MLX
Safetensors
7 languages
stablelm
causal-lm
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README.md ADDED
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+ ---
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+ language:
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+ - en
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+ - de
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+ - es
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+ - fr
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+ - it
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+ - nl
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+ - pt
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+ license: other
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+ tags:
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+ - causal-lm
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+ - mlx
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+ datasets:
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+ - tiiuae/falcon-refinedweb
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+ - togethercomputer/RedPajama-Data-1T
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+ - uonlp/CulturaX
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+ - CarperAI/pilev2-dev
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+ - bigcode/starcoderdata
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+ - DataProvenanceInitiative/Commercially-Verified-Licenses
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+ ---
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+
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+ # mlx-community/stablelm-2-1_6b-4bit
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+ This model was converted to MLX format from [`stabilityai/stablelm-2-1_6b`]() using mlx-lm version **0.7.0**.
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+ Refer to the [original model card](https://huggingface.co/stabilityai/stablelm-2-1_6b) for more details on the model.
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+ ## Use with mlx
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+
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+ ```bash
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+ pip install mlx-lm
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+ ```
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+
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+ ```python
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+ from mlx_lm import load, generate
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+
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+ model, tokenizer = load("mlx-community/stablelm-2-1_6b-4bit")
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+ response = generate(model, tokenizer, prompt="hello", verbose=True)
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+ ```
config.json ADDED
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+ {
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+ "add_cross_attention": false,
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+ "architectures": [
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+ "StableLmForCausalLM"
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+ ],
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+ "attention_dropout": 0.0,
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+ "bad_words_ids": null,
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+ "begin_suppress_tokens": null,
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+ "bos_token_id": 100257,
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+ "chunk_size_feed_forward": 0,
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+ "cross_attention_hidden_size": null,
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+ "decoder_start_token_id": null,
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+ "diversity_penalty": 0.0,
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+ "do_sample": false,
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+ "early_stopping": false,
16
+ "encoder_no_repeat_ngram_size": 0,
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+ "eos_token_id": 100257,
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+ "exponential_decay_length_penalty": null,
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+ "finetuning_task": null,
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+ "forced_bos_token_id": null,
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+ "forced_eos_token_id": null,
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+ "hidden_act": "silu",
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+ "hidden_dropout": 0.0,
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+ "hidden_size": 2048,
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+ "id2label": {
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+ "0": "LABEL_0",
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+ "1": "LABEL_1"
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+ },
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+ "initializer_range": 0.02,
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+ "intermediate_size": 5632,
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+ "is_decoder": false,
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+ "is_encoder_decoder": false,
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+ "label2id": {
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+ "LABEL_0": 0,
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+ "LABEL_1": 1
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+ },
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+ "layer_norm_eps": 1e-05,
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+ "length_penalty": 1.0,
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+ "max_length": 20,
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+ "max_position_embeddings": 4096,
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+ "min_length": 0,
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+ "model_type": "stablelm",
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+ "no_repeat_ngram_size": 0,
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+ "num_attention_heads": 32,
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+ "num_beam_groups": 1,
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+ "num_beams": 1,
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+ "num_hidden_layers": 24,
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+ "num_key_value_heads": 32,
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+ "num_return_sequences": 1,
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+ "output_attentions": false,
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+ "output_hidden_states": false,
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+ "output_scores": false,
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+ "pad_token_id": null,
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+ "partial_rotary_factor": 0.25,
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+ "prefix": null,
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+ "problem_type": null,
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+ "pruned_heads": {},
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+ "quantization": {
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+ "group_size": 64,
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+ "bits": 4
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+ },
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+ "remove_invalid_values": false,
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+ "repetition_penalty": 1.0,
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+ "return_dict": true,
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+ "return_dict_in_generate": false,
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+ "rope_scaling": null,
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+ "rope_theta": 10000,
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+ "sep_token_id": null,
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+ "suppress_tokens": null,
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+ "task_specific_params": null,
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+ "temperature": 1.0,
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+ "tf_legacy_loss": false,
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+ "tie_encoder_decoder": false,
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+ "tie_word_embeddings": false,
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+ "tokenizer_class": null,
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+ "top_k": 50,
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+ "top_p": 1.0,
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+ "torch_dtype": "float16",
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+ "torchscript": false,
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+ "transformers_version": "4.40.0.dev0",
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+ "typical_p": 1.0,
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+ "use_bfloat16": false,
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+ "use_cache": true,
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+ "use_qkv_bias": true,
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+ "vocab_size": 100352
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+ }
configuration_stablelm.py ADDED
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+ # coding=utf-8
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+ # Copyright 2024 Stability AI and The HuggingFace Inc. team. All rights reserved.
3
+ #
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+ # 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
+ """ StableLM model configuration """
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+
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+ from transformers.configuration_utils import PretrainedConfig
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+ from transformers.utils import logging
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+
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+
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+ logger = logging.get_logger(__name__)
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+
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+ STABLELM_PRETRAINED_CONFIG_ARCHIVE_MAP = {
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+ "stabilityai/stablelm-3b-4e1t": "https://huggingface.co/stabilityai/stablelm-3b-4e1t/resolve/main/config.json",
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+ # See all StableLM models at https://huggingface.co/models?filter=stablelm
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+ }
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+
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+
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+ class StableLmConfig(PretrainedConfig):
30
+ r"""
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+ This is the configuration class to store the configuration of a [`~StableLmModel`].
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+ It is used to instantiate an StableLM model according to the specified arguments, defining the model
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+ architecture. Instantiating a configuration with the defaults will yield a similar configuration to that of
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+ the StableLM [stabilityai/stablelm-3b-4e1t](https://huggingface.co/stabilityai/stablelm-3b-4e1t) architecture.
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+
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+ Configuration objects inherit from [`PretrainedConfig`] and can be used
37
+ to control the model outputs. Read the documentation from [`PretrainedConfig`]
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+ for more information.
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+
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+
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+ Args:
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+ vocab_size (`int`, *optional*, defaults to 50304):
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+ Vocabulary size of the StableLM model. Defines the number of different tokens that
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+ can be represented by the `inputs_ids` passed when calling [`StableLmModel`].
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+ intermediate_size (`int`, *optional*, defaults to 6912):
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+ Dimension of the MLP representations.
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+ hidden_size (`int`, *optional*, defaults to 2560):
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+ Number of hidden layers in the Transformer decoder.
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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 encoder.
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+ num_key_value_heads (`int`, *optional*, defaults to 32):
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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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+ hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
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+ The non-linear activation function (function or string).
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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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+ Typically set this to something large just in case (e.g., 512 or 1024 or 2048).
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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
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+ all weight matrices.
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+ layer_norm_eps (`float`, *optional*, defaults to 1e-05):
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+ The epsilon used by the normalization layers.
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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
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+ (not used by all models). Only relevant if `config.is_decoder=True`.
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+ tie_word_embeddings (`bool`, *optional*, defaults to `False`):
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+ Whether the model's input and output word embeddings should be tied.
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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*):
79
+ Dictionary containing the scaling configuration for the RoPE embeddings. Currently supports two scaling
80
+ strategies: linear and dynamic. Their scaling factor must be a float greater than 1. The expected format is
81
+ `{"type": strategy name, "factor": scaling factor}`. When using this flag, don't update
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+ `max_position_embeddings` to the expected new maximum. See the following thread for more information on how
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+ these scaling strategies behave:
84
+ https://www.reddit.com/r/LocalLLaMA/comments/14mrgpr/dynamically_scaled_rope_further_increases/. This
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+ is an experimental feature, subject to breaking API changes in future versions.
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+ use_qkv_bias (`bool`, *optional*, defaults to `False`):
87
+ Whether or not the model should use bias for qkv layers.
88
+ hidden_dropout (`float`, *optional*, defaults to 0.0):
89
+ The dropout ratio after applying the MLP to the hidden states.
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+ attention_dropout (`float`, *optional*, defaults to 0.0):
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+ The dropout ratio for the attention probabilities.
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+ partial_rotary_factor (`float`, *optional*, defaults to 0.25):
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+ Percentage of the query and keys which will have rotary embedding.
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+ bos_token_id (int, *optional*, defaults to 0):
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+ The id of the `BOS` token in the vocabulary.
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+ eos_token_id (int, *optional*, defaults to 0):
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+ The id of the `EOS` token in the vocabulary.
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+
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+ Example:
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+
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+ ```python
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+ >>> from transformers import StableLmModel, StableLmConfig
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+
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+ >>> # Initializing a StableLM stablelm-3b style configuration
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+ >>> configuration = StableLmConfig()
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+ ```"""
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+
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+ model_type = "stablelm"
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+ keys_to_ignore_at_inference = ["past_key_values"]
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+
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+ def __init__(
112
+ self,
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+ vocab_size=50304,
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+ intermediate_size=6912,
115
+ hidden_size=2560,
116
+ num_hidden_layers=32,
117
+ num_attention_heads=32,
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+ num_key_value_heads=32,
119
+ hidden_act="silu",
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+ max_position_embeddings=4096,
121
+ initializer_range=0.02,
122
+ layer_norm_eps=1.0e-5,
123
+ use_cache=True,
124
+ tie_word_embeddings=False,
125
+ rope_theta=10_000,
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+ rope_scaling=None,
127
+ use_qkv_bias=False,
128
+ hidden_dropout=0.0,
129
+ attention_dropout=0.0,
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+ partial_rotary_factor=0.25,
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+ bos_token_id=0,
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+ eos_token_id=0,
133
+ **kwargs,
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+ ):
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+ self.vocab_size = vocab_size
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+ self.max_position_embeddings = max_position_embeddings
137
+
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+ self.hidden_size = hidden_size
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+ self.intermediate_size = intermediate_size
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+ self.num_hidden_layers = num_hidden_layers
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+ self.num_attention_heads = num_attention_heads
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+ self.num_key_value_heads = num_key_value_heads
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+ self.hidden_act = hidden_act
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+
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+ self.initializer_range = initializer_range
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+ self.layer_norm_eps = layer_norm_eps
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+ self.use_cache = use_cache
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+ self.rope_theta = rope_theta
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+ self.rope_scaling = rope_scaling
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+ self.use_qkv_bias = use_qkv_bias
151
+ self.hidden_dropout = hidden_dropout
152
+ self.attention_dropout = attention_dropout
153
+ self.partial_rotary_factor = partial_rotary_factor
154
+ self._rope_scaling_validation()
155
+
156
+ super().__init__(
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+ bos_token_id=bos_token_id,
158
+ eos_token_id=eos_token_id,
159
+ tie_word_embeddings=tie_word_embeddings,
160
+ **kwargs,
161
+ )
162
+
163
+ # Copied from transformers.models.llama.configuration_llama.LlamaConfig._rope_scaling_validation
164
+ def _rope_scaling_validation(self):
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+ """
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+ Validate the `rope_scaling` configuration.
