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OpenMPTarget: DeepCopy in separate file. (kokkos#7192)
* OpenMPTarget: DeepCopy in separate file. * OpenMPTarget: Fix indentation. --------- Co-authored-by: Rahulkumar Gayatri <[email protected]>
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| //@HEADER | ||
| // ************************************************************************ | ||
| // | ||
| // Kokkos v. 4.0 | ||
| // Copyright (2022) National Technology & Engineering | ||
| // Solutions of Sandia, LLC (NTESS). | ||
| // | ||
| // Under the terms of Contract DE-NA0003525 with NTESS, | ||
| // the U.S. Government retains certain rights in this software. | ||
| // | ||
| // Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions. | ||
| // See https://kokkos.org/LICENSE for license information. | ||
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| // | ||
| //@HEADER | ||
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| #ifndef KOKKOS_IMPL_PUBLIC_INCLUDE | ||
| #include <Kokkos_Macros.hpp> | ||
| static_assert(false, | ||
| "Including non-public Kokkos header files is not allowed."); | ||
| #endif | ||
| #ifndef KOKKOS_OPENMPTARGET_DEEP_COPY_HPP | ||
| #define KOKKOS_OPENMPTARGET_DEEP_COPY_HPP | ||
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| #include <OpenMPTarget/Kokkos_OpenMPTarget_Error.hpp> | ||
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| //---------------------------------------------------------------------------- | ||
| //---------------------------------------------------------------------------- | ||
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| namespace Kokkos { | ||
| namespace Impl { | ||
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| // TODO: implement all possible deep_copies | ||
| template <class ExecutionSpace> | ||
| struct DeepCopy<Kokkos::Experimental::OpenMPTargetSpace, | ||
| Kokkos::Experimental::OpenMPTargetSpace, ExecutionSpace> { | ||
| DeepCopy(void* dst, const void* src, size_t n) { | ||
| // In the Release and RelWithDebInfo builds, the size of the memcpy should | ||
| // be greater than zero to avoid error. omp_target_memcpy returns zero on | ||
| // success. | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_default_device(), | ||
| omp_get_default_device())); | ||
| } | ||
| DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) { | ||
| exec.fence( | ||
| "Kokkos::Impl::DeepCopy<OpenMPTargetSpace, OpenMPTargetSpace>: fence " | ||
| "before " | ||
| "copy"); | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_default_device(), | ||
| omp_get_default_device())); | ||
| } | ||
| }; | ||
|
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| template <class ExecutionSpace> | ||
| struct DeepCopy<Kokkos::Experimental::OpenMPTargetSpace, HostSpace, | ||
| ExecutionSpace> { | ||
| DeepCopy(void* dst, const void* src, size_t n) { | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_default_device(), | ||
| omp_get_initial_device())); | ||
| } | ||
| DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) { | ||
| exec.fence( | ||
| "Kokkos::Impl::DeepCopy<OpenMPTargetSpace, HostSpace>: fence before " | ||
| "copy"); | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_default_device(), | ||
| omp_get_initial_device())); | ||
| } | ||
| }; | ||
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| template <class ExecutionSpace> | ||
| struct DeepCopy<HostSpace, Kokkos::Experimental::OpenMPTargetSpace, | ||
| ExecutionSpace> { | ||
| DeepCopy(void* dst, const void* src, size_t n) { | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_initial_device(), | ||
| omp_get_default_device())); | ||
| } | ||
| DeepCopy(const ExecutionSpace& exec, void* dst, const void* src, size_t n) { | ||
| exec.fence( | ||
| "Kokkos::Impl::DeepCopy<HostSpace, OpenMPTargetSpace>: fence before " | ||
| "copy"); | ||
| if (n > 0) | ||
| KOKKOS_IMPL_OMPT_SAFE_CALL(omp_target_memcpy( | ||
| dst, const_cast<void*>(src), n, 0, 0, omp_get_initial_device(), | ||
| omp_get_default_device())); | ||
| } | ||
| }; | ||
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| } // namespace Impl | ||
| } // namespace Kokkos | ||
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| #endif // KOKKOS_OPENMPTARGET_DEEP_COPY_HPP |