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Fix llama3.2-1b inference error by handling tie_word_embedding #2568

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Oct 9, 2024
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Fix llama3.2-1b inference error by handling tie_word_embedding #2568

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5 changes: 5 additions & 0 deletions lmdeploy/pytorch/models/llama.py
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Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,11 @@ def forward(
)
return hidden_states

def update_weights(self):
"""update weights."""
if self.config.tie_word_embeddings:
self.lm_head.weight = self.model.embed_tokens.weight

def get_logits(self, hidden_states: torch.Tensor):
"""compute logits of the model output."""
return self.lm_head(hidden_states)
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