Date: 2022-03-04T17:39:14+00:00

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};

     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:     KSPHPDDMSetType(ksp,KSP_HPDDM_TYPE_BGMRES);
     29: #endif
     30:   }
     31:   KSPDestroy(&ksp);
     32:   PetscFinalize();
     33:   return ierr;
     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*/