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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 <gtest/gtest.h>
#include <Kokkos_Core.hpp>
#include <sstream>
#include <iostream>
namespace Test {
TEST(TEST_CATEGORY, view_remap) {
enum { N0 = 3, N1 = 2, N2 = 8, N3 = 9 };
#if defined(KOKKOS_ENABLE_CUDA)
#define EXECSPACE \
std::conditional_t<std::is_same_v<TEST_EXECSPACE, Kokkos::Cuda>, \
Kokkos::CudaHostPinnedSpace, TEST_EXECSPACE>
#elif defined(KOKKOS_ENABLE_HIP)
#define EXECSPACE \
std::conditional_t<std::is_same_v<TEST_EXECSPACE, Kokkos::HIP>, \
Kokkos::HIPHostPinnedSpace, TEST_EXECSPACE>
#elif defined(KOKKOS_ENABLE_SYCL)
#define EXECSPACE \
std::conditional_t<std::is_same_v<TEST_EXECSPACE, Kokkos::SYCL>, \
Kokkos::SYCLHostUSMSpace, TEST_EXECSPACE>
#elif defined(KOKKOS_ENABLE_OPENMPTARGET)
#define EXECSPACE Kokkos::HostSpace
#else
#define EXECSPACE TEST_EXECSPACE
#endif
using output_type =
Kokkos::View<double* [N1][N2][N3], Kokkos::LayoutRight, EXECSPACE>;
using input_type =
Kokkos::View<int** [N2][N3], Kokkos::LayoutLeft, EXECSPACE>;
using diff_type =
Kokkos::View<int* [N0][N2][N3], Kokkos::LayoutLeft, EXECSPACE>;
output_type output("output", N0);
input_type input("input", N0, N1);
diff_type diff("diff", N0);
Kokkos::fence();
int value = 0;
for (size_t i3 = 0; i3 < N3; ++i3)
for (size_t i2 = 0; i2 < N2; ++i2)
for (size_t i1 = 0; i1 < N1; ++i1)
for (size_t i0 = 0; i0 < N0; ++i0) {
input(i0, i1, i2, i3) = ++value;
}
Kokkos::fence();
// Kokkos::deep_copy( diff, input ); // Throw with incompatible shape.
Kokkos::deep_copy(output, input);
Kokkos::fence();
value = 0;
for (size_t i3 = 0; i3 < N3; ++i3)
for (size_t i2 = 0; i2 < N2; ++i2)
for (size_t i1 = 0; i1 < N1; ++i1)
for (size_t i0 = 0; i0 < N0; ++i0) {
++value;
ASSERT_EQ(value, ((int)output(i0, i1, i2, i3)));
}
}
TEST(TEST_CATEGORY, view_mirror_nonconst) {
Kokkos::View<int*, TEST_EXECSPACE> d_view("d_view", 10);
Kokkos::View<const int*, TEST_EXECSPACE> d_view_const = d_view;
auto h_view = Kokkos::create_mirror(d_view_const);
Kokkos::deep_copy(h_view, d_view_const);
auto h_view2 = Kokkos::create_mirror(Kokkos::HostSpace(), d_view_const);
Kokkos::deep_copy(h_view2, d_view_const);
}
template <typename DataType, typename... Extents>
void test_left_stride(Extents... extents) {
using view_type =
Kokkos::View<DataType, Kokkos::LayoutLeft, Kokkos::HostSpace>;
view_type view("view", extents...);
size_t expected_stride = 1;
size_t all_strides[view_type::rank + 1];
view.stride(all_strides);
for (size_t i = 0; i < view_type::rank; ++i) {
ASSERT_EQ(view.stride(i), expected_stride);
ASSERT_EQ(all_strides[i], expected_stride);
expected_stride *= view.extent(i);
}
ASSERT_EQ(all_strides[view_type::rank()], expected_stride);
#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
for (size_t i = view_type::rank(); i < size_t(8); ++i) {
ASSERT_EQ(view.stride(i), view.stride(view_type::rank() - 1) *
view.extent(view_type::rank() - 1));
}
#endif
}
template <typename DataType, typename... Extents>
void test_right_stride(Extents... extents) {
using view_type =
Kokkos::View<DataType, Kokkos::LayoutRight, Kokkos::HostSpace>;
view_type view("view", extents...);
size_t expected_stride = 1;
size_t all_strides[view_type::rank + 1];
view.stride(all_strides);
for (size_t ri = 0; ri < view_type::rank; ++ri) {
auto i = view_type::rank - 1 - ri;
