Solv_AMGX.h

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#ifndef Solv_AMGX_included
#define Solv_AMGX_included
 
#include <Solv_Petsc.h>
 
#ifdef TRUST_USE_CUDA
#include <AmgXSolver.hpp>
#include <amgx_c.h>
#endif
 
class Solv_AMGX : public Solv_Petsc
{
  Declare_instanciable_sans_constructeur(Solv_AMGX);
public:
  inline Solv_AMGX()
  {
    amgx_=true;
  };
protected :
#ifdef PETSCKSP_H
#ifdef TRUST_USE_CUDA
  void Create_objects(const Matrice_Morse&, int blocksize) override;
  void Create_vectors(const DoubleVect&) override;
  void Update_vectors(const DoubleVect& secmem, DoubleVect& solution) override;
  void Update_solution(DoubleVect& solution) override;
  void Update_matrix(Mat&, const Matrice_Morse&) override;
  bool detect_new_stencil(const Matrice_Morse&) override;
  int solve(ArrOfDouble& residual) override;
  int nbiter(ArrOfDouble& residual);
  void initialize();
  void finalize() override
  {
    if (amgx_initialized_)
      {
        SolveurAmgX_.finalize();
        amgx_initialized_ = false;
      }
  }
  AmgXSolver SolveurAmgX_; // Instance de AmgXWrapper
 
  PetscErrorCode petscToCSR(Mat& A, Vec& lhs_petsc, Vec& rhs_petsc);
  PetscInt nRowsLocal, nRowsGlobal, nNz;
  Mat localA = nullptr;
  const PetscInt *colIndices = nullptr, *rowOffsets = nullptr;
  PetscScalar *values;
#endif
#endif
};
#endif