mirror of
https://github.com/OPM/opm-simulators.git
synced 2024-11-29 04:23:48 -06:00
297 lines
9.8 KiB
C++
297 lines
9.8 KiB
C++
/*
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Copyright 2022-2023 SINTEF AS
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#define BOOST_TEST_MODULE TestGpuVector
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#include <boost/test/unit_test.hpp>
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#include <cuda_runtime.h>
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#include <dune/common/fvector.hh>
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#include <dune/istl/bvector.hh>
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#include <opm/simulators/linalg/gpuistl/GpuVector.hpp>
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#include <opm/simulators/linalg/gpuistl/detail/gpu_safe_call.hpp>
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#include <random>
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BOOST_AUTO_TEST_CASE(TestDocumentedUsage)
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{
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auto someDataOnCPU = std::vector<double>({1.0, 2.0, 42.0, 59.9451743, 10.7132692});
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auto dataOnGPU = ::Opm::gpuistl::GpuVector<double>(someDataOnCPU);
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// Multiply by 4.0:
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dataOnGPU *= 4.0;
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// Get data back on CPU in another vector:
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auto stdVectorOnCPU = dataOnGPU.asStdVector();
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std::vector<double> correctVector(someDataOnCPU.size());
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std::transform(someDataOnCPU.begin(), someDataOnCPU.end(), correctVector.begin(), [](double x) { return 4 * x; });
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BOOST_CHECK_EQUAL_COLLECTIONS(
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stdVectorOnCPU.begin(), stdVectorOnCPU.end(), correctVector.begin(), correctVector.end());
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}
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BOOST_AUTO_TEST_CASE(TestConstructionSize)
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{
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const int numberOfElements = 1234;
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(numberOfElements);
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BOOST_CHECK_EQUAL(numberOfElements, vectorOnGPU.dim());
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}
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BOOST_AUTO_TEST_CASE(TestCopyFromHostConstructor)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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BOOST_CHECK_EQUAL(data.size(), vectorOnGPU.dim());
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std::vector<double> buffer(data.size(), 0.0);
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vectorOnGPU.copyToHost(buffer.data(), buffer.size());
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BOOST_CHECK_EQUAL_COLLECTIONS(buffer.begin(), buffer.end(), data.begin(), data.end());
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}
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BOOST_AUTO_TEST_CASE(TestCopyFromHostFunction)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.size());
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BOOST_CHECK_EQUAL(data.size(), vectorOnGPU.dim());
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vectorOnGPU.copyFromHost(data.data(), data.size());
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std::vector<double> buffer(data.size(), 0.0);
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vectorOnGPU.copyToHost(buffer.data(), buffer.size());
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BOOST_CHECK_EQUAL_COLLECTIONS(buffer.begin(), buffer.end(), data.begin(), data.end());
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}
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BOOST_AUTO_TEST_CASE(TestCopyFromBvector)
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{
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auto blockVector = Dune::BlockVector<Dune::FieldVector<double, 2>> {{{42, 43}, {44, 45}, {46, 47}}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(blockVector.dim());
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vectorOnGPU.copyFromHost(blockVector);
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std::vector<double> buffer(vectorOnGPU.dim());
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vectorOnGPU.copyToHost(buffer.data(), buffer.size());
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BOOST_CHECK_EQUAL_COLLECTIONS(
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buffer.begin(), buffer.end(), &blockVector[0][0], &blockVector[0][0] + blockVector.dim());
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}
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BOOST_AUTO_TEST_CASE(TestCopyToBvector)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7, 8, 9}};
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auto blockVector = Dune::BlockVector<Dune::FieldVector<double, 3>>(3);
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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vectorOnGPU.copyToHost(blockVector);
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BOOST_CHECK_EQUAL_COLLECTIONS(data.begin(), data.end(), &blockVector[0][0], &blockVector[0][0] + blockVector.dim());
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}
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BOOST_AUTO_TEST_CASE(TestDataPointer)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7, 8, 9}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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std::vector<double> buffer(data.size(), 0.0);
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OPM_GPU_SAFE_CALL(cudaMemcpy(buffer.data(), vectorOnGPU.data(), sizeof(double) * data.size(), cudaMemcpyDeviceToHost));
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BOOST_CHECK_EQUAL_COLLECTIONS(data.begin(), data.end(), buffer.begin(), buffer.end());
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}
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BOOST_AUTO_TEST_CASE(TestCopyScalarMultiply)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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BOOST_CHECK_EQUAL(data.size(), vectorOnGPU.dim());
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const double scalar = 42.25;
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vectorOnGPU *= scalar;
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std::vector<double> buffer(data.size(), 0.0);
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vectorOnGPU.copyToHost(buffer.data(), buffer.size());
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for (size_t i = 0; i < buffer.size(); ++i) {
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BOOST_CHECK_EQUAL(buffer[i], scalar * data[i]);
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}
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}
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BOOST_AUTO_TEST_CASE(TestTwoNorm)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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auto twoNorm = vectorOnGPU.two_norm();
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double correctAnswer = 0.0;
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for (double d : data) {
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correctAnswer += d * d;
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}
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correctAnswer = std::sqrt(correctAnswer);
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BOOST_CHECK_EQUAL(correctAnswer, twoNorm);
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}
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BOOST_AUTO_TEST_CASE(TestDot)
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{
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std::vector<double> dataA {{1, 2, 3, 4, 5, 6, 7}};
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std::vector<double> dataB {{8, 9, 10, 11, 12, 13, 14}};
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auto vectorOnGPUA = Opm::gpuistl::GpuVector<double>(dataA.data(), dataA.size());
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auto vectorOnGPUB = Opm::gpuistl::GpuVector<double>(dataB.data(), dataB.size());
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auto dot = vectorOnGPUA.dot(vectorOnGPUB);
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double correctAnswer = 0.0;
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for (size_t i = 0; i < dataA.size(); ++i) {
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correctAnswer += dataA[i] * dataB[i];
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}
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correctAnswer = correctAnswer;
