1c4762a1bSJed Brown static char help[] = "Tests various DM routines.\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscdm.h> 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown 6d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 7d71ae5a4SJacob Faibussowitsch { 8c4762a1bSJed Brown PetscMPIInt rank; 9c4762a1bSJed Brown PetscInt M = 10, N = 8, m = PETSC_DECIDE, n = PETSC_DECIDE; 10c4762a1bSJed Brown DM da; 11c4762a1bSJed Brown PetscViewer viewer; 12c4762a1bSJed Brown Vec local, global; 13c4762a1bSJed Brown PetscScalar value; 14c4762a1bSJed Brown 15327415f7SBarry Smith PetscFunctionBeginUser; 16*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 179566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD, 0, "", 300, 0, 300, 300, &viewer)); 18c4762a1bSJed Brown 19c4762a1bSJed Brown /* Read options */ 209566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-M", &M, NULL)); 219566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-N", &N, NULL)); 229566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-m", &m, NULL)); 239566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL)); 24c4762a1bSJed Brown 25c4762a1bSJed Brown /* Create distributed array and get vectors */ 269566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DMDA_STENCIL_BOX, M, N, m, n, 1, 1, NULL, NULL, &da)); 279566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 289566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 299566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da, &global)); 309566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da, &local)); 31c4762a1bSJed Brown 32c4762a1bSJed Brown value = -3.0; 339566063dSJacob Faibussowitsch PetscCall(VecSet(global, value)); 349566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da, global, INSERT_VALUES, local)); 359566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da, global, INSERT_VALUES, local)); 36c4762a1bSJed Brown 379566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 38c4762a1bSJed Brown value = rank + 1; 399566063dSJacob Faibussowitsch PetscCall(VecScale(local, value)); 409566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da, local, ADD_VALUES, global)); 419566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da, local, ADD_VALUES, global)); 42c4762a1bSJed Brown 439566063dSJacob Faibussowitsch PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 449566063dSJacob Faibussowitsch PetscCall(DMView(da, viewer)); 45c4762a1bSJed Brown 46c4762a1bSJed Brown /* Free memory */ 479566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 489566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 499566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 509566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 519566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 52b122ec5aSJacob Faibussowitsch return 0; 53c4762a1bSJed Brown } 54c4762a1bSJed Brown 55c4762a1bSJed Brown /*TEST 56c4762a1bSJed Brown 57c4762a1bSJed Brown test: 58c4762a1bSJed Brown nsize: 2 59c4762a1bSJed Brown args: -nox 60c4762a1bSJed Brown filter: grep -v -i Object 61c4762a1bSJed Brown 62c4762a1bSJed Brown test: 63c4762a1bSJed Brown suffix: cuda1 64c4762a1bSJed Brown requires: cuda 65c4762a1bSJed Brown args: -dm_vec_type cuda -nox 66c4762a1bSJed Brown filter: grep -v -i Object 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown suffix: cuda2 70c4762a1bSJed Brown nsize: 2 71c4762a1bSJed Brown requires: cuda 72c4762a1bSJed Brown args: -dm_vec_type cuda -nox 73c4762a1bSJed Brown filter: grep -v -i Object 74c4762a1bSJed Brown 75c4762a1bSJed Brown TEST*/ 76