Actual source code: ex78.c
petsc-3.15.0 2021-03-30
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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*/