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[Bugfix] fix the oom when chunkprefill with long context like 64k #2319

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Merged
jianzs merged 4 commits into from
Aug 13, 2025
Merged

[Bugfix] fix the oom when chunkprefill with long context like 64k #2319

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593fb1b
chunkprefill mla with torchair graph
phyde682 Aug 7, 2025
3863246
Merge branch 'vllm-project:main' into main
haojiangzheng Aug 11, 2025
844a676
Merge branch 'vllm-project:main' into main
haojiangzheng Aug 11, 2025
4e39ecd
[Bugfix] fix the oom when chunkprefill with long context like 64k
phyde682 Aug 11, 2025
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2 changes: 1 addition & 1 deletion vllm_ascend/worker/model_runner_v1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -829,7 +829,7 @@ def get_supported_tasks(self) -> "tuple[SupportedTask, ...]":
def _make_attention_mask(self, seq_lens, query_lens, position,
attn_state) -> torch.Tensor:
# Chunk Prefill situation.
if attn_state == AscendAttentionState.ChunkedPrefill:
if attn_state == AscendAttentionState.ChunkedPrefill and not self.vllm_config.model_config.use_mla:
return self.attn_mask_builder.get_splitfuse_attn_mask(
seq_lens, query_lens, position, self.dtype, self.device)
# Prefill without cache situation.
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