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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 <Kokkos_Macros.hpp>
#ifdef KOKKOS_ENABLE_EXPERIMENTAL_CXX20_MODULES
import kokkos.core;
#else
#include <Kokkos_Core.hpp>
#endif
#ifdef KOKKOS_ENABLE_DEPRECATION_WARNINGS
KOKKOS_IMPL_DISABLE_DEPRECATED_WARNINGS_PUSH()
#endif
// 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, in_parallel_for_range_policy) {
Kokkos::View<bool *, Kokkos::Experimental::HPX> a("a", n);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(0, n);
Kokkos::parallel_for(
"parallel_for_range_policy", policy, KOKKOS_LAMBDA(const int i) {
a(i) = Kokkos::Experimental::HPX::in_parallel();
});
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
for (int i = 0; i < n; ++i) {
ASSERT_TRUE(a(i));
}
}
TEST(hpx, in_parallel_for_mdrange_policy) {
Kokkos::View<bool *, Kokkos::Experimental::HPX> a("a", n);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::MDRangePolicy<Kokkos::Experimental::HPX, Kokkos::Rank<2>> policy(
{0, 0}, {n, 1});
Kokkos::parallel_for(
"parallel_for_mdrange_policy", policy,
KOKKOS_LAMBDA(const int i, const int) {
a(i) = Kokkos::Experimental::HPX::in_parallel();
});
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
for (int i = 0; i < n; ++i) {
ASSERT_TRUE(a(i));
}
}
TEST(hpx, in_parallel_for_team_policy) {
Kokkos::View<bool *, Kokkos::Experimental::HPX> a("a", n);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::TeamPolicy<Kokkos::Experimental::HPX> policy(n, 1);
using member_type = decltype(policy)::member_type;
Kokkos::parallel_for(
"parallel_for_team_policy", policy,
KOKKOS_LAMBDA(const member_type &handle) {
a(handle.league_rank()) = Kokkos::Experimental::HPX::in_parallel();
});
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
for (int i = 0; i < n; ++i) {
ASSERT_TRUE(a(i));
}
}
TEST(hpx, in_parallel_reduce_range_policy) {
Kokkos::View<int, Kokkos::Experimental::HPX> a("a");
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(0, n);
Kokkos::parallel_reduce(
"parallel_reduce_range_policy", policy,
KOKKOS_LAMBDA(const int, int &x) {
if (!Kokkos::Experimental::HPX::in_parallel()) {
++x;
}
},
a);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
ASSERT_EQ(a(), 0);
}
TEST(hpx, in_parallel_reduce_mdrange_policy) {
Kokkos::View<int, Kokkos::Experimental::HPX> a("a");
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::MDRangePolicy<Kokkos::Experimental::HPX, Kokkos::Rank<2>> policy(
{0, 0}, {n, 1});
Kokkos::parallel_reduce(
"parallel_reduce_mdrange_policy", policy,
KOKKOS_LAMBDA(const int, const int, int &x) {
if (!Kokkos::Experimental::HPX::in_parallel()) {
++x;
}
},
a);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
ASSERT_EQ(a(), 0);
}
TEST(hpx, in_parallel_reduce_team_policy) {
Kokkos::View<int, Kokkos::Experimental::HPX> a("a");
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::TeamPolicy<Kokkos::Experimental::HPX> policy(n, 1);
using member_type = decltype(policy)::member_type;
Kokkos::parallel_reduce(
"parallel_reduce_team_policy", policy,
KOKKOS_LAMBDA(const member_type &, int &x) {
if (!Kokkos::Experimental::HPX::in_parallel()) {
++x;
}
},
a);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
ASSERT_EQ(a(), 0);
}
TEST(hpx, in_parallel_scan_range_policy) {
Kokkos::View<int *, Kokkos::Experimental::HPX> a("a", n);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::RangePolicy<Kokkos::Experimental::HPX> policy(0, n);
Kokkos::parallel_scan(
"parallel_scan_range_policy", policy,
KOKKOS_LAMBDA(const int, int &x, bool) {
if (!Kokkos::Experimental::HPX::in_parallel()) {
++x;
}
},
a);
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
Kokkos::fence();
ASSERT_FALSE(Kokkos::Experimental::HPX::in_parallel());
for (int i = 0; i < n; ++i) {
ASSERT_EQ(a(i), 0);
}
}
} // namespace
#ifdef KOKKOS_ENABLE_DEPRECATION_WARNINGS
KOKKOS_IMPL_DISABLE_DEPRECATED_WARNINGS_POP()
#endif
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