Commit
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Parent(s):
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5dec019ffbe5c6f9bc2ec69118688cb1835de8628a358b4f16d2300385e12c43
Browse files- README.md +35 -3
- added_tokens.json +13 -0
- config.json +39 -0
- configuration_phi3.py +227 -0
- model.safetensors.index.json +462 -0
- modeling_phi3.py +1563 -0
- sample_finetune.py +214 -0
- special_tokens_map.json +30 -0
- tokenizer.json +0 -0
- tokenizer.model +3 -0
- tokenizer_config.json +131 -0
README.md
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---
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---
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language:
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- en
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license: mit
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license_link: https://huggingface.co/microsoft/Phi-3-mini-4k-instruct/resolve/main/LICENSE
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pipeline_tag: text-generation
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tags:
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- nlp
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- code
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- mlx
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inference:
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parameters:
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temperature: 0.0
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widget:
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- messages:
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- role: user
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content: Can you provide ways to eat combinations of bananas and dragonfruits?
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---
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# lopezhansel/phined-tuned
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The Model [lopezhansel/phined-tuned](https://huggingface.co/lopezhansel/phined-tuned) was converted to MLX format from [microsoft/Phi-3-mini-4k-instruct](https://huggingface.co/microsoft/Phi-3-mini-4k-instruct) using mlx-lm version **0.16.0**.
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## Use with mlx
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```bash
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pip install mlx-lm
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```
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```python
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from mlx_lm import load, generate
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model, tokenizer = load("lopezhansel/phined-tuned")
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response = generate(model, tokenizer, prompt="hello", verbose=True)
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```
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added_tokens.json
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{
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"<|assistant|>": 32001,
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"<|endoftext|>": 32000,
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"<|end|>": 32007,
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"<|placeholder1|>": 32002,
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"<|placeholder2|>": 32003,
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"<|placeholder3|>": 32004,
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"<|placeholder4|>": 32005,
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"<|placeholder5|>": 32008,
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"<|placeholder6|>": 32009,
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"<|system|>": 32006,
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"<|user|>": 32010
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}
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config.json
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{
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"architectures": [
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"Phi3ForCausalLM"
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],
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"attention_bias": false,
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"attention_dropout": 0.0,
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"auto_map": {
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"AutoConfig": "configuration_phi3.Phi3Config",
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"AutoModelForCausalLM": "modeling_phi3.Phi3ForCausalLM"
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},
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"bos_token_id": 1,
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"embd_pdrop": 0.0,
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"eos_token_id": 32000,
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"hidden_act": "silu",
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"hidden_size": 3072,
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"initializer_range": 0.02,
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"intermediate_size": 8192,
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"max_position_embeddings": 4096,
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"model_type": "phi3",
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"num_attention_heads": 32,
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"num_hidden_layers": 32,
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"num_key_value_heads": 32,
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"original_max_position_embeddings": 4096,
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"pad_token_id": 32000,
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"quantization": {
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"group_size": 64,
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"bits": 8
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},
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"resid_pdrop": 0.0,
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"rms_norm_eps": 1e-05,
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"rope_scaling": null,
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"rope_theta": 10000.0,
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"sliding_window": 2047,
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"tie_word_embeddings": false,
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"torch_dtype": "bfloat16",
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"transformers_version": "4.40.2",
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"use_cache": true,
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"vocab_size": 32064
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}
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configuration_phi3.py
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# coding=utf-8
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# Copyright 2024 Microsoft and the HuggingFace Inc. team. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" Phi-3 model configuration"""
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from transformers.configuration_utils import PretrainedConfig
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from transformers.utils import logging
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logger = logging.get_logger(__name__)
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PHI3_PRETRAINED_CONFIG_ARCHIVE_MAP = {
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"microsoft/Phi-3-mini-4k-instruct": "https://huggingface.co/microsoft/Phi-3-mini-4k-instruct/resolve/main/config.json",
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"microsoft/Phi-3-mini-128k-instruct": "https://huggingface.co/microsoft/Phi-3-mini-128k-instruct/resolve/main/config.json",
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}
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class Phi3Config(PretrainedConfig):
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r"""
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This is the configuration class to store the configuration of a [`Phi3Model`]. It is used to instantiate a Phi-3
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model according to the specified arguments, defining the model architecture. Instantiating a configuration with the
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defaults will yield a similar configuration to that of the
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[microsoft/Phi-3-mini-4k-instruct](https://huggingface.co/microsoft/Phi-3-mini-4k-instruct).
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Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
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documentation from [`PretrainedConfig`] for more information.
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Args:
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vocab_size (`int`, *optional*, defaults to 32064):
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+
Vocabulary size of the Phi-3 model. Defines the number of different tokens that can be represented by the
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`inputs_ids` passed when calling [`Phi3Model`].
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hidden_size (`int`, *optional*, defaults to 3072):
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Dimension of the hidden representations.
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+
intermediate_size (`int`, *optional*, defaults to 8192):
|
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+
Dimension of the MLP representations.
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+
num_hidden_layers (`int`, *optional*, defaults to 32):
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+
Number of hidden layers in the Transformer decoder.
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+
num_attention_heads (`int`, *optional*, defaults to 32):
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+
Number of attention heads for each attention layer in the Transformer decoder.
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+
num_key_value_heads (`int`, *optional*):
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+
This is the number of key_value heads that should be used to implement Grouped Query Attention. If
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`num_key_value_heads=num_attention_heads`, the model will use Multi Head Attention (MHA), if
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`num_key_value_heads=1 the model will use Multi Query Attention (MQA) otherwise GQA is used. When
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converting a multi-head checkpoint to a GQA checkpoint, each group key and value head should be constructed
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by meanpooling all the original heads within that group. For more details checkout [this
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paper](https://arxiv.org/pdf/2305.13245.pdf). If it is not specified, will default to
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`num_attention_heads`.
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resid_pdrop (`float`, *optional*, defaults to 0.0):
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Dropout probability for mlp outputs.
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embd_pdrop (`int`, *optional*, defaults to 0.0):
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The dropout ratio for the embeddings.
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+
attention_dropout (`float`, *optional*, defaults to 0.0):
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The dropout ratio after computing the attention scores.
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hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
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The non-linear activation function (function or string) in the decoder.
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max_position_embeddings (`int`, *optional*, defaults to 4096):
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The maximum sequence length that this model might ever be used with.
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original_max_position_embeddings (`int`, *optional*, defaults to 4096):
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The maximum sequence length that this model was trained with. This is used to determine the size of the
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original RoPE embeddings when using long scaling.
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initializer_range (`float`, *optional*, defaults to 0.02):
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+
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
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rms_norm_eps (`float`, *optional*, defaults to 1e-05):
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The epsilon value used for the RMSNorm.
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use_cache (`bool`, *optional*, defaults to `True`):
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Whether or not the model should return the last key/values attentions (not used by all models). Only
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relevant if `config.is_decoder=True`. Whether to tie weight embeddings or not.
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tie_word_embeddings (`bool`, *optional*, defaults to `False`):
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Whether to tie weight embeddings
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rope_theta (`float`, *optional*, defaults to 10000.0):
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The base period of the RoPE embeddings.
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+
rope_scaling (`dict`, *optional*):
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The scaling strategy for the RoPE embeddings. If `None`, no scaling is applied. If a dictionary, it must
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contain the following keys: `type`, `short_factor` and `long_factor`. The `type` must be `longrope` and
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the `short_factor` and `long_factor` must be lists of numbers with the same length as the hidden size
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divided by the number of attention heads divided by 2.
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bos_token_id (`int`, *optional*, defaults to 1):
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The id of the "beginning-of-sequence" token.
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eos_token_id (`int`, *optional*, defaults to 32000):
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The id of the "end-of-sequence" token.
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pad_token_id (`int`, *optional*, defaults to 32000):
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The id of the padding token.
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sliding_window (`int`, *optional*):
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Sliding window attention window size. If `None`, no sliding window is applied.
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Example:
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```python
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>>> from transformers import Phi3Model, Phi3Config
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+
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>>> # Initializing a Phi-3 style configuration
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>>> configuration = Phi3Config.from_pretrained("microsoft/Phi-3-mini-4k-instruct")
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+
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>>> # Initializing a model from the configuration
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>>> model = Phi3Model(configuration)
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+
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>>> # Accessing the model configuration
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>>> configuration = model.config
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```"""
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+
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model_type = "phi3"
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keys_to_ignore_at_inference = ["past_key_values"]
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+
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def __init__(
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self,
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+
vocab_size=32064,
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hidden_size=3072,
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+
intermediate_size=8192,
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122 |
+
num_hidden_layers=32,
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123 |
+
num_attention_heads=32,
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124 |
+
num_key_value_heads=None,
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125 |
+
resid_pdrop=0.0,
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+
embd_pdrop=0.0,
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+
attention_dropout=0.0,
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128 |
+
hidden_act="silu",
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129 |
+
max_position_embeddings=4096,
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130 |
+
original_max_position_embeddings=4096,
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+
initializer_range=0.02,
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132 |
+
rms_norm_eps=1e-5,
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133 |
+
use_cache=True,
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+
tie_word_embeddings=False,
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+
rope_theta=10000.0,
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+
rope_scaling=None,
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137 |
+
bos_token_id=1,
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138 |
+
eos_token_id=32000,
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+
pad_token_id=32000,
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+
sliding_window=None,
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**kwargs,
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):
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+
self.vocab_size = vocab_size
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+
self.hidden_size = hidden_size
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145 |
+
self.intermediate_size = intermediate_size
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146 |
+
self.num_hidden_layers = num_hidden_layers
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147 |
+
self.num_attention_heads = num_attention_heads
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148 |
+
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149 |
+
if num_key_value_heads is None:
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+
num_key_value_heads = num_attention_heads
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+
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+
self.num_key_value_heads = num_key_value_heads
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+
self.resid_pdrop = resid_pdrop
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+
self.embd_pdrop = embd_pdrop
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+
self.attention_dropout = attention_dropout
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+
self.hidden_act = hidden_act
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+
self.max_position_embeddings = max_position_embeddings
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self.original_max_position_embeddings = original_max_position_embeddings
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+
self.initializer_range = initializer_range
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+
self.rms_norm_eps = rms_norm_eps
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self.use_cache = use_cache
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162 |
+
self.rope_theta = rope_theta
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+
self.rope_scaling = rope_scaling
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+
self._rope_scaling_adjustment()
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+
self._rope_scaling_validation()
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self.sliding_window = sliding_window
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+
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super().__init__(
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bos_token_id=bos_token_id,
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+
eos_token_id=eos_token_id,
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+
pad_token_id=pad_token_id,
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+
tie_word_embeddings=tie_word_embeddings,
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**kwargs,
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)
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+
|
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+
def _rope_scaling_adjustment(self):
|
177 |
+
"""
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Adjust the `type` of the `rope_scaling` configuration for backward compatibility.
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+
"""
|
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+
if self.rope_scaling is None:
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+
return
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182 |
+
|
183 |
+
rope_scaling_type = self.rope_scaling.get("type", None)
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184 |
+
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185 |
+
# For backward compatibility if previous version used "su" or "yarn"
|
186 |
+
if rope_scaling_type is not None and rope_scaling_type in ["su", "yarn"]:
|
187 |
+
self.rope_scaling["type"] = "longrope"
|
188 |
+
|
189 |
+
def _rope_scaling_validation(self):
|
190 |
+
"""
|
191 |
+
Validate the `rope_scaling` configuration.
|
192 |
+
"""
|
193 |
+
if self.rope_scaling is None:
|
194 |
+
return
|
195 |
+
|
196 |
+
if not isinstance(self.rope_scaling, dict) or len(self.rope_scaling) != 3:
|
197 |
+
raise ValueError(
|
198 |
+
"`rope_scaling` must be a dictionary with three fields, `type`, `short_factor` and `long_factor`, "
|
199 |
+
f"got {self.rope_scaling}"
|
200 |
+
)
|
201 |
+
rope_scaling_type = self.rope_scaling.get("type", None)
|
202 |
+
rope_scaling_short_factor = self.rope_scaling.get("short_factor", None)
|
203 |
+
rope_scaling_long_factor = self.rope_scaling.get("long_factor", None)
|
204 |
+
if rope_scaling_type is None or rope_scaling_type not in ["longrope"]:
|
205 |
+
raise ValueError(f"`rope_scaling`'s type field must be one of ['longrope'], got {rope_scaling_type}")
|
206 |
+
if not (
|
207 |
+
isinstance(rope_scaling_short_factor, list)
|
208 |
+
and all(isinstance(x, (int, float)) for x in rope_scaling_short_factor)
|
209 |
+
):
|
210 |
+
raise ValueError(
|
211 |
+
f"`rope_scaling`'s short_factor field must be a list of numbers, got {rope_scaling_short_factor}"
|
212 |
+
)
|
213 |
+
if not len(rope_scaling_short_factor) == self.hidden_size // self.num_attention_heads // 2:
|
214 |
+
raise ValueError(
|
215 |
+
f"`rope_scaling`'s short_factor field must have length {self.hidden_size // self.num_attention_heads // 2}, got {len(rope_scaling_short_factor)}"
|
216 |
+
)
|
217 |
+
if not (
|
218 |
+
isinstance(rope_scaling_long_factor, list)
|
219 |
+
and all(isinstance(x, (int, float)) for x in rope_scaling_long_factor)
|
220 |
+
):
|
221 |
+
raise ValueError(
|
222 |
+
f"`rope_scaling`'s long_factor field must be a list of numbers, got {rope_scaling_long_factor}"
|
223 |
+
)
|
224 |
+
if not len(rope_scaling_long_factor) == self.hidden_size // self.num_attention_heads // 2:
|
225 |
+
raise ValueError(
|
226 |
+
f"`rope_scaling`'s long_factor field must have length {self.hidden_size // self.num_attention_heads // 2}, got {len(rope_scaling_long_factor)}"
|
227 |
+
)
|
model.safetensors.index.json
ADDED
@@ -0,0 +1,462 @@
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|
|
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|
1 |
+
{
|
2 |
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|
3 |
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4 |
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5 |
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|
modeling_phi3.py
ADDED
@@ -0,0 +1,1563 @@
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|
1 |
+
# coding=utf-8
|
2 |
+
# Copyright 2024 Microsoft and the HuggingFace Inc. team. All rights reserved.
|
3 |
+
#
|
4 |
+
# Licensed under the Apache License, Version 2.0 (the "License");
|
5 |
+
# you may not use this file except in compliance with the License.
|
6 |
+
# You may obtain a copy of the License at
|
7 |
+
#
|
8 |
+
# http://www.apache.org/licenses/LICENSE-2.0
|
9 |
+
#
|
10 |
+
# Unless required by applicable law or agreed to in writing, software
|
11 |
+
# distributed under the License is distributed on an "AS IS" BASIS,
|
12 |
+
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
13 |
+
# See the License for the specific language governing permissions and
|
14 |
+
# limitations under the License.
|
15 |
+
|
16 |
+
""" PyTorch Phi-3 model."""
