Solv_cuDSS.h

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#ifndef Solv_cuDSS_included
#define Solv_cuDSS_included
 
#include <Solv_Externe.h>
#include <Motcle.h>
#include <Device.h>
#include <Matrice_Morse.h>
class EChaine;
 
#ifdef TRUST_USE_CUDA
#include <cudss.h>
#include <cuda.h>
#define cuDSS_
#endif
 
class Solv_cuDSS : public Solv_Externe
{
  Declare_instanciable_sans_constructeur_ni_destructeur(Solv_cuDSS);
 
public :
  Solv_cuDSS() {};
  Solv_cuDSS(const Solv_cuDSS&);
  ~Solv_cuDSS() override;
 
  inline int solveur_direct() const override { return 1; };
  inline int resoudre_systeme(const Matrice_Base& a, const DoubleVect& b, DoubleVect& x, int niter_max) override { return resoudre_systeme(a,b,x); };
 
  int resoudre_systeme(const Matrice_Base& a, const DoubleVect& b, DoubleVect& x) override;
 
private :
  void Create_objects(const Matrice_Morse&);
  void set_pointers_A(const Matrice_Morse&);
  void set_pointers_xb(const DoubleVect& bvect, DoubleVect& xvect);
 
  Matrice_Morse csr_;
 
#ifdef cuDSS_
  int nrhs=1; //For batched solve
  int n=-1;
  int nnz=-1;
 
  double * b_values_d=nullptr;
  double * x_values_d=nullptr;
  int * csr_offsets_d=nullptr;
  int * csr_columns_d =nullptr;
  double * csr_values_d =nullptr;
 
  bool Axb_are_built = false;
  bool solver_is_built = false;
  bool first_solve=true;
 
  cudssAlgType_t reorder_alg = CUDSS_ALG_DEFAULT; //Can be 0->5. Default / recommended is 0
  cudssConfig_t solverConfig;
  cudssHandle_t handle;
  cudssData_t solverData;
  cudssMatrixType_t mtype;
  cudssMatrixViewType_t mview;
  cudssMatrix_t x, b, A;
  cudssIndexBase_t base = CUDSS_BASE_ONE; //Fortran indexing
  cudssStatus_t status;
#endif
};
 
#endif