AWQ model commit
Browse files- added_tokens.json +5 -0
- config.json +38 -0
- configuration_mistral.py +181 -0
- generation_config.json +6 -0
- model.safetensors +3 -0
- modeling_mistral_yarn.py +1489 -0
- quant_config.json +6 -0
- special_tokens_map.json +10 -0
- tokenizer.json +0 -0
- tokenizer.model +3 -0
- tokenizer_config.json +44 -0
added_tokens.json
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{
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"</s>": 2,
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"<s>": 1,
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"<unk>": 0
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}
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config.json
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{
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"_name_or_path": "/workspace/process/nousresearch_yarn-mistral-7b-128k/source",
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"architectures": [
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"MistralForCausalLM"
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],
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"auto_map": {
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"AutoConfig": "configuration_mistral.MistralConfig",
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"AutoModelForCausalLM": "modeling_mistral_yarn.MistralForCausalLM"
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},
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"bos_token_id": 1,
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"eos_token_id": 2,
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"hidden_act": "silu",
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"hidden_size": 4096,
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"initializer_range": 0.02,
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"intermediate_size": 14336,
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"max_position_embeddings": 32768,
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"max_sequence_length": 131072,
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"model_type": "mistral",
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"num_attention_heads": 32,
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"num_hidden_layers": 32,
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"num_key_value_heads": 8,
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"pad_token_id": 0,
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"pretraining_tp": 1,
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"rms_norm_eps": 1e-05,
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"rope_scaling": {
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"factor": 16.0,
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"finetuned": true,
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"original_max_position_embeddings": 8192,
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"type": "yarn"
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},
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"rope_theta": 10000.0,
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"sliding_window": 131072,
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"tie_word_embeddings": false,
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"torch_dtype": "float16",
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"transformers_version": "4.35.0",
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"use_cache": true,
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"vocab_size": 32000
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}
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configuration_mistral.py
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# coding=utf-8
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# Copyright 2023 Mistral AI and the HuggingFace Inc. team. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" Mistral model configuration"""
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from transformers.configuration_utils import PretrainedConfig
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from transformers.utils import logging
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logger = logging.get_logger(__name__)
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MISTRAL_PRETRAINED_CONFIG_ARCHIVE_MAP = {
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"mistralai/Mistral-7B-v0.1": "https://huggingface.co/mistralai/Mistral-7B-v0.1/resolve/main/config.json",
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"mistralai/Mistral-7B-Instruct-v0.1": "https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.1/resolve/main/config.json",
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}
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class MistralConfig(PretrainedConfig):
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r"""
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This is the configuration class to store the configuration of a [`MistralModel`]. It is used to instantiate an
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Mistral model according to the specified arguments, defining the model architecture. Instantiating a configuration
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with the defaults will yield a similar configuration to that of the Mistral-7B-v0.1 or Mistral-7B-Instruct-v0.1.
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[mistralai/Mistral-7B-v0.1](https://huggingface.co/mistralai/Mistral-7B-v0.1)
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[mistralai/Mistral-7B-Instruct-v0.1](https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.1)
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Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
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documentation from [`PretrainedConfig`] for more information.
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Args:
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vocab_size (`int`, *optional*, defaults to 32000):
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Vocabulary size of the Mistral model. Defines the number of different tokens that can be represented by the
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`inputs_ids` passed when calling [`MistralModel`]
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hidden_size (`int`, *optional*, defaults to 4096):
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Dimension of the hidden representations.
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intermediate_size (`int`, *optional*, defaults to 14336):
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Dimension of the MLP representations.
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num_hidden_layers (`int`, *optional*, defaults to 32):
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Number of hidden layers in the Transformer encoder.
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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 8):
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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 `8`.
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hidden_act (`str` or `function`, *optional*, defaults to `"silu"`):
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The non-linear activation function (function or string) in the decoder.
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max_position_embeddings (`int`, *optional*, defaults to `4096*32`):
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The maximum sequence length that this model might ever be used with. Mistral's sliding window attention
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allows sequence of up to 4096*32 tokens.
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initializer_range (`float`, *optional*, defaults to 0.02):
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The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
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rms_norm_eps (`float`, *optional*, defaults to 1e-06):
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The epsilon used by the rms 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 (not used by all models). Only
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relevant if `config.is_decoder=True`.
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pad_token_id (`int`, *optional*):
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The id of the padding token.
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bos_token_id (`int`, *optional*, defaults to 1):
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The id of the "beginning-of-sequence" token.
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eos_token_id (`int`, *optional*, defaults to 2):
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The id of the "end-of-sequence" token.
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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_scaling (`Dict`, *optional*):
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Dictionary containing the scaling configuration for the RoPE embeddings. Currently supports three scaling
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strategies: linear and dynamic. Their scaling factor must be an float greater than 1. The expected format
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is `{"type": strategy name, "factor": scaling factor}`.
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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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sliding_window (`int`, *optional*, defaults to 4096):
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Sliding window attention window size. If not specified, will default to `4096`.
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```python
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>>> from transformers import MistralModel, MistralConfig
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>>> # Initializing a Mistral 7B style configuration
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>>> configuration = MistralConfig()
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>>> # Initializing a model from the Mistral 7B style configuration
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>>> model = MistralModel(configuration)
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>>> # Accessing the model configuration
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>>> configuration = model.config
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```"""
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model_type = "mistral"
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keys_to_ignore_at_inference = ["past_key_values"]
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def __init__(
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self,
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vocab_size=32000,
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hidden_size=4096,
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intermediate_size=14336,
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num_hidden_layers=32,
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num_attention_heads=32,
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num_key_value_heads=8,
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hidden_act="silu",
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max_position_embeddings=4096 * 32,
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initializer_range=0.02,
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rms_norm_eps=1e-6,
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use_cache=True,
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pad_token_id=None,
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bos_token_id=1,
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eos_token_id=2,
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tie_word_embeddings=False,
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rope_scaling=None,
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rope_theta=10000.0,
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sliding_window=4096,
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**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
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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.sliding_window = sliding_window
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# for backward compatibility
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if num_key_value_heads is None:
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num_key_value_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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self.initializer_range = initializer_range
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self.rms_norm_eps = rms_norm_eps
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self.use_cache = use_cache
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self.rope_scaling = rope_scaling
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self._rope_scaling_validation()
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self.rope_theta = rope_theta
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super().__init__(
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pad_token_id=pad_token_id,
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bos_token_id=bos_token_id,
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eos_token_id=eos_token_id,
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tie_word_embeddings=tie_word_embeddings,
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**kwargs,
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)
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def _rope_scaling_validation(self):
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"""
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Validate the `rope_scaling` configuration.
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"""
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if self.rope_scaling is None:
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return
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if not isinstance(self.rope_scaling, dict):
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raise ValueError(
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"`rope_scaling` must be a dictionary, "
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f"got {self.rope_scaling}"
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)
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rope_scaling_type = self.rope_scaling.get("type", None)
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rope_scaling_factor = self.rope_scaling.get("factor", None)
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if rope_scaling_type is None or rope_scaling_type not in ["linear", "dynamic", "yarn", "dynamic-yarn"]:
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raise ValueError(
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f"`rope_scaling`'s name field must be one of ['linear', 'dynamic', 'yarn', 'dynamic-yarn'], got {rope_scaling_type}"
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)
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if rope_scaling_factor is None or not isinstance(rope_scaling_factor, float) or rope_scaling_factor <= 1.0:
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raise ValueError(f"`rope_scaling`'s factor field must be an float > 1, got {rope_scaling_factor}")
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if rope_scaling_type == "yarn" or rope_scaling_type == "dynamic-yarn":
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original_max_position_embeddings = self.rope_scaling.get("original_max_position_embeddings", None)
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if original_max_position_embeddings is None or not isinstance(original_max_position_embeddings, int):
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raise ValueError(f"`rope_scaling.original_max_position_embeddings` must be set to an int when using yarn, and dynamic-yarn")
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generation_config.json
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{
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"_from_model_config": true,
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"bos_token_id": 1,
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"eos_token_id": 2,
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"transformers_version": "4.35.0.dev0"
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}
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model.safetensors
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version https://git-lfs.github.com/spec/v1
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oid sha256:7c39bf964e64441370ef42628ee20a7a3af6ba39449b8e8068d7f2dfcbd3facc
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size 4150880232
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modeling_mistral_yarn.py
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|
1 |
+
# coding=utf-8
|
2 |
+
# Copyright 2023 Mistral AI 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
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+
# See the License for the specific language governing permissions and
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# limitations under the License.
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""" PyTorch Mistral model."""
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+
import inspect
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+
import math
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+
from typing import List, Optional, Tuple, Union
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+
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+
import torch
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+
import torch.nn.functional as F
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+
import torch.utils.checkpoint
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+
from torch import nn
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from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
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+
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+
from transformers.activations import ACT2FN
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+
from transformers.modeling_outputs import BaseModelOutputWithPast, CausalLMOutputWithPast, SequenceClassifierOutputWithPast
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+
from transformers.modeling_utils import PreTrainedModel
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+
from transformers.utils import (
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add_start_docstrings,
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+
add_start_docstrings_to_model_forward,
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+
is_flash_attn_2_available,
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+
logging,
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+
replace_return_docstrings,
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+
)
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+
from .configuration_mistral import MistralConfig
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+
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+
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+
if is_flash_attn_2_available():
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+
from flash_attn import flash_attn_func, flash_attn_varlen_func
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+
from flash_attn.bert_padding import index_first_axis, pad_input, unpad_input # noqa
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+
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+
_flash_supports_window_size = "window_size" in list(inspect.signature(flash_attn_func).parameters)
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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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+
_CONFIG_FOR_DOC = "MistralConfig"
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+
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+
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+
# Copied from transformers.models.llama.modeling_llama._get_unpad_data
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+
def _get_unpad_data(padding_mask):
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seqlens_in_batch = padding_mask.sum(dim=-1, dtype=torch.int32)
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+
indices = torch.nonzero(padding_mask.flatten(), as_tuple=False).flatten()
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+
max_seqlen_in_batch = seqlens_in_batch.max().item()
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+
cu_seqlens = F.pad(torch.cumsum(seqlens_in_batch, dim=0, dtype=torch.torch.int32), (1, 0))
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+
return (
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indices,
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+
cu_seqlens,
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max_seqlen_in_batch,
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)
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+
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+
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+
# Copied from transformers.models.bart.modeling_bart._make_causal_mask
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+
def _make_causal_mask(
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input_ids_shape: torch.Size, dtype: torch.dtype, device: torch.device, past_key_values_length: int = 0
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+
):
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"""
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Make causal mask used for bi-directional self-attention.