167
+ """
168
+ if self.rope_scaling is None:
169
+ return
170
+
171
+ if not isinstance(self.rope_scaling, dict) or len(self.rope_scaling) != 2:
172
+ raise ValueError(
173
+ "`rope_scaling` must be a dictionary with with two fields, `type` and `factor`, "
174
+ f"got {self.rope_scaling}"
175
+ )
176
+ rope_scaling_type = self.rope_scaling.get("type", None)
177
+ rope_scaling_factor = self.rope_scaling.get("factor", None)
178
+ if rope_scaling_type is None or rope_scaling_type not in ["linear", "dynamic"]:
179
+ raise ValueError(
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+ f"`rope_scaling`'s type field must be one of ['linear', 'dynamic'], got {rope_scaling_type}"
181
+ )
182
+ if rope_scaling_factor is None or not isinstance(rope_scaling_factor, float) or rope_scaling_factor <= 1.0:
183
+ raise ValueError(f"`rope_scaling`'s factor field must be a float > 1, got {rope_scaling_factor}")
merges.txt ADDED
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+ "model.norm.weight": "model.safetensors"
684
+ }
685
+ }
modeling_stablelm.py ADDED
@@ -0,0 +1,1341 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ # coding=utf-8
2
+ # Copyright 2024 EleutherAI and the HuggingFace Inc. team. All rights reserved.
3
+ #
4
+ # This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
5
+ # and OPT implementations in this library. It has been modified from its
6
+ # original forms to accommodate minor architectural differences compared
7
+ # to GPT-NeoX and OPT used by the Meta AI team that trained the model.
8
+ #
9
+ # Licensed under the Apache License, Version 2.0 (the "License");
10
+ # you may not use this file except in compliance with the License.
11
+ # You may obtain a copy of the License at
12
+ #
13
+ # http://www.apache.org/licenses/LICENSE-2.0
14
+ #
15
+ # Unless required by applicable law or agreed to in writing, software
16
+ # distributed under the License is distributed on an "AS IS" BASIS,
17
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18
+ # See the License for the specific language governing permissions and
19
+ # limitations under the License.
20
+ """ PyTorch StableLM model."""
21
+ import math
22
+ from typing import List, Optional, Tuple, Union
23
+
24
+ import torch
25
+ import torch.nn.functional as F
26
+ import torch.utils.checkpoint
27
+ from torch import nn
28
+ from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
29
+
30
+ from transformers.activations import ACT2FN
31
+ from transformers.cache_utils import Cache, DynamicCache
32
+ from transformers.modeling_attn_mask_utils import _prepare_4d_causal_attention_mask
33
+ from transformers.modeling_outputs import BaseModelOutputWithPast, CausalLMOutputWithPast, SequenceClassifierOutputWithPast
34
+ from transformers.modeling_utils import PreTrainedModel
35
+ from transformers.utils import (
36
+ add_start_docstrings,
37
+ add_start_docstrings_to_model_forward,
38
+ is_flash_attn_2_available,
39
+ is_flash_attn_greater_or_equal_2_10,
40
+ logging,
41
+ replace_return_docstrings,
42
+ )
43
+ from .configuration_stablelm import StableLmConfig
44
+
45
+
46
+ if is_flash_attn_2_available():
47
+ from flash_attn import flash_attn_func, flash_attn_varlen_func
48
+ from flash_attn.bert_padding import index_first_axis, pad_input, unpad_input # noqa
49
+
50
+
51
+ logger = logging.get_logger(__name__)
52
+
53
+ _CONFIG_FOR_DOC = "StableLmConfig"
54
+
55
+
56
+ # Copied from transformers.models.llama.modeling_llama._get_unpad_data
57
+ def _get_unpad_data(attention_mask):
58
+ seqlens_in_batch = attention_mask.sum(dim=-1, dtype=torch.int32)
59
+ indices = torch.nonzero(attention_mask.flatten(), as_tuple=False).flatten()
60
+ max_seqlen_in_batch = seqlens_in_batch.max().item()
61
+ cu_seqlens = F.pad(torch.cumsum(seqlens_in_batch, dim=0, dtype=torch.int32), (1, 0))
62
+ return (
63
+ indices,
64
+ cu_seqlens,
65
+ max_seqlen_in_batch,
66
+ )
67
+
68
+
69
+ # Copied from transformers.models.mistral.modeling_mistral.MistralRotaryEmbedding with Mistral->StableLm
70
+ class StableLmRotaryEmbedding(nn.Module):
71
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
72
+ super().__init__()
73
+
74
+ self.dim = dim
75
+ self.max_position_embeddings = max_position_embeddings
76
+ self.base = base
77
+ inv_freq = 1.0 / (self.base ** (torch.arange(0, self.dim, 2, dtype=torch.int64).float().to(device) / self.dim))
78
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
79
+
80
+ # Build here to make `torch.jit.trace` work.
81
+ self._set_cos_sin_cache(
82
+ seq_len=max_position_embeddings, device=self.inv_freq.device, dtype=torch.get_default_dtype()
83
+ )
84
+
85
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
86
+ self.max_seq_len_cached = seq_len
87
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
88
+
89
+ freqs = torch.outer(t, self.inv_freq)
90
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
91
+ emb = torch.cat((freqs, freqs), dim=-1)
92
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
93
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
94
+
95
+ def forward(self, x, seq_len=None):
96
+ # x: [bs, num_attention_heads, seq_len, head_size]
97
+ if seq_len > self.max_seq_len_cached:
98
+ self._set_cos_sin_cache(seq_len=seq_len, device=x.device, dtype=x.dtype)
99
+
100
+ return (
101
+ self.cos_cached[:seq_len].to(dtype=x.dtype),
102
+ self.sin_cached[:seq_len].to(dtype=x.dtype),
103
+ )
104
+
105
+
106
+ # Copied from transformers.models.falcon.modeling_falcon.FalconLinearScalingRotaryEmbedding with Falcon->StableLm
107
+ class StableLmLinearScalingRotaryEmbedding(StableLmRotaryEmbedding):
108
+ """StableLmRotaryEmbedding extended with linear scaling. Credits to the Reddit user /u/kaiokendev"""
109
+
110
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
111
+ self.scaling_factor = scaling_factor
112
+ super().__init__(dim, max_position_embeddings, base, device)
113
+
114
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
115
+ self.max_seq_len_cached = seq_len
116
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
117
+ t = t / self.scaling_factor
118
+
119
+ freqs = torch.outer(t, self.inv_freq)
120
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
121
+ emb = torch.cat((freqs, freqs), dim=-1)
122
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
123
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
124
+
125
+
126
+ # Copied from transformers.models.falcon.modeling_falcon.FalconDynamicNTKScalingRotaryEmbedding with Falcon->StableLm
127
+ class StableLmDynamicNTKScalingRotaryEmbedding(StableLmRotaryEmbedding):
128
+ """StableLmRotaryEmbedding extended with Dynamic NTK scaling. Credits to the Reddit users /u/bloc97 and /u/emozilla"""
129
+
130
+ def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
131
+ self.scaling_factor = scaling_factor
132
+ super().__init__(dim, max_position_embeddings, base, device)
133
+
134
+ def _set_cos_sin_cache(self, seq_len, device, dtype):
135
+ self.max_seq_len_cached = seq_len
136
+
137
+ if seq_len > self.max_position_embeddings:
138
+ base = self.base * (
139
+ (self.scaling_factor * seq_len / self.max_position_embeddings) - (self.scaling_factor - 1)
140
+ ) ** (self.dim / (self.dim - 2))
141
+ inv_freq = 1.0 / (base ** (torch.arange(0, self.dim, 2, dtype=torch.int64).float().to(device) / self.dim))
142
+ self.register_buffer("inv_freq", inv_freq, persistent=False)
143
+
144
+ t = torch.arange(self.max_seq_len_cached, device=device, dtype=torch.int64).type_as(self.inv_freq)
145
+
146
+ freqs = torch.outer(t, self.inv_freq)
147
+ # Different from paper, but it uses a different permutation in order to obtain the same calculation
148
+ emb = torch.cat((freqs, freqs), dim=-1)
149
+ self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
150
+ self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
151
+
152
+
153
+ # Copied from transformers.models.llama.modeling_llama.rotate_half
154
+ def rotate_half(x):
155
+ """Rotates half the hidden dims of the input."""
156
+ x1 = x[..., : x.shape[-1] // 2]
157
+ x2 = x[..., x.shape[-1] // 2 :]
158
+ return torch.cat((-x2, x1), dim=-1)
159
+
160
+
161
+ # Copied from transformers.models.mistral.modeling_mistral.apply_rotary_pos_emb
162
+ def apply_rotary_pos_emb(q, k, cos, sin, position_ids, unsqueeze_dim=1):
163
+ """Applies Rotary Position Embedding to the query and key tensors.
164
+
165
+ Args:
166
+ q (`torch.Tensor`): The query tensor.
167
+ k (`torch.Tensor`): The key tensor.
168
+ cos (`torch.Tensor`): The cosine part of the rotary embedding.
169
+ sin (`torch.Tensor`): The sine part of the rotary embedding.
170
+ position_ids (`torch.Tensor`):
171
+ The position indices of the tokens corresponding to the query and key tensors. For example, this can be
172
+ used to pass offsetted position ids when working with a KV-cache.
