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Fix LLaMa beam search when using parallelize #24224

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Merged
amyeroberts merged 3 commits into from
Jun 15, 2023
Merged

Fix LLaMa beam search when using parallelize #24224

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7edc640
Fix LLaMa beam search when using parallelize
FeiWang96 Jun 13, 2023
5563a48
fix code format in modeling_llama.py
FeiWang96 Jun 13, 2023
a44abef
fix format of _reorder_cache in modeling_llama.py
FeiWang96 Jun 15, 2023
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7 changes: 6 additions & 1 deletion src/transformers/models/llama/modeling_llama.py
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Original file line number Diff line number Diff line change
Expand Up @@ -760,7 +760,12 @@ def prepare_inputs_for_generation(
def _reorder_cache(past_key_values, beam_idx):
reordered_past = ()
for layer_past in past_key_values:
reordered_past += (tuple(past_state.index_select(0, beam_idx) for past_state in layer_past),)
reordered_past += (
tuple(
past_state.index_select(0, beam_idx.to(past_state.device))
for past_state in layer_past
),
)
return reordered_past


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