
},
{
"id": 20226,
"logprob": -0.4506836,
"special": false,
"text": " bou"
},
{
"id": 172483,
"logprob": -0.003047943,
"special": false,
"text": "illante"
},
{
"id": 2805,
"logprob": -1.0185547,
"special": false,
"text": " sal"
}
]
},
"generated_text": " le faire cuire dans de l'eau bouillante sal"
},
{
"details": {
"best_of_sequences": null,
"finish_reason": "length",
"generated_tokens": 10,
"prefill": [
{
"id": 17934,
"logprob": null,
"text": "Pour"
},
{
"id": 49833,
"logprob": -10.53125,
"text": " dég"
},
{
"id": 21543,
"logprob": -0.14770508,
"text": "uster"
},
{
"id": 447,
"logprob": -1.9287109,
"text": " un"
},
{
"id": 46341,
"logprob": -15.4140625,
"text": " ort"
},
{
"id": 35567,
"logprob": -7.5234375,
"text": "olan"
},
{
"id": 15,
"logprob": -1.3613281,
"text": ","
},
{
"id": 1669,
"logprob": -1.5458984,
"text": " il"
},
{
"id": 11580,
"logprob": -0.94189453,
"text": " faut"
},
{
"id": 3913,
"logprob": -3.7011719,
"text": " tout"
},
{
"id": 39261,
"logprob": -1.5732422,
"text": " d'abord"
}
],
"seed": null,
"tokens": [
{
"id": 578,
"logprob": -1.7548828,
"special": false,
"text": " le"
},
{
"id": 5608,
"logprob": -2.578125,
"special": false,
"text": " faire"
},
{
"id": 1767,
"logprob": -1.5117188,
"special": false,
"text": " cu"
},
{
"id": 1273,
"logprob": -0.00010049343,
"special": false,
"text": "ire"
},
{
"id": 1486,
"logprob": -1.4707031,
"special": false,
"text": " dans"
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},
{
"id": 70,
"logprob": -0.005420685,
"text": "e"
},
{
"id": 13,
"logprob": -7.2226562,
"text": ","
},
{
"id": 285,
"logprob": -0.26879883,
"text": " and"
},
{
"id": 752,
"logprob": -2.1992188,
"text": " what"
},
{
"id": 434,
"logprob": -5.46875,
"text": "'s"
},
{
"id": 253,
"logprob": -0.8017578,
"text": " the"
},
{
"id": 2892,
"logprob": -6.6796875,
"text": " history"
},
{
"id": 3212,
"logprob": -2.1972656,
"text": " behind"
},
{
"id": 436,
"logprob": -11.4453125,
"text": " this"
},
{
"id": 3159,
"logprob": -2.1933594,
"text": " word"
},
{
"id": 32,
"logprob": -0.007858276,
"text": "?"
},
{
"id": 0,
"logprob": -2.328125,
"text": "<|endoftext|>"
},
{
"id": 50281,
"logprob": -18.21875,
"text": "<|assistant|>"
}
],
"seed": null,
"tokens": [
{
"id": 510,
"logprob": -0.6201172,
"special": false,
"text": "The"
},
{
"id": 3159,
"logprob": -0.546875,
"special": false,
"text": " word"
},
{
"id": 346,
"logprob": -0.051879883,
"special": false,
"text": " \""
},
{
"id": 6441,
"logprob": -0.0020179749,
"special": false,
"text": "mem"
},
{
"id": 70,
"logprob": -1.04904175e-05,
"special": false,
"text": "e"
},
{
"id": 3,
"logprob": -0.0009560585,
"special": false,
"text": "\""
},
{
"id": 369,
"logprob": -0.08557129,
"special": false,
"text": " was"
},
{
"id": 806,
"logprob": -0.12084961,
"special": false,
"text": " first"
},
{
"id": 908,
"logprob": -0.01737976,
"special": false,
"text": " used"
},
{
"id": 275,
"logprob": -0.4025879,
"special": false,
"text": " in"
}
]
},
"generated_text": "The word \"meme\" was first used in"
}
]
| text-generation-inference/integration-tests/models/__snapshots__/test_neox_sharded/test_neox_load.json/0 | {
"file_path": "text-generation-inference/integration-tests/models/__snapshots__/test_neox_sharded/test_neox_load.json",
"repo_id": "text-generation-inference",
"token_count": 9164
} | 206 |
import pytest
@pytest.fixture(scope="module")
def flash_starcoder_handle(launcher):
with launcher("bigcode/starcoder", num_shard=2) as handle:
yield handle
@pytest.fixture(scope="module")
async def flash_starcoder(flash_starcoder_handle):
await flash_starcoder_handle.health(300)
return flash_starcoder_handle.client
@pytest.mark.asyncio
@pytest.mark.private
async def test_flash_starcoder(flash_starcoder, response_snapshot):
response = await flash_starcoder.generate(
"def print_hello", max_new_tokens=10, decoder_input_details=True
)
assert response.details.generated_tokens == 10
assert response == response_snapshot
@pytest.mark.asyncio
@pytest.mark.private
async def test_flash_starcoder_default_params(flash_starcoder, response_snapshot):
response = await flash_starcoder.generate(
"def print_hello",
max_new_tokens=60,
temperature=0.2,
top_p=0.95,
decoder_input_details=True,
seed=0,
)
assert response.details.generated_tokens == 60
assert response == response_snapshot
@pytest.mark.asyncio
@pytest.mark.private
async def test_flash_starcoder_load(flash_starcoder, generate_load, response_snapshot):
responses = await generate_load(
flash_starcoder, "def print_hello", max_new_tokens=10, n=4
)
assert len(responses) == 4
assert all([r.generated_text == responses[0].generated_text for r in responses])
assert responses == response_snapshot
| text-generation-inference/integration-tests/models/test_flash_starcoder.py/0 | {