173
+ unsqueeze_dim (`int`, *optional*, defaults to 1):
174
+ The 'unsqueeze_dim' argument specifies the dimension along which to unsqueeze cos[position_ids] and
175
+ sin[position_ids] so that they can be properly broadcasted to the dimensions of q and k. For example, note
176
+ that cos[position_ids] and sin[position_ids] have the shape [batch_size, seq_len, head_dim]. Then, if q and
177
+ k have the shape [batch_size, heads, seq_len, head_dim], then setting unsqueeze_dim=1 makes
178
+ cos[position_ids] and sin[position_ids] broadcastable to the shapes of q and k. Similarly, if q and k have
179
+ the shape [batch_size, seq_len, heads, head_dim], then set unsqueeze_dim=2.
180
+ Returns:
181
+ `tuple(torch.Tensor)` comprising of the query and key tensors rotated using the Rotary Position Embedding.
182
+ """
183
+ cos = cos[position_ids].unsqueeze(unsqueeze_dim)
184
+ sin = sin[position_ids].unsqueeze(unsqueeze_dim)
185
+ q_embed = (q * cos) + (rotate_half(q) * sin)
186
+ k_embed = (k * cos) + (rotate_half(k) * sin)
187
+ return q_embed, k_embed
188
+
189
+
190
+ # Copied from transformers.models.mistral.modeling_mistral.MistralMLP with Mistral->StableLm
191
+ class StableLmMLP(nn.Module):
192
+ def __init__(self, config):
193
+ super().__init__()
194
+ self.config = config
195
+ self.hidden_size = config.hidden_size
196
+ self.intermediate_size = config.intermediate_size
197
+ self.gate_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
198
+ self.up_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
199
+ self.down_proj = nn.Linear(self.intermediate_size, self.hidden_size, bias=False)
200
+ self.act_fn = ACT2FN[config.hidden_act]
201
+
202
+ def forward(self, x):
203
+ return self.down_proj(self.act_fn(self.gate_proj(x)) * self.up_proj(x))
204
+
205
+
206
+ # Copied from transformers.models.llama.modeling_llama.repeat_kv
207
+ def repeat_kv(hidden_states: torch.Tensor, n_rep: int) -> torch.Tensor:
208
+ """
209
+ This is the equivalent of torch.repeat_interleave(x, dim=1, repeats=n_rep). The hidden states go from (batch,
210
+ num_key_value_heads, seqlen, head_dim) to (batch, num_attention_heads, seqlen, head_dim)
211
+ """
212
+ batch, num_key_value_heads, slen, head_dim = hidden_states.shape
213
+ if n_rep == 1:
214
+ return hidden_states
215
+ hidden_states = hidden_states[:, :, None, :, :].expand(batch, num_key_value_heads, n_rep, slen, head_dim)
216
+ return hidden_states.reshape(batch, num_key_value_heads * n_rep, slen, head_dim)
217
+
218
+
219
+ class StableLmAttention(nn.Module):
220
+ """Multi-headed attention from 'Attention Is All You Need' paper"""
221
+
222
+ def __init__(self, config: StableLmConfig, layer_idx: Optional[int] = None):
223
+ super().__init__()
224
+ self.config = config
225
+ self.layer_idx = layer_idx
226
+ if layer_idx is None:
227
+ logger.warning_once(
228
+ f"Instantiating {self.__class__.__name__} without passing a `layer_idx` is not recommended and will "
229
+ "lead to errors during the forward call if caching is used. Please make sure to provide a `layer_idx` "
230
+ "when creating this class."
231
+ )
232
+
233
+ self.hidden_size = config.hidden_size
234
+ self.num_heads = config.num_attention_heads
235
+ self.head_dim = self.hidden_size // self.num_heads
236
+ self.num_key_value_heads = config.num_key_value_heads
237
+ self.num_key_value_groups = self.num_heads // self.num_key_value_heads
238
+ self.max_position_embeddings = config.max_position_embeddings
239
+ self.rope_theta = config.rope_theta
240
+ self.partial_rotary_factor = config.partial_rotary_factor
241
+ self.is_causal = True
242
+
243
+ if (self.head_dim * self.num_heads) != self.hidden_size:
244
+ raise ValueError(
245
+ f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
246
+ f" and `num_heads`: {self.num_heads})."
247
+ )
248
+ self.q_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=config.use_qkv_bias)
249
+ self.k_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=config.use_qkv_bias)
250
+ self.v_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=config.use_qkv_bias)
251
+ self.o_proj = nn.Linear(self.hidden_size, self.hidden_size, bias=False)
252
+
253
+ self.attention_dropout = nn.Dropout(config.attention_dropout)
254
+ self._init_rope()
255
+
256
+ # Copied from transformers.models.persimmon.modeling_persimmon.PersimmonAttention._init_rope with Persimmon->StableLm
257
+ def _init_rope(self):
258
+ if self.config.rope_scaling is None:
259
+ self.rotary_emb = StableLmRotaryEmbedding(
260
+ int(self.partial_rotary_factor * self.head_dim),
261
+ max_position_embeddings=self.max_position_embeddings,
262
+ base=self.rope_theta,
263
+ )
264
+ else:
265
+ scaling_type = self.config.rope_scaling["type"]
266
+ scaling_factor = self.config.rope_scaling["factor"]
267
+ if scaling_type == "linear":
268
+ self.rotary_emb = StableLmLinearScalingRotaryEmbedding(
269
+ int(self.partial_rotary_factor * self.head_dim),
270
+ max_position_embeddings=self.max_position_embeddings,
271
+ scaling_factor=scaling_factor,
272
+ base=self.rope_theta,
273
+ )
274
+ elif scaling_type == "dynamic":
275
+ self.rotary_emb = StableLmDynamicNTKScalingRotaryEmbedding(
276
+ int(self.partial_rotary_factor * self.head_dim),
277
+ max_position_embeddings=self.max_position_embeddings,
278
+ scaling_factor=scaling_factor,
279
+ base=self.rope_theta,
280
+ )
281
+ else:
282
+ raise ValueError(f"Unknown RoPE scaling type {scaling_type}")
283
+
284
+ def forward(
285
+ self,
286
+ hidden_states: torch.Tensor,
287
+ attention_mask: Optional[torch.Tensor] = None,
288
+ position_ids: Optional[torch.LongTensor] = None,
289
+ past_key_value: Optional[Cache] = None,
290
+ output_attentions: bool = False,
291
+ use_cache: bool = False,
292
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
293
+ bsz, q_len, _ = hidden_states.size()
294
+
295
+ query_states = self.q_proj(hidden_states)
296
+ key_states = self.k_proj(hidden_states)
297
+ value_states = self.v_proj(hidden_states)
298
+
299
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
300
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
301
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
302
+
303
+ kv_seq_len = key_states.shape[-2]
304
+ if past_key_value is not None:
305
+ if self.layer_idx is None:
306
+ raise ValueError(
307
+ f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
308
+ "for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
309
+ "with a layer index."
310
+ )
311
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
312
+ cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
313
+
314
+ # Partial rotary embedding
315
+ query_rot, query_pass = (
316
+ query_states[..., : self.rotary_emb.dim],
317
+ query_states[..., self.rotary_emb.dim :],
318
+ )
319
+ key_rot, key_pass = (
320
+ key_states[..., : self.rotary_emb.dim],
321
+ key_states[..., self.rotary_emb.dim :],
322
+ )
323
+ # [batch_size, seq_length, num_heads, head_dim // config.partial_rotary_factor]
324
+ query_rot, key_rot = apply_rotary_pos_emb(query_rot, key_rot, cos, sin, position_ids)
325
+
326
+ # [batch_size, seq_length, num_heads, head_dim]
327
+ query_states = torch.cat((query_rot, query_pass), dim=-1)
328
+ key_states = torch.cat((key_rot, key_pass), dim=-1)
329
+
330
+ if past_key_value is not None:
331
+ # Specific to RoPE models with partial rotation
332
+ cache_kwargs = {"sin": sin, "cos": cos, "partial_rotation_size": self.rotary_emb.dim}
333
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
334
+
335
+ # Repeat k/v heads if n_kv_heads < n_heads
336
+ key_states = repeat_kv(key_states, self.num_key_value_groups)
337
+ value_states = repeat_kv(value_states, self.num_key_value_groups)
338
+
339
+ attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
340
+
341
+ if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
342
+ raise ValueError(
343
+ f"Attention weights should be of size {(bsz, self.num_heads, q_len, kv_seq_len)}, but is"
344
+ f" {attn_weights.size()}"
345
+ )
346
+
347
+ if attention_mask is not None:
348
+ if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
349
+ raise ValueError(
350
+ f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
351
+ )
352
+ attn_weights = attn_weights + attention_mask
353
+
354
+ # upcast attention to fp32
355
+ attn_weights = nn.functional.softmax(attn_weights, dtype=torch.float32, dim=-1).to(query_states.dtype)
356
+ attn_weights = self.attention_dropout(attn_weights)
357
+
358
+ attn_output = torch.matmul(attn_weights, value_states)
359
+
360
+ if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
361
+ raise ValueError(
362
+ f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
363
+ f" {attn_output.size()}"
364
+ )
365
+
366
+ attn_output = attn_output.transpose(1, 2).contiguous()
367
+ attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
368
+
369
+ attn_output = self.o_proj(attn_output)
370
+
371
+ if not output_attentions:
372
+ attn_weights = None
373
+
374
+ return attn_output, attn_weights, past_key_value
375
+
376
+
377
+ class StableLmSdpaAttention(StableLmAttention):
378
+ def forward(
379
+ self,
380
+ hidden_states: torch.Tensor,
381
+ attention_mask: Optional[torch.Tensor] = None,
382
+ position_ids: Optional[torch.LongTensor] = None,
383
+ past_key_value: Optional[Cache] = None,
384
+ output_attentions: bool = False,
385
+ use_cache: bool = False,
386
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
387
+ if output_attentions:
388
+ # TODO: Improve this warning with e.g. `model.config.attn_implementation = "manual"` once this is implemented.
389
+ logger.warning_once(
390
+ "StableLmModel is using StableLmSdpaAttention, but `torch.nn.functional.scaled_dot_product_attention` does not support `output_attentions=True`. Falling back to the manual attention implementation, "
391
+ '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.'
