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70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
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Copyright 2020 Equinor ASA
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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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#ifndef OPM_MATRIX_HEADER_INCLUDED
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#define OPM_MATRIX_HEADER_INCLUDED
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#include <vector>
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namespace Opm
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{
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namespace Accelerator
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{
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/// This struct resembles a csr matrix, only doubles are supported
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/// The data is stored in contiguous memory, such that they can be copied to a device in one transfer.
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class Matrix {
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public:
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/// Allocate square Matrix and data arrays with given sizes
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/// \param[in] N number of rows
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/// \param[in] nnzs number of nonzeros
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Matrix(int N_, int nnzs_)
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: N(N_),
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M(N_),
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nnzs(nnzs_)
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{
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nnzValues.resize(nnzs);
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colIndices.resize(nnzs);
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rowPointers.resize(N+1);
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}
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/// Allocate rectangular Matrix and data arrays with given sizes
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/// \param[in] N number of rows
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/// \param[in] M number of columns
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/// \param[in] nnzs number of nonzeros
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Matrix(int N_, int M_, int nnzs_)
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: Matrix(N_, nnzs_)
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{
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M = M_;
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}
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std::vector<double> nnzValues;
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std::vector<int> colIndices;
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std::vector<int> rowPointers;
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int N, M;
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int nnzs;
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};
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} // namespace Accelerator
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} // namespace Opm
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#endif // OPM_MATRIX_HEADER_INCLUDED
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