|
17 |
+
|
18 |
+
import inspect
|
19 |
+
import math
|
20 |
+
import warnings
|
21 |
+
from typing import List, Optional, Tuple, Union
|
22 |
+
|
23 |
+
import torch
|
24 |
+
import torch.nn.functional as F
|
25 |
+
import torch.utils.checkpoint
|
26 |
+
from torch import nn
|
27 |
+
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
|
28 |
+
|
29 |
+
from transformers.activations import ACT2FN
|
30 |
+
from transformers.cache_utils import Cache, DynamicCache
|
31 |
+
from transformers.modeling_attn_mask_utils import _prepare_4d_causal_attention_mask
|
32 |
+
from transformers.modeling_outputs import (
|
33 |
+
BaseModelOutputWithPast,
|
34 |
+
CausalLMOutputWithPast,
|
35 |
+
SequenceClassifierOutputWithPast,
|
36 |
+
TokenClassifierOutput,
|
37 |
+
)
|
38 |
+
from transformers.modeling_utils import PreTrainedModel
|
39 |
+
from transformers.utils import (
|
40 |
+
add_code_sample_docstrings,
|
41 |
+
add_start_docstrings,
|
42 |
+
add_start_docstrings_to_model_forward,
|
43 |
+
is_flash_attn_2_available,
|
44 |
+
is_flash_attn_greater_or_equal_2_10,
|
45 |
+
logging,
|
46 |
+
replace_return_docstrings,
|
47 |
+
)
|
48 |
+
from .configuration_phi3 import Phi3Config
|
49 |
+
|
50 |
+
|
51 |
+
logger = logging.get_logger(__name__)
|
52 |
+
|
53 |
+
# Transformers scans dependencies in the modeling file, causing issues on conditional loading. The regex only ignores try/catch blocks, but not if statements
|
54 |
+
# if is_flash_attn_2_available():
|
55 |
+
_flash_supports_window_size = False
|
56 |
+
try:
|
57 |
+
from flash_attn import flash_attn_func, flash_attn_varlen_func
|
58 |
+
from flash_attn.bert_padding import index_first_axis, pad_input, unpad_input # noqa
|
59 |
+
|
60 |
+
_flash_supports_window_size = "window_size" in list(inspect.signature(flash_attn_func).parameters)
|
61 |
+
except ImportError as error:
|
62 |
+
logger.warning(
|
63 |
+
f"`flash-attention` package not found, consider installing for better performance: {error}."
|
64 |
+
)
|
65 |
+
if not _flash_supports_window_size:
|
66 |
+
logger.warning(
|
67 |
+
"Current `flash-attention` does not support `window_size`. Either upgrade or use `attn_implementation='eager'`."
|
68 |
+
)
|
69 |
+
|
70 |
+
_CHECKPOINT_FOR_DOC = "microsoft/Phi-3-mini-4k-instruct"
|
71 |
+
_CONFIG_FOR_DOC = "Phi3Config"
|
72 |
+
|
73 |
+
PHI3_PRETRAINED_MODEL_ARCHIVE_LIST = [
|
74 |
+
"microsoft/Phi-3-mini-4k-instruct",
|
75 |
+
"microsoft/Phi-3-mini-128k-instruct",
|
76 |
+
# See all Phi-3 models at https://huggingface.co/models?filter=Phi-3
|
77 |
+
]
|
78 |
+
|
79 |
+
|
80 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaRMSNorm with Llama->Phi3
|
81 |
+
class Phi3RMSNorm(nn.Module):
|
82 |
+
def __init__(self, hidden_size, eps=1e-6):
|
83 |
+
"""
|
84 |
+
Phi3RMSNorm is equivalent to T5LayerNorm
|
85 |
+
"""
|
86 |
+
super().__init__()
|
87 |
+
self.weight = nn.Parameter(torch.ones(hidden_size))
|
88 |
+
self.variance_epsilon = eps
|
89 |
+
|
90 |
+
def forward(self, hidden_states):
|
91 |
+
input_dtype = hidden_states.dtype
|
92 |
+
hidden_states = hidden_states.to(torch.float32)
|
93 |
+
variance = hidden_states.pow(2).mean(-1, keepdim=True)
|
94 |
+
hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon)
|
95 |
+
return self.weight * hidden_states.to(input_dtype)
|
96 |
+
|
97 |
+
|
98 |
+
# Copied from transformers.models.llama.modeling_llama._get_unpad_data
|
99 |
+
def _get_unpad_data(attention_mask):
|
100 |
+
seqlens_in_batch = attention_mask.sum(dim=-1, dtype=torch.int32)
|
101 |
+
indices = torch.nonzero(attention_mask.flatten(), as_tuple=False).flatten()
|
102 |
+
max_seqlen_in_batch = seqlens_in_batch.max().item()
|
103 |
+
cu_seqlens = F.pad(torch.cumsum(seqlens_in_batch, dim=0, dtype=torch.int32), (1, 0))
|
104 |
+
return (
|
105 |
+
indices,
|
106 |
+
cu_seqlens,
|
107 |
+
max_seqlen_in_batch,
|
108 |
+
)
|
109 |
+
|
110 |
+
|
111 |
+
# Copied from transformers.models.gemma.modeling_gemma.GemmaRotaryEmbedding with gemma->phi3, Gemma->Phi3
|
112 |
+
class Phi3RotaryEmbedding(nn.Module):
|
113 |
+
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
|
114 |
+
super().__init__()
|
115 |
+
|
116 |
+
self.dim = dim
|
117 |
+
self.max_position_embeddings = max_position_embeddings
|
118 |
+
self.base = base
|
119 |
+
self.register_buffer("inv_freq", None, persistent=False)
|
120 |
+
|
121 |
+
@torch.no_grad()
|
122 |
+
def forward(self, x, position_ids, seq_len=None):
|
123 |
+
# x: [bs, num_attention_heads, seq_len, head_size]
|
124 |
+
if self.inv_freq is None:
|
125 |
+
self.inv_freq = 1.0 / (
|
126 |
+
self.base ** (torch.arange(0, self.dim, 2, dtype=torch.int64, device=x.device).float() / self.dim)
|
127 |
+
)
|
128 |
+
inv_freq_expanded = self.inv_freq[None, :, None].float().expand(position_ids.shape[0], -1, 1)
|
129 |
+
position_ids_expanded = position_ids[:, None, :].float()
|
130 |
+
# Force float32 since bfloat16 loses precision on long contexts
|
131 |
+
# See https://github.com/huggingface/transformers/pull/29285
|
132 |
+
device_type = x.device.type
|
133 |
+
device_type = device_type if isinstance(device_type, str) and device_type != "mps" else "cpu"
|
134 |
+
with torch.autocast(device_type=device_type, enabled=False):
|
135 |
+
freqs = (inv_freq_expanded.float() @ position_ids_expanded.float()).transpose(1, 2)
|
136 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
137 |
+
cos = emb.cos()
|
138 |
+
sin = emb.sin()
|
139 |
+
return cos.to(dtype=x.dtype), sin.to(dtype=x.dtype)
|
140 |
+
|
141 |
+
|
142 |
+
class Phi3LongRoPEScaledRotaryEmbedding(Phi3RotaryEmbedding):
|
143 |
+
def __init__(self, dim, config, device=None):
|
144 |
+
super().__init__(dim, config.max_position_embeddings, config.rope_theta, device)
|
145 |
+
|
146 |
+
self.short_factor = config.rope_scaling["short_factor"]
|
147 |
+
self.long_factor = config.rope_scaling["long_factor"]
|
148 |
+
self.original_max_position_embeddings = config.original_max_position_embeddings
|
149 |
+
|
150 |
+
@torch.no_grad()
|
151 |
+
def forward(self, x, position_ids, seq_len=None):
|
152 |
+
seq_len = torch.max(position_ids) + 1
|
153 |
+
if seq_len > self.original_max_position_embeddings:
|
154 |
+
ext_factors = torch.tensor(self.long_factor, dtype=torch.float32, device=x.device)
|
155 |
+
else:
|
156 |
+
ext_factors = torch.tensor(self.short_factor, dtype=torch.float32, device=x.device)
|
157 |
+
|
158 |
+
inv_freq_shape = torch.arange(0, self.dim, 2, dtype=torch.int64, device=x.device).float() / self.dim
|
159 |
+
self.inv_freq = 1.0 / (ext_factors * self.base**inv_freq_shape)
|
160 |
+
|
161 |
+
inv_freq_expanded = self.inv_freq[None, :, None].float().expand(position_ids.shape[0], -1, 1)
|
162 |
+
position_ids_expanded = position_ids[:, None, :].float()
|
163 |
+
|
164 |
+
# Force float32 since bfloat16 loses precision on long contexts
|
165 |
+
# See https://github.com/huggingface/transformers/pull/29285
|
166 |
+
device_type = x.device.type
|
167 |
+
device_type = device_type if isinstance(device_type, str) and device_type != "mps" else "cpu"
|
168 |
+
with torch.autocast(device_type=device_type, enabled=False):
|
169 |
+
freqs = (inv_freq_expanded.float() @ position_ids_expanded.float()).transpose(1, 2)
|
170 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
171 |
+
|
172 |
+
scale = self.max_position_embeddings / self.original_max_position_embeddings
|
173 |
+
if scale <= 1.0:
|
174 |
+
scaling_factor = 1.0
|
175 |
+
else:
|
176 |
+
scaling_factor = math.sqrt(1 + math.log(scale) / math.log(self.original_max_position_embeddings))
|
177 |
+
|
178 |
+
cos = emb.cos() * scaling_factor
|
179 |
+
sin = emb.sin() * scaling_factor
|
180 |
+
return cos.to(dtype=x.dtype), sin.to(dtype=x.dtype)
|
181 |
+
|
182 |
+
|
183 |
+
# Copied from transformers.models.llama.modeling_llama.rotate_half
|
184 |
+
def rotate_half(x):
|
185 |
+
"""Rotates half the hidden dims of the input."""
|
186 |
+
x1 = x[..., : x.shape[-1] // 2]
|
187 |
+
x2 = x[..., x.shape[-1] // 2 :]
|
188 |
+
return torch.cat((-x2, x1), dim=-1)
|
189 |
+
|
190 |
+
|
191 |
+
# Copied from transformers.models.llama.modeling_llama.apply_rotary_pos_emb
|
192 |
+
def apply_rotary_pos_emb(q, k, cos, sin, position_ids=None, unsqueeze_dim=1):
|
193 |
+
"""Applies Rotary Position Embedding to the query and key tensors.
|
194 |
+
|
195 |
+
Args:
|
196 |
+
q (`torch.Tensor`): The query tensor.
|
197 |
+
k (`torch.Tensor`): The key tensor.
|
198 |
+
cos (`torch.Tensor`): The cosine part of the rotary embedding.
|
199 |
+
sin (`torch.Tensor`): The sine part of the rotary embedding.
|
200 |
+
position_ids (`torch.Tensor`, *optional*):
|
201 |
+
Deprecated and unused.
|
202 |
+
unsqueeze_dim (`int`, *optional*, defaults to 1):
|
203 |
+
The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
|
204 |
+
sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
|
205 |
+
that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
|
206 |
+
k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
|
207 |
+
cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
|
208 |
+
the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
|
209 |
+
Returns:
|
210 |
+
`tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
|
211 |
+
"""
|
212 |
+
cos = cos.unsqueeze(unsqueeze_dim)
|
213 |
+
sin = sin.unsqueeze(unsqueeze_dim)
|
214 |
+
q_embed = (q * cos) + (rotate_half(q) * sin)
|
215 |
+
k_embed = (k * cos) + (rotate_half(k) * sin)
|
216 |
+
return q_embed, k_embed
|
217 |
+
|
218 |
+
|
219 |
+
class Phi3MLP(nn.Module):
|
220 |
+
def __init__(self, config):
|
221 |
+
super().__init__()
|
222 |
+
|
223 |
+
self.config = config
|
224 |
+
self.gate_up_proj = nn.Linear(config.hidden_size, 2 * config.intermediate_size, bias=False)
|
225 |
+
self.down_proj = nn.Linear(config.intermediate_size, config.hidden_size, bias=False)
|
226 |
+
|
227 |
+
self.activation_fn = ACT2FN[config.hidden_act]
|
228 |
+
|
229 |
+
def forward(self, hidden_states: torch.FloatTensor) -> torch.FloatTensor:
|
230 |
+
up_states = self.gate_up_proj(hidden_states)
|
231 |
+
|
232 |
+
gate, up_states = up_states.chunk(2, dim=-1)
|
233 |
+
up_states = up_states * self.activation_fn(gate)
|
234 |
+
|
235 |
+
return self.down_proj(up_states)
|
236 |
+
|
237 |
+
|
238 |
+
# Copied from transformers.models.llama.modeling_llama.repeat_kv with llama->phi
|
239 |
+
def repeat_kv(hidden_states: torch.Tensor, n_rep: int) -> torch.Tensor:
|
240 |
+
"""
|
241 |
+
This is the equivalent of torch.repeat_interleave(x, dim=1, repeats=n_rep). The hidden states go from (batch,
|
242 |
+
num_key_value_heads, seqlen, head_dim) to (batch, num_attention_heads, seqlen, head_dim)
|
243 |
+
"""
|
244 |
+
batch, num_key_value_heads, slen, head_dim = hidden_states.shape
|
245 |
+
if n_rep == 1:
|
246 |
+
return hidden_states
|
247 |
+
hidden_states = hidden_states[:, :, None, :, :].expand(batch, num_key_value_heads, n_rep, slen, head_dim)
|
248 |
+
return hidden_states.reshape(batch, num_key_value_heads * n_rep, slen, head_dim)
|
249 |
+
|
250 |
+
|
251 |
+
class Phi3Attention(nn.Module):
|
252 |
+
"""Multi-headed attention from 'Attention Is All You Need' paper"""
|
253 |
+
|
254 |
+
def __init__(self, config: Phi3Config, layer_idx: Optional[int] = None):
|
255 |
+
super().__init__()
|
256 |
+
self.config = config
|
257 |
+
self.layer_idx = layer_idx
|
258 |
+
if layer_idx is None:
|
259 |
+
logger.warning_once(
|
260 |
+
f"Instantiating {self.__class__.__name__} without passing a `layer_idx` is not recommended and will "
|
261 |
+
"lead to errors during the forward call if caching is used. Please make sure to provide a `layer_idx` "
|
262 |
+
"when creating this class."