392
+ )
393
+ return super().forward(
394
+ hidden_states=hidden_states,
395
+ attention_mask=attention_mask,
396
+ position_ids=position_ids,
397
+ past_key_value=past_key_value,
398
+ output_attentions=output_attentions,
399
+ use_cache=use_cache,
400
+ )
401
+
402
+ bsz, q_len, _ = hidden_states.size()
403
+
404
+ query_states = self.q_proj(hidden_states)
405
+ key_states = self.k_proj(hidden_states)
406
+ value_states = self.v_proj(hidden_states)
407
+
408
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
409
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
410
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
411
+
412
+ kv_seq_len = key_states.shape[-2]
413
+ if past_key_value is not None:
414
+ if self.layer_idx is None:
415
+ raise ValueError(
416
+ f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
417
+ "for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
418
+ "with a layer index."
419
+ )
420
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
421
+ cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
422
+
423
+ # Partial rotary embedding
424
+ query_rot, query_pass = (
425
+ query_states[..., : self.rotary_emb.dim],
426
+ query_states[..., self.rotary_emb.dim :],
427
+ )
428
+ key_rot, key_pass = (
429
+ key_states[..., : self.rotary_emb.dim],
430
+ key_states[..., self.rotary_emb.dim :],
431
+ )
432
+ # [batch_size, seq_length, num_heads, head_dim // config.partial_rotary_factor]
433
+ query_rot, key_rot = apply_rotary_pos_emb(query_rot, key_rot, cos, sin, position_ids)
434
+
435
+ # [batch_size, seq_length, num_heads, head_dim]
436
+ query_states = torch.cat((query_rot, query_pass), dim=-1)
437
+ key_states = torch.cat((key_rot, key_pass), dim=-1)
438
+
439
+ if past_key_value is not None:
440
+ # Specific to RoPE models with partial rotation
441
+ cache_kwargs = {"sin": sin, "cos": cos, "partial_rotation_size": self.rotary_emb.dim}
442
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
443
+
444
+ # Repeat k/v heads if n_kv_heads < n_heads
445
+ key_states = repeat_kv(key_states, self.num_key_value_groups)
446
+ value_states = repeat_kv(value_states, self.num_key_value_groups)
447
+
448
+ # SDPA with memory-efficient backend is currently (torch==2.1.2) bugged with non-contiguous inputs with custom attn_mask,
449
+ # Reference: https://github.com/pytorch/pytorch/issues/112577.
450
+ if query_states.device.type == "cuda" and attention_mask is not None:
451
+ query_states = query_states.contiguous()
452
+ key_states = key_states.contiguous()
453
+ value_states = value_states.contiguous()
454
+
455
+ attn_output = torch.nn.functional.scaled_dot_product_attention(
456
+ query_states,
457
+ key_states,
458
+ value_states,
459
+ attn_mask=attention_mask,
460
+ dropout_p=self.attention_dropout.p if self.training else 0.0,
461
+ # 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.
462
+ is_causal=self.is_causal and attention_mask is None and q_len > 1,
463
+ )
464
+
465
+ attn_output = attn_output.transpose(1, 2).contiguous()
466
+ attn_output = attn_output.view(bsz, q_len, self.hidden_size)
467
+
468
+ attn_output = self.o_proj(attn_output)
469
+
470
+ return attn_output, None, past_key_value
471
+
472
+
473
+ class StableLmFlashAttention2(StableLmAttention):
474
+ """
475
+ StableLM flash attention module. This module inherits from `StableLmAttention` as the weights of the module stays
476
+ untouched. The only required change would be on the forward pass where it needs to correctly call the public API of
477
+ flash attention and deal with padding tokens in case the input contains any of them.
478
+ """
479
+
480
+ # Copied from transformers.models.llama.modeling_llama.LlamaFlashAttention2.__init__
481
+ def __init__(self, *args, **kwargs):
482
+ super().__init__(*args, **kwargs)
483
+
484
+ # TODO: Should be removed once Flash Attention for RoCm is bumped to 2.1.
485
+ # 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.
486
+ # 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).
487
+ self._flash_attn_uses_top_left_mask = not is_flash_attn_greater_or_equal_2_10()
488
+
489
+ def forward(
490
+ self,
491
+ hidden_states: torch.Tensor,
492
+ attention_mask: Optional[torch.LongTensor] = None,
493
+ position_ids: Optional[torch.LongTensor] = None,
494
+ past_key_value: Optional[Cache] = None,
495
+ output_attentions: bool = False,
496
+ use_cache: bool = False,
497
+ **kwargs,
498
+ ) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
499
+ # StableLmFlashAttention2 attention does not support output_attentions
500
+
501
+ output_attentions = False
502
+
503
+ bsz, q_len, _ = hidden_states.size()
504
+
505
+ query_states = self.q_proj(hidden_states)
506
+ key_states = self.k_proj(hidden_states)
507
+ value_states = self.v_proj(hidden_states)
508
+
509
+ # Flash attention requires the input to have the shape
510
+ # batch_size x seq_length x head_dim x hidden_dim
511
+ # therefore we just need to keep the original shape
512
+ query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
513
+ key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
514
+ value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
515
+
516
+ kv_seq_len = key_states.shape[-2]
517
+ if past_key_value is not None:
518
+ if self.layer_idx is None:
519
+ raise ValueError(
520
+ f"The cache structure has changed since version v4.36. If you are using {self.__class__.__name__} "
521
+ "for auto-regressive decoding with k/v caching, please make sure to initialize the attention class "
522
+ "with a layer index."
523
+ )
524
+ kv_seq_len += past_key_value.get_usable_length(kv_seq_len, self.layer_idx)
525
+ cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
526
+
527
+ # Partial rotary embedding
528
+ query_rot, query_pass = (
529
+ query_states[..., : self.rotary_emb.dim],
530
+ query_states[..., self.rotary_emb.dim :],
531
+ )
532
+ key_rot, key_pass = (
533
+ key_states[..., : self.rotary_emb.dim],
534
+ key_states[..., self.rotary_emb.dim :],
535
+ )
536
+ query_rot, key_rot = apply_rotary_pos_emb(query_rot, key_rot, cos, sin, position_ids)
537
+
538
+ # [batch_size, seq_length, num_heads, head_dim]
539
+ query_states = torch.cat((query_rot, query_pass), dim=-1)
540
+ key_states = torch.cat((key_rot, key_pass), dim=-1)
541
+
542
+ if past_key_value is not None:
543
+ cache_kwargs = {"sin": sin, "cos": cos, "partial_rotation_size": self.rotary_emb.dim}
544
+ key_states, value_states = past_key_value.update(key_states, value_states, self.layer_idx, cache_kwargs)
545
+
546
+ # TODO: These transpose are quite inefficient but Flash Attention requires the layout [batch_size, sequence_length, num_heads, head_dim]. We would need to refactor the KV cache
547
+ # to be able to avoid many of these transpose/reshape/view.
548
+ query_states = query_states.transpose(1, 2)
549
+ key_states = key_states.transpose(1, 2)
550
+ value_states = value_states.transpose(1, 2)
551
+
552
+ dropout_rate = self.attention_dropout if self.training else 0.0
553
+
554
+ attn_output = self._flash_attention_forward(
555
+ query_states,
556
+ key_states,
557
+ value_states,
558
+ attention_mask,
559
+ q_len,
560
+ dropout=dropout_rate,
561
+ )
562
+
563
+ attn_output = attn_output.reshape(bsz, q_len, self.hidden_size).contiguous()
564
+ attn_output = self.o_proj(attn_output)
565
+
566
+ if not output_attentions:
567
+ attn_weights = None
568
+
569
+ return attn_output, attn_weights, past_key_value
570
+
571
+ # Copied from transformers.models.llama.modeling_llama.LlamaFlashAttention2._flash_attention_forward
572
+ def _flash_attention_forward(
573
+ self, query_states, key_states, value_states, attention_mask, query_length, dropout=0.0, softmax_scale=None
574
+ ):
575
+ """
576
+ Calls the forward method of Flash Attention - if the input hidden states contain at least one padding token
577
+ first unpad the input, then computes the attention scores and pad the final attention scores.
578
+
579
+ Args:
580
+ query_states (`torch.Tensor`):
581
+ Input query states to be passed to Flash Attention API
582
+ key_states (`torch.Tensor`):
583
+ Input key states to be passed to Flash Attention API
584
+ value_states (`torch.Tensor`):
585
+ Input value states to be passed to Flash Attention API
586
+ attention_mask (`torch.Tensor`):
587
+ The padding mask - corresponds to a tensor of size `(batch_size, seq_len)` where 0 stands for the
588
+ position of padding tokens and 1 for the position of non-padding tokens.
589
+ dropout (`int`, *optional*):
590
+ Attention dropout
591
+ softmax_scale (`float`, *optional*):
592
+ The scaling of QK^T before applying softmax. Default to 1 / sqrt(head_dim)
593
+ """
594
+ if not self._flash_attn_uses_top_left_mask:
595
+ causal = self.is_causal
596
+ else:
597
+ # 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__.
