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[Attention] Add ROCM_AITER_MLA_SPARSE to attention backend registry #29103

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Merged
vllm-bot merged 1 commit into from
Nov 21, 2025
Merged

[Attention] Add ROCM_AITER_MLA_SPARSE to attention backend registry #29103

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3 changes: 3 additions & 0 deletions vllm/attention/backends/registry.py
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,9 @@ class AttentionBackendEnum(Enum, metaclass=_AttentionBackendEnumMeta):
ROCM_AITER_FA = (
"vllm.v1.attention.backends.rocm_aiter_fa.AiterFlashAttentionBackend"
)
ROCM_AITER_MLA_SPARSE = (
"vllm.v1.attention.backends.mla.rocm_aiter_mla_sparse.ROCMAiterMLASparseBackend"
)
TORCH_SDPA = "" # this tag is only used for ViT
FLASHINFER = "vllm.v1.attention.backends.flashinfer.FlashInferBackend"
FLASHINFER_MLA = (
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5 changes: 1 addition & 4 deletions vllm/platforms/rocm.py
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Expand Up @@ -233,10 +233,7 @@ def get_attn_backend_cls(
"Sparse MLA backend on ROCm only supports block size 1 for now."
)
logger.info_once("Using Sparse MLA backend on V1 engine.")
return (
"vllm.v1.attention.backends.mla.rocm_aiter_mla_sparse."
"ROCMAiterMLASparseBackend"
)
return AttentionBackendEnum.ROCM_AITER_MLA_SPARSE.get_path()

if use_mla:
if selected_backend is None:
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