|
263 |
+
)
|
264 |
+
|
265 |
+
self.attention_dropout = config.attention_dropout
|
266 |
+
self.hidden_size = config.hidden_size
|
267 |
+
self.num_heads = config.num_attention_heads
|
268 |
+
self.head_dim = self.hidden_size // self.num_heads
|
269 |
+
self.num_key_value_heads = config.num_key_value_heads
|
270 |
+
self.num_key_value_groups = self.num_heads // self.num_key_value_heads
|
271 |
+
self.max_position_embeddings = config.max_position_embeddings
|
272 |
+
self.original_max_position_embeddings = config.original_max_position_embeddings
|
273 |
+
self.rope_theta = config.rope_theta
|
274 |
+
self.rope_scaling = config.rope_scaling
|
275 |
+
self.is_causal = True
|
276 |
+
|
277 |
+
if (self.head_dim * self.num_heads) != self.hidden_size:
|
278 |
+
raise ValueError(
|
279 |
+
f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
|
280 |
+
f" and `num_heads`: {self.num_heads})."
|
281 |
+
)
|
282 |
+
|
283 |
+
op_size = self.num_heads * self.head_dim + 2 * (self.num_key_value_heads * self.head_dim)
|
284 |
+
self.o_proj = nn.Linear(self.num_heads * self.head_dim, self.hidden_size, bias=False)
|
285 |
+
self.qkv_proj = nn.Linear(self.hidden_size, op_size, bias=False)
|
286 |
+
self._init_rope()
|
287 |
+
|
288 |
+
def _init_rope(self):
|
289 |
+
if self.rope_scaling is None:
|
290 |
+
self.rotary_emb = Phi3RotaryEmbedding(
|
291 |
+
self.head_dim,
|
292 |
+
max_position_embeddings=self.max_position_embeddings,
|
293 |
+
base=self.rope_theta,
|
294 |
+
)
|
295 |
+
else:
|
296 |
+
scaling_type = self.config.rope_scaling["type"]
|
297 |
+
if scaling_type == "longrope":
|
298 |
+
self.rotary_emb = Phi3LongRoPEScaledRotaryEmbedding(self.head_dim, self.config)
|
299 |
+
else:
|
300 |
+
raise ValueError(f"Unknown RoPE scaling type {scaling_type}")
|
301 |
+
|
302 |
+
def forward(
|
303 |
+
self,
|
304 |
+
hidden_states: torch.Tensor,
|
305 |
+
attention_mask: Optional[torch.Tensor] = None,
|
306 |
+
position_ids: Optional[torch.LongTensor] = None,
|
307 |
+
past_key_value: Optional[Cache] = None,
|
308 |
+
output_attentions: bool = False,
|
309 |
+
use_cache: bool = False,
|
310 |
+
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
|
311 |
+
logger.warning_once("You are not running the flash-attention implementation, expect numerical differences.")
|
312 |
+
|
313 |
+
bsz, q_len, _ = hidden_states.size()
|
314 |
+
|
315 |
+
qkv = self.qkv_proj(hidden_states)
|
316 |
+
query_pos = self.num_heads * self.head_dim
|
317 |
+
query_states = qkv[..., :query_pos]
|
318 |
+
key_states = qkv[..., query_pos : query_pos + self.num_key_value_heads * self.head_dim]
|
319 |
+
value_states = qkv[..., query_pos + self.num_key_value_heads * self.head_dim :]
|
320 |
+
|
321 |
+
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
|
322 |
+
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
323 |
+
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
324 |
+
|
325 |
+
kv_seq_len = key_states.shape[-2]
|
326 |
+
if past_key_value is not None:
|
327 |
+
if self.layer_idx is None:
|
328 |
+
raise ValueError(
|
329 |
+
f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
|
330 |
+
"for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
|
331 |
+
"with a layer index."
|
332 |
+
)
|
333 |
+
kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
|
334 |
+
cos, sin = self.rotary_emb(value_states, position_ids, seq_len=kv_seq_len)
|
335 |
+
|
336 |
+
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
|
337 |
+
|
338 |
+
if past_key_value is not None:
|
339 |
+
cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
|
340 |
+
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
|
341 |
+
|
342 |
+
# repeat k/v heads if n_kv_heads < n_heads
|
343 |
+
key_states = repeat_kv(key_states, self.num_key_value_groups)
|
344 |
+
value_states = repeat_kv(value_states, self.num_key_value_groups)
|
345 |
+
|
346 |
+
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
|
347 |
+
|
348 |
+
if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
|
349 |
+
raise ValueError(
|
350 |
+
f"Attention weights should be of size {(bsz, self.num_heads, q_len, kv_seq_len)}, but is"
|
351 |
+
f" {attn_weights.size()}"
|
352 |
+
)
|
353 |
+
|
354 |
+
if attention_mask is not None:
|
355 |
+
if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
|
356 |
+
raise ValueError(
|
357 |
+
f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
|
358 |
+
)
|
359 |
+
attn_weights = attn_weights + attention_mask
|
360 |
+
|
361 |
+
# upcast attention to fp32
|
362 |
+
attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(value_states.dtype)
|
363 |
+
attn_weights = nn.functional.dropout(attn_weights, p=self.attention_dropout, training=self.training)
|
364 |
+
|
365 |
+
attn_output = torch.matmul(attn_weights, value_states)
|
366 |
+
|
367 |
+
if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
|
368 |
+
raise ValueError(
|
369 |
+
f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
|
370 |
+
f" {attn_output.size()}"
|
371 |
+
)
|
372 |
+
|
373 |
+
attn_output = attn_output.transpose(1, 2).contiguous()
|
374 |
+
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
|
375 |
+
|
376 |
+
attn_output = self.o_proj(attn_output)
|
377 |
+
|
378 |
+
if not output_attentions:
|
379 |
+
attn_weights = None
|
380 |
+
|
381 |
+
return attn_output, attn_weights, past_key_value
|
382 |
+
|
383 |
+
|
384 |
+
class Phi3FlashAttention2(Phi3Attention):
|
385 |
+
"""
|
386 |
+
Phi-3 flash attention module. This module inherits from `Phi3Attention` as the weights of the module stays
|
387 |
+
untouched. The only required change would be on the forward pass where it needs to correctly call the public API of
|
388 |
+
flash attention and deal with padding tokens in case the input contains any of them.
|
389 |
+
"""
|
390 |
+
|
391 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaFlashAttention2.__init__
|
392 |
+
def __init__(self, *args, **kwargs):
|
393 |
+
super().__init__(*args, **kwargs)
|
394 |
+
|
395 |
+
# TODO: Should be removed once Flash Attention for RoCm is bumped to 2.1.
|
396 |
+
# flash_attn<2.1 generates top-left aligned causal mask, while what is needed here is bottom-right alignement, that was made default for flash_attn>=2.1. This attribute is used to handle this difference. Reference: https://github.com/Dao-AILab/flash-attention/releases/tag/v2.1.0.
|
397 |
+
# Beware that with flash_attn<2.1, using q_seqlen != k_seqlen (except for the case q_seqlen == 1) produces a wrong mask (top-left).
|
398 |
+
self._flash_attn_uses_top_left_mask = not is_flash_attn_greater_or_equal_2_10()
|
399 |
+
|
400 |
+
def forward(
|
401 |
+
self,
|
402 |
+
hidden_states: torch.Tensor,
|
403 |
+
attention_mask: Optional[torch.LongTensor] = None,
|
404 |
+
position_ids: Optional[torch.LongTensor] = None,
|
405 |
+
past_key_value: Optional[Cache] = None,
|
406 |
+
output_attentions: bool = False,
|
407 |
+
use_cache: bool = False,
|
408 |
+
**kwargs,
|
409 |
+
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
|
410 |
+
# Phi3FlashAttention2 attention does not support output_attentions
|
411 |
+
|
412 |
+
if not _flash_supports_window_size:
|
413 |
+
logger.warning_once(
|
414 |
+
"The current flash attention version does not support sliding window attention. Please use `attn_implementation='eager'` or upgrade flash-attn library."
|
415 |
+
)
|
416 |
+
raise ValueError("The current flash attention version does not support sliding window attention.")
|
417 |
+
|
418 |
+
output_attentions = False
|
419 |
+
|
420 |
+
if "padding_mask" in kwargs:
|
421 |
+
warnings.warn(
|
422 |
+
"Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
|
423 |
+
)
|
424 |
+
|
425 |
+
# overwrite attention_mask with padding_mask
|
426 |
+
attention_mask = kwargs.pop("padding_mask")
|
427 |
+
|
428 |
+
bsz, q_len, _ = hidden_states.size()
|
429 |
+
|
430 |
+
qkv = self.qkv_proj(hidden_states)
|
431 |
+
query_pos = self.num_heads * self.head_dim
|
432 |
+
query_states = qkv[..., :query_pos]
|
433 |
+
key_states = qkv[..., query_pos : query_pos + self.num_key_value_heads * self.head_dim]
|
434 |
+
value_states = qkv[..., query_pos + self.num_key_value_heads * self.head_dim :]
|
435 |
+
|
436 |
+
# Flash attention requires the input to have the shape
|
437 |
+
# batch_size x seq_length x head_dim x hidden_dim
|
438 |
+
# therefore we just need to keep the original shape
|
439 |
+
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
|
440 |
+
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
441 |
+
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
442 |
+
|
443 |
+
kv_seq_len = key_states.shape[-2]
|
444 |
+
if past_key_value is not None:
|
445 |
+
if self.layer_idx is None:
|
446 |
+
raise ValueError(
|
447 |
+
f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
|
448 |
+
"for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
|
449 |
+
"with a layer index."
|
450 |
+
)
|
451 |
+
kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
|
452 |
+
|
453 |
+
# Because the input can be padded, the absolute sequence length depends on the max position id.
|
454 |
+
rotary_seq_len = max(kv_seq_len, position_ids[:, -1].max().item()) + 1
|
455 |
+
cos, sin = self.rotary_emb(value_states, position_ids, seq_len=rotary_seq_len)
|
456 |
+
|
457 |
+
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
|
458 |
+
|
459 |
+
use_sliding_windows = (
|
460 |
+
_flash_supports_window_size
|
461 |
+
and getattr(self.config, "sliding_window", None) is not None
|
462 |
+
and kv_seq_len > self.config.sliding_window
|
463 |
+
)
|
464 |
+
|
465 |
+
if past_key_value is not None:
|
466 |
+
# Activate slicing cache only if the config has a value `sliding_windows` attribute
|
467 |
+
cache_has_contents = past_key_value.get_seq_length(self.layer_idx) > 0
|
468 |
+
if (
|
469 |
+
getattr(self.config, "sliding_window", None) is not None
|
470 |
+
and kv_seq_len > self.config.sliding_window
|
471 |
+
and cache_has_contents
|
472 |
+
):
|
473 |
+
slicing_tokens = 1 - self.config.sliding_window
|
474 |
+
|
475 |
+
past_key = past_key_value[self.layer_idx][0]
|
476 |
+
past_value = past_key_value[self.layer_idx][1]
|
477 |
+
|
478 |
+
past_key = past_key[:, :, slicing_tokens:, :].contiguous()
|
479 |
+
past_value = past_value[:, :, slicing_tokens:, :].contiguous()
|
480 |
+
|
481 |
+
if past_key.shape[-2] != self.config.sliding_window - 1:
|
482 |
+
raise ValueError(
|
483 |
+
f"past key must have a shape of (`batch_size, num_heads, self.config.sliding_window-1, head_dim`), got"
|
484 |
+
f" {past_key.shape}"
|
485 |
+
)
|
486 |
+
|
487 |
+
if attention_mask is not None:
|
488 |
+
attention_mask = attention_mask[:, slicing_tokens:]
|
489 |
+
attention_mask = torch.cat([attention_mask, torch.ones_like(attention_mask[:, -1:])], dim=-1)
|
490 |
+
|
491 |
+
cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
|
492 |
+
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
|
493 |
+
|
494 |
+
# repeat k/v heads if n_kv_heads < n_heads
|
495 |
+
key_states = repeat_kv(key_states, self.num_key_value_groups)
|
496 |
+
value_states = repeat_kv(value_states, self.num_key_value_groups)
|
497 |
+
|
498 |
+
attn_dropout = self.attention_dropout if self.training else 0.0
|
499 |
+
|
500 |
+
# In PEFT, usually we cast the layer norms in float32 for training stability reasons
|
501 |
+
# therefore the input hidden states gets silently casted in float32. Hence, we need
|
502 |
+
# cast them back in the correct dtype just to be sure everything works as expected.
|
503 |
+
# This might slowdown training & inference so it is recommended to not cast the LayerNorms
|
504 |
+
# in fp32.
|
505 |
+
|
506 |
+
if query_states.dtype == torch.float32:
|
507 |
+
if torch.is_autocast_enabled():
|
508 |
+
target_dtype = torch.get_autocast_gpu_dtype()
|
509 |
+
# Handle the case where the model is quantized
|
510 |
+
elif hasattr(self.config, "_pre_quantization_dtype"):
|
511 |
+
target_dtype = self.config._pre_quantization_dtype
|
512 |
+
else:
|
513 |
+
target_dtype = self.qkv_proj.weight.dtype
|
514 |
+
|
515 |
+
logger.warning_once(
|
516 |
+
f"The input hidden states seems to be silently casted in float32, this might be related to"
|
517 |
+
f" the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in"
|
518 |
+
f" {target_dtype}."
