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[Bugfix][Core] add seq_id_to_seq_group clearing to avoid memory leak when s… #16472

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Merged
merged 1 commit into from
Apr 24, 2025
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[Bugfix][Core] add seq_id_to_seq_group clearing to avoid memory leak when s… #16472

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7 changes: 7 additions & 0 deletions vllm/outputs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,13 @@ def from_seq_group(
group.finish_seq(seq_group)
if assembled_seq_group is None:
return None

# clear finished seq in seq_id_to_seq_group
if len(group.to_be_finished) == 0:
for sub_request_id in list(group.seq_id_to_index.keys()):
if sub_request_id in seq_id_to_seq_group:
del seq_id_to_seq_group[sub_request_id]

return cls.from_seq_group(assembled_seq_group, use_cache,
seq_id_to_seq_group)

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