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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 <Kokkos_Core.hpp>
#include <TestHIP_Category.hpp>
namespace Test {
struct TestAsyncLauncher {
size_t *m_flag;
size_t m_value;
KOKKOS_INLINE_FUNCTION
void operator()(const int /*i*/) const {
// and update flag
Kokkos::atomic_add(m_flag, m_value);
}
TestAsyncLauncher(size_t *flag, int value) : m_flag(flag), m_value(value) {}
void run() {
Kokkos::parallel_for(Kokkos::RangePolicy<TEST_EXECSPACE>(0, 1), *this);
}
};
TEST(hip, async_launcher) {
size_t *flag;
KOKKOS_IMPL_HIP_SAFE_CALL(hipMalloc(&flag, sizeof(size_t)));
KOKKOS_IMPL_HIP_SAFE_CALL(hipMemset(flag, 0, sizeof(size_t)));
// launch # of cycles * 1000 kernels w/ distinct values
auto space = Kokkos::HIP();
auto instance = space.impl_internal_space_instance();
size_t nkernels = 1000;
for (size_t i = 0; i < nkernels; ++i) {
TestAsyncLauncher(flag, i).run();
}
// and check results -- if any of the driver types were overwritten
// the sum below should fail
instance->fence();
size_t h_flag;
KOKKOS_IMPL_HIP_SAFE_CALL(
hipMemcpy(&h_flag, flag, sizeof(size_t), hipMemcpyHostToDevice));
ASSERT_EQ(h_flag, (nkernels * (nkernels - 1)) / 2);
KOKKOS_IMPL_HIP_SAFE_CALL(hipFree(flag));
}
} // namespace Test
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