|
519 |
+
)
|
520 |
+
|
521 |
+
query_states = query_states.to(target_dtype)
|
522 |
+
key_states = key_states.to(target_dtype)
|
523 |
+
value_states = value_states.to(target_dtype)
|
524 |
+
|
525 |
+
# Reashape to the expected shape for Flash Attention
|
526 |
+
query_states = query_states.transpose(1, 2)
|
527 |
+
key_states = key_states.transpose(1, 2)
|
528 |
+
value_states = value_states.transpose(1, 2)
|
529 |
+
|
530 |
+
attn_output = self._flash_attention_forward(
|
531 |
+
query_states,
|
532 |
+
key_states,
|
533 |
+
value_states,
|
534 |
+
attention_mask,
|
535 |
+
q_len,
|
536 |
+
dropout=attn_dropout,
|
537 |
+
use_sliding_windows=use_sliding_windows,
|
538 |
+
)
|
539 |
+
|
540 |
+
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size).contiguous()
|
541 |
+
attn_output = self.o_proj(attn_output)
|
542 |
+
|
543 |
+
if not output_attentions:
|
544 |
+
attn_weights = None
|
545 |
+
|
546 |
+
return attn_output, attn_weights, past_key_value
|
547 |
+
|
548 |
+
# Copied from transformers.models.mistral.modeling_mistral.MistralFlashAttention2._flash_attention_forward
|
549 |
+
def _flash_attention_forward(
|
550 |
+
self,
|
551 |
+
query_states,
|
552 |
+
key_states,
|
553 |
+
value_states,
|
554 |
+
attention_mask,
|
555 |
+
query_length,
|
556 |
+
dropout=0.0,
|
557 |
+
softmax_scale=None,
|
558 |
+
use_sliding_windows=False,
|
559 |
+
):
|
560 |
+
"""
|
561 |
+
Calls the forward method of Flash Attention - if the input hidden states contain at least one padding token
|
562 |
+
first unpad the input, then computes the attention scores and pad the final attention scores.
|
563 |
+
|
564 |
+
Args:
|
565 |
+
query_states (`torch.Tensor`):
|
566 |
+
Input query states to be passed to Flash Attention API
|
567 |
+
key_states (`torch.Tensor`):
|
568 |
+
Input key states to be passed to Flash Attention API
|
569 |
+
value_states (`torch.Tensor`):
|
570 |
+
Input value states to be passed to Flash Attention API
|
571 |
+
attention_mask (`torch.Tensor`):
|
572 |
+
The padding mask - corresponds to a tensor of size `(batch_size, seq_len)` where 0 stands for the
|
573 |
+
position of padding tokens and 1 for the position of non-padding tokens.
|
574 |
+
dropout (`float`):
|
575 |
+
Attention dropout
|
576 |
+
softmax_scale (`float`, *optional*):
|
577 |
+
The scaling of QK^T before applying softmax. Default to 1 / sqrt(head_dim)
|
578 |
+
use_sliding_windows (`bool`, *optional*):
|
579 |
+
Whether to activate sliding window attention.
|
580 |
+
"""
|
581 |
+
if not self._flash_attn_uses_top_left_mask:
|
582 |
+
causal = self.is_causal
|
583 |
+
else:
|
584 |
+
# TODO: Remove the `query_length != 1` check once Flash Attention for RoCm is bumped to 2.1. For details, please see the comment in LlamaFlashAttention2 __init__.
|
585 |
+
causal = self.is_causal and query_length != 1
|
586 |
+
|
587 |
+
# Contains at least one padding token in the sequence
|
588 |
+
if attention_mask is not None:
|
589 |
+
batch_size = query_states.shape[0]
|
590 |
+
query_states, key_states, value_states, indices_q, cu_seq_lens, max_seq_lens = self._upad_input(
|
591 |
+
query_states, key_states, value_states, attention_mask, query_length
|
592 |
+
)
|
593 |
+
|
594 |
+
cu_seqlens_q, cu_seqlens_k = cu_seq_lens
|
595 |
+
max_seqlen_in_batch_q, max_seqlen_in_batch_k = max_seq_lens
|
596 |
+
|
597 |
+
if not use_sliding_windows:
|
598 |
+
attn_output_unpad = flash_attn_varlen_func(
|
599 |
+
query_states,
|
600 |
+
key_states,
|
601 |
+
value_states,
|
602 |
+
cu_seqlens_q=cu_seqlens_q,
|
603 |
+
cu_seqlens_k=cu_seqlens_k,
|
604 |
+
max_seqlen_q=max_seqlen_in_batch_q,
|
605 |
+
max_seqlen_k=max_seqlen_in_batch_k,
|
606 |
+
dropout_p=dropout,
|
607 |
+
softmax_scale=softmax_scale,
|
608 |
+
causal=causal,
|
609 |
+
)
|
610 |
+
else:
|
611 |
+
attn_output_unpad = flash_attn_varlen_func(
|
612 |
+
query_states,
|
613 |
+
key_states,
|
614 |
+
value_states,
|
615 |
+
cu_seqlens_q=cu_seqlens_q,
|
616 |
+
cu_seqlens_k=cu_seqlens_k,
|
617 |
+
max_seqlen_q=max_seqlen_in_batch_q,
|
618 |
+
max_seqlen_k=max_seqlen_in_batch_k,
|
619 |
+
dropout_p=dropout,
|
620 |
+
softmax_scale=softmax_scale,
|
621 |
+
causal=causal,
|
622 |
+
window_size=(self.config.sliding_window, self.config.sliding_window),
|
623 |
+
)
|
624 |
+
|
625 |
+
attn_output = pad_input(attn_output_unpad, indices_q, batch_size, query_length)
|
626 |
+
else:
|
627 |
+
if not use_sliding_windows:
|
628 |
+
attn_output = flash_attn_func(
|
629 |
+
query_states,
|
630 |
+
key_states,
|
631 |
+
value_states,
|
632 |
+
dropout,
|
633 |
+
softmax_scale=softmax_scale,
|
634 |
+
causal=causal,
|
635 |
+
)
|
636 |
+
else:
|
637 |
+
attn_output = flash_attn_func(
|
638 |
+
query_states,
|
639 |
+
key_states,
|
640 |
+
value_states,
|
641 |
+
dropout,
|
642 |
+
softmax_scale=softmax_scale,
|
643 |
+
causal=causal,
|
644 |
+
window_size=(self.config.sliding_window, self.config.sliding_window),
|
645 |
+
)
|
646 |
+
|
647 |
+
return attn_output
|
648 |
+
|
649 |
+
# Copied from transformers.models.mistral.modeling_mistral.MistralFlashAttention2._upad_input
|
650 |
+
def _upad_input(self, query_layer, key_layer, value_layer, attention_mask, query_length):
|
651 |
+
batch_size, kv_seq_len, num_heads, head_dim = key_layer.shape
|
652 |
+
|
653 |
+
# On the first iteration we need to properly re-create the padding mask
|
654 |
+
# by slicing it on the proper place
|
655 |
+
if kv_seq_len != attention_mask.shape[-1]:
|
656 |
+
attention_mask_num_tokens = attention_mask.shape[-1]
|
657 |
+
attention_mask = attention_mask[:, attention_mask_num_tokens - kv_seq_len :]
|
658 |
+
|
659 |
+
indices_k, cu_seqlens_k, max_seqlen_in_batch_k = _get_unpad_data(attention_mask)
|
660 |
+
|
661 |
+
key_layer = index_first_axis(key_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k)
|
662 |
+
value_layer = index_first_axis(value_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k)
|
663 |
+
|
664 |
+
if query_length == kv_seq_len:
|
665 |
+
query_layer = index_first_axis(
|
666 |
+
query_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k
|
667 |
+
)
|
668 |
+
cu_seqlens_q = cu_seqlens_k
|
669 |
+
max_seqlen_in_batch_q = max_seqlen_in_batch_k
|
670 |
+
indices_q = indices_k
|
671 |
+
elif query_length == 1:
|
672 |
+
max_seqlen_in_batch_q = 1
|
673 |
+
cu_seqlens_q = torch.arange(
|
674 |
+
batch_size + 1, dtype=torch.int32, device=query_layer.device
|
675 |
+
) # There is a memcpy here, that is very bad.
|
676 |
+
indices_q = cu_seqlens_q[:-1]
|
677 |
+
query_layer = query_layer.squeeze(1)
|
678 |
+
else:
|
679 |
+
# The -q_len: slice assumes left padding.
|
680 |
+
attention_mask = attention_mask[:, -query_length:]
|
681 |
+
query_layer, indices_q, cu_seqlens_q, max_seqlen_in_batch_q = unpad_input(query_layer, attention_mask)
|
682 |
+
|
683 |
+
return (
|
684 |
+
query_layer,
|
685 |
+
key_layer,
|
686 |
+
value_layer,
|
687 |
+
indices_q,
|
688 |
+
(cu_seqlens_q, cu_seqlens_k),
|
689 |
+
(max_seqlen_in_batch_q, max_seqlen_in_batch_k),
|
690 |
+
)
|
691 |
+
|
692 |
+
|
693 |
+
# copied from transformers.models.llama.modeling_llama.LlamaSdpaAttention with Llama->Phi3
|
694 |
+
# TODO @Arthur no longer copied from LLama after static cache
|
695 |
+
class Phi3SdpaAttention(Phi3Attention):
|
696 |
+
"""
|
697 |
+
Phi3 attention module using torch.nn.functional.scaled_dot_product_attention. This module inherits from
|
698 |
+
`Phi3Attention` as the weights of the module stays untouched. The only changes are on the forward pass to adapt to
|
699 |
+
SDPA API.
|
700 |
+
"""
|
701 |
+
|
702 |
+
# Adapted from Phi3Attention.forward
|
703 |
+
def forward(
|
704 |
+
self,
|
705 |
+
hidden_states: torch.Tensor,
|
706 |
+
attention_mask: Optional[torch.Tensor] = None,
|
707 |
+
position_ids: Optional[torch.LongTensor] = None,
|
708 |
+
past_key_value: Optional[Cache] = None,
|
709 |
+
output_attentions: bool = False,
|
710 |
+
use_cache: bool = False,
|
711 |
+
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
|
712 |
+
if output_attentions:
|
713 |
+
# TODO: Improve this warning with e.g. `model.config.attn_implementation = "manual"` once this is implemented.
|
714 |
+
logger.warning_once(
|
715 |
+
"Phi3Model is using Phi3SdpaAttention, but `torch.nn.functional.scaled_dot_product_attention` does not support `output_attentions=True`. Falling back to the manual attention implementation, "
|
716 |
+
'but specifying the manual implementation will be required from Transformers version v5.0.0 onwards. This warning can be removed using the argument `attn_implementation="eager"` when loading the model.'
|
717 |
+
)
|
718 |
+
return super().forward(
|
719 |
+
hidden_states=hidden_states,
|
720 |
+
attention_mask=attention_mask,
|
721 |
+
position_ids=position_ids,
|
722 |
+
past_key_value=past_key_value,
|
723 |
+
output_attentions=output_attentions,
|
724 |
+
use_cache=use_cache,
|
725 |
+
)
|
726 |
+
|
727 |
+
bsz, q_len, _ = hidden_states.size()
|
728 |
+
|
729 |
+
qkv = self.qkv_proj(hidden_states)
|
730 |
+
query_pos = self.num_heads * self.head_dim
|
731 |
+
query_states = qkv[..., :query_pos]
|
732 |
+
key_states = qkv[..., query_pos : query_pos + self.num_key_value_heads * self.head_dim]
|
733 |
+
value_states = qkv[..., query_pos + self.num_key_value_heads * self.head_dim :]
|
734 |
+
|
735 |
+
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
|
736 |
+
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
737 |
+
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
738 |
+
|
739 |
+
kv_seq_len = key_states.shape[-2]
|
740 |
+
if past_key_value is not None:
|
741 |
+
kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
|
742 |
+
cos, sin = self.rotary_emb(value_states, position_ids, seq_len=kv_seq_len)
|
743 |
+
|
744 |
+
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
|
745 |
+
|
746 |
+
if past_key_value is not None:
|
747 |
+
cache_kwargs = {"sin": sin, "cos": cos} # Specific to RoPE models
|
748 |
+
key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
|
749 |
+
|
750 |
+
key_states = repeat_kv(key_states, self.num_key_value_groups)
|
751 |
+
value_states = repeat_kv(value_states, self.num_key_value_groups)
|
752 |
+
|
753 |
+
if attention_mask is not None:
|
754 |
+
if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
|
755 |
+
raise ValueError(
|
756 |
+
f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
|
757 |
+
)
|
758 |
+
|
759 |
+
# SDPA with memory-efficient backend is currently (torch==2.1.2) bugged with non-contiguous inputs with custom attn_mask,
|
760 |
+
# Reference: https://github.com/pytorch/pytorch/issues/112577.
|
761 |
+
if query_states.device.type == "cuda" and attention_mask is not None:
|
762 |
+
query_states = query_states.contiguous()
|
763 |
+
key_states = key_states.contiguous()
|
764 |
+
value_states = value_states.contiguous()
|
765 |
+
|
766 |
+
attn_output = torch.nn.functional.scaled_dot_product_attention(
|
767 |
+
query_states,
|
768 |
+
key_states,
|
769 |
+
value_states,
|
770 |
+
attn_mask=attention_mask,
|
771 |
+
dropout_p=self.attention_dropout if self.training else 0.0,
|
772 |
+
# The q_len > 1 is necessary to match with AttentionMaskConverter.to_causal_4d that does not create a causal mask in case q_len == 1.