"file_path": "text-generation-inference/integration-tests/models/test_flash_starcoder.py",
"repo_id": "text-generation-inference",
"token_count": 578
} | 207 |
import { check, randomSeed } from 'k6';
import http from 'k6/http';
import { Trend, Counter } from 'k6/metrics';
import { randomItem } from 'https://jslib.k6.io/k6-utils/1.2.0/index.js';
const seed = 0;
const host = __ENV.HOST || '127.0.0.1:8000';
const timePerToken = new Trend('time_per_token', true);
const tokens = new Counter('tokens');
const new_tokens = new Counter('new_tokens');
const input_tokens = new Counter('input_tokens');
randomSeed(seed);
// const shareGPT = JSON.parse(open("ShareGPT_V3_unfiltered_cleaned_split.json"))
const shareGPT = JSON.parse(open("small.json"))
export function get_options(reference_latency_ms){
return {
thresholds: {
http_req_failed: ['rate==0'],
time_per_token: [{
threshold: `p(50)<${5 * reference_latency_ms}`,
abortOnFail: true,
delayAbortEval: '10s'
}],
},
scenarios: {
load_test: {
executor: 'constant-arrival-rate',
duration: '60s',
preAllocatedVUs: 10,
rate: 10,
timeUnit: '1s',
},
},
};
}
export function run(host, generate_payload, max_new_tokens) {
const headers = {'Content-Type': 'application/json'};
const query = randomItem(shareGPT);
const payload = JSON.stringify(generate_payload(query));
const res = http.post(`http://${host}/generate`, payload, {
headers,
});
if(res.status >= 400 && res.status < 500){
return;
}
check(res, {
'Post status is 200': (r) => res.status === 200,
});
const duration = res.timings.duration;
if (res.status === 200) {
const body = res.json();
const n_tokens = body.details.tokens.length;
const latency_ms_per_token = duration / n_tokens;
timePerToken.add(latency_ms_per_token);
const latency_in_s = latency_ms_per_token / 1000;
const individual_throughput = 1 / latency_in_s;
const _input_tokens = body.details.prefill.length;
tokens.add(n_tokens + _input_tokens);
input_tokens.add(_input_tokens);
new_tokens.add(n_tokens);
}
}
| text-generation-inference/load_tests/common.js/0 | {
"file_path": "text-generation-inference/load_tests/common.js",
"repo_id": "text-generation-inference",
"token_count": 1026
} | 208 |
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use text_generation_client::{
Batch, NextTokenChooserParameters, Request, ShardedClient, StoppingCriteriaParameters,
};
// Note: Request ids and batch ids cannot collide.
const LIVENESS_ID: u64 = u64::MAX;
const BATCH_ID: u64 = u64::MAX;
#[derive(Clone, Debug)]
pub(crate) struct Health {
client: ShardedClient,
generation_health: Arc<AtomicBool>,
}
impl Health {
pub(crate) fn new(client: ShardedClient, generation_health: Arc<AtomicBool>) -> Self {
Self {
client,
generation_health,
}
}
pub(crate) async fn check(&mut self) -> bool {
if self.generation_health.load(Ordering::SeqCst) {
// Generation is healthy, we only check that the shards are answering gRPC calls
self.client.health().await.is_ok()
} else {
// Generation is unhealthy or have not sent any generation request yet
// Dummy batch of 1 token and 1 generated token
let liveness_request = Request {
id: LIVENESS_ID,
inputs: "liveness".to_string(),
truncate: 10,
prefill_logprobs: false,
parameters: Some(NextTokenChooserParameters {
temperature: 1.0,
top_k: 0,
top_p: 1.0,
typical_p: 1.0,
do_sample: false,
seed: 0,
repetition_penalty: 1.0,
watermark: false,
}),
stopping_parameters: Some(StoppingCriteriaParameters {
max_new_tokens: 1,
stop_sequences: vec![],
ignore_eos_token: false,
}),
top_n_tokens: 0,
};
let batch = Batch {
id: BATCH_ID,
requests: vec![liveness_request],
size: 1,
max_tokens: 2,
};
// Skips the queue
let value = self.client.prefill(batch).await.is_ok();
// Update generation health
self.generation_health.store(value, Ordering::SeqCst);
value
}
}
}
| text-generation-inference/router/src/health.rs/0 | {
"file_path": "text-generation-inference/router/src/health.rs",
"repo_id": "text-generation-inference",
"token_count": 1198
} | 209 |
# Text Generation Inference Python gRPC Server
A Python gRPC server for Text Generation Inference
## Install
```shell
make install
```
## Run
```shell
make run-dev
``` | text-generation-inference/server/README.md/0 | {
"file_path": "text-generation-inference/server/README.md",
"repo_id": "text-generation-inference",
"token_count": 55
} | 210 |
// Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _tuning_h
#define _tuning_h
struct ExLlamaTuning
{
int matmul_recons_thd;
bool matmul_fused_remap;
bool matmul_no_half2;
};
#endif
| text-generation-inference/server/exllama_kernels/exllama_kernels/tuning.h/0 | {
"file_path": "text-generation-inference/server/exllama_kernels/exllama_kernels/tuning.h",
"repo_id": "text-generation-inference",
"token_count": 106
} | 211 |