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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright Contributors to the Kokkos project
#include <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
#else
#include <Kokkos_Core.hpp>
#endif
#include <TestHPX_Category.hpp>
// These tests specifically check that work dispatched to independent instances
// is synchronized correctly on fences. A previous bug that this protects
// against is work being mistakenly dispatched to the default instance, but the
// fence fencing the independent instance. In that case these tests will fail.
namespace {
inline constexpr int n = 1 << 10;
TEST(hpx, independent_instances_synchronization_parallel_for_range_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(instance, 0, n);
Kokkos::parallel_for(
"parallel_for_range_policy", policy,
KOKKOS_LAMBDA(const auto i) { a[i] = i; });
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx, independent_instances_synchronization_parallel_for_mdrange_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::MDRangePolicy<Kokkos::Experimental::HPX, Kokkos::Rank<2>> policy(
instance, {{0, 0}}, {{n, 1}});
Kokkos::parallel_for(
"parallel_for_mdrange_policy", policy,
KOKKOS_LAMBDA(const auto i, const auto) { a[i] = i; });
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx, independent_instances_synchronization_parallel_for_team_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::TeamPolicy<Kokkos::Experimental::HPX> policy(instance, n, 1);
Kokkos::parallel_for(
"parallel_for_team_policy", policy, KOKKOS_LAMBDA(const auto &handle) {
a[handle.league_rank()] = handle.league_rank();
});
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx, independent_instances_synchronization_parallel_reduce_range_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::View<int, Kokkos::Experimental::HPX> b("b");
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(instance, 0, n);
Kokkos::parallel_reduce(
"parallel_reduce_range_policy", policy,
KOKKOS_LAMBDA(const int i, int &) { a[i] = i; }, b);
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx,
independent_instances_synchronization_parallel_reduce_mdrange_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::View<int, Kokkos::Experimental::HPX> b("b");
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::MDRangePolicy<Kokkos::Experimental::HPX, Kokkos::Rank<2>> policy(
instance, {{0, 0}}, {{n, 1}});
Kokkos::parallel_reduce(
"parallel_reduce_mdrange_policy", policy,
KOKKOS_LAMBDA(const int i, const int, int &) { a[i] = i; }, b);
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx, independent_instances_synchronization_parallel_reduce_team_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::View<int, Kokkos::Experimental::HPX> b("b");
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::TeamPolicy<Kokkos::Experimental::HPX> policy(instance, n, 1);
Kokkos::parallel_reduce(
"parallel_reduce_team_policy", policy,
KOKKOS_LAMBDA(const decltype(policy)::member_type &handle, int &) {
a[handle.league_rank()] = handle.league_rank();
},
b);
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
TEST(hpx, independent_instances_synchronization_parallel_scan_range_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
Kokkos::View<int *, Kokkos::Experimental::HPX> b("b", n);
Kokkos::Experimental::HPX instance{
Kokkos::Experimental::HPX::instance_mode::independent};
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(instance, 0, n);
Kokkos::parallel_scan(
"parallel_scan_range_policy", policy,
KOKKOS_LAMBDA(const int i, int &, bool final) {
if (!final) {
a[i] = i;
}
},
b);
instance.fence();
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a[i], i);
}
}
} // namespace
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