|
773 |
+
is_causal=self.is_causal and attention_mask is None and q_len > 1,
|
774 |
+
)
|
775 |
+
|
776 |
+
attn_output = attn_output.transpose(1, 2).contiguous()
|
777 |
+
attn_output = attn_output.view(bsz, q_len, self.hidden_size)
|
778 |
+
|
779 |
+
attn_output = self.o_proj(attn_output)
|
780 |
+
|
781 |
+
return attn_output, None, past_key_value
|
782 |
+
|
783 |
+
|
784 |
+
PHI3_ATTENTION_CLASSES = {
|
785 |
+
"eager": Phi3Attention,
|
786 |
+
"flash_attention_2": Phi3FlashAttention2,
|
787 |
+
"sdpa": Phi3SdpaAttention,
|
788 |
+
}
|
789 |
+
|
790 |
+
|
791 |
+
class Phi3DecoderLayer(nn.Module):
|
792 |
+
def __init__(self, config: Phi3Config, layer_idx: int):
|
793 |
+
super().__init__()
|
794 |
+
|
795 |
+
self.config = config
|
796 |
+
self.self_attn = PHI3_ATTENTION_CLASSES[config._attn_implementation](config, layer_idx=layer_idx)
|
797 |
+
|
798 |
+
self.mlp = Phi3MLP(config)
|
799 |
+
self.input_layernorm = Phi3RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
800 |
+
|
801 |
+
self.resid_attn_dropout = nn.Dropout(config.resid_pdrop)
|
802 |
+
self.resid_mlp_dropout = nn.Dropout(config.resid_pdrop)
|
803 |
+
self.post_attention_layernorm = Phi3RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
804 |
+
|
805 |
+
def forward(
|
806 |
+
self,
|
807 |
+
hidden_states: torch.Tensor,
|
808 |
+
attention_mask: Optional[torch.Tensor] = None,
|
809 |
+
position_ids: Optional[torch.LongTensor] = None,
|
810 |
+
past_key_value: Optional[Tuple[torch.Tensor]] = None,
|
811 |
+
output_attentions: Optional[bool] = False,
|
812 |
+
use_cache: Optional[bool] = False,
|
813 |
+
**kwargs,
|
814 |
+
) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
|
815 |
+
if "padding_mask" in kwargs:
|
816 |
+
warnings.warn(
|
817 |
+
"Passing `padding_mask` is deprecated and will be removed in v4.37. Please make sure use `attention_mask` instead.`"
|
818 |
+
)
|
819 |
+
"""
|
820 |
+
Args:
|
821 |
+
hidden_states (`torch.FloatTensor`):
|
822 |
+
input to the layer of shape `(batch, seq_len, embed_dim)`
|
823 |
+
attention_mask (`torch.FloatTensor`, *optional*): attention mask of size
|
824 |
+
`(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
|
825 |
+
position_ids (`torch.LongTensor` of shape `({0})`, *optional*):
|
826 |
+
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range
|
827 |
+
`[0, config.n_positions - 1]`. [What are position IDs?](../glossary#position-ids)
|
828 |
+
output_attentions (`bool`, *optional*):
|
829 |
+
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
|
830 |
+
returned tensors for more detail.
|
831 |
+
use_cache (`bool`, *optional*):
|
832 |
+
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
|
833 |
+
(see `past_key_values`).
|
834 |
+
past_key_value (`Tuple(torch.FloatTensor)`, *optional*): cached past key and value projection states
|
835 |
+
"""
|
836 |
+
|
837 |
+
residual = hidden_states
|
838 |
+
|
839 |
+
hidden_states = self.input_layernorm(hidden_states)
|
840 |
+
|
841 |
+
# Self Attention
|
842 |
+
attn_outputs, self_attn_weights, present_key_value = self.self_attn(
|
843 |
+
hidden_states=hidden_states,
|
844 |
+
attention_mask=attention_mask,
|
845 |
+
position_ids=position_ids,
|
846 |
+
past_key_value=past_key_value,
|
847 |
+
output_attentions=output_attentions,
|
848 |
+
use_cache=use_cache,
|
849 |
+
)
|
850 |
+
|
851 |
+
hidden_states = residual + self.resid_attn_dropout(attn_outputs)
|
852 |
+
|
853 |
+
residual = hidden_states
|
854 |
+
hidden_states = self.post_attention_layernorm(hidden_states)
|
855 |
+
hidden_states = self.mlp(hidden_states)
|
856 |
+
hidden_states = residual + self.resid_mlp_dropout(hidden_states)
|
857 |
+
|
858 |
+
outputs = (hidden_states,)
|
859 |
+
|
860 |
+
if output_attentions:
|
861 |
+
outputs += (self_attn_weights,)
|
862 |
+
|
863 |
+
if use_cache:
|
864 |
+
outputs += (present_key_value,)
|
865 |
+
|
866 |
+
return outputs
|
867 |
+
|
868 |
+
|
869 |
+
PHI3_START_DOCSTRING = r"""
|
870 |
+
This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
|
871 |
+
library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
|
872 |
+
etc.)
|
873 |
+
|
874 |
+
This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
|
875 |
+
Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
|
876 |
+
and behavior.
|
877 |
+
|
878 |
+
Parameters:
|
879 |
+
config ([`Phi3Config`]):
|
880 |
+
Model configuration class with all the parameters of the model. Initializing with a config file does not
|
881 |
+
load the weights associated with the model, only the configuration. Check out the
|
882 |
+
[`~PreTrainedModel.from_pretrained`] method to load the model weights.
|
883 |
+
"""
|
884 |
+
|
885 |
+
|
886 |
+
@add_start_docstrings(
|
887 |
+
"The bare Phi-3 model outputting raw hidden-states without any specific head on top.",
|
888 |
+
PHI3_START_DOCSTRING,
|
889 |
+
)
|
890 |
+
class Phi3PreTrainedModel(PreTrainedModel):
|
891 |
+
config_class = Phi3Config
|
892 |
+
base_model_prefix = "model"
|
893 |
+
supports_gradient_checkpointing = True
|
894 |
+
_no_split_modules = ["Phi3DecoderLayer"]
|
895 |
+
_skip_keys_device_placement = "past_key_values"
|
896 |
+
_supports_flash_attn_2 = True
|
897 |
+
_supports_sdpa = False
|
898 |
+
_supports_cache_class = True
|
899 |
+
|
900 |
+
_version = "0.0.5"
|
901 |
+
|
902 |
+
def _init_weights(self, module):
|
903 |
+
std = self.config.initializer_range
|
904 |
+
if isinstance(module, nn.Linear):
|
905 |
+
module.weight.data.normal_(mean=0.0, std=std)
|
906 |
+
if module.bias is not None:
|
907 |
+
module.bias.data.zero_()
|
908 |
+
elif isinstance(module, nn.Embedding):
|
909 |
+
module.weight.data.normal_(mean=0.0, std=std)
|
910 |
+
if module.padding_idx is not None:
|
911 |
+
module.weight.data[module.padding_idx].zero_()
|
912 |
+
|
913 |
+
|
914 |
+
PHI3_INPUTS_DOCSTRING = r"""
|
915 |
+
Args:
|
916 |
+
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
|
917 |
+
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
|
918 |
+
it.
|
919 |
+
|
920 |
+
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
|
921 |
+
[`PreTrainedTokenizer.__call__`] for details.
|
922 |
+
|
923 |
+
[What are input IDs?](../glossary#input-ids)
|
924 |
+
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
|
925 |
+
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
|
926 |
+
|
927 |
+
- 1 for tokens that are **not masked**,
|
928 |
+
- 0 for tokens that are **masked**.
|
929 |
+
|
930 |
+
[What are attention masks?](../glossary#attention-mask)
|
931 |
+
|
932 |
+
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
|
933 |
+
[`PreTrainedTokenizer.__call__`] for details.
|
934 |
+
|
935 |
+
If `past_key_values` is used, optionally only the last `input_ids` have to be input (see
|
936 |
+
`past_key_values`).
|
937 |
+
|
938 |
+
If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]
|
939 |
+
and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more
|
940 |
+
information on the default strategy.
|
941 |
+
|
942 |
+
- 1 indicates the head is **not masked**,
|
943 |
+
- 0 indicates the head is **masked**.
|
944 |
+
position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
|
945 |
+
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
|
946 |
+
config.n_positions - 1]`.
|
947 |
+
|
948 |
+
[What are position IDs?](../glossary#position-ids)
|
949 |
+
past_key_values (`Cache` or `tuple(tuple(torch.FloatTensor))`, *optional*):
|
950 |
+
Pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
|
951 |
+
blocks) that can be used to speed up sequential decoding. This typically consists in the `past_key_values`
|
952 |
+
returned by the model at a previous stage of decoding, when `use_cache=True` or `config.use_cache=True`.
|
953 |
+
|
954 |
+
Two formats are allowed:
|
955 |
+
- a [`~cache_utils.Cache`] instance;
|
956 |
+
- Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of
|
957 |
+
shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`). This is also known as the legacy
|
958 |
+
cache format.
|
959 |
+
|
960 |
+
The model will output the same cache format that is fed as input. If no `past_key_values` are passed, the
|
961 |
+
legacy cache format will be returned.
|
962 |
+
|
963 |
+
If `past_key_values` are used, the user can optionally input only the last `input_ids` (those that don't
|
964 |
+
have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `input_ids`
|
965 |
+
of shape `(batch_size, sequence_length)`.
|
966 |
+
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
|
967 |
+
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
|
968 |
+
is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
|
969 |
+
model's internal embedding lookup matrix.
|
970 |
+
use_cache (`bool`, *optional*):
|
971 |
+
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
|
972 |
+
`past_key_values`).
|
973 |
+
output_attentions (`bool`, *optional*):
|
974 |
+
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
|
975 |
+
tensors for more detail.
|
976 |
+
output_hidden_states (`bool`, *optional*):
|
977 |
+
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
|
978 |
+
more detail.
|
979 |
+
return_dict (`bool`, *optional*):
|
980 |
+
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
|
981 |
+
"""
|
982 |
+
|
983 |
+
|
984 |
+
@add_start_docstrings(
|
985 |
+
"The bare Phi-3 model outputting raw hidden-states without any specific head on top.",
|
986 |
+
PHI3_START_DOCSTRING,
|
987 |
+
)
|
988 |
+
class Phi3Model(Phi3PreTrainedModel):
|
989 |
+
"""
|
990 |
+
Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`Phi3DecoderLayer`]
|
991 |
+
|
992 |
+
Args:
|
993 |
+
config: Phi3Config
|
994 |
+
"""
|
995 |
+
|
996 |
+
def __init__(self, config: Phi3Config):
|
997 |
+
super().__init__(config)
|
998 |
+
self.padding_idx = config.pad_token_id
|
999 |
+
self.vocab_size = config.vocab_size
|
1000 |
+
|
1001 |
+
self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
|
1002 |
+
self.embed_dropout = nn.Dropout(config.embd_pdrop)
|
1003 |
+
self.layers = nn.ModuleList(
|
1004 |
+
[Phi3DecoderLayer(config, layer_idx) for layer_idx in range(config.num_hidden_layers)]
|
1005 |
+
)
|
1006 |
+
self._attn_implementation = config._attn_implementation
|
1007 |
+
self.norm = Phi3RMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
1008 |
+
|
1009 |
+
self.gradient_checkpointing = False
|
1010 |
+
# Initialize weights and apply final processing
|
1011 |
+
self.post_init()
|
1012 |
+
|
1013 |
+
def get_input_embeddings(self):
|
1014 |
+
return self.embed_tokens
|
1015 |
+
|
1016 |
+
def set_input_embeddings(self, value):
|
1017 |
+
self.embed_tokens = value
|
1018 |
+
|
1019 |
+
@add_start_docstrings_to_model_forward(PHI3_INPUTS_DOCSTRING)
|
1020 |
+
def forward(
|
1021 |
+
self,
|
1022 |
+
input_ids: torch.LongTensor = None,
|
1023 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1024 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1025 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1026 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1027 |
+
use_cache: Optional[bool] = None,
|
1028 |
+
output_attentions: Optional[bool] = None,
|
1029 |
+
output_hidden_states: Optional[bool] = None,
|
1030 |
+
return_dict: Optional[bool] = None,
|
1031 |
+
) -> Union[Tuple, BaseModelOutputWithPast]:
|
1032 |
+
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
|
1033 |
+
output_hidden_states = (
|
1034 |
+
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
|
1035 |
+
)
|
1036 |
+
use_cache = use_cache if use_cache is not None else self.config.use_cache
|
1037 |
+
|
1038 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1039 |
+
|
1040 |
+
# retrieve input_ids and inputs_embeds
|
1041 |
+
if input_ids is not None and inputs_embeds is not None:
|
1042 |
+
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
|
1043 |
+
elif input_ids is not None:
|
1044 |
+
batch_size, seq_length = input_ids.shape[:2]
|
1045 |
+
elif inputs_embeds is not None:
|
1046 |
+
batch_size, seq_length = inputs_embeds.shape[:2]
|
1047 |
+
else:
|
1048 |
+
raise ValueError("You have to specify either input_ids or inputs_embeds")
|
1049 |
+
|
1050 |
+
past_key_values_length = 0
|
1051 |
+
|
1052 |
+
if self.gradient_checkpointing and self.training:
|
1053 |
+
if use_cache:
|
1054 |
+
logger.warning_once(
|
1055 |
+
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
|
1056 |
+
)
|
1057 |
+
use_cache = False
|
1058 |
+
|
1059 |
+
if use_cache:
|
1060 |
+
use_legacy_cache = not isinstance(past_key_values, Cache)
|
1061 |
+
if use_legacy_cache:
|
1062 |
+
past_key_values = DynamicCache.from_legacy_cache(past_key_values)
|
1063 |
+
