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[Kernel] mark TorchSDPABackend swap_blocks NotImplementedError (#19749)

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Ning Xie 2025-06-21 02:18:11 +08:00 committed by GitHub
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vllm/attention/backends/torch_sdpa.py
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@ -65,7 +65,7 @@ class TorchSDPABackend(AttentionBackend):
dst_kv_cache: torch.Tensor,
src_to_dst: torch.Tensor,
) -> None:
PagedAttention.swap_blocks(src_kv_cache, dst_kv_cache, src_to_dst)
raise NotImplementedError("Swap is not supported in TorchSDPABackend.")
@staticmethod
def copy_blocks(