opm-simulators/opm/simulators/linalg/gpuistl/detail/preconditionerKernels/JacKernels.hpp
2024-08-22 15:32:21 +02:00

39 lines
1.6 KiB
C++

/*
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/>.
*/
#ifndef OPM_JAC_KERNELS_HPP
#define OPM_JAC_KERNELS_HPP
#include <cstddef>
#include <vector>
namespace Opm::gpuistl::detail::JAC
{
/**
* @brief This function receives a matrix, and the inverse of the matrix containing only its diagonal is stored in d_vec
* @param mat pointer to GPU memory containing nonzerovalues of the sparse matrix
* @param rowIndices Pointer to vector on GPU containing row indices compliant wiht bsr format
* @param colIndices Pointer to vector on GPU containing col indices compliant wiht bsr format
* @param numberOfRows Integer describing the number of rows in the matrix
* @param[out] vec Pointer to the vector where the inverse of the diagonal matrix should be stored
*/
template <class T, int blocksize>
void invertDiagonalAndFlatten(T* mat, int* rowIndices, int* colIndices, size_t numberOfRows, T* vec);
} // namespace Opm::gpuistl::detail::JAC
#endif