Actual source code: ex78.c

petsc-master 2020-07-05
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  1:  #include <petsc.h>

  3: static char help[] = "Exercises switching back and forth between different KSP and KSPHPDDM types.\n\n";

  5: int main(int argc,char **args)
  6: {
  7:   KSP            ksp;
  8: #if defined(PETSC_HAVE_HPDDM)
  9:   KSPHPDDMType   type;
 10:   PetscBool      flg;
 11: #endif
 12:   PetscInt       i;
 13:   const char     *common[] = {KSPGMRES,KSPCG,KSPPREONLY};

 16:   PetscInitialize(&argc,&args,NULL,help);if (ierr) return ierr;
 17:   KSPCreate(PETSC_COMM_WORLD,&ksp);
 18:   for (i=0; i<3; i++) {
 19:     KSPSetType(ksp,common[i]);
 20:     KSPSetType(ksp,KSPHPDDM);
 21: #if defined(PETSC_HAVE_HPDDM)
 22:     KSPHPDDMGetType(ksp,&type);
 23:     PetscStrcmp(KSPHPDDMTypes[type],common[i],&flg);
 24:     if (!flg) SETERRQ2(PetscObjectComm((PetscObject)ksp),PETSC_ERR_PLIB,"KSPType and KSPHPDDMType do not match: %s != %s", common[i], type);
 25:     KSPSetFromOptions(ksp);
 26:     KSPHPDDMGetType(ksp,&type);
 27:     if (type != KSP_HPDDM_TYPE_GCRODR) SETERRQ1(PetscObjectComm((PetscObject)ksp),PETSC_ERR_PLIB,"-ksp_hpddm_type gcrodr and KSPHPDDMType do not match: gcrodr != %s", KSPHPDDMTypes[type]);
 28: #endif
 29:   }
 30:   KSPDestroy(&ksp);
 31:   PetscFinalize();
 32:   return ierr;
 33: }

 35: /*TEST

 37:    test:
 38:       requires: hpddm
 39:       nsize: 1
 40:       suffix: 1
 41:       output_file: output/ex77_preonly.out
 42:       args: -ksp_type hpddm -ksp_hpddm_type gcrodr

 44: TEST*/