1c4762a1bSJed Brown static char help[] = "Tests various 1-dimensional DMDA routines.\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscdm.h> 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown #include <petscdraw.h> 6c4762a1bSJed Brown 7d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 8d71ae5a4SJacob Faibussowitsch { 9c4762a1bSJed Brown PetscMPIInt rank; 10cd0b497eSStefano Zampini PetscInt M = 13, s = 1, dof = 1, n; 11c4762a1bSJed Brown DMBoundaryType bx = DM_BOUNDARY_PERIODIC; 12c4762a1bSJed Brown DM da; 13c4762a1bSJed Brown PetscViewer viewer; 14c4762a1bSJed Brown Vec local, global; 15cd0b497eSStefano Zampini PetscScalar value, *array; 16c4762a1bSJed Brown PetscDraw draw; 17c4762a1bSJed Brown PetscBool flg = PETSC_FALSE; 18c4762a1bSJed Brown ISLocalToGlobalMapping is; 19c4762a1bSJed Brown 20327415f7SBarry Smith PetscFunctionBeginUser; 21*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 229566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD, 0, "", 280, 480, 600, 200, &viewer)); 239566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw)); 249566063dSJacob Faibussowitsch PetscCall(PetscDrawSetDoubleBuffer(draw)); 25c4762a1bSJed Brown 26c4762a1bSJed Brown /* Readoptions */ 279566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-M", &M, NULL)); 289566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetEnum(NULL, NULL, "-wrap", DMBoundaryTypes, (PetscEnum *)&bx, NULL)); 299566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-dof", &dof, NULL)); 309566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-s", &s, NULL)); 31c4762a1bSJed Brown 32c4762a1bSJed Brown /* Create distributed array and get vectors */ 339566063dSJacob Faibussowitsch PetscCall(DMDACreate1d(PETSC_COMM_WORLD, bx, M, dof, s, NULL, &da)); 349566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 359566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 369566063dSJacob Faibussowitsch PetscCall(DMView(da, viewer)); 379566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da, &global)); 389566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da, &local)); 39c4762a1bSJed Brown 40c4762a1bSJed Brown value = 1; 419566063dSJacob Faibussowitsch PetscCall(VecSet(global, value)); 42c4762a1bSJed Brown 439566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 44c4762a1bSJed Brown value = rank + 1; 45cd0b497eSStefano Zampini PetscCall(VecGetLocalSize(global, &n)); 46cd0b497eSStefano Zampini PetscCall(VecGetArray(global, &array)); 47cd0b497eSStefano Zampini for (PetscInt i = 0; i < n; i++) array[i] *= value; 48cd0b497eSStefano Zampini PetscCall(VecRestoreArray(global, &array)); 49c4762a1bSJed Brown 509566063dSJacob Faibussowitsch PetscCall(VecView(global, viewer)); 519566063dSJacob Faibussowitsch PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\nGlobal Vector:\n")); 529566063dSJacob Faibussowitsch PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 539566063dSJacob Faibussowitsch PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\n")); 54c4762a1bSJed Brown 55c4762a1bSJed Brown /* Send ghost points to local vectors */ 569566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da, global, INSERT_VALUES, local)); 579566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da, global, INSERT_VALUES, local)); 58c4762a1bSJed Brown 599566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetBool(NULL, NULL, "-local_print", &flg, NULL)); 60c4762a1bSJed Brown if (flg) { 61c4762a1bSJed Brown PetscViewer sviewer; 62c4762a1bSJed Brown 639566063dSJacob Faibussowitsch PetscCall(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 649566063dSJacob Faibussowitsch PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 65b4025f61SBarry Smith PetscCall(PetscViewerASCIIPrintf(sviewer, "\nLocal Vector: processor %d\n", rank)); 669566063dSJacob Faibussowitsch PetscCall(VecView(local, sviewer)); 679566063dSJacob Faibussowitsch PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 689566063dSJacob Faibussowitsch PetscCall(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 69c4762a1bSJed Brown } 709566063dSJacob Faibussowitsch PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\nLocal to global mapping\n")); 719566063dSJacob Faibussowitsch PetscCall(DMGetLocalToGlobalMapping(da, &is)); 729566063dSJacob Faibussowitsch PetscCall(ISLocalToGlobalMappingView(is, PETSC_VIEWER_STDOUT_WORLD)); 73c4762a1bSJed Brown 74c4762a1bSJed Brown /* Free memory */ 759566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 769566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 779566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 789566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 799566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 80b122ec5aSJacob Faibussowitsch return 0; 81c4762a1bSJed Brown } 82c4762a1bSJed Brown 83c4762a1bSJed Brown /*TEST 84c4762a1bSJed Brown 85c4762a1bSJed Brown test: 86c4762a1bSJed Brown nsize: 2 87c4762a1bSJed Brown args: -nox 888cc725e6SPierre Jolivet filter: grep -v " MPI process" 89c4762a1bSJed Brown output_file: output/ex2_1.out 90c4762a1bSJed Brown requires: x 91c4762a1bSJed Brown 92c4762a1bSJed Brown test: 93c4762a1bSJed Brown suffix: 2 94c4762a1bSJed Brown nsize: 3 95c4762a1bSJed Brown args: -wrap none -local_print -nox 96c4762a1bSJed Brown filter: grep -v "Vec Object: Vec" 97c4762a1bSJed Brown requires: x 98c4762a1bSJed Brown 99c4762a1bSJed Brown test: 100c4762a1bSJed Brown suffix: 3 101c4762a1bSJed Brown nsize: 3 102c4762a1bSJed Brown args: -wrap ghosted -local_print -nox 103c4762a1bSJed Brown filter: grep -v "Vec Object: Vec" 104c4762a1bSJed Brown requires: x 105c4762a1bSJed Brown 106c4762a1bSJed Brown TEST*/ 107