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Phi update 202311 (axolotl-ai-cloud#876)
* add phi modeling from hf * update for packing and use new modeling class for phi * update e2e tests for phi to use new model name * update example phi to also use new phi model name * use AutoModelForCausalLM for phi lora since sample packing isn't supported
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# pylint: skip-file | ||
# Copyright (c) Microsoft Corporation. | ||
# Licensed under the MIT license. | ||
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import math | ||
from typing import Optional | ||
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from transformers import PretrainedConfig | ||
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class PhiConfig(PretrainedConfig): | ||
"""Phi configuration.""" | ||
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model_type = "phi" | ||
attribute_map = { | ||
"max_position_embeddings": "n_positions", | ||
"hidden_size": "n_embd", | ||
"num_attention_heads": "n_head", | ||
"num_hidden_layers": "n_layer", | ||
} | ||
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def __init__( | ||
self, | ||
vocab_size: int = 50304, | ||
n_positions: int = 2048, | ||
n_embd: int = 1024, | ||
n_layer: int = 20, | ||
n_inner: Optional[int] = None, | ||
n_head: int = 16, | ||
n_head_kv: Optional[int] = None, | ||
rotary_dim: Optional[int] = 32, | ||
activation_function: Optional[str] = "gelu_new", | ||
flash_attn: bool = False, | ||
flash_rotary: bool = False, | ||
fused_dense: bool = False, | ||
attn_pdrop: float = 0.0, | ||
embd_pdrop: float = 0.0, | ||
resid_pdrop: float = 0.0, | ||
layer_norm_epsilon: float = 1e-5, | ||
initializer_range: float = 0.02, | ||
tie_word_embeddings: bool = False, | ||
pad_vocab_size_multiple: int = 64, | ||
**kwargs | ||
) -> None: | ||
self.vocab_size = int( | ||
math.ceil(vocab_size / pad_vocab_size_multiple) * pad_vocab_size_multiple | ||
) | ||
self.n_positions = n_positions | ||
self.n_embd = n_embd | ||
self.n_layer = n_layer | ||
self.n_inner = n_inner | ||
self.n_head = n_head | ||
self.n_head_kv = n_head_kv | ||
self.rotary_dim = min(rotary_dim, n_embd // n_head) | ||
self.activation_function = activation_function | ||
self.flash_attn = flash_attn | ||
self.flash_rotary = flash_rotary | ||
self.fused_dense = fused_dense | ||
self.attn_pdrop = attn_pdrop | ||
self.embd_pdrop = embd_pdrop | ||
self.resid_pdrop = resid_pdrop | ||
self.layer_norm_epsilon = layer_norm_epsilon | ||
self.initializer_range = initializer_range | ||
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super().__init__(tie_word_embeddings=tie_word_embeddings, **kwargs) |
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