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"""
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bsz, tgt_len = input_ids_shape
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mask = torch.full((tgt_len, tgt_len), torch.finfo(dtype).min, device=device)
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+
mask_cond = torch.arange(mask.size(-1), device=device)
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mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0)
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+
mask = mask.to(dtype)
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+
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if past_key_values_length > 0:
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mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype, device=device), mask], dim=-1)
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+
return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length)
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+
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+
def _make_sliding_window_causal_mask(
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input_ids_shape: torch.Size,
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dtype: torch.dtype,
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device: torch.device,
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past_key_values_length: int = 0,
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sliding_window: int = 4096,
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+
):
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"""
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Make causal mask used for sliding window attention
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"""
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bsz, tgt_len = input_ids_shape
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+
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tensor = torch.full(
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(tgt_len, tgt_len),
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fill_value=1,
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device=device,
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)
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mask = torch.tril(tensor, diagonal=0)
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# make the mask banded to account for sliding window
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mask = torch.triu(mask, diagonal=-sliding_window)
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mask = torch.log(mask).to(dtype)
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+
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if past_key_values_length > 0:
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mask = torch.cat([torch.zeros(tgt_len, past_key_values_length, dtype=dtype, device=device), mask], dim=-1)
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return mask[None, None, :, :].expand(bsz, 1, tgt_len, tgt_len + past_key_values_length)
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+
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+
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# Copied from transformers.models.bart.modeling_bart._expand_mask
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def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None):
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"""
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Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`.
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"""
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bsz, src_len = mask.size()
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tgt_len = tgt_len if tgt_len is not None else src_len
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+
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expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype)
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+
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inverted_mask = 1.0 - expanded_mask
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+
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return inverted_mask.masked_fill(inverted_mask.to(torch.bool), torch.finfo(dtype).min)
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+
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+
# Inverse dim formula to find dim based on number of rotations
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+
def _yarn_find_correction_dim(num_rotations, dim, base=10000, max_position_embeddings=2048):
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+
return (dim * math.log(max_position_embeddings/(num_rotations * 2 * math.pi)))/(2 * math.log(base))
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+
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+
# Find dim range bounds based on rotations
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+
def _yarn_find_correction_range(low_rot, high_rot, dim, base=10000, max_position_embeddings=2048):
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+
low = math.floor(_yarn_find_correction_dim(
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+
low_rot, dim, base, max_position_embeddings))
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+
high = math.ceil(_yarn_find_correction_dim(
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high_rot, dim, base, max_position_embeddings))
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+
return max(low, 0), min(high, dim-1) # Clamp values just in case
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+
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+
def _yarn_linear_ramp_mask(min, max, dim):
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if min == max:
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max += 0.001 # Prevent singularity
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+
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+
linear_func = (torch.arange(dim, dtype=torch.float32) - min) / (max - min)
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+
ramp_func = torch.clamp(linear_func, 0, 1)
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+
return ramp_func
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+
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+
def _yarn_get_mscale(scale=1):
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+
if scale <= 1:
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+
return 1.0
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+
return 0.07 * math.log(scale) + 1.0
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+
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+
# Copied from transformers.models.llama.modeling_llama.LlamaRMSNorm with Llama->Mistral
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+
class MistralRMSNorm(nn.Module):
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+
def __init__(self, hidden_size, eps=1e-6):
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+
"""
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+
MistralRMSNorm is equivalent to T5LayerNorm
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+
"""
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+
super().__init__()
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+
self.weight = nn.Parameter(torch.ones(hidden_size))
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+
self.variance_epsilon = eps
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+
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+
def forward(self, hidden_states):
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+
input_dtype = hidden_states.dtype
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+
hidden_states = hidden_states.to(torch.float32)
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+
variance = hidden_states.pow(2).mean(-1, keepdim=True)
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+
hidden_states = hidden_states * torch.rsqrt(variance + self.variance_epsilon)
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+
return self.weight * hidden_states.to(input_dtype)
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+
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+
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+
# Copied from transformers.models.llama.modeling_llama.LlamaRotaryEmbedding with Llama->Mistral
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+
class MistralRotaryEmbedding(nn.Module):
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+
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None):
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+
super().__init__()
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+
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+
self.dim = dim
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+
self.max_position_embeddings = max_position_embeddings
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+
self.base = base
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+
inv_freq = 1.0 / (self.base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim))
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+
self.register_buffer("inv_freq", inv_freq, persistent=False)
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+
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+
# Build here to make `torch.jit.trace` work.
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+
self._set_cos_sin_cache(
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+
seq_len=max_position_embeddings, device=self.inv_freq.device, dtype=torch.get_default_dtype()
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+
)
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+
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+
def _set_cos_sin_cache(self, seq_len, device, dtype):
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+
self.max_seq_len_cached = seq_len
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+
t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
|
189 |
+
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+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
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+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
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+
emb = torch.cat((freqs, freqs), dim=-1)
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+
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
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+
self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
|
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+
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+
def forward(self, x, seq_len=None):
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+
# x: [bs, num_attention_heads, seq_len, head_size]
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+
if seq_len > self.max_seq_len_cached:
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+
self._set_cos_sin_cache(seq_len=seq_len, device=x.device, dtype=x.dtype)
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200 |
+
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+
return (
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+
self.cos_cached[:seq_len].to(dtype=x.dtype),
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+
self.sin_cached[:seq_len].to(dtype=x.dtype),
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+
)
|
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+
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+
class MistralLinearScalingRotaryEmbedding(MistralRotaryEmbedding):
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+
"""MistralRotaryEmbedding extended with linear scaling. Credits to the Reddit user /u/kaiokendev"""
|
208 |
+
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+
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
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+
self.scaling_factor = scaling_factor
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+
super().__init__(dim, max_position_embeddings, base, device)
|
212 |
+
|
213 |
+
def _set_cos_sin_cache(self, seq_len, device, dtype):
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214 |
+
self.max_seq_len_cached = seq_len
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+
t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
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216 |
+
t = t / self.scaling_factor
|
217 |
+
|
218 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
219 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
220 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
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+
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
|
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+
self.register_buffer("sin_cached", emb.cos().to(dtype), persistent=False)
|
223 |
+
|
224 |
+
|
225 |
+
class MistralDynamicNTKScalingRotaryEmbedding(MistralRotaryEmbedding):
|
226 |
+
"""MistralRotaryEmbedding extended with Dynamic NTK scaling. Credits to the Reddit users /u/bloc97 and /u/emozilla"""
|
227 |
+
|
228 |
+
def __init__(self, dim, max_position_embeddings=2048, base=10000, device=None, scaling_factor=1.0):
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229 |
+
self.scaling_factor = scaling_factor
|
230 |
+
super().__init__(dim, max_position_embeddings, base, device)
|
231 |
+
|
232 |
+
def _set_cos_sin_cache(self, seq_len, device, dtype):
|
233 |
+
self.max_seq_len_cached = seq_len
|
234 |
+
|
235 |
+
if seq_len > self.max_position_embeddings:
|
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+
base = self.base * (
|
237 |
+
(self.scaling_factor * seq_len / self.max_position_embeddings) - (self.scaling_factor - 1)
|
238 |
+
) ** (self.dim / (self.dim - 2))
|
239 |
+
inv_freq = 1.0 / (base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim))
|
240 |
+
self.register_buffer("inv_freq", inv_freq, persistent=False)
|
241 |
+
|
242 |
+
t = torch.arange(self.max_seq_len_cached, device=device, dtype=self.inv_freq.dtype)
|
243 |
+
|
244 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
245 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
246 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
247 |
+
self.register_buffer("cos_cached", emb.cos().to(dtype), persistent=False)
|
248 |
+
self.register_buffer("sin_cached", emb.sin().to(dtype), persistent=False)
|
249 |
+
|
250 |
+
|
251 |
+
class MistralYaRNScaledRotaryEmbedding(torch.nn.Module):
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252 |
+
"""MistralRotaryEmbedding extended with YaRN. See: https://arxiv.org/abs/2309.00071"""
|
253 |
+
def __init__(self, dim, max_position_embeddings=2048, base=10000, scale=1, original_max_position_embeddings=2048,
|
254 |
+
extrapolation_factor=1, attn_factor=1, beta_fast=128, beta_slow=2, finetuned=False, device=None):
|
255 |
+
super().__init__()
|
256 |
+
|
257 |
+
self.dim = dim
|
258 |
+
self.max_position_embeddings = max_position_embeddings
|
259 |
+
self.base = base
|
260 |
+
self.scale = scale
|
261 |
+
self.original_max_position_embeddings = original_max_position_embeddings
|
262 |
+
self.extrapolation_factor = extrapolation_factor
|
263 |
+
self.attn_factor = attn_factor
|
264 |
+
self.beta_fast = beta_fast
|
265 |
+
self.beta_slow = beta_slow
|
266 |
+
|
267 |
+
self.yarn(device)
|
268 |
+
|
269 |
+
# Build here to make `torch.jit.trace` work.
|
270 |
+
self.max_seq_len_cached = max_position_embeddings
|
271 |
+
t = torch.arange(self.max_seq_len_cached, device=self.inv_freq.device, dtype=self.inv_freq.dtype)
|
272 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
273 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
274 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
275 |
+
dtype = torch.get_default_dtype()
|
276 |
+
|
277 |
+
self.register_buffer("cos_cached", (emb.cos() * self.mscale).to(dtype), persistent=False)
|
278 |
+
self.register_buffer("sin_cached", (emb.sin() * self.mscale).to(dtype), persistent=False)
|
279 |
+
|
280 |
+
def forward(self, x, seq_len=None):
|
281 |
+
# x: [bs, num_attention_heads, seq_len, head_size]
|
282 |
+
# This `if` block is unlikely to be run after we build sin/cos in `__init__`. Keep the logic here just in case.
|
283 |
+
if seq_len > self.max_seq_len_cached:
|
284 |
+
self.max_seq_len_cached = seq_len
|
285 |
+
|
286 |
+
t = torch.arange(self.max_seq_len_cached, device=x.device, dtype=self.inv_freq.dtype)
|
287 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
288 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
289 |
+
emb = torch.cat((freqs, freqs), dim=-1).to(x.device)
|
290 |
+
|
291 |
+
self.register_buffer("cos_cached", (emb.cos() * self.mscale).to(x.dtype), persistent=False)
|
292 |
+
self.register_buffer("sin_cached", (emb.sin() * self.mscale).to(x.dtype), persistent=False)
|
293 |
+
return (
|
294 |
+
self.cos_cached[:seq_len].to(dtype=x.dtype),
|
295 |
+
self.sin_cached[:seq_len].to(dtype=x.dtype),
|
296 |
+
)
|
297 |
+
|
298 |
+
def yarn(self, device):
|
299 |
+
pos_freqs = self.base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim)
|
300 |
+
inv_freq_extrapolation = 1.0 / pos_freqs
|
301 |
+
inv_freq_interpolation = 1.0 / (self.scale * pos_freqs)
|
302 |
+
|
303 |
+
low, high = _yarn_find_correction_range(self.beta_fast, self.beta_slow, self.dim, self.base, self.original_max_position_embeddings)
|
304 |
+
inv_freq_mask = (1 - _yarn_linear_ramp_mask(low, high, self.dim // 2).float().to(device)) * self.extrapolation_factor # Get n-d rotational scaling corrected for extrapolation
|
305 |
+
inv_freq = inv_freq_interpolation * (1 - inv_freq_mask) + inv_freq_extrapolation * inv_freq_mask
|
306 |
+
|
307 |
+
self.register_buffer("inv_freq", inv_freq, persistent=False)
|
308 |
+
self.mscale = float(_yarn_get_mscale(self.scale) * self.attn_factor) # Get n-d magnitude scaling corrected for interpolation
|
309 |
+
|
310 |
+
|
311 |
+
class MistralDynamicYaRNScaledRotaryEmbedding(torch.nn.Module):
|
312 |
+
"""MistralRotaryEmbedding extended with Dynamic YaRN. See: https://arxiv.org/abs/2309.00071"""
|
313 |
+
def __init__(self, dim, max_position_embeddings=2048, base=10000, original_max_position_embeddings=2048,
|
314 |
+
extrapolation_factor=1, attn_factor=1, beta_fast=128, beta_slow=2, finetuned=False, device=None):
|
315 |
+
super().__init__()
|
316 |
+
|
317 |
+
self.dim = dim
|
318 |
+
self.max_position_embeddings = max_position_embeddings
|
319 |
+
self.base = base
|
320 |
+
self.original_max_position_embeddings = original_max_position_embeddings
|
321 |
+
self.extrapolation_factor = extrapolation_factor
|
322 |
+
self.attn_factor = attn_factor
|
323 |
+
self.beta_fast = beta_fast
|
324 |
+
self.beta_slow = beta_slow
|
325 |
+
|
326 |
+
if finetuned:
|
327 |
+
self.yarn(self.max_position_embeddings / self.original_max_position_embeddings, device)
|
328 |
+
else:
|
329 |
+
inv_freq = 1.0 / \
|
330 |
+
(base ** (torch.arange(0, dim, 2).float().to(device) / dim))
|
331 |
+
self.register_buffer("inv_freq", inv_freq, persistent=False)
|
332 |
+
self.mscale = 1
|
333 |
+
|
334 |
+
# Build here to make `torch.jit.trace` work.
|
335 |
+
self.max_seq_len_cached = max_position_embeddings
|
336 |
+
t = torch.arange(self.max_seq_len_cached, device=self.inv_freq.device, dtype=torch.float32)
|
337 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
338 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
339 |
+
emb = torch.cat((freqs, freqs), dim=-1)
|
340 |
+
dtype = torch.get_default_dtype()
|
341 |
+
|
342 |
+
self.register_buffer("cos_cached", (emb.cos() * self.mscale).to(dtype), persistent=False)
|
343 |
+
self.register_buffer("sin_cached", (emb.sin() * self.mscale).to(dtype), persistent=False)
|
344 |
+
|
345 |
+
def forward(self, x, seq_len=None):
|
346 |
+
# x: [bs, num_attention_heads, seq_len, head_size]
|
347 |
+
# This `if` block is unlikely to be run after we build sin/cos in `__init__`. Keep the logic here just in case.
|
348 |
+
if seq_len > self.max_seq_len_cached:
|
349 |
+
self.max_seq_len_cached = seq_len
|
350 |
+
|
351 |
+
self.yarn(seq_len / self.max_position_embeddings, x.device)
|
352 |
+
|
353 |
+
t = torch.arange(self.max_seq_len_cached, device=x.device, dtype=self.inv_freq.dtype)
|
354 |
+
freqs = torch.einsum("i,j->ij", t, self.inv_freq)
|
355 |
+
# Different from paper, but it uses a different permutation in order to obtain the same calculation
|
356 |
+
emb = torch.cat((freqs, freqs), dim=-1).to(x.device)
|
357 |
+
|
358 |
+
self.register_buffer("cos_cached", (emb.cos() * self.mscale).to(x.dtype), persistent=False)
|
359 |
+
self.register_buffer("sin_cached", (emb.sin() * self.mscale).to(x.dtype), persistent=False)
|
360 |
+
return (
|
361 |
+
self.cos_cached[:seq_len].to(dtype=x.dtype),
|
362 |
+
self.sin_cached[:seq_len].to(dtype=x.dtype),
|
363 |
+
)
|
364 |
+
|
365 |
+
def yarn(self, scale, device):
|
366 |
+
pos_freqs = self.base ** (torch.arange(0, self.dim, 2).float().to(device) / self.dim)
|
367 |
+
inv_freq_extrapolation = 1.0 / pos_freqs
|
368 |
+
inv_freq_interpolation = 1.0 / (scale * pos_freqs)
|
369 |
+
|
370 |
+
low, high = _yarn_find_correction_range(self.beta_fast, self.beta_slow, self.dim, self.base, self.original_max_position_embeddings)
|
371 |
+
inv_freq_mask = (1 - _yarn_linear_ramp_mask(low, high, self.dim // 2).float().to(device)) * self.extrapolation_factor # Get n-d rotational scaling corrected for extrapolation
|
372 |
+
inv_freq = inv_freq_interpolation * (1 - inv_freq_mask) + inv_freq_extrapolation * inv_freq_mask
|
373 |
+
|
374 |
+
self.register_buffer("inv_freq", inv_freq, persistent=False)
|
375 |
+
self.mscale = float(_yarn_get_mscale(scale) * self.attn_factor) # Get n-d magnitude scaling corrected for interpolation
|
376 |
+
|
377 |
+
# Copied from transformers.models.llama.modeling_llama.rotate_half
|
378 |
+
def rotate_half(x):
|
379 |
+
"""Rotates half the hidden dims of the input."""
|
380 |
+
x1 = x[..., : x.shape[-1] // 2]
|
381 |
+
x2 = x[..., x.shape[-1] // 2 :]
|
382 |
+
return torch.cat((-x2, x1), dim=-1)
|
383 |
+
|
384 |
+
|
385 |
+
# Copied from transformers.models.llama.modeling_llama.apply_rotary_pos_emb
|
386 |
+
def apply_rotary_pos_emb(q, k, cos, sin, position_ids):
|
387 |
+
cos = cos[position_ids].unsqueeze(1) # [seq_len, dim] -> [batch_size, 1, seq_len, head_dim]
|
388 |
+
sin = sin[position_ids].unsqueeze(1)
|
389 |
+
q_embed = (q * cos) + (rotate_half(q) * sin)
|
390 |
+
k_embed = (k * cos) + (rotate_half(k) * sin)
|
391 |
+
return q_embed, k_embed
|
392 |
+
|
393 |
+
|
394 |
+
class MistralMLP(nn.Module):
|
395 |
+
def __init__(self, config):
|
396 |
+
super().__init__()
|
397 |
+
self.config = config
|
398 |
+
self.hidden_size = config.hidden_size
|
399 |
+
self.intermediate_size = config.intermediate_size
|
400 |
+
self.gate_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
|
401 |
+
self.up_proj = nn.Linear(self.hidden_size, self.intermediate_size, bias=False)
|
402 |
+
self.down_proj = nn.Linear(self.intermediate_size, self.hidden_size, bias=False)
|
403 |
+
self.act_fn = ACT2FN[config.hidden_act]
|
404 |
+
|
405 |
+
def forward(self, x):
|
406 |
+
return self.down_proj(self.act_fn(self.gate_proj(x)) * self.up_proj(x))
|
407 |
+
|
408 |
+
|
409 |
+
def repeat_kv(hidden_states: torch.Tensor, n_rep: int) -> torch.Tensor:
|
410 |
+
"""
|
411 |
+
This is the equivalent of torch.repeat_interleave(x, dim=1, repeats=n_rep). The hidden states go from (batch,
|
412 |
+
num_key_value_heads, seqlen, head_dim) to (batch, num_attention_heads, seqlen, head_dim)
|
413 |
+
"""
|
414 |
+
batch, num_key_value_heads, slen, head_dim = hidden_states.shape
|
415 |
+
if n_rep == 1:
|
416 |
+
return hidden_states
|
417 |
+
hidden_states = hidden_states[:, :, None, :, :].expand(batch, num_key_value_heads, n_rep, slen, head_dim)
|
418 |
+
return hidden_states.reshape(batch, num_key_value_heads * n_rep, slen, head_dim)
|
419 |
+
|
420 |
+
|
421 |
+
class MistralAttention(nn.Module):
|
422 |
+
"""
|
423 |
+
Multi-headed attention from 'Attention Is All You Need' paper. Modified to use sliding window attention: Longformer
|
424 |
+
and "Generating Long Sequences with Sparse Transformers".
|
425 |
+
"""
|
426 |
+
|
427 |
+
def __init__(self, config: MistralConfig):
|
428 |
+
super().__init__()
|
429 |
+
self.config = config
|
430 |
+
self.hidden_size = config.hidden_size
|
431 |
+
self.num_heads = config.num_attention_heads
|
432 |
+
self.head_dim = self.hidden_size // self.num_heads
|
433 |
+
self.num_key_value_heads = config.num_key_value_heads
|
434 |
+
self.num_key_value_groups = self.num_heads // self.num_key_value_heads
|
435 |
+
self.max_position_embeddings = config.max_position_embeddings
|
436 |
+
self.rope_theta = config.rope_theta
|
437 |
+
|
438 |
+
if (self.head_dim * self.num_heads) != self.hidden_size:
|
439 |
+
raise ValueError(
|
440 |
+
f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
|
441 |
+
f" and `num_heads`: {self.num_heads})."
|
442 |
+
)
|
443 |
+
self.q_proj = nn.Linear(self.hidden_size, self.num_heads * self.head_dim, bias=False)
|
444 |
+
self.k_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=False)
|
445 |
+
self.v_proj = nn.Linear(self.hidden_size, self.num_key_value_heads * self.head_dim, bias=False)
|
446 |
+
self.o_proj = nn.Linear(self.num_heads * self.head_dim, self.hidden_size, bias=False)
|
447 |
+
|
448 |
+
self._init_rope()
|
449 |
+
|
450 |
+
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
|
451 |
+
return tensor.view(bsz, seq_len, self.num_heads, self.head_dim).transpose(1, 2).contiguous()
|
452 |
+
|
453 |
+
def _init_rope(self):
|
454 |
+
if self.config.rope_scaling is None:
|
455 |
+
self.rotary_emb = MistralRotaryEmbedding(self.head_dim, max_position_embeddings=self.max_position_embeddings, base=self.rope_theta)
|
456 |
+
else:
|
457 |
+
scaling_type = self.config.rope_scaling["type"]
|
458 |
+
scaling_factor = self.config.rope_scaling["factor"]
|
459 |
+
if scaling_type == "linear":
|
460 |
+
self.rotary_emb = MistralLinearScalingRotaryEmbedding(
|
461 |
+
self.head_dim, max_position_embeddings=self.max_position_embeddings,
|
462 |
+
scaling_factor=scaling_factor, base=self.rope_theta,
|
463 |
+
)
|
464 |
+
elif scaling_type == "dynamic":
|
465 |
+
self.rotary_emb = MistralDynamicNTKScalingRotaryEmbedding(
|
466 |
+
self.head_dim, max_position_embeddings=self.max_position_embeddings, scaling_factor=scaling_factor,
|
467 |
+
base=self.rope_theta,
|
468 |
+
)
|
469 |
+
elif scaling_type == "yarn":
|
470 |
+
original_max_position_embeddings = self.config.rope_scaling["original_max_position_embeddings"]
|
471 |
+
self.rotary_emb = MistralYaRNScaledRotaryEmbedding(
|
472 |
+
self.head_dim, max_position_embeddings=self.max_position_embeddings, scale=scaling_factor,
|
473 |
+
original_max_position_embeddings=original_max_position_embeddings, base=self.rope_theta,
|
474 |
+
)
|
475 |
+
elif scaling_type == "dynamic-yarn":
|
476 |
+
original_max_position_embeddings = self.config.rope_scaling["original_max_position_embeddings"]
|
477 |
+
self.rotary_emb = MistralDynamicYaRNScaledRotaryEmbedding(
|
478 |
+
self.head_dim, max_position_embeddings=self.max_position_embeddings,
|
479 |
+
original_max_position_embeddings=original_max_position_embeddings, base=self.rope_theta,
|
480 |
+
)
|
481 |
+
else:
|
482 |
+
raise ValueError(f"Unknown RoPE scaling type {scaling_type}")
|
483 |
+
|
484 |
+
def forward(
|
485 |
+
self,
|
486 |
+
hidden_states: torch.Tensor,
|
487 |
+
attention_mask: Optional[torch.Tensor] = None,
|
488 |
+
position_ids: Optional[torch.LongTensor] = None,
|
489 |
+
past_key_value: Optional[Tuple[torch.Tensor]] = None,
|
490 |
+
output_attentions: bool = False,
|
491 |
+
use_cache: bool = False,
|
492 |
+
padding_mask: Optional[torch.Tensor] = None,
|
493 |
+
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
|
494 |
+
bsz, q_len, _ = hidden_states.size()
|
495 |
+
|
496 |
+
query_states = self.q_proj(hidden_states)
|
497 |
+
key_states = self.k_proj(hidden_states)
|
498 |
+
value_states = self.v_proj(hidden_states)
|
499 |
+
|
500 |
+
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
|
501 |
+
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
502 |
+
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
503 |
+
|
504 |
+
kv_seq_len = key_states.shape[-2]
|
505 |
+
if past_key_value is not None:
|
506 |
+
kv_seq_len += past_key_value[0].shape[-2]
|
507 |
+
cos, sin = self.rotary_emb(value_states, seq_len=kv_seq_len)
|
508 |
+
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
|
509 |
+
|
510 |
+
if past_key_value is not None:
|
511 |
+
# reuse k, v, self_attention
|
512 |
+
key_states = torch.cat([past_key_value[0], key_states], dim=2)
|
513 |
+
value_states = torch.cat([past_key_value[1], value_states], dim=2)
|
514 |
+
|
515 |
+
past_key_value = (key_states, value_states) if use_cache else None
|
516 |
+
|
517 |
+
# repeat k/v heads if n_kv_heads < n_heads
|
518 |
+
key_states = repeat_kv(key_states, self.num_key_value_groups)
|
519 |
+
value_states = repeat_kv(value_states, self.num_key_value_groups)
|
520 |
+
|
521 |
+
attn_weights = torch.matmul(query_states, key_states.transpose(2, 3)) / math.sqrt(self.head_dim)
|
522 |
+
|
523 |
+
if attn_weights.size() != (bsz, self.num_heads, q_len, kv_seq_len):
|
524 |
+
raise ValueError(
|
525 |
+
f"Attention weights should be of size {(bsz, self.num_heads, q_len, kv_seq_len)}, but is"
|
526 |
+
f" {attn_weights.size()}"
|
527 |
+
)
|
528 |
+
|
529 |
+
if attention_mask is not None:
|
530 |
+
if attention_mask.size() != (bsz, 1, q_len, kv_seq_len):
|
531 |
+
raise ValueError(
|
532 |
+
f"Attention mask should be of size {(bsz, 1, q_len, kv_seq_len)}, but is {attention_mask.size()}"
|
533 |
+
)
|
534 |
+
|
535 |
+
attn_weights = attn_weights + attention_mask
|
536 |
+
|
537 |
+
# upcast attention to fp32
|
538 |
+
attn_weights = nn.functional.softmax(attn_weights, dim=-1, dtype=torch.float32).to(query_states.dtype)
|
539 |
+
attn_output = torch.matmul(attn_weights, value_states)
|
540 |
+
|
541 |
+
if attn_output.size() != (bsz, self.num_heads, q_len, self.head_dim):
|
542 |
+
raise ValueError(
|
543 |
+
f"`attn_output` should be of size {(bsz, self.num_heads, q_len, self.head_dim)}, but is"
|
544 |
+
f" {attn_output.size()}"
|
545 |
+
)
|
546 |
+
|
547 |
+
attn_output = attn_output.transpose(1, 2).contiguous()
|
548 |
+
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
|
549 |
+
|
550 |
+
attn_output = self.o_proj(attn_output)
|
551 |
+
|
552 |
+
if not output_attentions:
|
553 |
+
attn_weights = None
|
554 |
+
|
555 |
+
return attn_output, attn_weights, past_key_value
|
556 |
+
|
557 |
+
|
558 |
+
class MistralFlashAttention2(MistralAttention):
|
559 |
+
"""
|
560 |
+
Mistral flash attention module. This module inherits from `MistralAttention` as the weights of the module stays
|
561 |
+
untouched. The only required change would be on the forward pass where it needs to correctly call the public API of
|
562 |
+
flash attention and deal with padding tokens in case the input contains any of them.
|
563 |
+
"""
|
564 |
+
|
565 |
+
def forward(
|
566 |
+
self,
|
567 |
+
hidden_states: torch.Tensor,
|
568 |
+
attention_mask: Optional[torch.Tensor] = None,
|
569 |
+
position_ids: Optional[torch.LongTensor] = None,
|
570 |
+
past_key_value: Optional[Tuple[torch.Tensor]] = None,
|
571 |
+
output_attentions: bool = False,
|
572 |
+
use_cache: bool = False,
|
573 |
+
padding_mask: Optional[torch.LongTensor] = None,
|
574 |
+
):
|
575 |
+
bsz, q_len, _ = hidden_states.size()
|
576 |
+
|
577 |
+
query_states = self.q_proj(hidden_states)
|
578 |
+
key_states = self.k_proj(hidden_states)
|
579 |
+
value_states = self.v_proj(hidden_states)
|
580 |
+
|
581 |
+
query_states = query_states.view(bsz, q_len, self.num_heads, self.head_dim).transpose(1, 2)
|
582 |
+
key_states = key_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
583 |
+
value_states = value_states.view(bsz, q_len, self.num_key_value_heads, self.head_dim).transpose(1, 2)
|
584 |
+
|
585 |
+
kv_seq_len = key_states.shape[-2]
|
586 |
+
if past_key_value is not None:
|
587 |
+
kv_seq_len += past_key_value[0].shape[-2]
|
588 |
+
|
589 |
+
# Because the input can be padded, the absolute sequence length depends on the max position id.
|
590 |
+
rotary_seq_len = max(kv_seq_len, position_ids[:, -1].max().item()) + 1
|
591 |
+
cos, sin = self.rotary_emb(value_states, seq_len=rotary_seq_len)
|
592 |
+
|
593 |
+
query_states, key_states = apply_rotary_pos_emb(query_states, key_states, cos, sin, position_ids)
|
594 |
+
|
595 |
+
use_sliding_windows = (
|
596 |
+
_flash_supports_window_size
|
597 |
+
and hasattr(self.config, "sliding_window")
|
598 |
+
and kv_seq_len > self.config.sliding_window
|
599 |
+
)
|
600 |
+
|
601 |
+
if not _flash_supports_window_size:
|
602 |
+
logger.warning_once(
|
603 |
+
"The current flash attention version does not support sliding window attention, for a more memory efficient implementation"
|
604 |
+
" make sure to upgrade flash-attn library."
|
605 |
+
)
|
606 |
+
|
607 |
+
if past_key_value is not None:
|
608 |
+
# Activate slicing cache only if the config has a value `sliding_windows` attribute
|
609 |
+
if hasattr(self.config, "sliding_window") and kv_seq_len > self.config.sliding_window:
|
610 |
+
slicing_tokens = kv_seq_len - self.config.sliding_window
|
611 |
+
|
612 |
+
past_key = past_key_value[0]
|
613 |
+
past_value = past_key_value[1]
|
614 |
+
|
615 |
+
past_key = past_key[:, :, slicing_tokens:, :].contiguous()
|
616 |
+
past_value = past_value[:, :, slicing_tokens:, :].contiguous()
|
617 |
+
|
618 |
+
if past_key.shape[-2] != self.config.sliding_window - 1:
|
619 |
+
raise ValueError(
|
620 |
+
f"past key much have a shape of (`batch_size, num_heads, self.config.sliding_window-1, head_dim`), got"
|
621 |
+
f" {past_key.shape}"
|
622 |
+
)
|
623 |
+
|
624 |
+
past_key_value = (past_key, past_value)
|
625 |
+
|
626 |
+
if padding_mask is not None:
|
627 |
+
padding_mask = padding_mask[:, slicing_tokens:]
|
628 |
+
padding_mask = torch.cat([padding_mask, torch.ones_like(padding_mask[:, -1:])], dim=-1)
|
629 |
+
|
630 |
+
key_states = torch.cat([past_key_value[0], key_states], dim=2)
|
631 |
+
value_states = torch.cat([past_key_value[1], value_states], dim=2)
|
632 |
+
|
633 |
+
past_key_value = (key_states, value_states) if use_cache else None
|
634 |
+
|
635 |
+
# repeat k/v heads if n_kv_heads < n_heads
|
636 |
+
key_states = repeat_kv(key_states, self.num_key_value_groups)
|
637 |
+
value_states = repeat_kv(value_states, self.num_key_value_groups)
|
638 |
+
|
639 |
+
# TODO: Mistral does not have dropout in the config??
|
640 |
+
# It is recommended to use dropout with FA according to the docs
|
641 |
+
# when training.
|
642 |
+
dropout_rate = 0.0 # if not self.training else self.attn_dropout
|
643 |
+
|
644 |
+
# In PEFT, usually we cast the layer norms in float32 for training stability reasons
|
645 |
+
# therefore the input hidden states gets silently casted in float32. Hence, we need
|
646 |
+
# cast them back in float16 just to be sure everything works as expected.
|
647 |
+
input_dtype = query_states.dtype
|
648 |
+
if input_dtype == torch.float32:
|
649 |
+
logger.warning_once(
|
650 |
+
"The input hidden states seems to be silently casted in float32, this might be related to"
|
651 |
+
" the fact you have upcasted embedding or layer norm layers in float32. We will cast back the input in"
|
652 |
+
" float16."
|
653 |
+
)
|
654 |
+
|
655 |
+
query_states = query_states.to(torch.float16)
|
656 |
+
key_states = key_states.to(torch.float16)
|
657 |
+
value_states = value_states.to(torch.float16)
|
658 |
+
|
659 |
+
# Reashape to the expected shape for Flash Attention
|
660 |
+
query_states = query_states.transpose(1, 2)
|
661 |
+
key_states = key_states.transpose(1, 2)
|
662 |
+
value_states = value_states.transpose(1, 2)
|
663 |
+
|
664 |
+
attn_output = self._flash_attention_forward(
|
665 |
+
query_states,
|
666 |
+
key_states,
|
667 |
+
value_states,
|
668 |
+
padding_mask,
|
669 |
+
q_len,
|
670 |
+
dropout=dropout_rate,
|
671 |
+
use_sliding_windows=use_sliding_windows,
|
672 |
+
)
|
673 |
+
|
674 |
+
attn_output = attn_output.reshape(bsz, q_len, self.hidden_size).contiguous()
|
675 |
+
attn_output = self.o_proj(attn_output)
|
676 |
+
|
677 |
+
if not output_attentions:
|
678 |
+
attn_weights = None
|
679 |
+
|
680 |
+
return attn_output, attn_weights, past_key_value
|
681 |
+
|
682 |
+
def _flash_attention_forward(
|
683 |
+
self,
|
684 |
+
query_states,
|
685 |
+
key_states,
|
686 |
+
value_states,
|
687 |
+
padding_mask,
|
688 |
+
query_length,
|
689 |
+
dropout=0.0,
|
690 |
+
softmax_scale=None,
|
691 |
+
use_sliding_windows=False,
|
692 |
+
):
|
693 |
+
"""
|
694 |
+
Calls the forward method of Flash Attention - if the input hidden states contain at least one padding token
|
695 |
+
first unpad the input, then computes the attention scores and pad the final attention scores.
|
696 |
+
|
697 |
+
Args:
|
698 |
+
query_states (`torch.Tensor`):
|
699 |
+
Input query states to be passed to Flash Attention API
|
700 |
+
key_states (`torch.Tensor`):
|
701 |
+
Input key states to be passed to Flash Attention API
|
702 |
+
value_states (`torch.Tensor`):
|
703 |
+
Input value states to be passed to Flash Attention API
|
704 |
+
padding_mask (`torch.Tensor`):
|
705 |
+
The padding mask - corresponds to a tensor of size `(batch_size, seq_len)` where 0 stands for the
|
706 |
+
position of padding tokens and 1 for the position of non-padding tokens.
|
707 |
+
dropout (`int`, *optional*):
|
708 |
+
Attention dropout
|
709 |
+
softmax_scale (`float`, *optional*):
|
710 |
+
The scaling of QK^T before applying softmax. Default to 1 / sqrt(head_dim)
|
711 |
+
use_sliding_windows (`bool`, *optional*):
|
712 |
+
Whether to activate sliding window attention.
|
713 |
+
"""
|
714 |
+
# Contains at least one padding token in the sequence
|
715 |
+
if padding_mask is not None:
|
716 |
+
batch_size = query_states.shape[0]
|
717 |
+
query_states, key_states, value_states, indices_q, cu_seq_lens, max_seq_lens = self._upad_input(
|
718 |
+
query_states, key_states, value_states, padding_mask, query_length
|
719 |
+
)
|
720 |
+
|
721 |
+
cu_seqlens_q, cu_seqlens_k = cu_seq_lens
|
722 |
+
max_seqlen_in_batch_q, max_seqlen_in_batch_k = max_seq_lens
|
723 |
+
|
724 |
+
if not use_sliding_windows:
|
725 |
+
attn_output_unpad = flash_attn_varlen_func(
|
726 |
+
query_states,
|
727 |
+
key_states,
|
728 |
+
value_states,
|
729 |
+
cu_seqlens_q=cu_seqlens_q,
|
730 |
+
cu_seqlens_k=cu_seqlens_k,
|
731 |
+
max_seqlen_q=max_seqlen_in_batch_q,
|
732 |
+
max_seqlen_k=max_seqlen_in_batch_k,
|
733 |
+
dropout_p=dropout,
|
734 |
+
softmax_scale=softmax_scale,
|
735 |
+
causal=True,
|
736 |
+
)
|
737 |
+
else:
|
738 |
+
attn_output_unpad = flash_attn_varlen_func(
|
739 |
+
query_states,
|
740 |
+
key_states,
|
741 |
+
value_states,
|
742 |
+
cu_seqlens_q=cu_seqlens_q,
|
743 |
+
cu_seqlens_k=cu_seqlens_k,
|
744 |
+
max_seqlen_q=max_seqlen_in_batch_q,
|
745 |
+
max_seqlen_k=max_seqlen_in_batch_k,
|
746 |
+
dropout_p=dropout,
|
747 |
+
softmax_scale=softmax_scale,
|
748 |
+
causal=True,
|
749 |
+
window_size=(self.config.sliding_window, self.config.sliding_window),
|
750 |
+
)
|
751 |
+
|
752 |
+
attn_output = pad_input(attn_output_unpad, indices_q, batch_size, query_length)
|
753 |
+
else:
|
754 |
+
if not use_sliding_windows:
|
755 |
+
attn_output = flash_attn_func(
|
756 |
+
query_states, key_states, value_states, dropout, softmax_scale=softmax_scale, causal=True
|
757 |
+
)
|
758 |
+
else:
|
759 |
+
attn_output = flash_attn_func(
|
760 |
+
query_states,
|
761 |
+
key_states,
|
762 |
+
value_states,
|
763 |
+
dropout,
|
764 |
+
softmax_scale=softmax_scale,
|
765 |
+
causal=True,
|
766 |
+
window_size=(self.config.sliding_window, self.config.sliding_window),
|
767 |
+
)
|
768 |
+
|
769 |
+
return attn_output
|
770 |
+
|
771 |
+
def _upad_input(self, query_layer, key_layer, value_layer, padding_mask, query_length):
|
772 |
+
batch_size, kv_seq_len, num_heads, head_dim = key_layer.shape
|
773 |
+
|
774 |
+
# On the first iteration we need to properly re-create the padding mask
|
775 |
+
# by slicing it on the proper place
|
776 |
+
if kv_seq_len != padding_mask.shape[-1]:
|
777 |
+
padding_mask_num_tokens = padding_mask.shape[-1]
|
778 |
+
padding_mask = padding_mask[:, padding_mask_num_tokens - kv_seq_len :]
|
779 |
+
|
780 |
+
indices_k, cu_seqlens_k, max_seqlen_in_batch_k = _get_unpad_data(padding_mask)
|
781 |
+
|
782 |
+
key_layer = index_first_axis(key_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k)
|
783 |
+
value_layer = index_first_axis(value_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k)
|
784 |
+
|
785 |
+
if query_length == kv_seq_len:
|
786 |
+
query_layer = index_first_axis(
|
787 |
+
query_layer.reshape(batch_size * kv_seq_len, num_heads, head_dim), indices_k
|
788 |
+
)
|
789 |
+
cu_seqlens_q = cu_seqlens_k
|
790 |
+
max_seqlen_in_batch_q = max_seqlen_in_batch_k
|
791 |
+
indices_q = indices_k
|
792 |
+
elif query_length == 1:
|
793 |
+
max_seqlen_in_batch_q = 1
|
794 |
+
cu_seqlens_q = torch.arange(
|
795 |
+
batch_size + 1, dtype=torch.int32, device=query_layer.device
|
796 |
+
) # There is a memcpy here, that is very bad.
|
797 |
+
indices_q = cu_seqlens_q[:-1]
|
798 |
+
query_layer = query_layer.squeeze(1)
|
799 |
+
else:
|
800 |
+
# The -q_len: slice assumes left padding.
|
801 |
+
padding_mask = padding_mask[:, -query_length:]
|
802 |
+
query_layer, indices_q, cu_seqlens_q, max_seqlen_in_batch_q = unpad_input(query_layer, padding_mask)
|
803 |
+
|
804 |
+
return (
|
805 |
+
query_layer,
|
806 |
+
key_layer,
|
807 |
+
value_layer,
|
808 |
+
indices_q,
|
809 |
+
(cu_seqlens_q, cu_seqlens_k),
|
810 |
+
(max_seqlen_in_batch_q, max_seqlen_in_batch_k),
|
811 |
+
)
|
812 |
+
|
813 |
+
|
814 |
+
class MistralDecoderLayer(nn.Module):
|
815 |
+
def __init__(self, config: MistralConfig):
|
816 |
+
super().__init__()
|
817 |
+
self.hidden_size = config.hidden_size
|
818 |
+
self.self_attn = (
|
819 |
+
MistralAttention(config=config)
|
820 |
+
if not getattr(config, "_flash_attn_2_enabled", False)
|
821 |
+
else MistralFlashAttention2(config)
|
822 |
+
)
|
823 |
+
self.mlp = MistralMLP(config)
|
824 |
+
self.input_layernorm = MistralRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
825 |
+
self.post_attention_layernorm = MistralRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
826 |
+
|
827 |
+
def forward(
|
828 |
+
self,
|
829 |
+
hidden_states: torch.Tensor,
|
830 |
+
attention_mask: Optional[torch.Tensor] = None,
|
831 |
+
position_ids: Optional[torch.LongTensor] = None,
|
832 |
+
past_key_value: Optional[Tuple[torch.Tensor]] = None,
|
833 |
+
output_attentions: Optional[bool] = False,
|
834 |
+
use_cache: Optional[bool] = False,
|
835 |
+
padding_mask: Optional[torch.Tensor] = None,
|
836 |
+
) -> Tuple[torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]]:
|
837 |
+
"""
|
838 |
+
Args:
|
839 |
+
hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, embed_dim)`
|
840 |
+
attention_mask (`torch.FloatTensor`, *optional*): attention mask of size
|
841 |
+
`(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
|
842 |
+
output_attentions (`bool`, *optional*):
|
843 |
+
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
|
844 |
+
returned tensors for more detail.
|
845 |
+
use_cache (`bool`, *optional*):
|
846 |
+
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
|
847 |
+
(see `past_key_values`).
|
848 |
+
past_key_value (`Tuple(torch.FloatTensor)`, *optional*): cached past key and value projection states
|
849 |
+
"""
|
850 |
+
|
851 |
+
residual = hidden_states
|
852 |
+
|
853 |
+
hidden_states = self.input_layernorm(hidden_states)
|
854 |
+
|
855 |
+
# Self Attention
|
856 |
+
hidden_states, self_attn_weights, present_key_value = self.self_attn(
|
857 |
+
hidden_states=hidden_states,
|
858 |
+
attention_mask=attention_mask,
|
859 |
+
position_ids=position_ids,
|
860 |
+
past_key_value=past_key_value,
|
861 |
+
output_attentions=output_attentions,
|
862 |
+
use_cache=use_cache,
|
863 |
+
padding_mask=padding_mask,
|
864 |
+
)
|
865 |
+
hidden_states = residual + hidden_states
|
866 |
+
|
867 |
+
# Fully Connected
|
868 |
+
residual = hidden_states
|
869 |
+
hidden_states = self.post_attention_layernorm(hidden_states)
|
870 |
+
hidden_states = self.mlp(hidden_states)
|
871 |
+
hidden_states = residual + hidden_states
|
872 |
+
|
873 |
+
outputs = (hidden_states,)
|
874 |
+
|
875 |
+
if output_attentions:
|
876 |
+
outputs += (self_attn_weights,)
|
877 |
+
|
878 |
+
if use_cache:
|
879 |
+
outputs += (present_key_value,)
|
880 |
+
|
881 |
+
return outputs
|
882 |
+
|
883 |
+
|
884 |
+
MISTRAL_START_DOCSTRING = r"""
|
885 |
+
This model inherits from [`PreTrainedModel`]. Check the superclass documentation for the generic methods the
|
886 |
+
library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
|
887 |
+
etc.)
|
888 |
+
|
889 |
+
This model is also a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass.
|
890 |
+
Use it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage
|
891 |
+
and behavior.
|
892 |
+
|
893 |
+
Parameters:
|
894 |
+
config ([`MistralConfig`]):
|
895 |
+
Model configuration class with all the parameters of the model. Initializing with a config file does not
|
896 |
+
load the weights associated with the model, only the configuration. Check out the
|
897 |
+
[`~PreTrainedModel.from_pretrained`] method to load the model weights.
|
898 |
+
"""
|
899 |
+
|
900 |
+
|
901 |
+
@add_start_docstrings(
|
902 |
+
"The bare Mistral Model outputting raw hidden-states without any specific head on top.",
|
903 |
+
MISTRAL_START_DOCSTRING,
|
904 |
+
)
|
905 |
+
class MistralPreTrainedModel(PreTrainedModel):
|
906 |
+
config_class = MistralConfig
|
907 |
+
base_model_prefix = "model"
|
908 |
+
supports_gradient_checkpointing = True
|
909 |
+
_no_split_modules = ["MistralDecoderLayer"]
|
910 |
+
_skip_keys_device_placement = "past_key_values"
|
911 |
+
_supports_flash_attn_2 = True
|
912 |
+
|
913 |
+
def _init_weights(self, module):
|
914 |
+
std = self.config.initializer_range
|
915 |
+
if isinstance(module, nn.Linear):
|
916 |
+
module.weight.data.normal_(mean=0.0, std=std)
|
917 |
+
if module.bias is not None:
|
918 |
+
module.bias.data.zero_()
|
919 |
+
elif isinstance(module, nn.Embedding):
|
920 |
+
module.weight.data.normal_(mean=0.0, std=std)
|
921 |
+
if module.padding_idx is not None:
|
922 |
+
module.weight.data[module.padding_idx].zero_()
|
923 |
+
|
924 |
+
def _set_gradient_checkpointing(self, module, value=False):
|
925 |
+
if isinstance(module, MistralModel):
|
926 |
+
module.gradient_checkpointing = value
|
927 |
+
|
928 |
+
|
929 |
+
MISTRAL_INPUTS_DOCSTRING = r"""
|
930 |
+
Args:
|
931 |
+
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
|
932 |
+
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you provide
|
933 |
+
it.
|
934 |
+
|
935 |
+
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
|
936 |
+
[`PreTrainedTokenizer.__call__`] for details.
|
937 |
+
|
938 |
+
[What are input IDs?](../glossary#input-ids)
|
939 |
+
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
|
940 |
+
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
|
941 |
+
|
942 |
+
- 1 for tokens that are **not masked**,
|
943 |
+
- 0 for tokens that are **masked**.
|
944 |
+
|
945 |
+
[What are attention masks?](../glossary#attention-mask)
|
946 |
+
|
947 |
+
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
|
948 |
+
[`PreTrainedTokenizer.__call__`] for details.
|
949 |
+
|
950 |
+
If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see
|
951 |
+
`past_key_values`).
|
952 |
+
|
953 |
+
If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]
|
954 |
+
and modify to your needs. See diagram 1 in [the paper](https://arxiv.org/abs/1910.13461) for more
|
955 |
+
information on the default strategy.
|
956 |
+
|
957 |
+
- 1 indicates the head is **not masked**,
|
958 |
+
- 0 indicates the head is **masked**.
|
959 |
+
position_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
|
960 |
+
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
|
961 |
+
config.n_positions - 1]`.
|
962 |
+
|
963 |
+
[What are position IDs?](../glossary#position-ids)
|
964 |
+
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
|
965 |
+
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
|
966 |
+
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
|
967 |
+
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
|
968 |
+
|
969 |
+
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
|
970 |
+
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
|
971 |
+
|
972 |
+
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
|
973 |
+
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
|
974 |
+
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
|
975 |
+
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
|
976 |
+
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
|
977 |
+
is useful if you want more control over how to convert `input_ids` indices into associated vectors than the
|
978 |
+
model's internal embedding lookup matrix.
|
979 |
+
use_cache (`bool`, *optional*):
|
980 |
+
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
|
981 |
+
`past_key_values`).
|
982 |
+
output_attentions (`bool`, *optional*):
|
983 |
+
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
|
984 |
+
tensors for more detail.
|
985 |
+
output_hidden_states (`bool`, *optional*):
|
986 |
+
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
|
987 |
+
more detail.
|
988 |
+
return_dict (`bool`, *optional*):
|
989 |
+
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
|
990 |
+
"""
|
991 |
+
|
992 |
+
|
993 |
+
@add_start_docstrings(
|
994 |
+
"The bare Mistral Model outputting raw hidden-states without any specific head on top.",
|
995 |
+
MISTRAL_START_DOCSTRING,
|
996 |
+
)
|
997 |
+
class MistralModel(MistralPreTrainedModel):
|
998 |
+
"""
|
999 |
+
Transformer decoder consisting of *config.num_hidden_layers* layers. Each layer is a [`MistralDecoderLayer`]
|
1000 |
+
|
1001 |
+
Args:
|
1002 |
+
config: MistralConfig
|
1003 |
+
"""
|
1004 |
+
|
1005 |
+
def __init__(self, config: MistralConfig):
|
1006 |
+
super().__init__(config)
|
1007 |
+
self.padding_idx = config.pad_token_id
|
1008 |
+
self.vocab_size = config.vocab_size
|
1009 |
+
|
1010 |
+
self.embed_tokens = nn.Embedding(config.vocab_size, config.hidden_size, self.padding_idx)
|
1011 |
+
self.layers = nn.ModuleList([MistralDecoderLayer(config) for _ in range(config.num_hidden_layers)])
|
1012 |
+
self.norm = MistralRMSNorm(config.hidden_size, eps=config.rms_norm_eps)
|
1013 |
+
|
1014 |
+
self.gradient_checkpointing = False
|
1015 |
+
# Initialize weights and apply final processing
|
1016 |
+
self.post_init()
|
1017 |
+
|
1018 |
+
def get_input_embeddings(self):
|
1019 |
+
return self.embed_tokens
|
1020 |
+
|
1021 |
+
def set_input_embeddings(self, value):
|
1022 |
+
self.embed_tokens = value
|
1023 |
+
|
1024 |
+
def _prepare_decoder_attention_mask(
|
1025 |
+
self, attention_mask, input_shape, inputs_embeds, past_key_values_length, sliding_window
|
1026 |
+
):
|
1027 |
+
# create causal mask
|
1028 |
+
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
|
1029 |
+
combined_attention_mask = None
|
1030 |
+
if input_shape[-1] > 1:
|
1031 |
+
if sliding_window is not None:
|
1032 |
+
combined_attention_mask = _make_sliding_window_causal_mask(
|
1033 |
+
input_shape,
|
1034 |
+
inputs_embeds.dtype,
|
1035 |
+
device=inputs_embeds.device,
|
1036 |
+
past_key_values_length=past_key_values_length,
|
1037 |
+
sliding_window=sliding_window,
|
1038 |
+
)
|
1039 |
+
else:
|
1040 |
+
combined_attention_mask = _make_causal_mask(
|
1041 |
+
input_shape,
|
1042 |
+
inputs_embeds.dtype,
|
1043 |
+
device=inputs_embeds.device,
|
1044 |
+
past_key_values_length=past_key_values_length,
|
1045 |
+
)
|
1046 |
+
|
1047 |
+
if attention_mask is not None:
|
1048 |
+
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
|
1049 |
+
expanded_attn_mask = _expand_mask(attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]).to(
|
1050 |
+
inputs_embeds.device
|
1051 |
+
)
|
1052 |
+
combined_attention_mask = (
|
1053 |
+
expanded_attn_mask if combined_attention_mask is None else expanded_attn_mask + combined_attention_mask
|
1054 |
+
)
|
1055 |
+
|
1056 |
+
return combined_attention_mask
|
1057 |
+
|
1058 |
+
@add_start_docstrings_to_model_forward(MISTRAL_INPUTS_DOCSTRING)
|
1059 |
+
def forward(
|
1060 |
+
self,
|
1061 |
+
input_ids: torch.LongTensor = None,
|
1062 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1063 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1064 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1065 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1066 |
+
use_cache: Optional[bool] = None,
|
1067 |
+
output_attentions: Optional[bool] = None,
|
1068 |
+
output_hidden_states: Optional[bool] = None,
|
1069 |
+
return_dict: Optional[bool] = None,
|
1070 |
+
) -> Union[Tuple, BaseModelOutputWithPast]:
|
1071 |
+
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
|
1072 |
+
output_hidden_states = (
|
1073 |
+
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
|
1074 |
+
)
|
1075 |
+
use_cache = use_cache if use_cache is not None else self.config.use_cache
|
1076 |
+
|
1077 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1078 |
+
|
1079 |
+
# retrieve input_ids and inputs_embeds
|
1080 |
+
if input_ids is not None and inputs_embeds is not None:
|
1081 |
+
raise ValueError("You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time")
|
1082 |
+
elif input_ids is not None:
|
1083 |
+
batch_size, seq_length = input_ids.shape
|
1084 |
+
elif inputs_embeds is not None:
|
1085 |
+
batch_size, seq_length, _ = inputs_embeds.shape
|
1086 |
+
else:
|
1087 |
+
raise ValueError("You have to specify either decoder_input_ids or decoder_inputs_embeds")
|
1088 |
+
|
1089 |
+
seq_length_with_past = seq_length
|
1090 |
+
past_key_values_length = 0
|
1091 |
+
|
1092 |
+
if past_key_values is not None:
|
1093 |
+
past_key_values_length = past_key_values[0][0].shape[2]
|
1094 |
+
seq_length_with_past = seq_length_with_past + past_key_values_length
|
1095 |
+
|
1096 |
+
if position_ids is None:
|
1097 |
+
device = input_ids.device if input_ids is not None else inputs_embeds.device
|
1098 |
+
position_ids = torch.arange(
|
1099 |
+
past_key_values_length, seq_length + past_key_values_length, dtype=torch.long, device=device
|
1100 |
+
)
|
1101 |
+
position_ids = position_ids.unsqueeze(0).view(-1, seq_length)
|
1102 |
+
else:
|
1103 |
+
position_ids = position_ids.view(-1, seq_length).long()
|
1104 |
+
|
1105 |
+
if inputs_embeds is None:
|
1106 |
+
inputs_embeds = self.embed_tokens(input_ids)
|
1107 |
+
|
1108 |
+
padding_mask = None
|
1109 |
+
|
1110 |
+
# embed positions
|
1111 |
+
if attention_mask is None:
|
1112 |
+
attention_mask = torch.ones(
|
1113 |
+
(batch_size, seq_length_with_past), dtype=torch.bool, device=inputs_embeds.device
|
1114 |
+
)
|
1115 |
+
elif 0 in attention_mask:
|
1116 |
+
padding_mask = attention_mask
|
1117 |
+
|
1118 |
