Actual source code: ex25.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, P = 4, m = PETSC_DECIDE, n = PETSC_DECIDE, p = PETSC_DECIDE, i, j, k, is, js, ks, in, jen, kn;
10: DM da;
11: Vec local, global;
12: PetscScalar ****l;
14: PetscFunctionBeginUser;
15: PetscCall(PetscInitialize(&argc, &argv, (char *)0, help));
16: /* Create distributed array and get vectors */
17: PetscCall(DMDACreate3d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DMDA_STENCIL_BOX, M, N, P, m, n, p, 2, 1, NULL, NULL, NULL, &da));
18: PetscCall(DMSetFromOptions(da));
19: PetscCall(DMSetUp(da));
20: PetscCall(DMCreateGlobalVector(da, &global));
21: PetscCall(DMCreateLocalVector(da, &local));
23: PetscCall(DMDAGetCorners(da, &is, &js, &ks, &in, &jen, &kn));
24: PetscCall(DMDAVecGetArrayDOF(da, local, &l));
25: for (i = is; i < is + in; i++) {
26: for (j = js; j < js + jen; j++) {
27: for (k = ks; k < ks + kn; k++) {
28: l[k][j][i][0] = 2 * (i + j * M + k * M * N);
29: l[k][j][i][1] = 2 * (i + j * M + k * M * N) + 1;
30: }
31: }
32: }
33: PetscCall(DMDAVecRestoreArrayDOF(da, local, &l));
34: PetscCall(DMLocalToGlobalBegin(da, local, ADD_VALUES, global));
35: PetscCall(DMLocalToGlobalEnd(da, local, ADD_VALUES, global));
37: PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD));
39: /* Free memory */
40: PetscCall(VecDestroy(&local));
41: PetscCall(VecDestroy(&global));
42: PetscCall(DMDestroy(&da));
43: PetscCall(PetscFinalize());
44: return 0;
45: }
47: /*TEST
49: test:
50: filter: grep -v -i Process
51: output_file: output/ex25_1.out
53: test:
54: suffix: 2
55: nsize: 2
56: filter: grep -v -i Process
57: output_file: output/ex25_2.out
59: test:
60: suffix: 3
61: nsize: 3
62: filter: grep -v -i Process
63: output_file: output/ex25_2.out
65: test:
66: suffix: 4
67: nsize: 4
68: filter: grep -v -i Process
69: output_file: output/ex25_2.out
71: test:
72: suffix: 5
73: nsize: 5
74: filter: grep -v -i Process
75: output_file: output/ex25_2.out
77: test:
78: suffix: 6
79: nsize: 6
80: filter: grep -v -i Process
81: output_file: output/ex25_2.out
83: TEST*/