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#include <alpaka/alpaka.hpp>
#define CATCH_CONFIG_MAIN
#include <catch.hpp>
#include "FWCore/Utilities/interface/stringize.h"
#include "HeterogeneousCore/AlpakaInterface/interface/config.h"
#include "HeterogeneousCore/AlpakaInterface/interface/memory.h"
#include "HeterogeneousCore/AlpakaInterface/interface/workdivision.h"
// each test binary is built for a single Alpaka backend
using namespace ALPAKA_ACCELERATOR_NAMESPACE;
namespace {
constexpr size_t SIZE = 32;
void testDeviceSideError(Device const& device) {
auto queue = Queue(device);
auto buf_h = cms::alpakatools::make_host_buffer<int[]>(queue, SIZE);
auto buf_d = cms::alpakatools::make_device_buffer<int[]>(queue, SIZE);
alpaka::memset(queue, buf_h, 0);
alpaka::memcpy(queue, buf_d, buf_h);
// On the host device I don't know how to fabricate a device-side
// error for which the Alpaka API calls would then throw an
// exception. Therefore I just throw the std::runtime_error to
// keep the caller side the same for all backends. At least the
// test ensures the buffer destructors won't throw exceptions
// during the stack unwinding of the thrown runtime_error.
if constexpr (std::is_same_v<Device, alpaka::DevCpu>) {
throw std::runtime_error("assert");
} else {
auto div = cms::alpakatools::make_workdiv<Acc1D>(1, 1);
alpaka::exec<Acc1D>(
queue,
div,
[] ALPAKA_FN_ACC(Acc1D const& acc, int* data, size_t size) {
for (auto index : cms::alpakatools::uniform_elements(acc, size)) {
ALPAKA_ASSERT_ACC(data[index] != 0);
}
},
buf_d.data(),
SIZE);
alpaka::wait(queue);
}
}
} // namespace
TEST_CASE("Test alpaka buffers for the " EDM_STRINGIZE(ALPAKA_ACCELERATOR_NAMESPACE) " backend",
"[" EDM_STRINGIZE(ALPAKA_ACCELERATOR_NAMESPACE) "]") {
// get the list of devices on the current platform
auto const& devices = cms::alpakatools::devices<Platform>();
if (devices.empty()) {
FAIL("No devices available for the " EDM_STRINGIZE(ALPAKA_ACCELERATOR_NAMESPACE) " backend, "
"the test will be skipped.");
}
SECTION("Single device buffer") {
for (auto const& device : devices) {
auto queue = Queue(device);
auto buf = cms::alpakatools::make_device_buffer<int[]>(queue, SIZE);
alpaka::memset(queue, buf, 0);
alpaka::wait(queue);
}
}
SECTION("Single host buffer") {
for (auto const& device : devices) {
auto queue = Queue(device);
auto buf = cms::alpakatools::make_host_buffer<int[]>(queue, SIZE);
buf[0] = 0;
alpaka::wait(queue);
}
}
SECTION("Host and device buffers") {
for (auto const& device : devices) {
auto queue = Queue(device);
auto buf_h = cms::alpakatools::make_host_buffer<int[]>(queue, SIZE);
auto buf_d = cms::alpakatools::make_device_buffer<int[]>(queue, SIZE);
alpaka::memset(queue, buf_h, 0);
alpaka::memcpy(queue, buf_d, buf_h);
alpaka::wait(queue);
}
}
SECTION("Buffer destruction after a device-side error") {
for (auto const& device : devices) {
REQUIRE_THROWS_AS(testDeviceSideError(device), std::runtime_error);
}
}
}
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