ASSERT_EQ(view.stride(i), expected_stride);
ASSERT_EQ(all_strides[i], expected_stride);
expected_stride *= view.extent(i);
}
ASSERT_EQ(all_strides[view_type::rank()], expected_stride);
#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
for (size_t i = view_type::rank(); i < size_t(8); ++i) {
ASSERT_EQ(view.stride(i), size_t(1));
}
#endif
}
template <typename DataType, typename... Extents>
void test_stride_stride(Extents... extents) {
using view_type =
Kokkos::View<DataType, Kokkos::LayoutStride, Kokkos::HostSpace>;
auto test = [](auto view_org) {
view_type view(view_org);
size_t all_strides[view_type::rank() + 1];
view.stride(all_strides);
size_t max_stride = 0;
size_t max_stride_idx = 0;
for (size_t i = 0; i < view_type::rank(); ++i) {
ASSERT_EQ(view.stride(i), view_org.stride(i));
ASSERT_EQ(all_strides[i], view_org.stride(i));
if (view.stride(i) > max_stride) {
max_stride = view.stride(i);
max_stride_idx = i;
}
}
ASSERT_EQ(all_strides[view_type::rank()],
max_stride * view.extent(max_stride_idx));
#ifdef KOKKOS_ENABLE_DEPRECATED_CODE_4
for (size_t i = view_type::rank(); i < size_t(8); ++i) {
ASSERT_EQ(view.stride(i), size_t(0));
}
#endif
};
Kokkos::View<DataType, Kokkos::LayoutRight, Kokkos::HostSpace> view_right(
"view", extents...);
test(view_right);
Kokkos::View<DataType, Kokkos::LayoutRight, Kokkos::HostSpace> view_left(
"view", extents...);
test(view_left);
}
template <typename DataType, typename... Extents>
void test_stride(Extents... extents) {
test_right_stride<DataType>(extents...);
test_left_stride<DataType>(extents...);
test_stride_stride<DataType>(extents...);
}
TEST(TEST_CATEGORY, view_stride_method) {
test_stride<double[3]>();
test_stride<double*>(3);
test_stride<double[3][7][13]>();
test_stride<double***>(3, 7, 13);
// factorial(8) = 40320
test_stride<double[1][2][3][4][5][6][7][8]>();
test_stride<double********>(1, 2, 3, 4, 5, 6, 7, 8);
}
inline void test_anonymous_space() {
/* apparently TEST_EXECSPACE is sometimes a memory space. */
using ExecSpace = TEST_EXECSPACE::execution_space;
int host_array[10];
Kokkos::View<int[10], Kokkos::AnonymousSpace> host_anon_stat_view(host_array);
Kokkos::View<int*, Kokkos::AnonymousSpace> host_anon_dyn_view(host_array, 10);
Kokkos::View<int*, Kokkos::HostSpace> host_view("host_view", 10);
Kokkos::View<int*, Kokkos::AnonymousSpace> host_anon_assign_view = host_view;
for (int i = 0; i < 10; ++i) {
host_anon_stat_view(i) = host_anon_dyn_view(i) = 142;
host_anon_assign_view(i) = 142;
}
Kokkos::View<int**, Kokkos::LayoutRight, ExecSpace> d_view("d_view", 100, 10);
Kokkos::parallel_for(
Kokkos::RangePolicy<ExecSpace, int>(0, 100), KOKKOS_LAMBDA(int i) {
int* ptr = &(d_view(i, 0));
Kokkos::View<int[10], Kokkos::AnonymousSpace> d_anon_stat_view(ptr);
Kokkos::View<int*, Kokkos::AnonymousSpace> d_anon_dyn_view(ptr, 10);
auto sub = Kokkos::subview(d_view, i, Kokkos::ALL());
Kokkos::View<int*, Kokkos::AnonymousSpace> d_anon_assign_view = sub;
for (int j = 0; j < 10; ++j) {
d_anon_stat_view(j) = 50;
d_anon_assign_view(j) += 50;
d_anon_dyn_view(j) += 42;
}
});
Kokkos::fence();
}
TEST(TEST_CATEGORY, anonymous_space) { test_anonymous_space(); }
template <class ExecSpace>
struct TestViewOverloadResolution {
// Overload based on value_type and rank
static int foo(Kokkos::View<const double**, ExecSpace> /*a*/) { return 1; }
