Actual source code: ex78.c
  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};
 15:   PetscFunctionBeginUser;
 16:   PetscCall(PetscInitialize(&argc, &args, NULL, help));
 17:   PetscCall(KSPCreate(PETSC_COMM_WORLD, &ksp));
 18:   for (i = 0; i < 3; i++) {
 19:     PetscCall(KSPSetType(ksp, common[i]));
 20:     PetscCall(KSPSetType(ksp, KSPHPDDM));
 21: #if defined(PETSC_HAVE_HPDDM)
 22:     PetscCall(KSPHPDDMGetType(ksp, &type));
 23:     PetscCall(PetscStrcmp(KSPHPDDMTypes[type], common[i], &flg));
 24:     PetscCheck(flg, PetscObjectComm((PetscObject)ksp), PETSC_ERR_PLIB, "KSPType and KSPHPDDMType do not match: %s != %s", common[i], KSPHPDDMTypes[type]);
 25:     PetscCall(KSPSetFromOptions(ksp));
 26:     PetscCall(KSPHPDDMGetType(ksp, &type));
 27:     PetscCheck(type == KSP_HPDDM_TYPE_GCRODR, PetscObjectComm((PetscObject)ksp), PETSC_ERR_PLIB, "-ksp_hpddm_type gcrodr and KSPHPDDMType do not match: gcrodr != %s", KSPHPDDMTypes[type]);
 28:     PetscCall(KSPHPDDMSetType(ksp, KSP_HPDDM_TYPE_BGMRES));
 29: #endif
 30:   }
 31:   PetscCall(KSPDestroy(&ksp));
 32:   PetscCall(PetscFinalize());
 33:   return 0;
 34: }
 36: /*TEST
 38:    test:
 39:       requires: hpddm
 40:       nsize: 1
 41:       suffix: 1
 42:       output_file: output/ex77_preonly.out
 43:       args: -ksp_type hpddm -ksp_hpddm_type gcrodr
 45: TEST*/