598
+ causal = self.is_causal and query_length != 1
599
+
600
+ # Contains at least one padding token in the sequence
601
+ if attention_mask is not None:
602
+ batch_size = query_states.shape[0]
603
+ query_states, key_states, value_states, indices_q, cu_seq_lens, max_seq_lens = self._upad_input(
604
+ query_states, key_states, value_states, attention_mask, query_length
605
+ )
606
+
607
+ cu_seqlens_q, cu_seqlens_k = cu_seq_lens
608
+ max_seqlen_in_batch_q, max_seqlen_in_batch_k = max_seq_lens
609
+
610
+ attn_output_unpad = flash_attn_varlen_func(
611
+ query_states,
612
+ key_states,
613
+ value_states,
614
+ cu_seqlens_q=cu_seqlens_q,
615
+ cu_seqlens_k=cu_seqlens_k,
616
+ max_seqlen_q=max_seqlen_in_batch_q,
617
+ max_seqlen_k=max_seqlen_in_batch_k,
618
+ dropout_p=dropout,
619
+ softmax_scale=softmax_scale,
620
+ causal=causal,
621
+ )
622
+
623
+ attn_output = pad_input(attn_output_unpad, indices_q, batch_size, query_length)
624
+ else:
625
+ attn_output = flash_attn_func(
626
+ query_states, key_states, value_states, dropout, softmax_scale=softmax_scale, causal=causal
627
+ )
628
+
629
+ return attn_output
630
+
631
+ # Copied from transformers.models.llama.modeling_llama.LlamaFlashAttention2._upad_input
632
+ def _upad_input(self, query_layer, key_layer, value_layer, attention_mask, query_length):
633
+ indices_k, cu_seqlens_k, max_seqlen_in_batch_k = _get_unpad_data(attention_mask)
634
+ batch_size, kv_seq_len, num_key_value_heads, head_dim = key_layer.shape
635
+
636
+ key_layer = index_first_axis(
637
+ key_layer.reshape(batch_size * kv_seq_len, num_key_value_heads, head_dim), indices_k
638
+ )
639
+ value_layer = index_first_axis(
640
+ value_layer.reshape(batch_size * kv_seq_len, num_key_value_heads, head_dim), indices_k
641
+ )
642
+ if query_length == kv_seq_len:
643
+ query_layer = index_first_axis(
644
+ query_layer.reshape(batch_size * kv_seq_len, self.num_heads, head_dim), indices_k
645
+ )
646
+ cu_seqlens_q = cu_seqlens_k
647
+ max_seqlen_in_batch_q = max_seqlen_in_batch_k
648
+ indices_q = indices_k
649
+ elif query_length == 1:
650
+ max_seqlen_in_batch_q = 1
651
+ cu_seqlens_q = torch.arange(
652
+ batch_size + 1, dtype=torch.int32, device=query_layer.device
653
+ ) # There is a memcpy here, that is very bad.
654
+ indices_q = cu_seqlens_q[:-1]
655
+ query_layer = query_layer.squeeze(1)
656
+ else:
657
+ # The -q_len: slice assumes left padding.
658
+ attention_mask = attention_mask[:, -query_length:]
659
+ query_layer, indices_q, cu_seqlens_q, max_seqlen_in_batch_q = unpad_input(query_layer, attention_mask)
660
+
661
+ return (
662
+ query_layer,
663
+ key_layer,
664
+ value_layer,
665
+ indices_q,
666
+ (cu_seqlens_q, cu_seqlens_k),
667
+ (max_seqlen_in_batch_q, max_seqlen_in_batch_k),
668
+ )
669
+
670
+
671
+ ATTENTION_CLASSES = {
672
+ "eager": StableLmAttention,
673
+ "sdpa": StableLmSdpaAttention,
674
+ "flash_attention_2": StableLmFlashAttention2,
675
+ }
676
+
677
+
678
+ class StableLmDecoderLayer(nn.Module):
679
+ def __init__(self, config: StableLmConfig, layer_idx: int):
680
+ super().__init__()
681
+ self.hidden_size = config.hidden_size
682
+ self.self_attn = ATTENTION_CLASSES[config._attn_implementation](config, layer_idx=layer_idx)
683
+ self.mlp = StableLmMLP(config)
684
+ self.input_layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
685
+ self.post_attention_layernorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
686
+ self.dropout = nn.Dropout(config.hidden_dropout)
687
+
688
+ def forward(
689
+ self,
690
+ hidden_states: torch.Tensor,
691
+ attention_mask: Optional[torch.Tensor] = None,
692
+ position_ids: Optional[torch.LongTensor] = None,
693
+ past_key_value: Optional[Tuple[torch.Tensor]] = None,
694
+ output_attentions: Optional[bool] = False,
695
+ use_cache: Optional[bool] = False,
696
+ ) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
697
+ """
698
+ Args:
699
+ hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)`
700
+ attention_mask (`torch.FloatTensor`, *optional*): attention mask of size
701
+ `(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
702
+ position_ids (`torch.LongTensor` of shape `({0})`, *optional*):
703
+ Indices of positions of each input sequence tokens in the position embeddings. Selected in the range
704
+ `[0, config.n_positions - 1]`.
705
+
706
+ [What are position IDs?](../glossary#position-ids)
707
+ past_key_value (`Tuple(torch.FloatTensor)`, *optional*):
708
+ cached past key and value projection states
709
+ output_attentions (`bool`, *optional*):
710
+ Whether or not to return the attentions tensors of all attention layers. See `attentions` under
711
+ returned tensors for more detail.
712
+ use_cache (`bool`, *optional*):
713
+ If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
714
+ (see `past_key_values`).
715
+ """
716
+
717
+ residual = hidden_states
718
+
719
+ hidden_states = self.input_layernorm(hidden_states)
720
+
721
+ # Self Attention
722
+ hidden_states, self_attn_weights, present_key_value = self.self_attn(
723
+ hidden_states=hidden_states,
724
+ attention_mask=attention_mask,
725
+ position_ids=position_ids,
726
+ past_key_value=past_key_value,
727
+ output_attentions=output_attentions,
728
+ use_cache=use_cache,
729
+ )
730
+ hidden_states = residual + hidden_states
731
+
732
+ # Fully Connected
733
+ residual = hidden_states
734
+ hidden_states = self.post_attention_layernorm(hidden_states)
735
+ hidden_states = self.mlp(hidden_states)
736
+
737
+ hidden_states = self.dropout(hidden_states)
738
+ hidden_states = hidden_states + residual
739
+
740
+ outputs = (hidden_states,)
741
+
742
+ if output_attentions:
743
+ outputs += (self_attn_weights,)
744
+
745
+ if use_cache:
746
+ outputs += (present_key_value,)
747
+
748
+ return outputs
749
+
750
+
751
+ STABLELM_START_DOCSTRING = r"""
752
+ This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
753
+ library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
754
+ etc.)
755
+
756
+ This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
757
+ Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
758
+ and behavior.
759
+
760
+ Parameters:
761
+ config ([`StableLmConfig`]):
762
+ Model configuration class with all the parameters of the model. Initializing with a config file does not
763
+ load the weights associated with the model, only the configuration. Check out the
764
+ [`~PreTrainedModel.from_pretrained`] method to load the model weights.
765
+ """
766
+
767
+
768
+ @add_start_docstrings(
769
+ "The bare StableLm Model outputting raw hidden-states without any specific head on top.",
770
+ STABLELM_START_DOCSTRING,
771
+ )
772
+ class StableLmPreTrainedModel(PreTrainedModel):
773
+ config_class = StableLmConfig
774
+ base_model_prefix = "model"
775
+ supports_gradient_checkpointing = True
776
+ _no_split_modules = ["StableLmDecoderLayer"]
777
+ _skip_keys_device_placement = "past_key_values"
778
+ _supports_flash_attn_2 = True
779
+ _supports_cache_class = True
780
+ _supports_sdpa = True
781
+
782
+ def _init_weights(self, module):
783
+ std = self.config.initializer_range
784
+ if isinstance(module, nn.Linear):
785
+ module.weight.data.normal_(mean=0.0, std=std)
786
+ if module.bias is not None:
787
+ module.bias.data.zero_()
788
+ elif isinstance(module, nn.Embedding):
789
+ module.weight.data.normal_(mean=0.0, std=std)
790
+ if module.padding_idx is not None:
791
+ module.weight.data[module.padding_idx].zero_()
792
+
793
+
794
+ STABLELM_INPUTS_DOCSTRING = r"""
795
+ Args:
796
+ input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
797
+ Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
798
+ it.
799
+
800
+ Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
801
+ [`PreTrainedTokenizer.__call__`] for details.
802
+
803
+ [What are input IDs?](../glossary#input-ids)
804
+ attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
805
+ Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
806
+
807
+ - 1 for tokens that are **not masked**,
808
+ - 0 for tokens that are **masked**.
809
+
810
+ [What are attention masks?](../glossary#attention-mask)
811
+
812
+ Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
813
+ [`PreTrainedTokenizer.__call__`] for details.
814
+
815
+ If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see
816
+ `past_key_values`).
817
+
818
+ If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]
819
+ and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more
820
+ information on the default strategy.
821
+
822
+ - 1 indicates the head is **not masked**,
823
+ - 0 indicates the head is **masked**.
824
+ position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
825
+ Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
826
+ config.n_positions - 1]`.
827
+
828
+ [What are position IDs?](../glossary#position-ids)
829
+ past_key_values (`Cache` or `tuple(tuple(torch.FloatTensor))`, *optional*):
830
+ Pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
831
+ blocks) that can be used to speed up sequential decoding. This typically consists in the `past_key_values`
832
+ returned by the model at a previous stage of decoding, when `use_cache=True` or `config.use_cache=True`.
833
+
834
+ Two formats are allowed:
835
+ - a [`~cache_utils.Cache`] instance;
836
+ - Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of
837
+ shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`). This is also known as the legacy
838
+ cache format.
839
+
840
+ The model will output the same cache format that is fed as input. If no `past_key_values` are passed, the
841
+ legacy cache format will be returned.
842
+
843
+ If `past_key_values` are used, the user can optionally input only the last `input_ids` (those that don't
844
+ have their past key value states given to this model) of shape `(batch_size, 1)` instead of all `input_ids`
845
+ of shape `(batch_size, sequence_length)`.
846
+ inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
847
+ Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
848
+ is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
849
+ model's internal embedding lookup matrix.
850
+ use_cache (`bool`, *optional*):
851
+ If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
852
+ `past_key_values`).
853
+ output_attentions (`bool`, *optional*):
854
+ Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
855
+ tensors for more detail.
856
+ output_hidden_states (`bool`, *optional*):
857
+ Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
858
+ more detail.
