Actual source code: ex24.c


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

  4: #include <petscdm.h>
  5: #include <petscdmda.h>

  7: int main(int argc,char **argv)
  8: {
  9:   PetscInt       M = 6,N = 5,m = PETSC_DECIDE,n = PETSC_DECIDE,i,j,is,js,in,jen;
 10:   DM             da;
 11:   Vec            local,global;
 12:   PetscScalar    ***l;

 14:   PetscInitialize(&argc,&argv,(char*)0,help);
 15:   /* Create distributed array and get vectors */
 16:   DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE,DMDA_STENCIL_BOX,M,N,m,n,3,1,NULL,NULL,&da);
 17:   DMSetFromOptions(da);
 18:   DMSetUp(da);
 19:   DMCreateGlobalVector(da,&global);
 20:   DMCreateLocalVector(da,&local);

 22:   DMDAGetCorners(da,&is,&js,0,&in,&jen,0);
 23:   DMDAVecGetArrayDOF(da,local,&l);
 24:   for (i=is; i<is+in; i++) {
 25:     for (j=js; j<js+jen; j++) {
 26:       l[j][i][0] = 3*(i + j*M);
 27:       l[j][i][1] = 3*(i + j*M) + 1;
 28:       l[j][i][2] = 3*(i + j*M) + 2;
 29:     }
 30:   }
 31:   DMDAVecRestoreArrayDOF(da,local,&l);
 32:   DMLocalToGlobalBegin(da,local,ADD_VALUES,global);
 33:   DMLocalToGlobalEnd(da,local,ADD_VALUES,global);

 35:   VecView(global,PETSC_VIEWER_STDOUT_WORLD);

 37:   /* Free memory */
 38:   VecDestroy(&local);
 39:   VecDestroy(&global);
 40:   DMDestroy(&da);
 41:   PetscFinalize();
 42:   return 0;
 43: }

 45: /*TEST

 47:       test:
 48:          filter: grep -v -i Process
 49:          output_file: output/ex24_1.out

 51:       test:
 52:          suffix: 2
 53:          nsize: 2
 54:          filter: grep -v -i Process
 55:          output_file: output/ex24_2.out

 57:       test:
 58:          suffix: 3
 59:          nsize: 3
 60:          filter: grep -v -i Process
 61:          output_file: output/ex24_2.out

 63:       test:
 64:          suffix: 4
 65:          nsize: 4
 66:          filter: grep -v -i Process
 67:          output_file: output/ex24_2.out

 69:       test:
 70:          suffix: 5
 71:          nsize: 5
 72:          filter: grep -v -i Process
 73:          output_file: output/ex24_2.out

 75:       test:
 76:          suffix: 6
 77:          nsize: 6
 78:          filter: grep -v -i Process
 79:          output_file: output/ex24_2.out

 81: TEST*/