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171 lines
8.2 KiB
171 lines
8.2 KiB
# Copyright 2024 BigCode 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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"""Starcoder2 model configuration"""
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from ...configuration_utils import PreTrainedConfig
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from ...modeling_rope_utils import RopeParameters
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from ...utils import logging
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logger = logging.get_logger(__name__)
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class Starcoder2Config(PreTrainedConfig):
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r"""
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This is the configuration class to store the configuration of a [`Starcoder2Model`]. It is used to instantiate a
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Starcoder2 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 [bigcode/starcoder2-7b](https://huggingface.co/bigcode/starcoder2-7b) model.
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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 49152):
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Vocabulary size of the Starcoder2 model. Defines the number of different tokens that can be represented by the
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`inputs_ids` passed when calling [`Starcoder2Model`]
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hidden_size (`int`, *optional*, defaults to 3072):
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Dimension of the hidden representations.
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intermediate_size (`int`, *optional*, defaults to 12288):
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Dimension of the MLP representations.
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num_hidden_layers (`int`, *optional*, defaults to 30):
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Number of hidden layers in the Transformer encoder.
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num_attention_heads (`int`, *optional*, defaults to 24):
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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 2):
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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, check out [this
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paper](https://huggingface.co/papers/2305.13245). If it is not specified, will default to `8`.
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hidden_act (`str` or `function`, *optional*, defaults to `"gelu_pytorch_tanh"`):
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The non-linear activation function (function or string) in the decoder.
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max_position_embeddings (`int`, *optional*, defaults to 4096):
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The maximum sequence length that this model might ever be used with. Starcoder2'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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norm_epsilon (`float`, *optional*, defaults to 1e-05):
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Epsilon value for the layer norm
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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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bos_token_id (`int`, *optional*, defaults to 50256):
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The id of the "beginning-of-sequence" token.
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eos_token_id (`int`, *optional*, defaults to 50256):
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The id of the "end-of-sequence" token.
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pad_token_id (`int`, *optional*):
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Padding token id.
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rope_parameters (`RopeParameters`, *optional*):
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Dictionary containing the configuration parameters for the RoPE embeddings. The dictionary should contain
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a value for `rope_theta` and optionally parameters used for scaling in case you want to use RoPE
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with longer `max_position_embeddings`.
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sliding_window (`int`, *optional*):
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Sliding window attention window size. If not specified, will default to `None` (no sliding window).
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attention_dropout (`float`, *optional*, defaults to 0.0):
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The dropout ratio for the attention probabilities.
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residual_dropout (`float`, *optional*, defaults to 0.0):
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Residual connection dropout value.
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embedding_dropout (`float`, *optional*, defaults to 0.0):
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Embedding dropout.
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use_bias (`bool`, *optional*, defaults to `True`):
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Whether to use bias term on linear layers of the model.
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tie_word_embeddings (`bool`, *optional*, defaults to `True`):
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Whether to tie weight embeddings
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```python
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>>> from transformers import Starcoder2Model, Starcoder2Config
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>>> # Initializing a Starcoder2 7B style configuration
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>>> configuration = Starcoder2Config()
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>>> # Initializing a model from the Starcoder2 7B style configuration
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>>> model = Starcoder2Model(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 = "starcoder2"
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keys_to_ignore_at_inference = ["past_key_values"]
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# Default tensor parallel plan for base model `Starcoder2`
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base_model_tp_plan = {
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"layers.*.self_attn.q_proj": "colwise",
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"layers.*.self_attn.k_proj": "colwise",
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"layers.*.self_attn.v_proj": "colwise",
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"layers.*.self_attn.o_proj": "rowwise",
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"layers.*.mlp.c_fc": "colwise",
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"layers.*.mlp.c_proj": "rowwise",
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}
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base_model_pp_plan = {
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"embed_tokens": (["input_ids"], ["inputs_embeds"]),
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"layers": (["hidden_states", "attention_mask"], ["hidden_states"]),
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"norm": (["hidden_states"], ["hidden_states"]),
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}
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def __init__(
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self,
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vocab_size: int | None = 49152,
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hidden_size: int | None = 3072,
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intermediate_size: int | None = 12288,
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num_hidden_layers: int | None = 30,
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num_attention_heads: int | None = 24,
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num_key_value_heads: int | None = 2,
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hidden_act: str | None = "gelu_pytorch_tanh",
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max_position_embeddings: int | None = 4096,
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initializer_range: float | None = 0.018042,
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norm_epsilon: int | None = 1e-5,
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use_cache: bool | None = True,
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bos_token_id: int | None = 50256,
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eos_token_id: int | None = 50256,
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pad_token_id: int | None = None,
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rope_parameters: RopeParameters | dict[str, RopeParameters] | None = None,
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sliding_window: int | None = None,
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attention_dropout: float | None = 0.0,
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residual_dropout: float | None = 0.0,
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embedding_dropout: float | None = 0.0,
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use_bias: bool | None = True,
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tie_word_embeddings: bool | None = True,
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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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self.use_bias = use_bias
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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.norm_epsilon = norm_epsilon
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self.use_cache = use_cache
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self.attention_dropout = attention_dropout
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self.residual_dropout = residual_dropout
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self.embedding_dropout = embedding_dropout
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self.rope_parameters = rope_parameters
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self.bos_token_id = bos_token_id
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self.eos_token_id = eos_token_id
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self.pad_token_id = pad_token_id
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self.tie_word_embeddings = tie_word_embeddings
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super().__init__(**kwargs)
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__all__ = ["Starcoder2Config"]
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