859
+ return_dict (`bool`, *optional*):
860
+ Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
861
+ """
862
+
863
+
864
+ @add_start_docstrings(
865
+ "The bare StableLm Model outputting raw hidden-states without any specific head on top.",
866
+ STABLELM_START_DOCSTRING,
867
+ )
868
+ class StableLmModel(StableLmPreTrainedModel):
869
+ """
870
+ Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`StableLmDecoderLayer`]
871
+
872
+ Args:
873
+ config: StableLmConfig
874
+ """
875
+
876
+ def __init__(self, config: StableLmConfig):
877
+ super().__init__(config)
878
+ self.padding_idx = config.pad_token_id
879
+ self.vocab_size = config.vocab_size
880
+
881
+ self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
882
+ self.layers = nn.ModuleList(
883
+ [StableLmDecoderLayer(config, layer_idx) for layer_idx in range(config.num_hidden_layers)]
884
+ )
885
+ self.norm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
886
+
887
+ self._attn_implementation = config._attn_implementation
888
+ self.gradient_checkpointing = False
889
+ # Initialize weights and apply final processing
890
+ self.post_init()
891
+
892
+ def get_input_embeddings(self):
893
+ return self.embed_tokens
894
+
895
+ def set_input_embeddings(self, value):
896
+ self.embed_tokens = value
897
+
898
+ @add_start_docstrings_to_model_forward(STABLELM_INPUTS_DOCSTRING)
899
+ def forward(
900
+ self,
901
+ input_ids: torch.LongTensor = None,
902
+ attention_mask: Optional[torch.Tensor] = None,
903
+ position_ids: Optional[torch.LongTensor] = None,
904
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
905
+ inputs_embeds: Optional[torch.FloatTensor] = None,
906
+ use_cache: Optional[bool] = None,
907
+ output_attentions: Optional[bool] = None,
908
+ output_hidden_states: Optional[bool] = None,
909
+ return_dict: Optional[bool] = None,
910
+ ) -> Union[Tuple, BaseModelOutputWithPast]:
911
+ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
912
+ output_hidden_states = (
913
+ output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
914
+ )
915
+ use_cache = use_cache if use_cache is not None else self.config.use_cache
916
+
917
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
918
+
919
+ # retrieve input_ids and inputs_embeds
920
+ if input_ids is not None and inputs_embeds is not None:
921
+ raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time")
922
+ elif input_ids is not None:
923
+ batch_size, seq_length = input_ids.shape
924
+ elif inputs_embeds is not None:
925
+ batch_size, seq_length, _ = inputs_embeds.shape
926
+ else:
927
+ raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds")
928
+
929
+ seq_length_with_past = seq_length
930
+ past_key_values_length = 0
931
+
932
+ if self.gradient_checkpointing and self.training:
933
+ if use_cache:
934
+ logger.warning_once(
935
+ "`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
936
+ )
937
+ use_cache = False
938
+
939
+ if use_cache:
940
+ use_legacy_cache = not isinstance(past_key_values, Cache)
941
+ if use_legacy_cache:
942
+ past_key_values = DynamicCache.from_legacy_cache(past_key_values)
943
+ past_key_values_length = past_key_values.get_usable_length(seq_length)
944
+ seq_length_with_past = seq_length_with_past + past_key_values_length
945
+
946
+ if position_ids is None:
947
+ device = input_ids.device if input_ids is not None else inputs_embeds.device
948
+ position_ids = torch.arange(
949
+ past_key_values_length, seq_length + past_key_values_length, dtype=torch.long, device=device
950
+ )
951
+ position_ids = position_ids.unsqueeze(0)
952
+
953
+ if inputs_embeds is None:
954
+ inputs_embeds = self.embed_tokens(input_ids)
955
+ # embed positions
956
+ if self._attn_implementation == "flash_attention_2":
957
+ # 2d mask is passed through the layers
958
+ attention_mask = attention_mask if (attention_mask is not None and 0 in attention_mask) else None
959
+ # for output_attentions case used fallback to eager attention realization
960
+ elif self._attn_implementation == "sdpa" and not output_attentions:
961
+ attention_mask = _prepare_4d_causal_attention_mask_for_sdpa(
962
+ attention_mask, (batch_size, seq_length), inputs_embeds, past_key_values_length
963
+ )
964
+ else:
965
+ # 4d mask is passed through the layers
966
+ attention_mask = _prepare_4d_causal_attention_mask(
967
+ attention_mask, (batch_size, seq_length), inputs_embeds, past_key_values_length
968
+ )
969
+
970
+ hidden_states = inputs_embeds
971
+
972
+ # decoder layers
973
+ all_hidden_states = () if output_hidden_states else None
974
+ all_self_attns = () if output_attentions else None
975
+ next_decoder_cache = None
976
+
977
+ for decoder_layer in self.layers:
978
+ if output_hidden_states:
979
+ all_hidden_states += (hidden_states,)
980
+
981
+ if self.gradient_checkpointing and self.training:
982
+ layer_outputs = self._gradient_checkpointing_func(
983
+ decoder_layer.__call__,
984
+ hidden_states,
985
+ attention_mask,
986
+ position_ids,
987
+ past_key_values,
988
+ output_attentions,
989
+ )
990
+ else:
991
+ layer_outputs = decoder_layer(
992
+ hidden_states,
993
+ attention_mask=attention_mask,
994
+ position_ids=position_ids,
995
+ past_key_value=past_key_values,
996
+ output_attentions=output_attentions,
997
+ use_cache=use_cache,
998
+ )
999
+
1000
+ hidden_states = layer_outputs[0]
1001
+
1002
+ if use_cache:
1003
+ next_decoder_cache = layer_outputs[2 if output_attentions else 1]
1004
+
1005
+ if output_attentions:
1006
+ all_self_attns += (layer_outputs[1],)
1007
+
1008
+ hidden_states = self.norm(hidden_states)
1009
+
1010
+ # add hidden states from the last decoder layer
1011
+ if output_hidden_states:
1012
+ all_hidden_states += (hidden_states,)
1013
+
1014
+ next_cache = None
1015
+ if use_cache:
1016
+ next_cache = next_decoder_cache.to_legacy_cache() if use_legacy_cache else next_decoder_cache
1017
+
1018
+ if not return_dict:
1019
+ return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
1020
+ return BaseModelOutputWithPast(
1021
+ last_hidden_state=hidden_states,
1022
+ past_key_values=next_cache,
1023
+ hidden_states=all_hidden_states,
1024
+ attentions=all_self_attns,
1025
+ )
1026
+
1027
+
1028
+ # Copied from transformers.models.persimmon.modeling_persimmon.PersimmonForCausalLM with PERSIMMON->STABLELM,Persimmon->StableLm
1029
+ class StableLmForCausalLM(StableLmPreTrainedModel):
1030
+ _tied_weights_keys = ["lm_head.weight"]
1031
+
1032
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.__init__ with LLAMA->STABLELM,Llama->StableLm
1033
+ def __init__(self, config):
1034
+ super().__init__(config)
1035
+ self.model = StableLmModel(config)
1036
+ self.vocab_size = config.vocab_size
1037
+ self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
1038
+
1039
+ # Initialize weights and apply final processing
1040
+ self.post_init()
1041
+
1042
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_input_embeddings
1043
+ def get_input_embeddings(self):
1044
+ return self.model.embed_tokens
1045
+
1046
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_input_embeddings
1047
+ def set_input_embeddings(self, value):
1048
+ self.model.embed_tokens = value
1049
+
1050
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_output_embeddings
1051
+ def get_output_embeddings(self):
1052
+ return self.lm_head
1053
+
1054
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_output_embeddings
1055
+ def set_output_embeddings(self, new_embeddings):
1056
+ self.lm_head = new_embeddings
1057
+
1058
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.set_decoder
1059
+ def set_decoder(self, decoder):
1060
+ self.model = decoder
1061
+
1062
+ # Copied from transformers.models.llama.modeling_llama.LlamaForCausalLM.get_decoder
1063
+ def get_decoder(self):
1064
+ return self.model
1065
+
1066
+ @add_start_docstrings_to_model_forward(STABLELM_INPUTS_DOCSTRING)
1067
+ @replace_return_docstrings(output_type=CausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
1068
+ # Ignore copy
1069
+ def forward(
1070
+ self,
1071
+ input_ids: torch.LongTensor = None,
1072
+ attention_mask: Optional[torch.Tensor] = None,
1073
+ position_ids: Optional[torch.LongTensor] = None,
1074
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
1075
+ inputs_embeds: Optional[torch.FloatTensor] = None,
1076
+ labels: Optional[torch.LongTensor] = None,
1077
+ use_cache: Optional[bool] = None,
1078
+ output_attentions: Optional[bool] = None,
1079
+ output_hidden_states: Optional[bool] = None,
1080
+ return_dict: Optional[bool] = None,
1081
+ ) -> Union[Tuple, CausalLMOutputWithPast]:
1082
+ r"""
1083
+ Args:
1084
+ labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
1085
+ Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
1086
+ config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
1087
+ (masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
1088
+
1089
+ Returns:
1090
+
1091
+ Example:
1092
+
1093
+ ```python
1094
+ >>> from transformers import AutoTokenizer, StableLmForCausalLM
1095
+
1096
+ >>> model = StableLmForCausalLM.from_pretrained("stabilityai/stablelm-3b-4e1t")
1097
+ >>> tokenizer = AutoTokenizer.from_pretrained("stabilityai/stablelm-3b-4e1t")
1098
+
1099
+ >>> prompt = "The weather is always wonderful in"
1100
+ >>> inputs = tokenizer(prompt, return_tensors="pt")
1101
+
1102
+ >>> # Generate
1103
+ >>> generate_ids = model.generate(inputs.input_ids, max_length=30)
1104
+ >>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
1105
+ 'The weather is always wonderful in the summer in the city of San Diego. The city is located on the coast of the Pacific Ocean and is surrounded by'
1106
+ ```"""
1107
+
1108
+ output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
1109
+ output_hidden_states = (
1110
+ output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
1111
+ )
1112
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
1113
+
1114
+ outputs = self.model(
1115
+ input_ids=input_ids,
1116
+ attention_mask=attention_mask,
1117
+ position_ids=position_ids,
1118
+ past_key_values=past_key_values,
1119
+ inputs_embeds=inputs_embeds,
1120
+ use_cache=use_cache,
1121
+ output_attentions=output_attentions,
1122
+ output_hidden_states=output_hidden_states,
1123
+ return_dict=return_dict,
1124
+ )
1125
+
1126
+ hidden_states = outputs[0]
1127
+ logits = self.lm_head(hidden_states)
1128
+
1129
+ loss = None
1130
+ if labels is not None:
1131
+ # Shift so that tokens < n predict n
1132
+ shift_logits = logits[..., :-1, :].contiguous()
1133
+ shift_labels = labels[..., 1:].contiguous()
1134
+ # Flatten the tokens
1135
+ loss_fct = CrossEntropyLoss()
1136
+ shift_logits = shift_logits.view(-1, self.config.vocab_size)
1137
+ shift_labels = shift_labels.view(-1)
1138
+ # Enable model parallelism
1139
+ shift_labels = shift_labels.to(shift_logits.device)
1140
+ loss = loss_fct(shift_logits, shift_labels)
1141
+
1142
+ if not return_dict:
1143
+ output = (logits,) + outputs[1:]
1144
+ return (loss,) + output if loss is not None else output
1145
+
1146
+ return CausalLMOutputWithPast(
1147
+ loss=loss,
1148
+ logits=logits,
1149
+ past_key_values=outputs.past_key_values,
1150
+ hidden_states=outputs.hidden_states,
1151
+ attentions=outputs.attentions,
1152
+ )
1153
+
1154
+ def prepare_inputs_for_generation(
1155
+ self, input_ids, past_key_values=None, attention_mask=None, inputs_embeds=None, **kwargs
1156
+ ):
1157
+ if past_key_values is not None:
1158
+ if isinstance(past_key_values, Cache):
1159
+ cache_length = past_key_values.get_seq_length()
1160
+ past_length = past_key_values.seen_tokens
1161
+ max_cache_length = past_key_values.get_max_length()
1162
+ else:
1163
+ cache_length = past_length = past_key_values[0][0].shape[2]
1164
+ max_cache_length = None
1165
+
1166
+ # Keep only the unprocessed tokens:
1167
+ # 1 - If the length of the attention_mask exceeds the length of input_ids, then we are in a setting where
1168
+ # some of the inputs are exclusively passed as part of the cache (e.g. when passing input_embeds as
1169
+ # input)
1170
+ if attention_mask is not None and attention_mask.shape[1] > input_ids.shape[1]:
1171
+ input_ids = input_ids[:, -(attention_mask.shape[1] - past_length) :]
1172
+ # 2 - If the past_length is smaller than input_ids', then input_ids holds all input tokens. We can discard
1173
+ # input_ids based on the past_length.
