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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project
#include <gtest/gtest.h>
#include <sstream>
#include <iostream>
#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
#else
#include <Kokkos_Core.hpp>
#endif
namespace Test {
template <class Space>
struct TestViewMappingSubview {
using ExecSpace = typename Space::execution_space;
using MemSpace = typename Space::memory_space;
using range = Kokkos::pair<int, int>;
enum { AN = 10 };
using AT = Kokkos::View<int*, ExecSpace>;
using ACT = Kokkos::View<const int*, ExecSpace>;
using AS = Kokkos::Subview<AT, range>;
enum { BN0 = 10, BN1 = 11, BN2 = 12 };
using BT = Kokkos::View<int***, ExecSpace>;
using BS = Kokkos::Subview<BT, range, range, range>;
enum { CN0 = 10, CN1 = 11, CN2 = 12 };
using CT = Kokkos::View<int*** [13][14], ExecSpace>;
// changing CS to CTS here because when compiling with nvshmem, there is a
// define for CS that makes this fail...
using CTS = Kokkos::Subview<CT, range, range, range, int, int>;
enum { DN0 = 10, DN1 = 11, DN2 = 12, DN3 = 13, DN4 = 14 };
using DT = Kokkos::View<int*** [DN3][DN4], ExecSpace>;
using DS = Kokkos::Subview<DT, int, range, range, range, int>;
using DLT = Kokkos::View<int*** [13][14], Kokkos::LayoutLeft, ExecSpace>;
using DLS1 = Kokkos::Subview<DLT, range, int, int, int, int>;
static_assert(
DLS1::rank == 1 &&
std::is_same_v<typename DLS1::array_layout, Kokkos::LayoutLeft>,
"Subview layout error for rank 1 subview of left-most range of "
"LayoutLeft");
using DRT = Kokkos::View<int*** [13][14], Kokkos::LayoutRight, ExecSpace>;
using DRS1 = Kokkos::Subview<DRT, int, int, int, int, range>;
static_assert(
DRS1::rank == 1 &&
std::is_same_v<typename DRS1::array_layout, Kokkos::LayoutRight>,
"Subview layout error for rank 1 subview of right-most range of "
"LayoutRight");
AT Aa;
AS Ab;
ACT Ac;
BT Ba;
BS Bb;
CT Ca;
CTS Cb;
DT Da;
DS Db;
TestViewMappingSubview()
: Aa("Aa", AN),
Ab(Kokkos::subview(Aa, std::pair<int, int>(1, AN - 1))),
Ac(Aa, std::pair<int, int>(1, AN - 1)),
Ba("Ba", BN0, BN1, BN2),
Bb(Kokkos::subview(Ba, std::pair<int, int>(1, BN0 - 1),
std::pair<int, int>(1, BN1 - 1),
std::pair<int, int>(1, BN2 - 1))),
Ca("Ca", CN0, CN1, CN2),
Cb(Kokkos::subview(Ca, std::pair<int, int>(1, CN0 - 1),
std::pair<int, int>(1, CN1 - 1),
std::pair<int, int>(1, CN2 - 1), 1, 2)),
Da("Da", DN0, DN1, DN2),
Db(Kokkos::subview(Da, 1, std::pair<int, int>(1, DN1 - 1),
std::pair<int, int>(1, DN2 - 1),
std::pair<int, int>(1, DN3 - 1), 2)) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int, long& error_count) const {
