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[ROCm] [Bugfix] compute_attn_mask_seqlen for qwen3 omni (#29974)

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Signed-off-by: tjtanaa <tunjian.tan@embeddedllm.com>
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TJian 2025-12-04 16:20:24 +08:00 committed by GitHub
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commit 3f1b03739a
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1 changed files with 4 additions and 1 deletions
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5
vllm/model_executor/models/qwen3_omni_moe_thinker.py
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@ -494,7 +494,10 @@ class Qwen3Omni_VisionTransformer(nn.Module):
cu_seqlens: torch.Tensor, cu_seqlens: torch.Tensor,
) -> torch.Tensor: ) -> torch.Tensor:
max_seqlen = torch.zeros([], device=cu_seqlens.device) max_seqlen = torch.zeros([], device=cu_seqlens.device)
if self.attn_backend == AttentionBackendEnum.FLASH_ATTN: if self.attn_backend in {
AttentionBackendEnum.FLASH_ATTN,
AttentionBackendEnum.ROCM_AITER_FA,
}:
max_seqlen = (cu_seqlens[1:] - cu_seqlens[:-1]).max() max_seqlen = (cu_seqlens[1:] - cu_seqlens[:-1]).max()
return max_seqlen return max_seqlen