1174
+ elif past_length < input_ids.shape[1]:
1175
+ input_ids = input_ids[:, past_length:]
1176
+ # 3 - Otherwise (past_length >= input_ids.shape[1]), let's assume input_ids only has unprocessed tokens.
1177
+
1178
+ # If we are about to go beyond the maximum cache length, we need to crop the input attention mask.
1179
+ if (
1180
+ max_cache_length is not None
1181
+ and attention_mask is not None
1182
+ and cache_length + input_ids.shape[1] > max_cache_length
1183
+ ):
1184
+ attention_mask = attention_mask[:, -max_cache_length:]
1185
+
1186
+ position_ids = kwargs.get("position_ids", None)
1187
+ if attention_mask is not None and position_ids is None:
1188
+ # create position_ids on the fly for batch generation
1189
+ position_ids = attention_mask.long().cumsum(-1) - 1
1190
+ position_ids.masked_fill_(attention_mask == 0, 1)
1191
+ if past_key_values:
1192
+ position_ids = position_ids[:, -input_ids.shape[1] :]
1193
+
1194
+ # if `inputs_embeds` are passed, we only want to use them in the 1st generation step
1195
+ if inputs_embeds is not None and past_key_values is None:
1196
+ model_inputs = {"inputs_embeds": inputs_embeds}
1197
+ else:
1198
+ model_inputs = {"input_ids": input_ids}
1199
+
1200
+ model_inputs.update(
1201
+ {
1202
+ "position_ids": position_ids,
1203
+ "past_key_values": past_key_values,
1204
+ "use_cache": kwargs.get("use_cache"),
1205
+ "attention_mask": attention_mask,
1206
+ }
1207
+ )
1208
+ return model_inputs
1209
+
1210
+ @staticmethod
1211
+ def _reorder_cache(past_key_values, beam_idx):
1212
+ reordered_past = ()
1213
+ for layer_past in past_key_values:
1214
+ reordered_past += (
1215
+ tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
1216
+ )
1217
+ return reordered_past
1218
+
1219
+
1220
+ @add_start_docstrings(
1221
+ """
1222
+ The StableLm transformer with a sequence classification head on top (linear layer).
1223
+
1224
+ [`StableLmForSequenceClassification`] uses the last token in order to do the classification, as other causal
1225
+ models (e.g. GPT-2) do.
1226
+
1227
+ Since it does classification on the last token, it requires to know the position of the last token. If a
1228
+ `pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
1229
+ no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
1230
+ padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
1231
+ each row of the batch).
1232
+ """,
1233
+ STABLELM_START_DOCSTRING,
1234
+ )
1235
+ # Copied from transformers.models.llama.modeling_llama.LlamaForSequenceClassification with LLAMA->STABLELM,Llama->StableLm
1236
+ class StableLmForSequenceClassification(StableLmPreTrainedModel):
1237
+ def __init__(self, config):
1238
+ super().__init__(config)
1239
+ self.num_labels = config.num_labels
1240
+ self.model = StableLmModel(config)
1241
+ self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
1242
+
1243
+ # Initialize weights and apply final processing
1244
+ self.post_init()
1245
+
1246
+ def get_input_embeddings(self):
1247
+ return self.model.embed_tokens
1248
+
1249
+ def set_input_embeddings(self, value):
1250
+ self.model.embed_tokens = value
1251
+
1252
+ @add_start_docstrings_to_model_forward(STABLELM_INPUTS_DOCSTRING)
1253
+ def forward(
1254
+ self,
1255
+ input_ids: torch.LongTensor = None,
1256
+ attention_mask: Optional[torch.Tensor] = None,
1257
+ position_ids: Optional[torch.LongTensor] = None,
1258
+ past_key_values: Optional[List[torch.FloatTensor]] = None,
1259
+ inputs_embeds: Optional[torch.FloatTensor] = None,
1260
+ labels: Optional[torch.LongTensor] = None,
1261
+ use_cache: Optional[bool] = None,
1262
+ output_attentions: Optional[bool] = None,
1263
+ output_hidden_states: Optional[bool] = None,
1264
+ return_dict: Optional[bool] = None,
1265
+ ) -> Union[Tuple, SequenceClassifierOutputWithPast]:
1266
+ r"""
1267
+ labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
1268
+ Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
1269
+ config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
1270
+ `config.num_labels > 1` a classification loss is computed (Cross-Entropy).
1271
+ """
1272
+ return_dict = return_dict if return_dict is not None else self.config.use_return_dict
1273
+
1274
+ transformer_outputs = self.model(
1275
+ input_ids,
1276
+ attention_mask=attention_mask,
1277
+ position_ids=position_ids,
1278
+ past_key_values=past_key_values,
1279
+ inputs_embeds=inputs_embeds,
1280
+ use_cache=use_cache,
1281
+ output_attentions=output_attentions,
1282
+ output_hidden_states=output_hidden_states,
1283
+ return_dict=return_dict,
1284
+ )
1285
+ hidden_states = transformer_outputs[0]
1286
+ logits = self.score(hidden_states)
1287
+
1288
+ if input_ids is not None:
1289
+ batch_size = input_ids.shape[0]
1290
+ else:
1291
+ batch_size = inputs_embeds.shape[0]
1292
+
1293
+ if self.config.pad_token_id is None and batch_size != 1:
1294
+ raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
1295
+ if self.config.pad_token_id is None:
1296
+ sequence_lengths = -1
1297
+ else:
1298
+ if input_ids is not None:
1299
+ # if no pad token found, use modulo instead of reverse indexing for ONNX compatibility
1300
+ sequence_lengths = torch.eq(input_ids, self.config.pad_token_id).int().argmax(-1) - 1
1301
+ sequence_lengths = sequence_lengths % input_ids.shape[-1]
1302
+ sequence_lengths = sequence_lengths.to(logits.device)
1303
+ else:
1304
+ sequence_lengths = -1
1305
+
1306
+ pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
1307
+
1308
+ loss = None
1309
+ if labels is not None:
1310
+ labels = labels.to(logits.device)
1311
+ if self.config.problem_type is None:
1312
+ if self.num_labels == 1:
1313
+ self.config.problem_type = "regression"
1314
+ elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
1315
+ self.config.problem_type = "single_label_classification"
1316
+ else:
1317
+ self.config.problem_type = "multi_label_classification"
1318
+
1319
+ if self.config.problem_type == "regression":
1320
+ loss_fct = MSELoss()
1321
+ if self.num_labels == 1:
1322
+ loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
1323
+ else:
1324
+ loss = loss_fct(pooled_logits, labels)
1325
+ elif self.config.problem_type == "single_label_classification":
1326
+ loss_fct = CrossEntropyLoss()
1327
+ loss = loss_fct(pooled_logits.view(-1, self.num_labels), labels.view(-1))
1328
+ elif self.config.problem_type == "multi_label_classification":
1329
+ loss_fct = BCEWithLogitsLoss()
1330
+ loss = loss_fct(pooled_logits, labels)
1331
+ if not return_dict:
1332
+ output = (pooled_logits,) + transformer_outputs[1:]
1333
+ return ((loss,) + output) if loss is not None else output
1334
+
1335
+ return SequenceClassifierOutputWithPast(
1336
+ loss=loss,
1337
+ logits=pooled_logits,
1338
+ past_key_values=transformer_outputs.past_key_values,
1339
+ hidden_states=transformer_outputs.hidden_states,
1340
+ attentions=transformer_outputs.attentions,
1341
+ )
special_tokens_map.json ADDED
@@ -0,0 +1,58 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "additional_special_tokens": [
3
+ "<|reg_extra|>",
4
+ "<|endoftext|>",
5
+ "<|fim_prefix|>",
6
+ "<|fim_middle|>",
7
+ "<|fim_suffix|>",
8
+ "<|fim_pad|>",
9
+ "<gh_stars>",
10
+ "<filename>",
11
+ "<issue_start>",
12
+ "<issue_comment>",
13
+ "<issue_closed>",
14
+ "<jupyter_start>",
15
+ "<jupyter_text>",
16
+ "<jupyter_code>",
17
+ "<jupyter_output>",
18
+ "<empty_output>",
19
+ "<commit_before>",
20
+ "<commit_msg>",
21
+ "<commit_after>",
22
+ "<reponame>",
23
+ "<|endofprompt|>",
24
+ "<|im_start|>",
25
+ "<|im_end|>",
26
+ "<|pause|>",
27
+ "<|reg0|>",
28
+ "<|reg1|>",
29
+ "<|reg2|>",
30
+ "<|reg3|>",
31
+ "<|reg4|>",
32
+ "<|reg5|>",
33
+ "<|reg6|>",
34
+ "<|reg7|>",
35
+ "<|extra0|>"
36
+ ],
37
+ "bos_token": {
38
+ "content": "<|endoftext|>",
39
+ "lstrip": false,
40
