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Skip optional synchronization in thrust. (#9212)

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Jiaming Yuan 2023-05-30 17:23:09 +08:00 committed by GitHub
parent ddec0f378c
commit ae7450ce54
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1 changed files with 15 additions and 3 deletions
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18
src/common/cuda_context.cuh
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@ -1,5 +1,5 @@
/**
* Copyright 2022 by XGBoost Contributors
* Copyright 2022-2023, XGBoost Contributors
*/
#ifndef XGBOOST_COMMON_CUDA_CONTEXT_CUH_
#define XGBOOST_COMMON_CUDA_CONTEXT_CUH_
@ -17,11 +17,23 @@ struct CUDAContext {
/**
* \brief Caching thrust policy.
*/
auto CTP() const { return thrust::cuda::par(caching_alloc_).on(dh::DefaultStream()); }
auto CTP() const {
#if THRUST_MAJOR_VERSION >= 2
return thrust::cuda::par_nosync(caching_alloc_).on(dh::DefaultStream());
#else
return thrust::cuda::par(caching_alloc_).on(dh::DefaultStream());
#endif // THRUST_MAJOR_VERSION >= 2
}
/**
* \brief Thrust policy without caching allocator.
*/
auto TP() const { return thrust::cuda::par(alloc_).on(dh::DefaultStream()); }
auto TP() const {
#if THRUST_MAJOR_VERSION >= 2
return thrust::cuda::par_nosync(alloc_).on(dh::DefaultStream());
#else
return thrust::cuda::par(alloc_).on(dh::DefaultStream());
#endif // THRUST_MAJOR_VERSION >= 2
}
auto Stream() const { return dh::DefaultStream(); }
};
} // namespace xgboost