past_key_values_length = past_key_values.get_usable_length(seq_length)
|
1064 |
+
|
1065 |
+
if position_ids is None:
|
1066 |
+
device = input_ids.device if input_ids is not None else inputs_embeds.device
|
1067 |
+
position_ids = torch.arange(
|
1068 |
+
past_key_values_length, seq_length + past_key_values_length, dtype=torch.long, device=device
|
1069 |
+
)
|
1070 |
+
position_ids = position_ids.unsqueeze(0).view(-1, seq_length)
|
1071 |
+
else:
|
1072 |
+
position_ids = position_ids.view(-1, seq_length).long()
|
1073 |
+
|
1074 |
+
if inputs_embeds is None:
|
1075 |
+
inputs_embeds = self.embed_tokens(input_ids)
|
1076 |
+
|
1077 |
+
if attention_mask is not None and self._attn_implementation == "flash_attention_2" and use_cache:
|
1078 |
+
is_padding_right = attention_mask[:, -1].sum().item() != batch_size
|
1079 |
+
if is_padding_right:
|
1080 |
+
raise ValueError(
|
1081 |
+
"You are attempting to perform batched generation with padding_side='right'"
|
1082 |
+
" this may lead to unexpected behaviour for Flash Attention version of Phi3. Make sure to "
|
1083 |
+
" call `tokenizer.padding_side = 'left'` before tokenizing the input. "
|
1084 |
+
)
|
1085 |
+
|
1086 |
+
if self._attn_implementation == "flash_attention_2":
|
1087 |
+
# 2d mask is passed through the layers
|
1088 |
+
attention_mask = attention_mask if (attention_mask is not None and 0 in attention_mask) else None
|
1089 |
+
else:
|
1090 |
+
# 4d mask is passed through the layers
|
1091 |
+
attention_mask = _prepare_4d_causal_attention_mask(
|
1092 |
+
attention_mask,
|
1093 |
+
(batch_size, seq_length),
|
1094 |
+
inputs_embeds,
|
1095 |
+
past_key_values_length,
|
1096 |
+
sliding_window=self.config.sliding_window,
|
1097 |
+
)
|
1098 |
+
|
1099 |
+
hidden_states = inputs_embeds
|
1100 |
+
|
1101 |
+
# decoder layers
|
1102 |
+
all_hidden_states = () if output_hidden_states else None
|
1103 |
+
all_self_attns = () if output_attentions else None
|
1104 |
+
next_decoder_cache = None
|
1105 |
+
|
1106 |
+
for decoder_layer in self.layers:
|
1107 |
+
if output_hidden_states:
|
1108 |
+
all_hidden_states += (hidden_states,)
|
1109 |
+
|
1110 |
+
if self.gradient_checkpointing and self.training:
|
1111 |
+
layer_outputs = self._gradient_checkpointing_func(
|
1112 |
+
decoder_layer.__call__,
|
1113 |
+
hidden_states,
|
1114 |
+
attention_mask,
|
1115 |
+
position_ids,
|
1116 |
+
past_key_values,
|
1117 |
+
output_attentions,
|
1118 |
+
use_cache,
|
1119 |
+
)
|
1120 |
+
else:
|
1121 |
+
layer_outputs = decoder_layer(
|
1122 |
+
hidden_states,
|
1123 |
+
attention_mask=attention_mask,
|
1124 |
+
position_ids=position_ids,
|
1125 |
+
past_key_value=past_key_values,
|
1126 |
+
output_attentions=output_attentions,
|
1127 |
+
use_cache=use_cache,
|
1128 |
+
)
|
1129 |
+
|
1130 |
+
hidden_states = layer_outputs[0]
|
1131 |
+
|
1132 |
+
if use_cache:
|
1133 |
+
next_decoder_cache = layer_outputs[2 if output_attentions else 1]
|
1134 |
+
|
1135 |
+
if output_attentions:
|
1136 |
+
all_self_attns += (layer_outputs[1],)
|
1137 |
+
|
1138 |
+
hidden_states = self.norm(hidden_states)
|
1139 |
+
|
1140 |
+
# add hidden states from the last decoder layer
|
1141 |
+
if output_hidden_states:
|
1142 |
+
all_hidden_states += (hidden_states,)
|
1143 |
+
|
1144 |
+
next_cache = None
|
1145 |
+
if use_cache:
|
1146 |
+
next_cache = next_decoder_cache.to_legacy_cache() if use_legacy_cache else next_decoder_cache
|
1147 |
+
if not return_dict:
|
1148 |
+
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
|
1149 |
+
return BaseModelOutputWithPast(
|
1150 |
+
last_hidden_state=hidden_states,
|
1151 |
+
past_key_values=next_cache,
|
1152 |
+
hidden_states=all_hidden_states,
|
1153 |
+
attentions=all_self_attns,
|
1154 |
+
)
|
1155 |
+
|
1156 |
+
|
1157 |
+
class Phi3ForCausalLM(Phi3PreTrainedModel):
|
1158 |
+
_tied_weights_keys = ["lm_head.weight"]
|
1159 |
+
|
1160 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.__init__ with Llama->Phi3
|
1161 |
+
def __init__(self, config):
|
1162 |
+
super().__init__(config)
|
1163 |
+
self.model = Phi3Model(config)
|
1164 |
+
self.vocab_size = config.vocab_size
|
1165 |
+
self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
|
1166 |
+
|
1167 |
+
# Initialize weights and apply final processing
|
1168 |
+
self.post_init()
|
1169 |
+
|
1170 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_input_embeddings
|
1171 |
+
def get_input_embeddings(self):
|
1172 |
+
return self.model.embed_tokens
|
1173 |
+
|
1174 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_input_embeddings
|
1175 |
+
def set_input_embeddings(self, value):
|
1176 |
+
self.model.embed_tokens = value
|
1177 |
+
|
1178 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_output_embeddings
|
1179 |
+
def get_output_embeddings(self):
|
1180 |
+
return self.lm_head
|
1181 |
+
|
1182 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_output_embeddings
|
1183 |
+
def set_output_embeddings(self, new_embeddings):
|
1184 |
+
self.lm_head = new_embeddings
|
1185 |
+
|
1186 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_decoder
|
1187 |
+
def set_decoder(self, decoder):
|
1188 |
+
self.model = decoder
|
1189 |
+
|
1190 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_decoder
|
1191 |
+
def get_decoder(self):
|
1192 |
+
return self.model
|
1193 |
+
|
1194 |
+
# Ignore copy
|
1195 |
+
@add_start_docstrings_to_model_forward(PHI3_INPUTS_DOCSTRING)
|
1196 |
+
@replace_return_docstrings(output_type=CausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
|
1197 |
+
def forward(
|
1198 |
+
self,
|
1199 |
+
input_ids: torch.LongTensor = None,
|
1200 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1201 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1202 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1203 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1204 |
+
labels: Optional[torch.LongTensor] = None,
|
1205 |
+
use_cache: Optional[bool] = None,
|
1206 |
+
output_attentions: Optional[bool] = None,
|
1207 |
+
output_hidden_states: Optional[bool] = None,
|
1208 |
+
return_dict: Optional[bool] = None,
|
1209 |
+
) -> Union[Tuple, CausalLMOutputWithPast]:
|
1210 |
+
r"""
|
1211 |
+
Args:
|
1212 |
+
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
|
1213 |
+
Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
|
1214 |
+
config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
|
1215 |
+
(masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
|
1216 |
+
|
1217 |
+
Returns:
|
1218 |
+
|
1219 |
+
Example:
|
1220 |
+
|
1221 |
+
```python
|
1222 |
+
>>> from transformers import AutoTokenizer, Phi3ForCausalLM
|
1223 |
+
|
1224 |
+
>>> model = Phi3ForCausalLM.from_pretrained("microsoft/phi-3-mini-4k-instruct")
|
1225 |
+
>>> tokenizer = AutoTokenizer.from_pretrained("microsoft/phi-3-mini-4k-instruct")
|
1226 |
+
|
1227 |
+
>>> prompt = "This is an example script ."
|
1228 |
+
>>> inputs = tokenizer(prompt, return_tensors="pt")
|
1229 |
+
|
1230 |
+
>>> # Generate
|
1231 |
+
>>> generate_ids = model.generate(inputs.input_ids, max_length=30)
|
1232 |
+
>>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
|
1233 |
+
'This is an example script .\n Certainly! Below is a sample script that demonstrates a simple task, such as calculating the sum'
|
1234 |
+
```"""
|
1235 |
+
|
1236 |
+
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
|
1237 |
+
output_hidden_states = (
|
1238 |
+
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
|
1239 |
+
)
|
1240 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1241 |
+
|
1242 |
+
# decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
|
1243 |
+
outputs = self.model(
|
1244 |
+
input_ids=input_ids,
|
1245 |
+
attention_mask=attention_mask,
|
1246 |
+
position_ids=position_ids,
|
1247 |
+
past_key_values=past_key_values,
|
1248 |
+
inputs_embeds=inputs_embeds,
|
1249 |
+
use_cache=use_cache,
|
1250 |
+
output_attentions=output_attentions,
|
1251 |
+
output_hidden_states=output_hidden_states,
|
1252 |
+
return_dict=return_dict,
|
1253 |
+
)
|
1254 |
+
|
1255 |
+
hidden_states = outputs[0]
|
1256 |
+
logits = self.lm_head(hidden_states)
|
1257 |
+
logits = logits.float()
|
1258 |
+
|
1259 |
+
loss = None
|
1260 |
+
if labels is not None:
|
1261 |
+
# Shift so that tokens < n predict n
|
1262 |
+
shift_logits = logits[..., :-1, :].contiguous()
|
1263 |
+
shift_labels = labels[..., 1:].contiguous()
|
1264 |
+
# Flatten the tokens
|
1265 |
+
loss_fct = CrossEntropyLoss()
|
1266 |
+
shift_logits = shift_logits.view(-1, self.config.vocab_size)
|
1267 |
+
shift_labels = shift_labels.view(-1)
|
1268 |
+
# Enable model parallelism
|
1269 |
+
shift_labels = shift_labels.to(shift_logits.device)
|
1270 |
+
loss = loss_fct(shift_logits, shift_labels)
|
1271 |
+
|
1272 |
+
if not return_dict:
|
1273 |
+
output = (logits,) + outputs[1:]
|
1274 |
+
return (loss,) + output if loss is not None else output
|
1275 |
+
|
1276 |
+
return CausalLMOutputWithPast(
|
1277 |
+
loss=loss,
|
1278 |
+
logits=logits,
|
1279 |
+
past_key_values=outputs.past_key_values,
|
1280 |
+
hidden_states=outputs.hidden_states,
|
1281 |
+
attentions=outputs.attentions,
|
1282 |
+
)
|
1283 |
+
|
1284 |
+
# Copied from transformers.models.persimmon.modeling_persimmon.PersimmonForCausalLM.prepare_inputs_for_generation
|
1285 |
+
def prepare_inputs_for_generation(
|
1286 |
+
self, input_ids, past_key_values=None, attention_mask=None, inputs_embeds=None, **kwargs
|
1287 |
+
):
|
1288 |
+
if past_key_values is not None:
|
1289 |
+
if isinstance(past_key_values, Cache):
|
1290 |
+
cache_length = past_key_values.get_seq_length()
|
1291 |
+
past_length = past_key_values.seen_tokens
|
1292 |
+
max_cache_length = past_key_values.get_max_length()
|
1293 |
+
else:
|
1294 |
+
cache_length = past_length = past_key_values[0][0].shape[2]
|
1295 |
+
max_cache_length = None
|
1296 |
+
|
1297 |
+
# Keep only the unprocessed tokens:
|
1298 |
+
# 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
|
1299 |
+
# some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
|
1300 |
+
# input)
|
1301 |
+
if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
|
1302 |
+
input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
|
1303 |
+
# 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
|
1304 |
+
# input_ids based on the past_length.
|
1305 |
+
elif past_length < input_ids.shape[1]:
|
1306 |
+
input_ids = input_ids[:, past_length:]
|
1307 |
+
# 3 - Otherwise (past_length >= input_ids.shape[1]), let's assume input_ids only has unprocessed tokens.
|
1308 |
+
|
1309 |
+
# If we are about to go beyond the maximum cache length, we need to crop the input attention mask.
|
1310 |
+
if (
|
1311 |
+
max_cache_length is not None
|
1312 |
+
and attention_mask is not None
|
1313 |
+
and cache_length + input_ids.shape[1] > max_cache_length
|
1314 |
+
):
|
1315 |
+
attention_mask = attention_mask[:, -max_cache_length:]
|
1316 |
+
|
1317 |
+
position_ids = kwargs.get("position_ids", None)
|
1318 |
+
if attention_mask is not None and position_ids is None:
|
1319 |
+
# create position_ids on the fly for batch generation
|
1320 |
+
position_ids = attention_mask.long().cumsum(-1) - 1
|
1321 |
+
position_ids.masked_fill_(attention_mask == 0, 1)
|
1322 |
+
if past_key_values:
|
1323 |
+
position_ids = position_ids[:, -input_ids.shape[1] :]
|
1324 |
+
|
1325 |
+
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
|
1326 |
+
if inputs_embeds is not None and past_key_values is None:
|
1327 |
+
model_inputs = {"inputs_embeds": inputs_embeds}
|
1328 |
+
else:
|
1329 |
+
model_inputs = {"input_ids": input_ids}
|
1330 |
+
|
1331 |
+
model_inputs.update(
|
1332 |
+
{
|
1333 |
+
"position_ids": position_ids,
|
1334 |
+
"past_key_values": past_key_values,
|
1335 |
+
"use_cache": kwargs.get("use_cache"),
|
1336 |
+
"attention_mask": attention_mask,
|
1337 |
+
}
|
1338 |
+
)
|
1339 |
+
return model_inputs
|
1340 |
+
|
1341 |
+
@staticmethod
|
1342 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM._reorder_cache
|
1343 |
+
def _reorder_cache(past_key_values, beam_idx):
|
1344 |
+
reordered_past = ()
|
1345 |
+
for layer_past in past_key_values:
|
1346 |
+
reordered_past += (
|
1347 |
+
tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
|
1348 |
+
)
|
1349 |
+
return reordered_past
|
1350 |
+
|
1351 |
+
|
1352 |
+
@add_start_docstrings(
|
1353 |
+
"""
|
1354 |
+
The [`Phi3Model`] with a sequence classification head on top (linear layer).
|
1355 |
+
|
1356 |
+
[`Phi3ForSequenceClassification`] uses the last token in order to do the classification, as other causal models
|
1357 |
+
(e.g. GPT-2) do.