+ "normalized": false,
41
+ "rstrip": false,
42
+ "single_word": false
43
+ },
44
+ "eos_token": {
45
+ "content": "<|endoftext|>",
46
+ "lstrip": false,
47
+ "normalized": false,
48
+ "rstrip": false,
49
+ "single_word": false
50
+ },
51
+ "unk_token": {
52
+ "content": "<|endoftext|>",
53
+ "lstrip": false,
54
+ "normalized": false,
55
+ "rstrip": false,
56
+ "single_word": false
57
+ }
58
+ }
tokenizer.json ADDED
The diff for this file is too large to render. See raw diff
 
tokenizer_config.json ADDED
@@ -0,0 +1,310 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ {
2
+ "add_prefix_space": false,
3
+ "added_tokens_decoder": {
4
+ "100256": {
5
+ "content": "<|reg_extra|>",
6
+ "lstrip": false,
7
+ "normalized": false,
8
+ "rstrip": false,
9
+ "single_word": false,
10
+ "special": true
11
+ },
12
+ "100257": {
13
+ "content": "<|endoftext|>",
14
+ "lstrip": false,
15
+ "normalized": false,
16
+ "rstrip": false,
17
+ "single_word": false,
18
+ "special": true
19
+ },
20
+ "100258": {
21
+ "content": "<|fim_prefix|>",
22
+ "lstrip": false,
23
+ "normalized": false,
24
+ "rstrip": false,
25
+ "single_word": false,
26
+ "special": true
27
+ },
28
+ "100259": {
29
+ "content": "<|fim_middle|>",
30
+ "lstrip": false,
31
+ "normalized": false,
32
+ "rstrip": false,
33
+ "single_word": false,
34
+ "special": true
35
+ },
36
+ "100260": {
37
+ "content": "<|fim_suffix|>",
38
+ "lstrip": false,
39
+ "normalized": false,
40
+ "rstrip": false,
41
+ "single_word": false,
42
+ "special": true
43
+ },
44
+ "100261": {
45
+ "content": "<|fim_pad|>",
46
+ "lstrip": false,
47
+ "normalized": false,
48
+ "rstrip": false,
49
+ "single_word": false,
50
+ "special": true
51
+ },
52
+ "100262": {
53
+ "content": "<gh_stars>",
54
+ "lstrip": false,
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+ "normalized": false,
56
+ "rstrip": false,
57
+ "single_word": false,
58
+ "special": true
59
+ },
60
+ "100263": {
61
+ "content": "<filename>",
62
+ "lstrip": false,
63
+ "normalized": false,
64
+ "rstrip": false,
65
+ "single_word": false,
66
+ "special": true
67
+ },
68
+ "100264": {
69
+ "content": "<issue_start>",
70
+ "lstrip": false,
71
+ "normalized": false,
72
+ "rstrip": false,
73
+ "single_word": false,
74
+ "special": true
75
+ },
76
+ "100265": {
77
+ "content": "<issue_comment>",
78
+ "lstrip": false,
79
+ "normalized": false,
80
+ "rstrip": false,
81
+ "single_word": false,
82
+ "special": true
83
+ },
84
+ "100266": {
85
+ "content": "<issue_closed>",
86
+ "lstrip": false,
87
+ "normalized": false,
88
+ "rstrip": false,
89
+ "single_word": false,
90
+ "special": true
91
+ },
92
+ "100267": {
93
+ "content": "<jupyter_start>",
94
+ "lstrip": false,
95
+ "normalized": false,
96
+ "rstrip": false,
97
+ "single_word": false,
98
+ "special": true
99
+ },
100
+ "100268": {
101
+ "content": "<jupyter_text>",
102
+ "lstrip": false,
103
+ "normalized": false,
104
+ "rstrip": false,
105
+ "single_word": false,
106
+ "special": true
107
+ },
108
+ "100269": {
109
+ "content": "<jupyter_code>",
110
+ "lstrip": false,
111
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112
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113
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114
+ "special": true
115
+ },
116
+ "100270": {
117
+ "content": "<jupyter_output>",
118
+ "lstrip": false,
119
+ "normalized": false,
120
+ "rstrip": false,
121
+ "single_word": false,
122
+ "special": true
123
+ },
124
+ "100271": {
125
+ "content": "<empty_output>",
126
+ "lstrip": false,
127
+ "normalized": false,
128
+ "rstrip": false,
129
+ "single_word": false,
130
+ "special": true
131
+ },
132
+ "100272": {
133
+ "content": "<commit_before>",
134
+ "lstrip": false,
135
+ "normalized": false,
136
+ "rstrip": false,
137
+ "single_word": false,
138
+ "special": true
139
+ },
140
+ "100273": {
141
+ "content": "<commit_msg>",
142
+ "lstrip": false,
143
+ "normalized": false,
144
+ "rstrip": false,
145
+ "single_word": false,
146
+ "special": true
147
+ },
148
+ "100274": {
149
+ "content": "<commit_after>",
150
+ "lstrip": false,
151
+ "normalized": false,
152
+ "rstrip": false,
153
+ "single_word": false,
154
+ "special": true
155
+ },
156
+ "100275": {
157
+ "content": "<reponame>",
158
+ "lstrip": false,
159
+ "normalized": false,
160
+ "rstrip": false,
161
+ "single_word": false,
162
+ "special": true
163
+ },
164
+ "100276": {
165
+ "content": "<|endofprompt|>",
166
+ "lstrip": false,
167
+ "normalized": false,
168
+ "rstrip": false,
169
+ "single_word": false,
170
+ "special": true
171
+ },
172
+ "100277": {
173
+ "content": "<|im_start|>",
174
+ "lstrip": false,
175
+ "normalized": false,
176
+ "rstrip": false,
177
+ "single_word": false,
178
+ "special": true
179
+ },
180
+ "100278": {
181
+ "content": "<|im_end|>",
182
+ "lstrip": false,
183
+ "normalized": false,
184
+ "rstrip": false,
185
+ "single_word": false,
186
+ "special": true
187
+ },
188
+ "100279": {
189
+ "content": "<|pause|>",
190
+ "lstrip": false,
191
+ "normalized": false,
192
+ "rstrip": false,
193
+ "single_word": false,
194
+ "special": true
195
+ },
196
+ "100280": {
197
+ "content": "<|reg0|>",
198
+ "lstrip": false,
199
+ "normalized": false,
200
+ "rstrip": false,
201
+ "single_word": false,
202
+ "special": true
203
+ },
204
+ "100281": {
205
+ "content": "<|reg1|>",
206
+ "lstrip": false,
207
+ "normalized": false,
208
+ "rstrip": false,
209
+ "single_word": false,
210
+ "special": true
211
+ },
212
+ "100282": {
213
+ "content": "<|reg2|>",
214
+ "lstrip": false,
215
+ "normalized": false,
216
+ "rstrip": false,
217
+ "single_word": false,
218
+ "special": true
219
+ },
220
+ "100283": {
221
+ "content": "<|reg3|>",
222
+ "lstrip": false,
223
+ "normalized": false,
224
+ "rstrip": false,
225
+ "single_word": false,
226
+ "special": true
227
+ },
228
+ "100284": {
229
+ "content": "<|reg4|>",
230
+ "lstrip": false,
231
+ "normalized": false,
232
+ "rstrip": false,
233
+ "single_word": false,
234
+ "special": true
235
+ },
236
+ "100285": {
237
+ "content": "<|reg5|>",
238
+ "lstrip": false,
239
+ "normalized": false,
240
+ "rstrip": false,
241
+ "single_word": false,
242
+ "special": true
243
+ },
244
+ "100286": {
245
+ "content": "<|reg6|>",
246
+ "lstrip": false,
247
+ "normalized": false,
248
+ "rstrip": false,
249
+ "single_word": false,
250
+ "special": true
251
+ },
252
+ "100287": {
253
+ "content": "<|reg7|>",
254
+ "lstrip": false,
255
+ "normalized": false,
256
+ "rstrip": false,
257
+ "single_word": false,
258
+ "special": true
259
+ },
260
+ "100288": {
261
+ "content": "<|extra0|>",
262
+ "lstrip": false,
263
+ "normalized": false,
264
+ "rstrip": false,
265
+ "single_word": false,
266
+ "special": true
267
+ }
268
+ },
269
+ "additional_special_tokens": [
270
+ "<|reg_extra|>",
271
+ "<|endoftext|>",
272
+ "<|fim_prefix|>",
273
+ "<|fim_middle|>",
274
+ "<|fim_suffix|>",
275
+ "<|fim_pad|>",
276
+ "<gh_stars>",
277
+ "<filename>",
278
+ "<issue_start>",
279
+ "<issue_comment>",
280
+ "<issue_closed>",
281
+ "<jupyter_start>",
282
+ "<jupyter_text>",
283
+ "<jupyter_code>",
284
+ "<jupyter_output>",
285
+ "<empty_output>",
286
+ "<commit_before>",
287
+ "<commit_msg>",
288
+ "<commit_after>",
289
+ "<reponame>",
290
+ "<|endofprompt|>",
291
+ "<|im_start|>",
292
+ "<|im_end|>",
293
+ "<|pause|>",
294
+ "<|reg0|>",
295
+ "<|reg1|>",
296
+ "<|reg2|>",
297
+ "<|reg3|>",
298
+ "<|reg4|>",
299
+ "<|reg5|>",
300
+ "<|reg6|>",
301
+ "<|reg7|>",
302
+ "<|extra0|>"
303
+ ],
304
+ "bos_token": "<|endoftext|>",
305
+ "clean_up_tokenization_spaces": true,
306
+ "eos_token": "<|endoftext|>",
307
+ "model_max_length": 1000000000000000019884624838656,
308
+ "tokenizer_class": "GPT2Tokenizer",
309
+ "unk_token": "<|endoftext|>"
310
+ }
vocab.json ADDED
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