auto Ad = Kokkos::subview(Aa, Kokkos::pair<int, int>(1, AN - 1));
for (int i = 1; i < AN - 1; ++i)
if (&Aa[i] != &Ab[i - 1]) ++error_count;
for (int i = 1; i < AN - 1; ++i)
if (&Aa[i] != &Ac[i - 1]) ++error_count;
for (int i = 1; i < AN - 1; ++i)
if (&Aa[i] != &Ad[i - 1]) ++error_count;
for (int i2 = 1; i2 < BN2 - 1; ++i2)
for (int i1 = 1; i1 < BN1 - 1; ++i1)
for (int i0 = 1; i0 < BN0 - 1; ++i0) {
if (&Ba(i0, i1, i2) != &Bb(i0 - 1, i1 - 1, i2 - 1)) ++error_count;
}
for (int i2 = 1; i2 < CN2 - 1; ++i2)
for (int i1 = 1; i1 < CN1 - 1; ++i1)
for (int i0 = 1; i0 < CN0 - 1; ++i0) {
if (&Ca(i0, i1, i2, 1, 2) != &Cb(i0 - 1, i1 - 1, i2 - 1))
++error_count;
}
for (int i2 = 1; i2 < DN3 - 1; ++i2)
for (int i1 = 1; i1 < DN2 - 1; ++i1)
for (int i0 = 1; i0 < DN1 - 1; ++i0) {
if (&Da(1, i0, i1, i2, 2) != &Db(i0 - 1, i1 - 1, i2 - 1))
++error_count;
}
}
void run() {
TestViewMappingSubview<ExecSpace> self;
ASSERT_EQ(Aa.extent(0), AN);
ASSERT_EQ(Ab.extent(0), (size_t)AN - 2);
ASSERT_EQ(Ac.extent(0), (size_t)AN - 2);
ASSERT_EQ(Ba.extent(0), BN0);
ASSERT_EQ(Ba.extent(1), BN1);
ASSERT_EQ(Ba.extent(2), BN2);
ASSERT_EQ(Bb.extent(0), (size_t)BN0 - 2);
ASSERT_EQ(Bb.extent(1), (size_t)BN1 - 2);
ASSERT_EQ(Bb.extent(2), (size_t)BN2 - 2);
ASSERT_EQ(Ca.extent(0), CN0);
ASSERT_EQ(Ca.extent(1), CN1);
ASSERT_EQ(Ca.extent(2), CN2);
ASSERT_EQ(Ca.extent(3), (size_t)13);
ASSERT_EQ(Ca.extent(4), (size_t)14);
ASSERT_EQ(Cb.extent(0), (size_t)CN0 - 2);
ASSERT_EQ(Cb.extent(1), (size_t)CN1 - 2);
ASSERT_EQ(Cb.extent(2), (size_t)CN2 - 2);
ASSERT_EQ(Da.extent(0), DN0);
ASSERT_EQ(Da.extent(1), DN1);
ASSERT_EQ(Da.extent(2), DN2);
ASSERT_EQ(Da.extent(3), DN3);
ASSERT_EQ(Da.extent(4), DN4);
ASSERT_EQ(Db.extent(0), (size_t)DN1 - 2);
ASSERT_EQ(Db.extent(1), (size_t)DN2 - 2);
ASSERT_EQ(Db.extent(2), (size_t)DN3 - 2);
ASSERT_EQ(Da.stride(1), Db.stride(0));
ASSERT_EQ(Da.stride(2), Db.stride(1));
ASSERT_EQ(Da.stride(3), Db.stride(2));
#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
KOKKOS_IMPL_DISABLE_DEPRECATED_WARNINGS_PUSH()
ASSERT_EQ(Da.stride_1(), Db.stride_0()); // NOLINT
ASSERT_EQ(Da.stride_2(), Db.stride_1()); // NOLINT
ASSERT_EQ(Da.stride_3(), Db.stride_2()); // NOLINT
KOKKOS_IMPL_DISABLE_DEPRECATED_WARNINGS_POP()
#endif
long error_count = -1;
Kokkos::parallel_reduce(Kokkos::RangePolicy<ExecSpace>(0, 1), *this,
error_count);
ASSERT_EQ(error_count, 0);
}
};
TEST(TEST_CATEGORY, view_mapping_subview) {
TestViewMappingSubview<TEST_EXECSPACE> f;
f.run();
}
} // namespace Test
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