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/**
* Copyright 2024, XGBoost Contributors
*/
#if defined(__linux__)
#include <gtest/gtest.h>
#include <thrust/equal.h> // for equal
#include <thrust/fill.h> // for fill_n
#include <thrust/iterator/constant_iterator.h> // for make_constant_iterator
#include <thrust/sequence.h> // for sequence
#include "../../../src/common/ref_resource_view.cuh"
#include "../helpers.h" // for MakeCUDACtx
namespace xgboost::common {
class TestCudaGrowOnly : public ::testing::TestWithParam<std::size_t> {
public:
void TestGrow(std::size_t m, std::size_t n) {
auto ctx = MakeCUDACtx(0);
ctx.CUDACtx()->Stream().Sync();
auto ref = MakeCudaGrowOnly<double>(m);
ASSERT_EQ(ref.size_bytes(), m * sizeof(double));
thrust::sequence(ctx.CUDACtx()->CTP(), ref.begin(), ref.end(), 0.0);
auto res = std::dynamic_pointer_cast<common::CudaGrowOnlyResource>(ref.Resource());
CHECK(res);
res->Resize(n * sizeof(double));
auto ref1 = RefResourceView<double>(res->DataAs<double>(), res->Size() / sizeof(double),
ref.Resource());
ASSERT_EQ(res->Size(), n * sizeof(double));
ASSERT_EQ(ref1.size(), n);
thrust::sequence(ctx.CUDACtx()->CTP(), ref1.begin(), ref1.end(), static_cast<double>(0.0));
std::vector<double> h_vec(ref1.size());
dh::safe_cuda(cudaMemcpyAsync(h_vec.data(), ref1.data(), ref1.size_bytes(), cudaMemcpyDefault));
for (std::size_t i = 0; i < h_vec.size(); ++i) {
ASSERT_EQ(h_vec[i], i);
}
}
void Run(std::size_t n) { this->TestGrow(1024, n); }
};
TEST_P(TestCudaGrowOnly, Resize) { this->Run(this->GetParam()); }
INSTANTIATE_TEST_SUITE_P(RefResourceView, TestCudaGrowOnly, ::testing::Values(1 << 20, 1 << 21));
} // namespace xgboost::common
#endif // defined(__linux__)
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