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2026-07-13 13:18:33 +08:00

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Python

# Copyright (c) Microsoft Corporation.
# SPDX-License-Identifier: Apache-2.0
# DeepSpeed Team
# Create a container object to save model-specific tensors using the policy file above.
from ..common_parameters import *
from ..layer_container_base import LayerContainer
'''
# HF Phi-2 model looks like this:
PhiForCausalLM(
(model): PhiModel(
(embed_tokens): Embedding(51200, 2560)
(embed_dropout): Dropout(p=0.0, inplace=False)
(layers): ModuleList(
(0-31): 32 x PhiDecoderLayer(
(self_attn): PhiAttention(
(q_proj): Linear(in_features=2560, out_features=2560, bias=True)
(k_proj): Linear(in_features=2560, out_features=2560, bias=True)
(v_proj): Linear(in_features=2560, out_features=2560, bias=True)
(dense): Linear(in_features=2560, out_features=2560, bias=True)
(rotary_emb): PhiRotaryEmbedding()
)
(mlp): PhiMLP(
(activation_fn): NewGELUActivation()
(fc1): Linear(in_features=2560, out_features=10240, bias=True)
(fc2): Linear(in_features=10240, out_features=2560, bias=True)
)
(input_layernorm): LayerNorm((2560,), eps=1e-05, elementwise_affine=True)
(resid_dropout): Dropout(p=0.1, inplace=False)
)
)
(final_layernorm): LayerNorm((2560,), eps=1e-05, elementwise_affine=True)
)
(lm_head): Linear(in_features=2560, out_features=51200, bias=True)
)
'''
class PhiTransformerContainer(LayerContainer):
"""
Transformer layer container for the Phi model.
"""
qkv_w: UnfusedQKVParameter
qkv_b: UnfusedQKVParameter
attn_out_w: AttentionOutputParameter
attn_out_b: AttentionOutputParameter
mlp_1_w: MLP1Parameter
mlp_1_b: MLP1Parameter
mlp_2_w: MLP2Parameter
mlp_2_b: MLP2Parameter
ln_gamma: NormParameter
ln_beta: NormParameter
PARAM_MAPPING = {
"self_attn.q_proj.weight": "qkv_w.q_params",
"self_attn.k_proj.weight": "qkv_w.k_params",
"self_attn.v_proj.weight": "qkv_w.v_params",
"self_attn.q_proj.bias": "qkv_b.q_params",
"self_attn.k_proj.bias": "qkv_b.k_params",
"self_attn.v_proj.bias": "qkv_b.v_params",
"self_attn.dense.weight": "attn_out_w.params",
"self_attn.dense.bias": "attn_out_b.params",
"mlp.fc1.weight": "mlp_1_w.params",
"mlp.fc1.bias": "mlp_1_b.params",
"mlp.fc2.weight": "mlp_2_w.params",
"mlp.fc2.bias": "mlp_2_b.params",
"input_layernorm.weight": "ln_gamma.params",
"input_layernorm.bias": "ln_beta.params",
}
class PhiNonTransformerContainer(LayerContainer):
"""
Non-Transformer layer container for the Phi model.
"""
word_emb: EmbeddingParameter
word_unembed_w: UnembedParameter
word_unembed_b: UnembedParameter
final_norm_gamma: NormParameter
final_norm_beta: NormParameter
PARAM_MAPPING = {
"model.embed_tokens.weight": "word_emb.params",
"model.final_layernorm.weight": "final_norm_gamma.params",
"model.final_layernorm.bias": "final_norm_beta.params",
"lm_head.weight": "word_unembed_w.params",
"lm_head.bias": "word_unembed_b.params",
}