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Deactive ncclAllToAll #1011

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Merged
merged 1 commit into from
May 18, 2022
Merged

Deactive ncclAllToAll #1011

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4 changes: 0 additions & 4 deletions torch/csrc/cuda/nccl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -652,9 +652,6 @@ void all2all_single_equal_split(at::Tensor& input,
const auto* sendbuff = reinterpret_cast<char*>(input.data_ptr());
auto* recvbuff = reinterpret_cast<char *>(output.data_ptr());
auto comm = to_nccl_comm(_comm);
#if defined(USE_ROCM) && ROCM_VERSION >= 50000
NCCL_CHECK(ncclAllToAll(sendbuff , recvbuff , count, type, comm, stream));
#else
NCCL_CHECK(ncclCommCount(comm, &numranks));
NCCL_CHECK(ncclGroupStart());
for(const auto r : c10::irange(numranks)) {
Expand All @@ -666,7 +663,6 @@ void all2all_single_equal_split(at::Tensor& input,
}
}
NCCL_CHECK(ncclGroupEnd());
#endif
#else
AT_ERROR("all2all is only supported for NCCL lib version >= 2.7.0");
#endif
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