opm-simulators/tests/gpuistl/test_GpuBuffer.cu
2024-08-22 15:32:21 +02:00

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/*
Copyright 2024 SINTEF AS
This file is part of the Open Porous Media project (OPM).
OPM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OPM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OPM. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#define BOOST_TEST_MODULE TestGpuBuffer
#include <boost/test/unit_test.hpp>
#include <cuda_runtime.h>
#include <opm/simulators/linalg/gpuistl/GpuBuffer.hpp>
#include <opm/simulators/linalg/gpuistl/GpuView.hpp>
#include <opm/simulators/linalg/gpuistl/detail/cuda_safe_call.hpp>
#include <array>
#include <algorithm>
#include <type_traits>
BOOST_AUTO_TEST_CASE(TestMakeView)
{
// test that we can create buffers and make views of the buffers using the pointer constructor
auto buf = std::vector<int>({1, 2, 3, 4, 5, 6});
const auto gpubuf = ::Opm::gpuistl::GpuBuffer<int>(buf);
auto gpuview = ::Opm::gpuistl::GpuView<int>(buf.data(), buf.size());
bool gpuBufCreatedView = std::is_same<::Opm::gpuistl::GpuView<int>, decltype(gpuview)>::value;
BOOST_CHECK(gpuBufCreatedView);
// test that we can make views of buffers by using the GpuBuffer constructor
auto gpuview2 = ::Opm::gpuistl::make_view(gpubuf);
bool gpuBufCreatedView2 = std::is_same<::Opm::gpuistl::GpuView<const int>, decltype(gpuview2)>::value;
BOOST_CHECK(gpuBufCreatedView2);
// check that we retrieve the same values when pulling the data back to the cpu as a vector
auto gpuBufOnCpu = gpubuf.asStdVector();
BOOST_CHECK_EQUAL_COLLECTIONS(gpuBufOnCpu.begin(), gpuBufOnCpu.end(), buf.begin(), buf.end());
}