+
if (
|
1119 |
+
padding_mask is not None
|
1120 |
+
and hasattr(self.config, "_flash_attn_2_enabled")
|
1121 |
+
and self.config._flash_attn_2_enabled
|
1122 |
+
):
|
1123 |
+
is_padding_right = padding_mask[:, -1].sum().item() != batch_size
|
1124 |
+
if is_padding_right:
|
1125 |
+
raise ValueError(
|
1126 |
+
"You are attempting to perform batched generation with padding_side='right'"
|
1127 |
+
" this may lead to unexpected behaviour for Flash Attention version of Mistral. Make sure to "
|
1128 |
+
" call `tokenizer.padding_side = 'left'` before tokenizing the input. "
|
1129 |
+
)
|
1130 |
+
|
1131 |
+
attention_mask = self._prepare_decoder_attention_mask(
|
1132 |
+
attention_mask,
|
1133 |
+
(batch_size, seq_length),
|
1134 |
+
inputs_embeds,
|
1135 |
+
past_key_values_length,
|
1136 |
+
sliding_window=self.config.sliding_window if hasattr(self.config, "sliding_window") else None,
|
1137 |
+
)
|
1138 |
+
|
1139 |
+
hidden_states = inputs_embeds
|
1140 |
+
|
1141 |
+
if self.gradient_checkpointing and self.training:
|
1142 |
+
if use_cache:
|
1143 |
+
logger.warning_once(
|
1144 |
+
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
|
1145 |
+
)
|
1146 |
+
use_cache = False
|
1147 |
+
|
1148 |
+
# decoder layers
|
1149 |
+
all_hidden_states = () if output_hidden_states else None
|
1150 |
+
all_self_attns = () if output_attentions else None
|
1151 |
+
next_decoder_cache = () if use_cache else None
|
1152 |
+
|
1153 |
+
for idx, decoder_layer in enumerate(self.layers):
|
1154 |
+
if output_hidden_states:
|
1155 |
+
all_hidden_states += (hidden_states,)
|
1156 |
+
|
1157 |
+
past_key_value = past_key_values[idx] if past_key_values is not None else None
|
1158 |
+
|
1159 |
+
if self.gradient_checkpointing and self.training:
|
1160 |
+
|
1161 |
+
def create_custom_forward(module):
|
1162 |
+
def custom_forward(*inputs):
|
1163 |
+
# None for past_key_value
|
1164 |
+
return module(*inputs, past_key_value, output_attentions, padding_mask=padding_mask)
|
1165 |
+
|
1166 |
+
return custom_forward
|
1167 |
+
|
1168 |
+
layer_outputs = torch.utils.checkpoint.checkpoint(
|
1169 |
+
create_custom_forward(decoder_layer),
|
1170 |
+
hidden_states,
|
1171 |
+
attention_mask,
|
1172 |
+
position_ids,
|
1173 |
+
)
|
1174 |
+
else:
|
1175 |
+
layer_outputs = decoder_layer(
|
1176 |
+
hidden_states,
|
1177 |
+
attention_mask=attention_mask,
|
1178 |
+
position_ids=position_ids,
|
1179 |
+
past_key_value=past_key_value,
|
1180 |
+
output_attentions=output_attentions,
|
1181 |
+
use_cache=use_cache,
|
1182 |
+
padding_mask=padding_mask,
|
1183 |
+
)
|
1184 |
+
|
1185 |
+
hidden_states = layer_outputs[0]
|
1186 |
+
|
1187 |
+
if use_cache:
|
1188 |
+
next_decoder_cache += (layer_outputs[2 if output_attentions else 1],)
|
1189 |
+
|
1190 |
+
if output_attentions:
|
1191 |
+
all_self_attns += (layer_outputs[1],)
|
1192 |
+
|
1193 |
+
hidden_states = self.norm(hidden_states)
|
1194 |
+
|
1195 |
+
# add hidden states from the last decoder layer
|
1196 |
+
if output_hidden_states:
|
1197 |
+
all_hidden_states += (hidden_states,)
|
1198 |
+
|
1199 |
+
next_cache = next_decoder_cache if use_cache else None
|
1200 |
+
if not return_dict:
|
1201 |
+
return tuple(v for v in [hidden_states, next_cache, all_hidden_states, all_self_attns] if v is not None)
|
1202 |
+
return BaseModelOutputWithPast(
|
1203 |
+
last_hidden_state=hidden_states,
|
1204 |
+
past_key_values=next_cache,
|
1205 |
+
hidden_states=all_hidden_states,
|
1206 |
+
attentions=all_self_attns,
|
1207 |
+
)
|
1208 |
+
|
1209 |
+
|
1210 |
+
class MistralForCausalLM(MistralPreTrainedModel):
|
1211 |
+
_tied_weights_keys = ["lm_head.weight"]
|
1212 |
+
|
1213 |
+
def __init__(self, config):
|
1214 |
+
super().__init__(config)
|
1215 |
+
self.model = MistralModel(config)
|
1216 |
+
self.vocab_size = config.vocab_size
|
1217 |
+
self.lm_head = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
|
1218 |
+
|
1219 |
+
# Initialize weights and apply final processing
|
1220 |
+
self.post_init()
|
1221 |
+
|
1222 |
+
def get_input_embeddings(self):
|
1223 |
+
return self.model.embed_tokens
|
1224 |
+
|
1225 |
+
def set_input_embeddings(self, value):
|
1226 |
+
self.model.embed_tokens = value
|
1227 |
+
|
1228 |
+
def get_output_embeddings(self):
|
1229 |
+
return self.lm_head
|
1230 |
+
|
1231 |
+
def set_output_embeddings(self, new_embeddings):
|
1232 |
+
self.lm_head = new_embeddings
|
1233 |
+
|
1234 |
+
def set_decoder(self, decoder):
|
1235 |
+
self.model = decoder
|
1236 |
+
|
1237 |
+
def get_decoder(self):
|
1238 |
+
return self.model
|
1239 |
+
|
1240 |
+
@add_start_docstrings_to_model_forward(MISTRAL_INPUTS_DOCSTRING)
|
1241 |
+
@replace_return_docstrings(output_type=CausalLMOutputWithPast, config_class=_CONFIG_FOR_DOC)
|
1242 |
+
def forward(
|
1243 |
+
self,
|
1244 |
+
input_ids: torch.LongTensor = None,
|
1245 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1246 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1247 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1248 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1249 |
+
labels: Optional[torch.LongTensor] = None,
|
1250 |
+
use_cache: Optional[bool] = None,
|
1251 |
+
output_attentions: Optional[bool] = None,
|
1252 |
+
output_hidden_states: Optional[bool] = None,
|
1253 |
+
return_dict: Optional[bool] = None,
|
1254 |
+
) -> Union[Tuple, CausalLMOutputWithPast]:
|
1255 |
+
r"""
|
1256 |
+
Args:
|
1257 |
+
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
|
1258 |
+
Labels for computing the masked language modeling loss. Indices should either be in `[0, ...,
|
1259 |
+
config.vocab_size]` or -100 (see `input_ids` docstring). Tokens with indices set to `-100` are ignored
|
1260 |
+
(masked), the loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`.
|
1261 |
+
|
1262 |
+
Returns:
|
1263 |
+
|
1264 |
+
Example:
|
1265 |
+
|
1266 |
+
```python
|
1267 |
+
>>> from transformers import AutoTokenizer, MistralForCausalLM
|
1268 |
+
|
1269 |
+
>>> model = MistralForCausalLM.from_pretrained(PATH_TO_CONVERTED_WEIGHTS)
|
1270 |
+
>>> tokenizer = AutoTokenizer.from_pretrained(PATH_TO_CONVERTED_TOKENIZER)
|
1271 |
+
|
1272 |
+
>>> prompt = "Hey, are you conscious? Can you talk to me?"
|
1273 |
+
>>> inputs = tokenizer(prompt, return_tensors="pt")
|
1274 |
+
|
1275 |
+
>>> # Generate
|
1276 |
+
>>> generate_ids = model.generate(inputs.input_ids, max_length=30)
|
1277 |
+
>>> tokenizer.batch_decode(generate_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False)[0]
|
1278 |
+
"Hey, are you conscious? Can you talk to me?\nI'm not conscious, but I can talk to you."
|
1279 |
+
```"""
|
1280 |
+
|
1281 |
+
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
|
1282 |
+
output_hidden_states = (
|
1283 |
+
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
|
1284 |
+
)
|
1285 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1286 |
+
|
1287 |
+
# decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
|
1288 |
+
outputs = self.model(
|
1289 |
+
input_ids=input_ids,
|
1290 |
+
attention_mask=attention_mask,
|
1291 |
+
position_ids=position_ids,
|
1292 |
+
past_key_values=past_key_values,
|
1293 |
+
inputs_embeds=inputs_embeds,
|
1294 |
+
use_cache=use_cache,
|
1295 |
+
output_attentions=output_attentions,
|
1296 |
+
output_hidden_states=output_hidden_states,
|
1297 |
+
return_dict=return_dict,
|
1298 |
+
)
|
1299 |
+
|
1300 |
+
hidden_states = outputs[0]
|
1301 |
+
logits = self.lm_head(hidden_states)
|
1302 |
+
logits = logits.float()
|
1303 |
+
|
1304 |
+
loss = None
|
1305 |
+
if labels is not None:
|
1306 |
+
# Shift so that tokens < n predict n
|
1307 |
+
shift_logits = logits[..., :-1, :].contiguous()
|
1308 |
+
shift_labels = labels[..., 1:].contiguous()
|
1309 |
+
# Flatten the tokens
|
1310 |
+
loss_fct = CrossEntropyLoss()
|
1311 |
+
shift_logits = shift_logits.view(-1, self.config.vocab_size)
|
1312 |
+
shift_labels = shift_labels.view(-1)
|
1313 |
+
# Enable model parallelism
|
1314 |
+
shift_labels = shift_labels.to(shift_logits.device)
|
1315 |
+
loss = loss_fct(shift_logits, shift_labels)
|
1316 |
+
|
1317 |
+
if not return_dict:
|
1318 |
+
output = (logits,) + outputs[1:]
|
1319 |
+
return (loss,) + output if loss is not None else output
|
1320 |
+
|
1321 |
+
return CausalLMOutputWithPast(
|
1322 |
+
loss=loss,
|
1323 |
+
logits=logits,
|
1324 |
+
past_key_values=outputs.past_key_values,
|
1325 |
+
hidden_states=outputs.hidden_states,
|
1326 |
+
attentions=outputs.attentions,
|
1327 |
+
)
|
1328 |
+
|
1329 |
+
def prepare_inputs_for_generation(
|
1330 |
+
self, input_ids, past_key_values=None, attention_mask=None, inputs_embeds=None, **kwargs
|
1331 |
+
):
|
1332 |
+
if past_key_values:
|
1333 |
+
input_ids = input_ids[:, -1:]
|
1334 |
+
|
1335 |
+
position_ids = kwargs.get("position_ids", None)
|
1336 |
+
if attention_mask is not None and position_ids is None:
|
1337 |
+
# create position_ids on the fly for batch generation
|
1338 |
+
position_ids = attention_mask.long().cumsum(-1) - 1
|
1339 |
+
position_ids.masked_fill_(attention_mask == 0, 1)
|
1340 |
+
if past_key_values:
|
1341 |
+
position_ids = position_ids[:, -1].unsqueeze(-1)
|
1342 |
+
|
1343 |
+
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
|
1344 |
+
if inputs_embeds is not None and past_key_values is None:
|
1345 |
+
model_inputs = {"inputs_embeds": inputs_embeds}
|
1346 |
+
else:
|
1347 |
+
model_inputs = {"input_ids": input_ids}
|
1348 |
+
|
1349 |
+
model_inputs.update(
|
1350 |
+
{
|
1351 |
+
"position_ids": position_ids,
|
1352 |
+
"past_key_values": past_key_values,
|
1353 |
+
"use_cache": kwargs.get("use_cache"),
|
1354 |
+
"attention_mask": attention_mask,
|
1355 |
+
}
|
1356 |
+
)
|
1357 |
+
return model_inputs
|
1358 |
+
|
1359 |
+
@staticmethod
|
1360 |
+
def _reorder_cache(past_key_values, beam_idx):
|
1361 |
+
reordered_past = ()
|
1362 |
+
for layer_past in past_key_values:
|
1363 |
+
reordered_past += (
|
1364 |
+
tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
|
1365 |
+
)
|
1366 |
+
return reordered_past
|
1367 |
+
|
1368 |
+
|
1369 |
+
@add_start_docstrings(
|
1370 |
+
"""
|
1371 |
+
The Mistral Model transformer with a sequence classification head on top (linear layer).
