Actual source code: ex1.c
1: static char help[] = "Make a 2D grid of patches and view them\n\n";
3: /*
4: Serial Test
5: Parallel Test where all zooms are serials
6: Parallel Test where zooms are parallel
8: Return DMPatch from Zoom
9: Override refine from DMPatch to split cells
10: */
11: #include <petscdmpatch.h>
13: typedef struct {
14: PetscInt debug; /* The debugging level */
15: PetscInt dim; /* The spatial dimension */
16: MatStencil patchSize; /* Size of patches */
17: MatStencil gridSize; /* Size of patch grid */
18: MatStencil commSize; /* Size of patch comm */
19: } AppCtx;
21: PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options)
22: {
23: PetscInt patchSize, commSize, gridSize;
25: options->debug = 0;
26: options->dim = 2;
27: patchSize = 0;
28: commSize = 0;
29: gridSize = 1;
31: PetscOptionsBegin(comm, "", "Patch Test Options", "DMPATCH");
32: PetscOptionsBoundedInt("-debug", "The debugging level", "ex1.c", options->debug, &options->debug, NULL, 0);
33: PetscOptionsRangeInt("-dim", "The spatial dimension", "ex1.c", options->dim, &options->dim, NULL, 1, 3);
34: PetscOptionsBoundedInt("-patch_size", "The patch size in each dimension", "ex1.c", patchSize, &patchSize, NULL, 0);
35: PetscOptionsBoundedInt("-comm_size", "The comm size in each dimension", "ex1.c", commSize, &commSize, NULL, 0);
36: PetscOptionsBoundedInt("-grid_size", "The grid size in each dimension", "ex1.c", gridSize, &gridSize, NULL, 1);
37: PetscOptionsEnd();
39: options->patchSize.i = options->patchSize.j = options->patchSize.k = 1;
40: options->commSize.i = options->commSize.j = options->commSize.k = 1;
41: options->gridSize.i = options->gridSize.j = options->gridSize.k = 1;
42: if (options->dim > 0) {
43: options->patchSize.i = patchSize;
44: options->commSize.i = commSize;
45: options->gridSize.i = gridSize;
46: }
47: if (options->dim > 1) {
48: options->patchSize.j = patchSize;
49: options->commSize.j = commSize;
50: options->gridSize.j = gridSize;
51: }
52: if (options->dim > 2) {
53: options->patchSize.k = patchSize;
54: options->commSize.k = commSize;
55: options->gridSize.k = gridSize;
56: }
57: return 0;
58: }
60: int main(int argc, char **argv)
61: {
62: DM dm;
63: AppCtx user; /* user-defined work context */
66: PetscInitialize(&argc, &argv, NULL, help);
67: ProcessOptions(PETSC_COMM_WORLD, &user);
68: DMPatchCreateGrid(PETSC_COMM_WORLD, user.dim, user.patchSize, user.commSize, user.gridSize, &dm);
69: PetscObjectSetName((PetscObject)dm, "Patch Mesh");
70: DMSetFromOptions(dm);
71: DMSetUp(dm);
72: DMView(dm, PETSC_VIEWER_STDOUT_WORLD);
73: DMPatchSolve(dm);
74: DMDestroy(&dm);
75: PetscFinalize();
76: return 0;
77: }
79: /*TEST
81: test:
83: TEST*/