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Throw error when not compiled with NCCL. (#5170)

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Jiaming Yuan 2020-01-07 11:15:19 +08:00 committed by GitHub
parent 2d95b9a4b6
commit 2b9a62a806
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4
src/common/device_helpers.cu
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@ -71,6 +71,10 @@ void AllReducer::Init(int _device_ordinal) {
dh::safe_nccl(ncclCommInitRank(&comm, rabit::GetWorldSize(), id, rank));
safe_cuda(cudaStreamCreate(&stream));
initialised_ = true;
#else
if (rabit::IsDistributed()) {
LOG(FATAL) << "XGBoost is not compiled with NCCL.";
}
#endif // XGBOOST_USE_NCCL
}