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// ----------------------------------------------------------------------------
// - Open3D: www.open3d.org -
// ----------------------------------------------------------------------------
// The MIT License (MIT)
//
// Copyright (c) 2018-2021 www.open3d.org
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
// ----------------------------------------------------------------------------
#ifdef BUILD_CUDA_MODULE
#include "open3d/core/CUDAUtils.h"
#include <thread>
#include <vector>
#include "tests/Tests.h"
namespace open3d {
namespace tests {
TEST(CUDAUtils, InitState) {
const int device_count = core::cuda::DeviceCount();
const core::CUDAState& cuda_state = core::CUDAState::GetInstance();
utility::LogInfo("Number of CUDA devices: {}", device_count);
for (int i = 0; i < device_count; ++i) {
for (int j = 0; j < device_count; ++j) {
utility::LogInfo("P2PEnabled {}->{}: {}", i, j,
cuda_state.IsP2PEnabled(i, j));
}
}
}
void CheckScopedStreamManually() {
int current_device = core::cuda::GetDevice();
ASSERT_EQ(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
cudaStream_t stream;
OPEN3D_CUDA_CHECK(cudaStreamCreate(&stream));
{
core::CUDAScopedStream scoped_stream(stream);
ASSERT_EQ(core::cuda::GetStream(), stream);
ASSERT_NE(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
}
OPEN3D_CUDA_CHECK(cudaStreamDestroy(stream));
ASSERT_EQ(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
}
void CheckScopedStreamAutomatically() {
int current_device = core::cuda::GetDevice();
ASSERT_EQ(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
{
core::CUDAScopedStream scoped_stream(
core::CUDAScopedStream::CreateNewStream);
ASSERT_NE(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
}
ASSERT_EQ(core::cuda::GetStream(), core::cuda::GetDefaultStream());
ASSERT_EQ(core::cuda::GetDevice(), current_device);
}
void CheckScopedStreamMultiThreaded(const std::function<void()>& func) {
std::vector<std::thread> threads;
// NVCC does not like capturing const int by reference on Windows, use int.
int kIterations = 100000;
int kThreads = 8;
for (int i = 0; i < kThreads; ++i) {
threads.emplace_back([&kIterations, &func]() {
utility::LogDebug("Starting thread with ID {}",
std::this_thread::get_id());
for (int i = 0; i < kIterations; ++i) {
func();
}
});
}
for (auto& thread : threads) {
if (thread.joinable()) {
utility::LogDebug("Joining thread with ID {}", thread.get_id());
thread.join();
}
}
}
TEST(CUDAUtils, ScopedStreamManually) { CheckScopedStreamManually(); }
TEST(CUDAUtils, ScopedStreamManuallyMultiThreaded) {
CheckScopedStreamMultiThreaded(&CheckScopedStreamManually);
}
TEST(CUDAUtils, ScopedStreamAutomatically) { CheckScopedStreamAutomatically(); }
TEST(CUDAUtils, ScopedStreamAutomaticallyMultiThreaded) {
CheckScopedStreamMultiThreaded(&CheckScopedStreamAutomatically);
}
} // namespace tests
} // namespace open3d
#endif
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