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/**
* Copyright 2024, XGBoost Contributors
*/
#include <gtest/gtest.h>
#include <thread> // for thread
#include <numeric> // for iota
#include <thrust/detail/sequence.inl> // for sequence
#include "../../../src/common/cuda_rt_utils.h" // for DrVersion
#include "../../../src/common/device_helpers.cuh" // for CachingThrustPolicy, PinnedMemory
#include "../../../src/common/device_vector.cuh"
#include "xgboost/global_config.h" // for GlobalConfigThreadLocalStore
#include "xgboost/windefs.h" // for xgboost_IS_WIN
namespace dh {
TEST(DeviceUVector, Basic) {
GlobalMemoryLogger().Clear();
std::int32_t verbosity{3};
std::swap(verbosity, xgboost::GlobalConfigThreadLocalStore::Get()->verbosity);
DeviceUVector<float> uvec;
uvec.resize(12);
auto peak = GlobalMemoryLogger().PeakMemory();
auto n_bytes = sizeof(decltype(uvec)::value_type) * uvec.size();
ASSERT_EQ(peak, n_bytes);
std::swap(verbosity, xgboost::GlobalConfigThreadLocalStore::Get()->verbosity);
}
#if defined(__linux__)
namespace {
class TestVirtualMem : public ::testing::TestWithParam<CUmemLocationType> {
public:
void Run() {
auto type = this->GetParam();
detail::GrowOnlyVirtualMemVec vec{type};
auto prop = xgboost::cudr::MakeAllocProp(type);
auto gran = xgboost::cudr::GetAllocGranularity(&prop);
ASSERT_GE(gran, 2);
auto data = vec.GetSpan<std::int32_t>(32); // should be smaller than granularity
ASSERT_EQ(data.size(), 32);
static_assert(std::is_same_v<typename decltype(data)::value_type, std::int32_t>);
std::vector<std::int32_t> h_data(data.size());
auto check = [&] {
for (std::size_t i = 0; i < h_data.size(); ++i) {
ASSERT_EQ(h_data[i], i);
}
};
auto fill = [&](std::int32_t n_orig, xgboost::common::Span<std::int32_t> data) {
if (type == CU_MEM_LOCATION_TYPE_DEVICE) {
thrust::sequence(dh::CachingThrustPolicy(), data.data() + n_orig, data.data() + data.size(),
n_orig);
dh::safe_cuda(cudaMemcpy(h_data.data(), data.data(), data.size_bytes(), cudaMemcpyDefault));
} else {
std::iota(data.data() + n_orig, data.data() + data.size(), n_orig);
std::copy_n(data.data(), data.size(), h_data.data());
}
};
fill(0, data);
check();
auto n_orig = data.size();
// Should be smaller than granularity, use already reserved.
data = vec.GetSpan<std::int32_t>(128);
h_data.resize(data.size());
fill(n_orig, data);
check();
if (128 < gran) {
ASSERT_EQ(vec.Capacity(), gran);
}
n_orig = data.size();
data = vec.GetSpan<std::int32_t>(gran / 2);
h_data.resize(data.size());
fill(n_orig, data);
check();
ASSERT_EQ(vec.Capacity(), gran * 2);
n_orig = data.size();
data = vec.GetSpan<std::int32_t>(gran);
h_data.resize(data.size());
fill(n_orig, data);
check();
ASSERT_EQ(vec.Capacity(), gran * 4);
}
};
} // anonymous namespace
TEST_P(TestVirtualMem, Alloc) { this->Run(); }
INSTANTIATE_TEST_SUITE_P(
Basic, TestVirtualMem,
::testing::Values(CU_MEM_LOCATION_TYPE_DEVICE, CU_MEM_LOCATION_TYPE_HOST_NUMA),
[](::testing::TestParamInfo<TestVirtualMem::ParamType> const& info) -> char const* {
auto type = info.param;
switch (type) {
case CU_MEM_LOCATION_TYPE_DEVICE:
return "Device";
case CU_MEM_LOCATION_TYPE_HOST_NUMA:
return "HostNuma";
default:
LOG(FATAL) << "unreachable";
}
return nullptr;
});
#endif // defined(__linux__)
TEST(TestVirtualMem, Version) {
std::int32_t major, minor;
xgboost::curt::DrVersion(&major, &minor);
LOG(INFO) << "Latest supported CUDA version by the driver:" << major << "." << minor;
PinnedMemory pinned;
#if defined(xgboost_IS_WIN)
ASSERT_FALSE(pinned.IsVm());
#else // defined(xgboost_IS_WIN)
if (major >= 12 && minor >= 5) {
ASSERT_TRUE(pinned.IsVm());
} else {
ASSERT_FALSE(pinned.IsVm());
}
#endif // defined(xgboost_IS_WIN)
}
TEST(AtomitFetch, Max) {
auto n_threads = std::thread::hardware_concurrency();
std::vector<std::thread> threads;
std::atomic<std::int64_t> n{0};
decltype(n)::value_type add = 64;
for (decltype(n_threads) t = 0; t < n_threads; ++t) {
threads.emplace_back([=, &n] {
for (decltype(add) i = 0; i < add; ++i) {
detail::AtomicFetchMax(n, static_cast<decltype(add)>(t + i));
}
});
}
for (auto& t : threads) {
t.join();
}
ASSERT_EQ(n, n_threads - 1 + add - 1); // 0-based indexing
}
} // namespace dh
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