static int foo(Kokkos::View<const int**, ExecSpace> /*a*/) { return 2; }
static int foo(Kokkos::View<const double***, ExecSpace> /*a*/) { return 3; }
// Overload based on compile time dimensions
static int bar(Kokkos::View<double* [3], ExecSpace> /*a*/) { return 4; }
static int bar(Kokkos::View<double* [4], ExecSpace> /*a*/) { return 5; }
static void test_function_overload() {
Kokkos::View<double**, typename ExecSpace::execution_space::array_layout,
ExecSpace>
a("A", 10, 3);
int data_type_1 = foo(a);
int data_type_3 =
foo(Kokkos::View<const double**,
typename ExecSpace::execution_space::array_layout,
ExecSpace>(a));
Kokkos::View<double***, typename ExecSpace::execution_space::array_layout,
ExecSpace>
b("B", 10, 3, 4);
int data_type_2 = foo(b);
Kokkos::View<double* [3], typename ExecSpace::execution_space::array_layout,
ExecSpace>
c(a);
int static_extent = bar(c);
ASSERT_EQ(1, data_type_1);
ASSERT_EQ(3, data_type_2);
ASSERT_EQ(1, data_type_3);
ASSERT_EQ(4, static_extent);
}
};
TEST(TEST_CATEGORY, view_overload_resolution) {
TestViewOverloadResolution<TEST_EXECSPACE>::test_function_overload();
}
template <typename MemorySpace>
struct TestViewAllocationLargeRank {
using ViewType = Kokkos::View<char********, MemorySpace>;
KOKKOS_FUNCTION void operator()(int) const {
size_t idx = v.extent(0) - 1;
auto& lhs = v(idx, idx, idx, idx, idx, idx, idx, idx);
lhs = 42; // This is where it segfaulted
}
ViewType v;
};
// Orin and other Jetson devices come with smaller memory capacity, 8GB total
TEST(TEST_CATEGORY, view_allocation_large_rank) {
#ifdef KOKKOS_ARCH_AMPERE87
GTEST_SKIP() << "skipping for Jetson devices that have only 8GB memory";
#endif
using ExecutionSpace = typename TEST_EXECSPACE::execution_space;
using MemorySpace = typename TEST_EXECSPACE::memory_space;
constexpr int dim = 16;
using FunctorType = TestViewAllocationLargeRank<MemorySpace>;
typename FunctorType::ViewType v("v", dim, dim, dim, dim, dim, dim, dim, dim);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecutionSpace>(0, 1),
FunctorType{v});
typename FunctorType::ViewType v_single(v.data() + v.size() - 1, 1, 1, 1, 1,
1, 1, 1, 1);
auto result =
Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace{}, v_single);
ASSERT_EQ(result(0, 0, 0, 0, 0, 0, 0, 0), 42);
}
template <typename ExecSpace, typename ViewType>
struct TestViewShmemSizeOnDevice {
using ViewTestType = Kokkos::View<size_t, ExecSpace>;
TestViewShmemSizeOnDevice(size_t d1_, size_t d2_, size_t d3_)
: d1(d1_), d2(d2_), d3(d3_), shmemSize("shmemSize") {}
KOKKOS_FUNCTION void operator()(const int&) const {
auto shmem = ViewType::shmem_size(d1, d2, d3);
shmemSize() = shmem;
}
size_t d1, d2, d3;
ViewTestType shmemSize;
};
TEST(TEST_CATEGORY, view_shmem_size_on_device) {
using ExecSpace = typename TEST_EXECSPACE::execution_space;
using ViewType = Kokkos::View<int64_t***, ExecSpace>;
constexpr size_t d1 = 5;
constexpr size_t d2 = 7;
constexpr size_t d3 = 11;
TestViewShmemSizeOnDevice<ExecSpace, ViewType> testShmemSize(d1, d2, d3);
Kokkos::parallel_for(Kokkos::RangePolicy<ExecSpace>(0, 1), testShmemSize);
auto size = ViewType::shmem_size(d1, d2, d3);
auto shmemSizeHost = Kokkos::create_mirror_view_and_copy(
Kokkos::HostSpace(), testShmemSize.shmemSize);
ASSERT_EQ(size, shmemSizeHost());
}
} // namespace Test
#include <TestViewIsAssignable.hpp>
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