|
1358 |
+
|
1359 |
+
Since it does classification on the last token, it requires to know the position of the last token. If a
|
1360 |
+
`pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
|
1361 |
+
no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
|
1362 |
+
padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
|
1363 |
+
each row of the batch).
|
1364 |
+
""",
|
1365 |
+
PHI3_START_DOCSTRING,
|
1366 |
+
)
|
1367 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForSequenceClassification with Llama->Phi3, LLAMA->PHI3, self.transformer->self.model, transformer_outputs->model_outputs
|
1368 |
+
class Phi3ForSequenceClassification(Phi3PreTrainedModel):
|
1369 |
+
def __init__(self, config):
|
1370 |
+
super().__init__(config)
|
1371 |
+
self.num_labels = config.num_labels
|
1372 |
+
self.model = Phi3Model(config)
|
1373 |
+
self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
|
1374 |
+
|
1375 |
+
# Initialize weights and apply final processing
|
1376 |
+
self.post_init()
|
1377 |
+
|
1378 |
+
def get_input_embeddings(self):
|
1379 |
+
return self.model.embed_tokens
|
1380 |
+
|
1381 |
+
def set_input_embeddings(self, value):
|
1382 |
+
self.model.embed_tokens = value
|
1383 |
+
|
1384 |
+
@add_start_docstrings_to_model_forward(PHI3_INPUTS_DOCSTRING)
|
1385 |
+
def forward(
|
1386 |
+
self,
|
1387 |
+
input_ids: torch.LongTensor = None,
|
1388 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1389 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1390 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1391 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1392 |
+
labels: Optional[torch.LongTensor] = None,
|
1393 |
+
use_cache: Optional[bool] = None,
|
1394 |
+
output_attentions: Optional[bool] = None,
|
1395 |
+
output_hidden_states: Optional[bool] = None,
|
1396 |
+
return_dict: Optional[bool] = None,
|
1397 |
+
) -> Union[Tuple, SequenceClassifierOutputWithPast]:
|
1398 |
+
r"""
|
1399 |
+
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
|
1400 |
+
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
|
1401 |
+
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
|
1402 |
+
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
|
1403 |
+
"""
|
1404 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1405 |
+
|
1406 |
+
model_outputs = self.model(
|
1407 |
+
input_ids,
|
1408 |
+
attention_mask=attention_mask,
|
1409 |
+
position_ids=position_ids,
|
1410 |
+
past_key_values=past_key_values,
|
1411 |
+
inputs_embeds=inputs_embeds,
|
1412 |
+
use_cache=use_cache,
|
1413 |
+
output_attentions=output_attentions,
|
1414 |
+
output_hidden_states=output_hidden_states,
|
1415 |
+
return_dict=return_dict,
|
1416 |
+
)
|
1417 |
+
hidden_states = model_outputs[0]
|
1418 |
+
logits = self.score(hidden_states)
|
1419 |
+
|
1420 |
+
if input_ids is not None:
|
1421 |
+
batch_size = input_ids.shape[0]
|
1422 |
+
else:
|
1423 |
+
batch_size = inputs_embeds.shape[0]
|
1424 |
+
|
1425 |
+
if self.config.pad_token_id is None and batch_size != 1:
|
1426 |
+
raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
|
1427 |
+
if self.config.pad_token_id is None:
|
1428 |
+
sequence_lengths = -1
|
1429 |
+
else:
|
1430 |
+
if input_ids is not None:
|
1431 |
+
# if no pad token found, use modulo instead of reverse indexing for ONNX compatibility
|
1432 |
+
sequence_lengths = torch.eq(input_ids, self.config.pad_token_id).int().argmax(-1) - 1
|
1433 |
+
sequence_lengths = sequence_lengths % input_ids.shape[-1]
|
1434 |
+
sequence_lengths = sequence_lengths.to(logits.device)
|
1435 |
+
else:
|
1436 |
+
sequence_lengths = -1
|
1437 |
+
|
1438 |
+
pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
|
1439 |
+
|
1440 |
+
loss = None
|
1441 |
+
if labels is not None:
|
1442 |
+
labels = labels.to(logits.device)
|
1443 |
+
if self.config.problem_type is None:
|
1444 |
+
if self.num_labels == 1:
|
1445 |
+
self.config.problem_type = "regression"
|
1446 |
+
elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
|
1447 |
+
self.config.problem_type = "single_label_classification"
|
1448 |
+
else:
|
1449 |
+
self.config.problem_type = "multi_label_classification"
|
1450 |
+
|
1451 |
+
if self.config.problem_type == "regression":
|
1452 |
+
loss_fct = MSELoss()
|
1453 |
+
if self.num_labels == 1:
|
1454 |
+
loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
|
1455 |
+
else:
|
1456 |
+
loss = loss_fct(pooled_logits, labels)
|
1457 |
+
elif self.config.problem_type == "single_label_classification":
|
1458 |
+
loss_fct = CrossEntropyLoss()
|
1459 |
+
loss = loss_fct(pooled_logits.view(-1, self.num_labels), labels.view(-1))
|
1460 |
+
elif self.config.problem_type == "multi_label_classification":
|
1461 |
+
loss_fct = BCEWithLogitsLoss()
|
1462 |
+
loss = loss_fct(pooled_logits, labels)
|
1463 |
+
if not return_dict:
|
1464 |
+
output = (pooled_logits,) + model_outputs[1:]
|
1465 |
+
return ((loss,) + output) if loss is not None else output
|
1466 |
+
|
1467 |
+
return SequenceClassifierOutputWithPast(
|
1468 |
+
loss=loss,
|
1469 |
+
logits=pooled_logits,
|
1470 |
+
past_key_values=model_outputs.past_key_values,
|
1471 |
+
hidden_states=model_outputs.hidden_states,
|
1472 |
+
attentions=model_outputs.attentions,
|
1473 |
+
)
|
1474 |
+
|
1475 |
+
|
1476 |
+
@add_start_docstrings(
|
1477 |
+
"""
|
1478 |
+
[`Phi3Model`] with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for
|
1479 |
+
Named-Entity-Recognition (NER) tasks.
|
1480 |
+
""",
|
1481 |
+
PHI3_START_DOCSTRING,
|
1482 |
+
)
|
1483 |
+
# Copied from transformers.models.mpt.modeling_mpt.MptForTokenClassification with Mpt->Phi3,MPT->PHI3,self.transformer->self.model,transformer_outputs->model_outputs
|
1484 |
+
class Phi3ForTokenClassification(Phi3PreTrainedModel):
|
1485 |
+
def __init__(self, config: Phi3Config):
|
1486 |
+
super().__init__(config)
|
1487 |
+
self.num_labels = config.num_labels
|
1488 |
+
|
1489 |
+
self.model = Phi3Model(config)
|
1490 |
+
if hasattr(config, "classifier_dropout") and config.classifier_dropout is not None:
|
1491 |
+
classifier_dropout = config.classifier_dropout
|
1492 |
+
elif hasattr(config, "hidden_dropout") and config.hidden_dropout is not None:
|
1493 |
+
classifier_dropout = config.hidden_dropout
|
1494 |
+
else:
|
1495 |
+
classifier_dropout = 0.1
|
1496 |
+
self.dropout = nn.Dropout(classifier_dropout)
|
1497 |
+
self.classifier = nn.Linear(config.hidden_size, config.num_labels)
|
1498 |
+
|
1499 |
+
# Initialize weights and apply final processing
|
1500 |
+
self.post_init()
|
1501 |
+
|
1502 |
+
@add_start_docstrings_to_model_forward(PHI3_INPUTS_DOCSTRING)
|
1503 |
+
@add_code_sample_docstrings(
|
1504 |
+
checkpoint=_CHECKPOINT_FOR_DOC,
|
1505 |
+
output_type=TokenClassifierOutput,
|
1506 |
+
config_class=_CONFIG_FOR_DOC,
|
1507 |
+
)
|
1508 |
+
def forward(
|
1509 |
+
self,
|
1510 |
+
input_ids: Optional[torch.LongTensor] = None,
|
1511 |
+
past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
|
1512 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1513 |
+
inputs_embeds: Optional[torch.Tensor] = None,
|
1514 |
+
labels: Optional[torch.Tensor] = None,
|
1515 |
+
use_cache: Optional[bool] = None,
|
1516 |
+
output_attentions: Optional[bool] = None,
|
1517 |
+
output_hidden_states: Optional[bool] = None,
|
1518 |
+
return_dict: Optional[bool] = None,
|
1519 |
+
**deprecated_arguments,
|
1520 |
+
) -> Union[Tuple[torch.Tensor], TokenClassifierOutput]:
|
1521 |
+
r"""
|
1522 |
+
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
|
1523 |
+
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
|
1524 |
+
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
|
1525 |
+
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
|
1526 |
+
"""
|
1527 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1528 |
+
|
1529 |
+
model_outputs = self.model(
|
1530 |
+
input_ids,
|
1531 |
+
past_key_values=past_key_values,
|
1532 |
+
attention_mask=attention_mask,
|
1533 |
+
inputs_embeds=inputs_embeds,
|
1534 |
+
use_cache=use_cache,
|
1535 |
+
output_attentions=output_attentions,
|
1536 |
+
output_hidden_states=output_hidden_states,
|
1537 |
+
return_dict=return_dict,
|
1538 |
+
)
|
1539 |
+
|
1540 |
+
hidden_states = model_outputs[0]
|
1541 |
+
hidden_states = self.dropout(hidden_states)
|
1542 |
+
logits = self.classifier(hidden_states)
|
1543 |
+
|
1544 |
+
loss = None
|
1545 |
+
if labels is not None:
|
1546 |
+
# move labels to correct device to enable model parallelism
|
1547 |
+
labels = labels.to(logits.device)
|
1548 |
+
batch_size, seq_length = labels.shape
|
1549 |
+
loss_fct = CrossEntropyLoss()
|
1550 |
+
loss = loss_fct(
|
1551 |
+
logits.view(batch_size * seq_length, self.num_labels), labels.view(batch_size * seq_length)
|
1552 |
+
)
|
1553 |
+
|
1554 |
+
if not return_dict:
|
1555 |
+
output = (logits,) + model_outputs[2:]
|
1556 |
+
return ((loss,) + output) if loss is not None else output
|
1557 |
+
|
1558 |
+
return TokenClassifierOutput(
|
1559 |
+
loss=loss,
|
1560 |
+
logits=logits,
|
1561 |
+
hidden_states=model_outputs.hidden_states,
|
1562 |
+
attentions=model_outputs.attentions,
|
1563 |
+
)
|
sample_finetune.py
ADDED
@@ -0,0 +1,214 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
import sys
|
2 |
+
import logging
|
3 |
+
|
4 |
+
import datasets
|
5 |
+
from datasets import load_dataset
|
6 |
+
from peft import LoraConfig
|
7 |
+
import torch
|
8 |
+
import transformers
|
9 |
+
from trl import SFTTrainer
|
10 |
+
from transformers import AutoModelForCausalLM, AutoTokenizer, TrainingArguments, BitsAndBytesConfig
|
11 |
+
|
12 |
+
"""
|
13 |
+
A simple example on using SFTTrainer and Accelerate to finetune Phi-3 models. For
|
14 |
+
a more advanced example, please follow HF alignment-handbook/scripts/run_sft.py.
