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Set replacement=True in torch.multinomial #858

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Merged
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Aug 25, 2023
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Set replacement=True in torch.multinomial #858

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4 changes: 3 additions & 1 deletion vllm/model_executor/layers/sampler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -302,7 +302,9 @@ def _sample_from_prompt(
# Random sampling.
# Sample `best_of` tokens for the prompt.
num_seqs = sampling_params.best_of
next_token_ids = torch.multinomial(prob, num_samples=num_seqs)
next_token_ids = torch.multinomial(prob,
num_samples=num_seqs,
replacement=True)
next_token_ids = next_token_ids.tolist()
return next_token_ids

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