hipKernels.hpp

/*
  Copyright 2024 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_HIPKERNELS_HPP
#define OPM_HIPKERNELS_HPP

#include <string>
#include <memory>
#include <cstddef>

#include <hip/hip_runtime_api.h>
#include <hip/hip_version.h>

namespace Opm {

template<class Scalar>
class HipKernels
{
private:
    static int  verbosity;
    static bool initialized;

    HipKernels();

public:
    static void init(int verbosity);

    static void full_to_pressure_restriction(const Scalar* fine_y,
                                             Scalar* weights,
                                             Scalar* coarse_y,
                                             int Nb,
                                             hipStream_t stream);

    static void add_coarse_pressure_correction(Scalar* coarse_x,
                                               Scalar* fine_x,
                                               int pressure_idx,
                                               int Nb,
                                               hipStream_t stream);


    static void vmul(const Scalar alpha,
                     Scalar* in1,
                     Scalar* in2,
                     Scalar* out,
                     int N,
                     hipStream_t stream);

    static void prolongate_vector(const Scalar* in,
                                  Scalar* out,
                                  const int* cols,
                                  int N,
                                  hipStream_t stream);

    static void residual(Scalar* vals,
                         int* cols,
                         int* rows,
                         Scalar* x,
                         const Scalar* rhs,
                         Scalar* out,
                         int Nb,
                         unsigned int block_size,
                         hipStream_t stream);

    static void spmv(Scalar* vals,
                     int* cols,
                     int* rows,
                     Scalar* x,
                     Scalar* y,
                     int Nb,
                     unsigned int block_size,
                     hipStream_t stream);
};

} // namespace Opm

#endif