|
15 |
+
This example has utilized DeepSpeed ZeRO3 offload to reduce the memory usage. The
|
16 |
+
script can be run on V100 or later generation GPUs. Here are some suggestions on
|
17 |
+
futher reducing memory consumption:
|
18 |
+
- reduce batch size
|
19 |
+
- decrease lora dimension
|
20 |
+
- restrict lora target modules
|
21 |
+
Please follow these steps to run the script:
|
22 |
+
1. Install dependencies:
|
23 |
+
conda install -c conda-forge accelerate
|
24 |
+
pip3 install -i https://pypi.org/simple/ bitsandbytes
|
25 |
+
pip3 install peft transformers trl datasets
|
26 |
+
pip3 install deepspeed
|
27 |
+
2. Setup accelerate and deepspeed config based on the machine used:
|
28 |
+
accelerate config
|
29 |
+
Here is a sample config for deepspeed zero3:
|
30 |
+
compute_environment: LOCAL_MACHINE
|
31 |
+
debug: false
|
32 |
+
deepspeed_config:
|
33 |
+
gradient_accumulation_steps: 1
|
34 |
+
offload_optimizer_device: none
|
35 |
+
offload_param_device: none
|
36 |
+
zero3_init_flag: true
|
37 |
+
zero3_save_16bit_model: true
|
38 |
+
zero_stage: 3
|
39 |
+
distributed_type: DEEPSPEED
|
40 |
+
downcast_bf16: 'no'
|
41 |
+
enable_cpu_affinity: false
|
42 |
+
machine_rank: 0
|
43 |
+
main_training_function: main
|
44 |
+
mixed_precision: bf16
|
45 |
+
num_machines: 1
|
46 |
+
num_processes: 4
|
47 |
+
rdzv_backend: static
|
48 |
+
same_network: true
|
49 |
+
tpu_env: []
|
50 |
+
tpu_use_cluster: false
|
51 |
+
tpu_use_sudo: false
|
52 |
+
use_cpu: false
|
53 |
+
3. check accelerate config:
|
54 |
+
accelerate env
|
55 |
+
4. Run the code:
|
56 |
+
accelerate launch sample_finetune.py
|
57 |
+
"""
|
58 |
+
|
59 |
+
logger = logging.getLogger(__name__)
|
60 |
+
|
61 |
+
|
62 |
+
###################
|
63 |
+
# Hyper-parameters
|
64 |
+
###################
|
65 |
+
training_config = {
|
66 |
+
"bf16": True,
|
67 |
+
"do_eval": False,
|
68 |
+
"learning_rate": 5.0e-06,
|
69 |
+
"log_level": "info",
|
70 |
+
"logging_steps": 20,
|
71 |
+
"logging_strategy": "steps",
|
72 |
+
"lr_scheduler_type": "cosine",
|
73 |
+
"num_train_epochs": 1,
|
74 |
+
"max_steps": -1,
|
75 |
+
"output_dir": "./checkpoint_dir",
|
76 |
+
"overwrite_output_dir": True,
|
77 |
+
"per_device_eval_batch_size": 4,
|
78 |
+
"per_device_train_batch_size": 4,
|
79 |
+
"remove_unused_columns": True,
|
80 |
+
"save_steps": 100,
|
81 |
+
"save_total_limit": 1,
|
82 |
+
"seed": 0,
|
83 |
+
"gradient_checkpointing": True,
|
84 |
+
"gradient_checkpointing_kwargs":{"use_reentrant": False},
|
85 |
+
"gradient_accumulation_steps": 1,
|
86 |
+
"warmup_ratio": 0.2,
|
87 |
+
}
|
88 |
+
|
89 |
+
peft_config = {
|
90 |
+
"r": 16,
|
91 |
+
"lora_alpha": 32,
|
92 |
+
"lora_dropout": 0.05,
|
93 |
+
"bias": "none",
|
94 |
+
"task_type": "CAUSAL_LM",
|
95 |
+
"target_modules": "all-linear",
|
96 |
+
"modules_to_save": None,
|
97 |
+
}
|
98 |
+
train_conf = TrainingArguments(**training_config)
|
99 |
+
peft_conf = LoraConfig(**peft_config)
|
100 |
+
|
101 |
+
|
102 |
+
###############
|
103 |
+
# Setup logging
|
104 |
+
###############
|
105 |
+
logging.basicConfig(
|
106 |
+
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
|
107 |
+
datefmt="%Y-%m-%d %H:%M:%S",
|
108 |
+
handlers=[logging.StreamHandler(sys.stdout)],
|
109 |
+
)
|
110 |
+
log_level = train_conf.get_process_log_level()
|
111 |
+
logger.setLevel(log_level)
|
112 |
+
datasets.utils.logging.set_verbosity(log_level)
|
113 |
+
transformers.utils.logging.set_verbosity(log_level)
|
114 |
+
transformers.utils.logging.enable_default_handler()
|
115 |
+
transformers.utils.logging.enable_explicit_format()
|
116 |
+
|
117 |
+
# Log on each process a small summary
|
118 |
+
logger.warning(
|
119 |
+
f"Process rank: {train_conf.local_rank}, device: {train_conf.device}, n_gpu: {train_conf.n_gpu}"
|
120 |
+
+ f" distributed training: {bool(train_conf.local_rank != -1)}, 16-bits training: {train_conf.fp16}"
|
121 |
+
)
|
122 |
+
logger.info(f"Training/evaluation parameters {train_conf}")
|
123 |
+
logger.info(f"PEFT parameters {peft_conf}")
|
124 |
+
|
125 |
+
|
126 |
+
################
|
127 |
+
# Model Loading
|
128 |
+
################
|
129 |
+
checkpoint_path = "microsoft/Phi-3-mini-4k-instruct"
|
130 |
+
# checkpoint_path = "microsoft/Phi-3-mini-128k-instruct"
|
131 |
+
model_kwargs = dict(
|
132 |
+
use_cache=False,
|
133 |
+
trust_remote_code=True,
|
134 |
+
attn_implementation="flash_attention_2", # loading the model with flash-attenstion support
|
135 |
+
torch_dtype=torch.bfloat16,
|
136 |
+
device_map=None
|
137 |
+
)
|
138 |
+
model = AutoModelForCausalLM.from_pretrained(checkpoint_path, **model_kwargs)
|
139 |
+
tokenizer = AutoTokenizer.from_pretrained(checkpoint_path)
|
140 |
+
tokenizer.model_max_length = 2048
|
141 |
+
tokenizer.pad_token = tokenizer.unk_token # use unk rather than eos token to prevent endless generation
|
142 |
+
tokenizer.pad_token_id = tokenizer.convert_tokens_to_ids(tokenizer.pad_token)
|
143 |
+
tokenizer.padding_side = 'right'
|
144 |
+
|
145 |
+
|
146 |
+
##################
|
147 |
+
# Data Processing
|
148 |
+
##################
|
149 |
+
def apply_chat_template(
|
150 |
+
example,
|
151 |
+
tokenizer,
|
152 |
+
):
|
153 |
+
messages = example["messages"]
|
154 |
+
example["text"] = tokenizer.apply_chat_template(
|
155 |
+
messages, tokenize=False, add_generation_prompt=False)
|
156 |
+
return example
|
157 |
+
|
158 |
+
raw_dataset = load_dataset("HuggingFaceH4/ultrachat_200k")
|
159 |
+
train_dataset = raw_dataset["train_sft"]
|
160 |
+
test_dataset = raw_dataset["test_sft"]
|
161 |
+
column_names = list(train_dataset.features)
|
162 |
+
|
163 |
+
processed_train_dataset = train_dataset.map(
|
164 |
+
apply_chat_template,
|
165 |
+
fn_kwargs={"tokenizer": tokenizer},
|
166 |
+
num_proc=10,
|
167 |
+
remove_columns=column_names,
|
168 |
+
desc="Applying chat template to train_sft",
|
169 |
+
)
|
170 |
+
|
171 |
+
processed_test_dataset = test_dataset.map(
|
172 |
+
apply_chat_template,
|
173 |
+
fn_kwargs={"tokenizer": tokenizer},
|
174 |
+
num_proc=10,
|
175 |
+
remove_columns=column_names,
|
176 |
+
desc="Applying chat template to test_sft",
|
177 |
+
)
|
178 |
+
|
179 |
+
|
180 |
+
###########
|
181 |
+
# Training
|
182 |
+
###########
|
183 |
+
trainer = SFTTrainer(
|
184 |
+
model=model,
|
185 |
+
args=train_conf,
|
186 |
+
peft_config=peft_conf,
|
187 |
+
train_dataset=processed_train_dataset,
|
188 |
+
eval_dataset=processed_test_dataset,
|
189 |
+
max_seq_length=2048,
|
190 |
+
dataset_text_field="text",
|
191 |
+
tokenizer=tokenizer,
|
192 |
+
packing=True
|
193 |
+
)
|
194 |
+
train_result = trainer.train()
|
195 |
+
metrics = train_result.metrics
|
196 |
+
trainer.log_metrics("train", metrics)
|
197 |
+
trainer.save_metrics("train", metrics)
|
198 |
+
trainer.save_state()
|
199 |
+
|
200 |
+
|
201 |
+
#############
|
202 |
+
# Evaluation
|
203 |
+
#############
|
204 |
+
tokenizer.padding_side = 'left'
|
205 |
+
metrics = trainer.evaluate()
|
206 |
+
metrics["eval_samples"] = len(processed_test_dataset)
|
207 |
+
trainer.log_metrics("eval", metrics)
|
208 |
+
trainer.save_metrics("eval", metrics)
|
209 |
+
|
210 |
+
|
211 |
+
# ############
|
212 |
+
# # Save model
|
213 |
+
# ############
|
214 |
+
trainer.save_model(train_conf.output_dir)
|
special_tokens_map.json
ADDED
@@ -0,0 +1,30 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
{
|
2 |
+
"bos_token": {
|
3 |
+
"content": "<s>",
|
4 |
+
"lstrip": false,
|
5 |
+
"normalized": false,
|
6 |
+
"rstrip": false,
|
7 |
+
"single_word": false
|
8 |
+
},
|
9 |
+
"eos_token": {
|
10 |
+
"content": "<|endoftext|>",
|
11 |
+
"lstrip": false,
|
12 |
+
"normalized": false,
|
13 |
+
"rstrip": false,
|
14 |
+
"single_word": false
|
15 |
+
},
|
16 |
+
"pad_token": {
|
17 |
+
"content": "<|endoftext|>",
|
18 |
+
"lstrip": false,
|
19 |
+
"normalized": false,
|
20 |
+
"rstrip": false,
|
21 |
+
"single_word": false
|
22 |
+
},
|
23 |
+
"unk_token": {
|
24 |
+
"content": "<unk>",
|
25 |
+
"lstrip": false,
|
26 |
+
"normalized": false,
|
27 |
+
"rstrip": false,
|
28 |
+
"single_word": false
|
29 |
+
}
|
30 |
+
}
|
tokenizer.json
ADDED
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tokenizer.model
ADDED
@@ -0,0 +1,3 @@
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|
1 |
+
version https://git-lfs.github.com/spec/v1
|
2 |
+
oid sha256:9e556afd44213b6bd1be2b850ebbbd98f5481437a8021afaf58ee7fb1818d347
|
3 |
+
size 499723
|
tokenizer_config.json
ADDED
@@ -0,0 +1,131 @@
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|
|
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|
|
|
|
|
1 |
+
{
|
2 |
+
"add_bos_token": false,
|
3 |
+
"add_eos_token": false,
|
4 |
+
"add_prefix_space": null,
|
5 |
+
"added_tokens_decoder": {
|
6 |
+
"0": {
|
7 |
+
"content": "<unk>",
|
8 |
+
"lstrip": false,
|
9 |
+
"normalized": false,
|
10 |
+
"rstrip": false,
|
11 |
+
"single_word": false,
|
12 |
+
"special": true
|
13 |
+
},
|
14 |
+
"1": {
|
15 |
+
"content": "<s>",
|
16 |
+
"lstrip": false,
|
17 |
+
"normalized": false,
|
18 |
+
"rstrip": false,
|
19 |
+
"single_word": false,
|
20 |
+
"special": true
|
21 |
+
},
|
22 |
+
"2": {
|
23 |
+
"content": "</s>",
|
24 |
+
"lstrip": false,
|
25 |
+
"normalized": false,
|
26 |
+
"rstrip": true,
|
27 |
+
"single_word": false,
|
28 |
+
"special": false
|
29 |
+
},
|
30 |
+
"32000": {
|
31 |
+
"content": "<|endoftext|>",
|
32 |
+
"lstrip": false,
|
33 |
+
"normalized": false,
|
34 |
+
"rstrip": false,
|
35 |
+
"single_word": false,
|
36 |
+
"special": true
|
37 |
+
},
|
38 |
+
"32001": {
|
39 |
+
"content": "<|assistant|>",
|
40 |
+
"lstrip": false,
|
41 |
+
"normalized": false,
|
42 |
+
"rstrip": true,
|
43 |
+
"single_word": false,
|
44 |
+
"special": true
|
45 |
+
},
|
46 |
+
"32002": {
|
47 |
+
"content": "<|placeholder1|>",
|
48 |
+
"lstrip": false,
|
49 |
+
"normalized": false,
|
50 |
+
"rstrip": true,
|
51 |
+
"single_word": false,
|
52 |
+
"special": true
|
53 |
+
},
|
54 |
+
"32003": {
|
55 |
+
"content": "<|placeholder2|>",
|
56 |
+
"lstrip": false,
|
57 |
+
"normalized": false,
|
58 |
+
"rstrip": true,
|
59 |
+
"single_word": false,
|
60 |
+
"special": true
|
61 |
+
},
|
62 |
+
"32004": {
|
63 |
+
"content": "<|placeholder3|>",
|
64 |
+
"lstrip": false,
|
65 |
+
"normalized": false,
|
66 |
+
"rstrip": true,
|
67 |
+
"single_word": false,
|
68 |
+
"special": true
|
69 |
+
},
|
70 |
+
"32005": {
|
71 |
+
"content": "<|placeholder4|>",
|
72 |
+
"lstrip": false,
|
73 |
+
"normalized": false,
|
74 |
+
"rstrip": true,
|
75 |
+
"single_word": false,
|
76 |
+
"special": true
|
77 |
+
},
|
78 |
+
"32006": {
|
79 |
+
"content": "<|system|>",
|
80 |
+
"lstrip": false,
|
81 |
+
"normalized": false,
|
82 |
+
"rstrip": true,
|
83 |
+
"single_word": false,
|
84 |
+
"special": true
|
85 |
+
},
|
86 |
+
"32007": {
|
87 |
+
"content": "<|end|>",
|
88 |
+
"lstrip": false,
|
89 |
+
"normalized": false,
|
90 |
+
"rstrip": true,
|
91 |
+
"single_word": false,
|
92 |
+
"special": true
|
93 |
+
},
|
94 |
+
"32008": {
|
95 |
+
"content": "<|placeholder5|>",
|
96 |
+
"lstrip": false,
|
97 |
+
"normalized": false,
|
98 |
+
"rstrip": true,
|
99 |
+
"single_word": false,
|
100 |
+
"special": true
|
101 |
+
},
|
102 |
+
"32009": {
|
103 |
+
"content": "<|placeholder6|>",
|
104 |
+
"lstrip": false,
|
105 |
+
"normalized": false,
|
106 |
+
"rstrip": true,
|
107 |
+
"single_word": false,
|
108 |
+
"special": true
|
109 |
+
},
|
110 |
+
"32010": {
|
111 |
+
"content": "<|user|>",
|
112 |
+
"lstrip": false,
|
113 |
+
"normalized": false,
|
114 |
+
"rstrip": true,
|
115 |
+
"single_word": false,
|
116 |
+
"special": true
|
117 |
+
}
|
118 |
+
},
|
119 |
+
"bos_token": "<s>",
|
120 |
+
"chat_template": "{% for message in messages %}{% if message['role'] == 'system' %}{{'<|system|>\n' + message['content'] + '<|end|>\n'}}{% elif message['role'] == 'user' %}{{'<|user|>\n' + message['content'] + '<|end|>\n'}}{% elif message['role'] == 'assistant' %}{{'<|assistant|>\n' + message['content'] + '<|end|>\n'}}{% endif %}{% endfor %}{% if add_generation_prompt %}{{ '<|assistant|>\n' }}{% else %}{{ eos_token }}{% endif %}",
|
121 |
+
"clean_up_tokenization_spaces": false,
|
122 |
+
"eos_token": "<|endoftext|>",
|
123 |
+
"legacy": false,
|
124 |
+
"model_max_length": 4096,
|
125 |
+
"pad_token": "<|endoftext|>",
|
126 |
+
"padding_side": "left",
|
127 |
+
"sp_model_kwargs": {},
|
128 |
+
"tokenizer_class": "LlamaTokenizer",
|
129 |
+
"unk_token": "<unk>",
|
130 |
+
"use_default_system_prompt": false
|
131 |
+
}
|