2: static char help[] = "Tests DMComposite routines.\n\n";

  4:  #include <petscdmredundant.h>
  5:  #include <petscdm.h>
  6:  #include <petscdmda.h>
  7:  #include <petscdmcomposite.h>
  8:  #include <petscpf.h>

 10: int main(int argc,char **argv)
 11: {
 12:   PetscErrorCode         ierr;
 13:   PetscInt               nredundant1 = 5,nredundant2 = 2,i;
 14:   ISLocalToGlobalMapping *ltog;
 15:   PetscMPIInt            rank,size;
 16:   DM                     packer;
 17:   Vec                    global,local1,local2,redundant1,redundant2;
 18:   PF                     pf;
 19:   DM                     da1,da2,dmred1,dmred2;
 20:   PetscScalar            *redundant1a,*redundant2a;
 21:   PetscViewer            sviewer;
 22:   PetscBool              gather_add = PETSC_FALSE;

 24:   PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr;
 25:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
 26:   MPI_Comm_size(PETSC_COMM_WORLD,&size);

 28:   PetscOptionsGetBool(NULL,NULL,"-gather_add",&gather_add,NULL);

 30:   DMCompositeCreate(PETSC_COMM_WORLD,&packer);

 32:   DMRedundantCreate(PETSC_COMM_WORLD,0,nredundant1,&dmred1);
 33:   DMCreateLocalVector(dmred1,&redundant1);
 34:   DMCompositeAddDM(packer,dmred1);

 36:   DMDACreate1d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,8,1,1,NULL,&da1);
 37:   DMSetFromOptions(da1);
 38:   DMSetUp(da1);
 39:   DMCreateLocalVector(da1,&local1);
 40:   DMCompositeAddDM(packer,da1);

 42:   DMRedundantCreate(PETSC_COMM_WORLD,1%size,nredundant2,&dmred2);
 43:   DMCreateLocalVector(dmred2,&redundant2);
 44:   DMCompositeAddDM(packer,dmred2);

 46:   DMDACreate1d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,6,1,1,NULL,&da2);
 47:   DMSetFromOptions(da2);
 48:   DMSetUp(da2);
 49:   DMCreateLocalVector(da2,&local2);
 50:   DMCompositeAddDM(packer,da2);

 52:   DMCreateGlobalVector(packer,&global);
 53:   PFCreate(PETSC_COMM_WORLD,1,1,&pf);
 54:   PFSetType(pf,PFIDENTITY,NULL);
 55:   PFApplyVec(pf,NULL,global);
 56:   PFDestroy(&pf);
 57:   VecView(global,PETSC_VIEWER_STDOUT_WORLD);

 59:   DMCompositeScatter(packer,global,redundant1,local1,redundant2,local2);
 60:   PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD);
 61:   PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"[%d] My part of redundant1 vector\n",rank);
 62:   PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 63:   VecView(redundant1,sviewer);
 64:   PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 65:   PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD);
 66:   PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"[%d] My part of da1 vector\n",rank);
 67:   PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 68:   VecView(local1,sviewer);
 69:   PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 70:   PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD);
 71:   PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"[%d] My part of redundant2 vector\n",rank);
 72:   PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 73:   VecView(redundant2,sviewer);
 74:   PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 75:   PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD);
 76:   PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"[%d] My part of da2 vector\n",rank);
 77:   PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 78:   VecView(local2,sviewer);
 79:   PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);
 80:   PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD);
 81:   PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD);

 83:   VecGetArray(redundant1,&redundant1a);
 84:   VecGetArray(redundant2,&redundant2a);
 85:   for (i=0; i<nredundant1; i++) redundant1a[i] = (rank+2)*i;
 86:   for (i=0; i<nredundant2; i++) redundant2a[i] = (rank+10)*i;
 87:   VecRestoreArray(redundant1,&redundant1a);
 88:   VecRestoreArray(redundant2,&redundant2a);

 90:   DMCompositeGather(packer,gather_add ? ADD_VALUES : INSERT_VALUES,global,redundant1,local1,redundant2,local2);
 91:   VecView(global,PETSC_VIEWER_STDOUT_WORLD);

 93:   /* get the global numbering for each subvector element */
 94:   DMCompositeGetISLocalToGlobalMappings(packer,&ltog);

 96:   PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"Local to global mapping of redundant1 vector\n");
 97:   ISLocalToGlobalMappingView(ltog[0],PETSC_VIEWER_STDOUT_WORLD);
 98:   PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"Local to global mapping of local1 vector\n");
 99:   ISLocalToGlobalMappingView(ltog[1],PETSC_VIEWER_STDOUT_WORLD);
100:   PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"Local to global mapping of redundant2 vector\n");
101:   ISLocalToGlobalMappingView(ltog[2],PETSC_VIEWER_STDOUT_WORLD);
102:   PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"Local to global mapping of local2 vector\n");
103:   ISLocalToGlobalMappingView(ltog[3],PETSC_VIEWER_STDOUT_WORLD);

105:   for (i=0; i<4; i++) {ISLocalToGlobalMappingDestroy(&ltog[i]);}
106:   PetscFree(ltog);

108:   DMDestroy(&da1);
109:   DMDestroy(&dmred1);
110:   DMDestroy(&dmred2);
111:   DMDestroy(&da2);
112:   VecDestroy(&redundant1);
113:   VecDestroy(&redundant2);
114:   VecDestroy(&local1);
115:   VecDestroy(&local2);
116:   VecDestroy(&global);
117:   DMDestroy(&packer);
118:   PetscFinalize();
119:   return ierr;
120: }



124: /*TEST

126:    build:
127:       requires: !complex

129:    test:
130:       nsize: 3

132:    test:
133:       suffix: 2
134:       nsize: 3
135:       args: -gather_add

137: TEST*/