HypreDataStructures.hpp

/*
  Copyright 2025 Equinor ASA

  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_HYPRE_DATA_STRUCTURES_HPP
#define OPM_HYPRE_DATA_STRUCTURES_HPP

#include <HYPRE.h>
#include <HYPRE_parcsr_ls.h>
#include <_hypre_utilities.h>
#include <vector>

namespace Opm::gpuistl
{

 struct ParallelInfo {
    std::vector<int> local_dune_to_local_hypre;

    std::vector<int> local_dune_to_global_hypre;

    std::vector<int> local_hypre_to_local_dune;

    HYPRE_Int N_owned;

    HYPRE_Int dof_offset;

    bool owner_first;
};

struct SparsityPattern {
    std::vector<HYPRE_Int> ncols;

    std::vector<HYPRE_BigInt> rows;

    std::vector<HYPRE_BigInt> cols;

    HYPRE_Int nnz;
};

struct HypreHostDataArrays {
    std::vector<HYPRE_Int> row_indexes;

    std::vector<HYPRE_BigInt> indices;

    std::vector<HYPRE_Real> continuous_vector_values;
};

struct HypreDeviceDataArrays {
    HYPRE_Int* ncols_device = nullptr;
    HYPRE_BigInt* rows_device = nullptr;
    HYPRE_BigInt* cols_device = nullptr;
    HYPRE_Int* row_indexes_device = nullptr;
    HYPRE_BigInt* indices_device = nullptr;

    HYPRE_Real* vector_buffer_device = nullptr;

    HYPRE_Real* matrix_buffer_device = nullptr;
};
} // namespace Opm::gpuistl

#endif // OPM_HYPRE_DATA_STRUCTURES_HPP