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[Bugfix] Fix the incorrect use of the output parameter in _forward_fia_slidingwindow #6469

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Merged
weijinqian0 merged 2 commits into from
Feb 5, 2026
+3 −2
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[Bugfix] Fix the incorrect use of the output parameter in _forward_fia_slidingwindow #6469

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059c89f
Fix the incorrect use of the output parameter in _forward_fia_sliding…
acat-rw Feb 1, 2026
6221961
Merge branch 'vllm-project:main' into main
acat-rw Feb 5, 2026
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5 changes: 3 additions & 2 deletions vllm_ascend/attention/attention_v1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -727,7 +727,7 @@ def _forward_fia_slidingwindow(self, query: torch.Tensor, attn_metadata: AscendM
key = self.key_cache.flatten(2, 3).contiguous()
value = self.value_cache.flatten(2, 3).contiguous()

output, _ = torch_npu.npu_fused_infer_attention_score(
attn_output, _ = torch_npu.npu_fused_infer_attention_score(
query,
key,
value,
Expand All @@ -742,7 +742,8 @@ def _forward_fia_slidingwindow(self, query: torch.Tensor, attn_metadata: AscendM
actual_seq_lengths_kv=attn_metadata.seq_lens,
)

output = output.view(batch_size, self.num_heads, self.head_size)
attn_output = attn_output.view(batch_size, self.num_heads, self.head_size)
output[:batch_size] = attn_output[:batch_size]
return output

def forward_fused_infer_attention(
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