Actual source code: ex24.c

  2: static char help[] = "Tests DALocalToGlocal() for dof > 1\n\n";

 4:  #include petscda.h
 5:  #include petscsys.h

  9: int main(int argc,char **argv)
 10: {
 11:   PetscInt       M = 6,N = 5,m = PETSC_DECIDE,n = PETSC_DECIDE,i,j,is,js,in,jen;
 13:   DA             da;
 14:   Vec            local,global;
 15:   PetscScalar    ***l;

 17:   PetscInitialize(&argc,&argv,(char*)0,help);

 19:   /* Create distributed array and get vectors */
 20:   DACreate2d(PETSC_COMM_WORLD,DA_NONPERIODIC,DA_STENCIL_BOX,M,N,m,n,3,1,PETSC_NULL,PETSC_NULL,&da);
 21:   DACreateGlobalVector(da,&global);
 22:   DACreateLocalVector(da,&local);

 24:   DAGetCorners(da,&is,&js,0,&in,&jen,0);
 25:   DAVecGetArrayDOF(da,local,&l);
 26:   for (i=is; i<is+in; i++) {
 27:     for (j=js; j<js+jen; j++) {
 28:       l[j][i][0] = 3*(i + j*M);
 29:       l[j][i][1] = 3*(i + j*M) + 1;
 30:       l[j][i][2] = 3*(i + j*M) + 2;
 31:     }
 32:   }
 33:   DAVecRestoreArrayDOF(da,local,&l);
 34:   DALocalToGlobal(da,local,ADD_VALUES,global);

 36:   VecView(global,PETSC_VIEWER_STDOUT_WORLD);

 38:   /* Free memory */
 39:   VecDestroy(local);
 40:   VecDestroy(global);
 41:   DADestroy(da);
 42:   PetscFinalize();
 43:   return 0;
 44: }
 45: