NotImplementedError: No operator found for memory_efficient_attention_forward

[sankexin]

NotImplementedError: No operator found for memory_efficient_attention_forward with inputs:
query : shape=(1, 1024, 8, 4, 128) (torch.float32)
key : shape=(1, 1024, 8, 4, 128) (torch.float32)
value : shape=(1, 1024, 8, 4, 128) (torch.float32)

pip show xformers：
Name: xformers
Version: 0.0.26.post1

python3 -m xformers.info：
WARNING[XFORMERS]: xFormers can't load C++/CUDA extensions. xFormers was built for:
PyTorch 2.3.0+cu121 with CUDA 1201 (you have 2.1.0+cu121)
Python 3.10.14 (you have 3.10.0)
Please reinstall xformers (see https://github.com/facebookresearch/xformers#installing-xformers)
Memory-efficient attention, SwiGLU, sparse and more won't be available.
Set XFORMERS_MORE_DETAILS=1 for more details
Unable to find python bindings at /usr/local/dcgm/bindings/python3. No data will be captured.
xFormers 0.0.26.post1
memory_efficient_attention.ckF: unavailable
memory_efficient_attention.ckB: unavailable
memory_efficient_attention.ck_decoderF: unavailable
memory_efficient_attention.ck_splitKF: unavailable
memory_efficient_attention.cutlassF: unavailable
memory_efficient_attention.cutlassB: unavailable
memory_efficient_attention.decoderF: unavailable
memory_efficient_attention.flshattF@0.0.0: unavailable
memory_efficient_attention.flshattB@0.0.0: unavailable
memory_efficient_attention.smallkF: unavailable
memory_efficient_attention.smallkB: unavailable
memory_efficient_attention.triton_splitKF: available
indexing.scaled_index_addF: available
indexing.scaled_index_addB: available
indexing.index_select: available
sequence_parallel_fused.write_values: unavailable
sequence_parallel_fused.wait_values: unavailable
sequence_parallel_fused.cuda_memset_32b_async: unavailable
sp24.sparse24_sparsify_both_ways: unavailable
sp24.sparse24_apply: unavailable
sp24.sparse24_apply_dense_output: unavailable
sp24._sparse24_gemm: unavailable
sp24._cslt_sparse_mm@0.0.0: available
swiglu.dual_gemm_silu: unavailable
swiglu.gemm_fused_operand_sum: unavailable
swiglu.fused.p.cpp: not built
is_triton_available: True
pytorch.version: 2.1.0+cu121
pytorch.cuda: available
gpu.compute_capability: 8.0
gpu.name: NVIDIA A800 80GB PCIe
dcgm_profiler: unavailable
build.info: available
build.cuda_version: 1201
build.hip_version: None
build.python_version: 3.10.14
build.torch_version: 2.3.0+cu121
build.env.TORCH_CUDA_ARCH_LIST: 5.0+PTX 6.0 6.1 7.0 7.5 8.0+PTX 9.0
build.env.PYTORCH_ROCM_ARCH: None
build.env.XFORMERS_BUILD_TYPE: Release
build.env.XFORMERS_ENABLE_DEBUG_ASSERTIONS: None
build.env.NVCC_FLAGS: None
build.env.XFORMERS_PACKAGE_FROM: wheel-v0.0.26.post1
source.privacy: open source