|
1372 |
+
|
1373 |
+
[`MistralForSequenceClassification`] uses the last token in order to do the classification, as other causal models
|
1374 |
+
(e.g. GPT-2) do.
|
1375 |
+
|
1376 |
+
Since it does classification on the last token, it requires to know the position of the last token. If a
|
1377 |
+
`pad_token_id` is defined in the configuration, it finds the last token that is not a padding token in each row. If
|
1378 |
+
no `pad_token_id` is defined, it simply takes the last value in each row of the batch. Since it cannot guess the
|
1379 |
+
padding tokens when `inputs_embeds` are passed instead of `input_ids`, it does the same (take the last value in
|
1380 |
+
each row of the batch).
|
1381 |
+
""",
|
1382 |
+
MISTRAL_START_DOCSTRING,
|
1383 |
+
)
|
1384 |
+
# Copied from transformers.models.llama.modeling_llama.LlamaForSequenceClassification with Llama->Mistral, LLAMA->MISTRAL
|
1385 |
+
class MistralForSequenceClassification(MistralPreTrainedModel):
|
1386 |
+
def __init__(self, config):
|
1387 |
+
super().__init__(config)
|
1388 |
+
self.num_labels = config.num_labels
|
1389 |
+
self.model = MistralModel(config)
|
1390 |
+
self.score = nn.Linear(config.hidden_size, self.num_labels, bias=False)
|
1391 |
+
|
1392 |
+
# Initialize weights and apply final processing
|
1393 |
+
self.post_init()
|
1394 |
+
|
1395 |
+
def get_input_embeddings(self):
|
1396 |
+
return self.model.embed_tokens
|
1397 |
+
|
1398 |
+
def set_input_embeddings(self, value):
|
1399 |
+
self.model.embed_tokens = value
|
1400 |
+
|
1401 |
+
@add_start_docstrings_to_model_forward(MISTRAL_INPUTS_DOCSTRING)
|
1402 |
+
def forward(
|
1403 |
+
self,
|
1404 |
+
input_ids: torch.LongTensor = None,
|
1405 |
+
attention_mask: Optional[torch.Tensor] = None,
|
1406 |
+
position_ids: Optional[torch.LongTensor] = None,
|
1407 |
+
past_key_values: Optional[List[torch.FloatTensor]] = None,
|
1408 |
+
inputs_embeds: Optional[torch.FloatTensor] = None,
|
1409 |
+
labels: Optional[torch.LongTensor] = None,
|
1410 |
+
use_cache: Optional[bool] = None,
|
1411 |
+
output_attentions: Optional[bool] = None,
|
1412 |
+
output_hidden_states: Optional[bool] = None,
|
1413 |
+
return_dict: Optional[bool] = None,
|
1414 |
+
) -> Union[Tuple, SequenceClassifierOutputWithPast]:
|
1415 |
+
r"""
|
1416 |
+
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
|
1417 |
+
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
|
1418 |
+
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
|
1419 |
+
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
|
1420 |
+
"""
|
1421 |
+
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
|
1422 |
+
|
1423 |
+
transformer_outputs = self.model(
|
1424 |
+
input_ids,
|
1425 |
+
attention_mask=attention_mask,
|
1426 |
+
position_ids=position_ids,
|
1427 |
+
past_key_values=past_key_values,
|
1428 |
+
inputs_embeds=inputs_embeds,
|
1429 |
+
use_cache=use_cache,
|
1430 |
+
output_attentions=output_attentions,
|
1431 |
+
output_hidden_states=output_hidden_states,
|
1432 |
+
return_dict=return_dict,
|
1433 |
+
)
|
1434 |
+
hidden_states = transformer_outputs[0]
|
1435 |
+
logits = self.score(hidden_states)
|
1436 |
+
|
1437 |
+
if input_ids is not None:
|
1438 |
+
batch_size = input_ids.shape[0]
|
1439 |
+
else:
|
1440 |
+
batch_size = inputs_embeds.shape[0]
|
1441 |
+
|
1442 |
+
if self.config.pad_token_id is None and batch_size != 1:
|
1443 |
+
raise ValueError("Cannot handle batch sizes > 1 if no padding token is defined.")
|
1444 |
+
if self.config.pad_token_id is None:
|
1445 |
+
sequence_lengths = -1
|
1446 |
+
else:
|
1447 |
+
if input_ids is not None:
|
1448 |
+
sequence_lengths = (torch.eq(input_ids, self.config.pad_token_id).long().argmax(-1) - 1).to(
|
1449 |
+
logits.device
|
1450 |
+
)
|
1451 |
+
else:
|
1452 |
+
sequence_lengths = -1
|
1453 |
+
|
1454 |
+
pooled_logits = logits[torch.arange(batch_size, device=logits.device), sequence_lengths]
|
1455 |
+
|
1456 |
+
loss = None
|
1457 |
+
if labels is not None:
|
1458 |
+
labels = labels.to(logits.device)
|
1459 |
+
if self.config.problem_type is None:
|
1460 |
+
if self.num_labels == 1:
|
1461 |
+
self.config.problem_type = "regression"
|
1462 |
+
elif self.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
|
1463 |
+
self.config.problem_type = "single_label_classification"
|
1464 |
+
else:
|
1465 |
+
self.config.problem_type = "multi_label_classification"
|
1466 |
+
|
1467 |
+
if self.config.problem_type == "regression":
|
1468 |
+
loss_fct = MSELoss()
|
1469 |
+
if self.num_labels == 1:
|
1470 |
+
loss = loss_fct(pooled_logits.squeeze(), labels.squeeze())
|
1471 |
+
else:
|
1472 |
+
loss = loss_fct(pooled_logits, labels)
|
1473 |
+
elif self.config.problem_type == "single_label_classification":
|
1474 |
+
loss_fct = CrossEntropyLoss()
|
1475 |
+
loss = loss_fct(pooled_logits.view(-1, self.num_labels), labels.view(-1))
|
1476 |
+
elif self.config.problem_type == "multi_label_classification":
|
1477 |
+
loss_fct = BCEWithLogitsLoss()
|
1478 |
+
loss = loss_fct(pooled_logits, labels)
|
1479 |
+
if not return_dict:
|
1480 |
+
output = (pooled_logits,) + transformer_outputs[1:]
|
1481 |
+
return ((loss,) + output) if loss is not None else output
|
1482 |
+
|
1483 |
+
return SequenceClassifierOutputWithPast(
|
1484 |
+
loss=loss,
|
1485 |
+
logits=pooled_logits,
|
1486 |
+
past_key_values=transformer_outputs.past_key_values,
|
1487 |
+
hidden_states=transformer_outputs.hidden_states,
|
1488 |
+
attentions=transformer_outputs.attentions,
|
1489 |
+
)
|
quant_config.json
ADDED
@@ -0,0 +1,6 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
{
|
2 |
+
"zero_point": true,
|
3 |
+
"q_group_size": 128,
|
4 |
+
"w_bit": 4,
|
5 |
+
"version": "GEMM"
|
6 |
+
}
|
special_tokens_map.json
ADDED
@@ -0,0 +1,10 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
{
|
2 |
+
"additional_special_tokens": [
|
3 |
+
"<unk>",
|
4 |
+
"<s>",
|
5 |
+
"</s>"
|
6 |
+
],
|
7 |
+
"bos_token": "<s>",
|
8 |
+
"eos_token": "</s>",
|
9 |
+
"unk_token": "<unk>"
|
10 |
+
}
|
tokenizer.json
ADDED
The diff for this file is too large to render.
See raw diff
|
|
tokenizer.model
ADDED
@@ -0,0 +1,3 @@
|
|
|
|
|
|
|
|
|
1 |
+
version https://git-lfs.github.com/spec/v1
|
2 |
+
oid sha256:dadfd56d766715c61d2ef780a525ab43b8e6da4de6865bda3d95fdef5e134055
|
3 |
+
size 493443
|
tokenizer_config.json
ADDED
@@ -0,0 +1,44 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
{
|
2 |
+
"added_tokens_decoder": {
|
3 |
+
"0": {
|
4 |
+
"content": "<unk>",
|
5 |
+
"lstrip": false,
|
6 |
+
"normalized": false,
|
7 |
+
"rstrip": false,
|
8 |
+
"single_word": false,
|
9 |
+
"special": true
|
10 |
+
},
|
11 |
+
"1": {
|
12 |
+
"content": "<s>",
|
13 |
+
"lstrip": false,
|
14 |
+
"normalized": false,
|
15 |
+
"rstrip": false,
|
16 |
+
"single_word": false,
|
17 |
+
"special": true
|
18 |
+
},
|
19 |
+
"2": {
|
20 |
+
"content": "</s>",
|
21 |
+
"lstrip": false,
|
22 |
+
"normalized": false,
|
23 |
+
"rstrip": false,
|
24 |
+
"single_word": false,
|
25 |
+
"special": true
|
26 |
+
}
|
27 |
+
},
|
28 |
+
"additional_special_tokens": [
|
29 |
+
"<unk>",
|
30 |
+
"<s>",
|
31 |
+
"</s>"
|
32 |
+
],
|
33 |
+
"bos_token": "<s>",
|
34 |
+
"clean_up_tokenization_spaces": false,
|
35 |
+
"eos_token": "</s>",
|
36 |
+
"legacy": true,
|
37 |
+
"model_max_length": 1000000000000000019884624838656,
|
38 |
+
"pad_token": null,
|
39 |
+
"sp_model_kwargs": {},
|
40 |
+
"spaces_between_special_tokens": false,
|
41 |
+
"tokenizer_class": "LlamaTokenizer",
|
42 |
+
"unk_token": "<unk>",
|
43 |
+
"use_default_system_prompt": true
|
44 |
+
}
|