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lammps/lib/kokkos/core/unit_test/TestViewCopy.hpp
2020-03-25 14:08:39 -06:00

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/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 3.0
// Copyright (2020) 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.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Questions? Contact Christian R. Trott (crtrott@sandia.gov)
//
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*/
#include <cstdio>
#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>
namespace Test {
namespace {
template <typename ExecSpace>
struct TestViewCopy {
using InExecSpace = ExecSpace;
static void test_view_copy(const int dim0, const int dim1, const int dim2) {
#if defined(KOKKOS_ENABLE_CUDA) || defined(KOKKOS_ENABLE_ROCM)
// ExecSpace = CudaUVM, CudaHostPinned
// This test will fail at runtime with an illegal memory access if something
// goes wrong Test 1: deep_copy from host_mirror_space to ExecSpace and
// ExecSpace back to host_mirror_space
{
typedef Kokkos::View<double****, InExecSpace> Rank4ViewType;
Rank4ViewType view_4;
view_4 = Rank4ViewType("view_4", dim0, dim1, dim2, dim2);
typedef typename Kokkos::Impl::is_space<
InExecSpace>::host_mirror_space::execution_space host_space_type;
Kokkos::View<double**, Kokkos::LayoutLeft, host_space_type> srcView(
"srcView", dim2, dim2);
// Strided dst view
auto dstView =
Kokkos::subview(view_4, 0, 0, Kokkos::ALL(), Kokkos::ALL());
// host_mirror_space to ExecSpace
Kokkos::deep_copy(dstView, srcView);
Kokkos::fence();
// ExecSpace to host_mirror_space
Kokkos::deep_copy(srcView, dstView);
Kokkos::fence();
}
// Test 2: deep_copy from Cuda to ExecSpace and ExecSpace back to Cuda
{
typedef Kokkos::View<double****, InExecSpace> Rank4ViewType;
Rank4ViewType view_4;
view_4 = Rank4ViewType("view_4", dim0, dim1, dim2, dim2);
#if defined(KOKKOS_ENABLE_CUDA)
typedef typename std::conditional<
Kokkos::Impl::MemorySpaceAccess<
Kokkos::CudaSpace,
typename InExecSpace::memory_space>::accessible,
Kokkos::CudaSpace, InExecSpace>::type space_type;
#endif
#if defined(KOKKOS_ENABLE_ROCM)
typedef typename std::conditional<
Kokkos::Impl::MemorySpaceAccess<
Kokkos::ROCmSpace,
typename InExecSpace::memory_space>::accessible,
Kokkos::ROCmSpace, InExecSpace>::type space_type;
#endif
Kokkos::View<double**, Kokkos::LayoutLeft, space_type> srcView(
"srcView", dim2, dim2);
// Strided dst view
auto dstView =
Kokkos::subview(view_4, 0, 0, Kokkos::ALL(), Kokkos::ALL());
// Cuda to ExecSpace
Kokkos::deep_copy(dstView, srcView);
Kokkos::fence();
// ExecSpace to Cuda
Kokkos::deep_copy(srcView, dstView);
Kokkos::fence();
}
// Test 3: deep_copy from host_space to ExecSpace and ExecSpace back to
// host_space
{
typedef Kokkos::View<double****, InExecSpace> Rank4ViewType;
Rank4ViewType view_4;
view_4 = Rank4ViewType("view_4", dim0, dim1, dim2, dim2);
typedef Kokkos::HostSpace host_space_type;
Kokkos::View<double**, Kokkos::LayoutLeft, host_space_type> srcView(
"srcView", dim2, dim2);
// Strided dst view
auto dstView =
Kokkos::subview(view_4, 0, 0, Kokkos::ALL(), Kokkos::ALL());
// host_space to ExecSpace
Kokkos::deep_copy(dstView, srcView);
Kokkos::fence();
// ExecSpace to host_space
Kokkos::deep_copy(srcView, dstView);
Kokkos::fence();
}
#endif
} // end test_view_copy
}; // end struct
} // namespace
TEST(TEST_CATEGORY, view_copy_tests) {
// Only include this file to be compiled with CudaUVM and CudaHostPinned
TestViewCopy<TEST_EXECSPACE>::test_view_copy(4, 2, 3);
TestViewCopy<TEST_EXECSPACE>::test_view_copy(4, 2, 0);
}
TEST(TEST_CATEGORY, view_copy_degenerated) {
// Only include this file to be compiled with CudaUVM and CudaHostPinned
Kokkos::View<int*, Kokkos::MemoryTraits<Kokkos::Unmanaged>> v_um_def_1;
Kokkos::View<int*, Kokkos::MemoryTraits<Kokkos::Unmanaged>> v_um_1(
reinterpret_cast<int*>(-1), 0);
Kokkos::View<int*> v_m_def_1;
Kokkos::View<int*> v_m_1("v_m_1", 0);
Kokkos::View<int*, Kokkos::MemoryTraits<Kokkos::Unmanaged>> v_um_def_2;
Kokkos::View<int*, Kokkos::MemoryTraits<Kokkos::Unmanaged>> v_um_2(
reinterpret_cast<int*>(-1), 0);
Kokkos::View<int*> v_m_def_2;
Kokkos::View<int*> v_m_2("v_m_2", 0);
Kokkos::deep_copy(v_um_def_1, v_um_def_2);
Kokkos::deep_copy(v_um_def_1, v_um_2);
Kokkos::deep_copy(v_um_def_1, v_m_def_2);
Kokkos::deep_copy(v_um_def_1, v_m_2);
Kokkos::deep_copy(v_um_1, v_um_def_2);
Kokkos::deep_copy(v_um_1, v_um_2);
Kokkos::deep_copy(v_um_1, v_m_def_2);
Kokkos::deep_copy(v_um_1, v_m_2);
Kokkos::deep_copy(v_m_def_1, v_um_def_2);
Kokkos::deep_copy(v_m_def_1, v_um_2);
Kokkos::deep_copy(v_m_def_1, v_m_def_2);
Kokkos::deep_copy(v_m_def_1, v_m_2);
Kokkos::deep_copy(v_m_1, v_um_def_2);
Kokkos::deep_copy(v_m_1, v_um_2);
Kokkos::deep_copy(v_m_1, v_m_def_2);
Kokkos::deep_copy(v_m_1, v_m_2);
}
} // namespace Test