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BOOST_CHECK_EQUAL(correctAnswer, dot);
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}
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BOOST_AUTO_TEST_CASE(Assigment)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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vectorOnGPU = 10.0;
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vectorOnGPU.copyToHost(data.data(), data.size());
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for (double x : data) {
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BOOST_CHECK_EQUAL(10.0, x);
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}
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}
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BOOST_AUTO_TEST_CASE(CopyAssignment)
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{
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std::vector<double> data {{1, 2, 3, 4, 5, 6, 7}};
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auto vectorOnGPU = Opm::gpuistl::GpuVector<double>(data.data(), data.size());
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vectorOnGPU.copyToHost(data.data(), data.size());
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auto vectorOnGPUB = Opm::gpuistl::GpuVector<double>(data.size());
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vectorOnGPUB = 4.0;
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vectorOnGPUB = vectorOnGPU;
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std::vector<double> output(data.size());
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vectorOnGPUB.copyToHost(output.data(), output.size());
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BOOST_CHECK_EQUAL_COLLECTIONS(output.begin(), output.end(), data.begin(), data.end());
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}
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BOOST_AUTO_TEST_CASE(RandomVectors)
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{
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using GVector = Opm::gpuistl::GpuVector<double>;
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std::srand(0);
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std::mt19937 generator;
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std::uniform_real_distribution<double> distribution(-100.0, 100.0);
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std::uniform_real_distribution<double> distribution01(.0, 1.0);
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const size_t N = 1000;
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const size_t retries = 100;
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for (size_t retry = 0; retry < retries; ++retry) {
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std::vector<double> a(N);
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std::vector<double> b(N);
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for (size_t i = 0; i < N; ++i) {
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a[i] = distribution(generator);
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b[i] = distribution(generator);
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}
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auto aGPU = GVector(a);
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auto bGPU = GVector(b);
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aGPU += bGPU;
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auto aOutputPlus = aGPU.asStdVector();
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for (size_t i = 0; i < N; ++i) {
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BOOST_CHECK_EQUAL(aOutputPlus[i], a[i] + b[i]);
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}
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aGPU = GVector(a);
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aGPU -= bGPU;
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auto aOutputMinus = aGPU.asStdVector();
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for (size_t i = 0; i < N; ++i) {
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BOOST_CHECK_EQUAL(aOutputMinus[i], a[i] - b[i]);
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}
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aGPU = GVector(a);
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auto scalar = distribution(generator);
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aGPU *= scalar;
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auto aOutputScalar = aGPU.asStdVector();
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for (size_t i = 0; i < N; ++i) {
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BOOST_CHECK_EQUAL(aOutputScalar[i], scalar * a[i]);
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}
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aGPU = GVector(a);
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aGPU.axpy(scalar, bGPU);
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auto aOutputSaxypy = aGPU.asStdVector();
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for (size_t i = 0; i < N; ++i) {
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BOOST_CHECK_CLOSE(aOutputSaxypy[i], a[i] + scalar * b[i], 1e-10);
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}
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aGPU = GVector(a);
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auto dotted = aGPU.dot(bGPU);
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double correct = 0.0;
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for (size_t i = 0; i < N; ++i) {
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correct += a[i] * b[i];
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}
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BOOST_CHECK_CLOSE(dotted, correct, 1e-10);
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aGPU = GVector(a);
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auto twoNorm = aGPU.two_norm();
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double correctTwoNorm = 0.0;
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for (size_t i = 0; i < N; ++i) {
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correctTwoNorm += a[i] * a[i];
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}
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correctTwoNorm = std::sqrt(correctTwoNorm);
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BOOST_CHECK_CLOSE(twoNorm, correctTwoNorm, 1e-12);
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aGPU = GVector(a);
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std::vector<int> indexSet;
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const double rejectCriteria = 0.2;
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for (size_t i = 0; i < N; ++i) {
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const auto reject = distribution01(generator);
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if (reject < rejectCriteria) {
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indexSet.push_back(i);
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}
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}
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auto indexSetGPU = Opm::gpuistl::GpuVector<int>(indexSet);
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aGPU.setZeroAtIndexSet(indexSetGPU);
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auto projectedA = aGPU.asStdVector();
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for (size_t i = 0; i < N; ++i) {
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// Yeah, O(N^2) so sue me
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bool found = std::find(indexSet.begin(), indexSet.end(), i) != indexSet.end();
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if (found) {
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BOOST_CHECK_EQUAL(projectedA[i], 0);
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} else {
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BOOST_CHECK_EQUAL(projectedA[i], a[i]);
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}
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}
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aGPU = GVector(a);
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auto twoNormAtIndices = aGPU.two_norm(indexSetGPU);
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double correctTwoNormAtIndices = 0.0;
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for (size_t i = 0; i < indexSet.size(); ++i) {
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correctTwoNormAtIndices += a[indexSet[i]] * a[indexSet[i]];
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}
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correctTwoNormAtIndices = std::sqrt(correctTwoNormAtIndices);
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BOOST_CHECK_CLOSE(correctTwoNormAtIndices, twoNormAtIndices, 1e-13);
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}
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}
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