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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
#include <cstdio>
#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>
#include <Kokkos_DynRankView.hpp>
#include <type_traits>
#include <typeinfo>
namespace Test {
namespace {
template <typename ExecSpace>
struct TestViewCtorProp_EmbeddedDim {
using ViewIntType = typename Kokkos::View<int**, ExecSpace>;
using ViewDoubleType = typename Kokkos::View<double*, ExecSpace>;
using DynRankViewIntType = typename Kokkos::DynRankView<int, ExecSpace>;
using DynRankViewDoubleType = typename Kokkos::DynRankView<double, ExecSpace>;
// Cuda 7.0 has issues with using a lambda in parallel_for to initialize the
// view - replace with this functor
template <class ViewType>
struct Functor {
ViewType v;
Functor(const ViewType& v_) : v(v_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const { v(i) = i; }
};
static void test_vcpt(const size_t N0, const size_t N1) {
// Create two views to test
{
using VIT = typename TestViewCtorProp_EmbeddedDim::ViewIntType;
using VDT = typename TestViewCtorProp_EmbeddedDim::ViewDoubleType;
VIT vi1("vi1", N0, N1);
VDT vd1("vd1", N0);
// TEST: Test for common type between two views, one with type double,
// other with type int Deduce common value_type and construct a view with
// that type
{
// Two views
auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1, vd1);
using CommonViewValueType =
typename decltype(view_alloc_arg)::value_type;
using CVT = typename Kokkos::View<CommonViewValueType*, ExecSpace>;
using HostCVT = typename CVT::HostMirror;
// Construct View using the common type; for case of specialization, an
// 'embedded_dim' would be stored by view_alloc_arg
CVT cv1(Kokkos::view_alloc("cv1", view_alloc_arg), N0 * N1);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace>(0, N0 * N1),
Functor<CVT>(cv1));
HostCVT hcv1 = Kokkos::create_mirror_view(cv1);
Kokkos::deep_copy(hcv1, cv1);
ASSERT_EQ((std::is_same_v<CommonViewValueType, double>), true);
#if 0
// debug output
for ( size_t i = 0; i < N0*N1; ++i ) {
printf(" Output check: hcv1(%zu) = %lf\n ", i, hcv1(i) );
}
printf( " Common value type view: %s \n", typeid( CVT() ).name() );
printf( " Common value type: %s \n", typeid( CommonViewValueType() ).name() );
if ( std::is_same_v< CommonViewValueType, double > == true ) {
printf("Proper common value_type\n");
}
else {
printf("WRONG common value_type\n");
}
// end debug output
#endif
}
{
// Single view
auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1);
using CommonViewValueType =
typename decltype(view_alloc_arg)::value_type;
using CVT = typename Kokkos::View<CommonViewValueType*, ExecSpace>;
using HostCVT = typename CVT::HostMirror;
// Construct View using the common type; for case of specialization, an
// 'embedded_dim' would be stored by view_alloc_arg
CVT cv1(Kokkos::view_alloc("cv1", view_alloc_arg), N0 * N1);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace>(0, N0 * N1),
Functor<CVT>(cv1));
HostCVT hcv1 = Kokkos::create_mirror_view(cv1);
Kokkos::deep_copy(hcv1, cv1);
ASSERT_EQ((std::is_same_v<CommonViewValueType, int>), true);
}
}
// Create two dynamic rank views to test
{
using VIT = typename TestViewCtorProp_EmbeddedDim::DynRankViewIntType;
using VDT = typename TestViewCtorProp_EmbeddedDim::DynRankViewDoubleType;
VIT vi1("vi1", N0, N1);
VDT vd1("vd1", N0);
// TEST: Test for common type between two views, one with type double,
// other with type int Deduce common value_type and construct a view with
// that type
{
// Two views
auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1, vd1);
using CommonViewValueType =
typename decltype(view_alloc_arg)::value_type;
using CVT = typename Kokkos::View<CommonViewValueType*, ExecSpace>;
using HostCVT = typename CVT::HostMirror;
// Construct View using the common type; for case of specialization, an
// 'embedded_dim' would be stored by view_alloc_arg
CVT cv1(Kokkos::view_alloc("cv1", view_alloc_arg), N0 * N1);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace>(0, N0 * N1),
Functor<CVT>(cv1));
HostCVT hcv1 = Kokkos::create_mirror_view(cv1);
Kokkos::deep_copy(hcv1, cv1);
ASSERT_EQ((std::is_same_v<CommonViewValueType, double>), true);
}
{
// Single views
auto view_alloc_arg = Kokkos::common_view_alloc_prop(vi1);
using CommonViewValueType =
typename decltype(view_alloc_arg)::value_type;
using CVT = typename Kokkos::View<CommonViewValueType*, ExecSpace>;
using HostCVT = typename CVT::HostMirror;
// Construct View using the common type; for case of specialization, an
// 'embedded_dim' would be stored by view_alloc_arg
CVT cv1(Kokkos::view_alloc("cv1", view_alloc_arg), N0 * N1);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace>(0, N0 * N1),
Functor<CVT>(cv1));
HostCVT hcv1 = Kokkos::create_mirror_view(cv1);
Kokkos::deep_copy(hcv1, cv1);
ASSERT_EQ((std::is_same_v<CommonViewValueType, int>), true);
}
}
} // end test_vcpt
}; // end struct
} // namespace
TEST(TEST_CATEGORY, viewctorprop_embedded_dim) {
TestViewCtorProp_EmbeddedDim<TEST_EXECSPACE>::test_vcpt(2, 3);
}
} // namespace Test
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