1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests various 2-dimensional DMDA routines.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown #include <petscdraw.h> 6c4762a1bSJed Brown 7*d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 8*d71ae5a4SJacob Faibussowitsch { 9c4762a1bSJed Brown PetscInt M = 10, N = 8, dof = 1, s = 1, bx = 0, by = 0, i, n, j, k, m, wrap, xs, ys; 10c4762a1bSJed Brown DM da, dac; 11c4762a1bSJed Brown PetscViewer viewer; 12c4762a1bSJed Brown Vec local, global, coors; 13c4762a1bSJed Brown PetscScalar ***xy, ***aglobal; 14c4762a1bSJed Brown PetscDraw draw; 15c4762a1bSJed Brown char fname[32]; 16c4762a1bSJed Brown 17327415f7SBarry Smith PetscFunctionBeginUser; 189566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 19c4762a1bSJed Brown /* Create viewers */ 209566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD, 0, "", PETSC_DECIDE, PETSC_DECIDE, 600, 200, &viewer)); 219566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw)); 229566063dSJacob Faibussowitsch PetscCall(PetscDrawSetDoubleBuffer(draw)); 23c4762a1bSJed Brown 24c4762a1bSJed Brown /* Read options */ 259566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-M", &M, NULL)); 269566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-N", &N, NULL)); 279566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-dof", &dof, NULL)); 289566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-s", &s, NULL)); 299566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-periodic_x", &wrap, NULL)); 309566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-periodic_y", &wrap, NULL)); 31c4762a1bSJed Brown 32c4762a1bSJed Brown /* Create distributed array and get vectors */ 339566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD, (DMBoundaryType)bx, (DMBoundaryType)by, DMDA_STENCIL_BOX, M, N, PETSC_DECIDE, PETSC_DECIDE, dof, s, NULL, NULL, &da)); 349566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 359566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 369566063dSJacob Faibussowitsch PetscCall(DMDASetUniformCoordinates(da, 0.0, 1.0, 0.0, 1.0, 0.0, 0.0)); 37c4762a1bSJed Brown for (i = 0; i < dof; i++) { 38c4762a1bSJed Brown sprintf(fname, "Field %d", (int)i); 399566063dSJacob Faibussowitsch PetscCall(DMDASetFieldName(da, i, fname)); 40c4762a1bSJed Brown } 41c4762a1bSJed Brown 429566063dSJacob Faibussowitsch PetscCall(DMView(da, viewer)); 439566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da, &global)); 449566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da, &local)); 459566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(da, &coors)); 469566063dSJacob Faibussowitsch PetscCall(DMGetCoordinateDM(da, &dac)); 47c4762a1bSJed Brown 48c4762a1bSJed Brown /* Set values into global vectors */ 499566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOFRead(dac, coors, &xy)); 509566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(da, global, &aglobal)); 519566063dSJacob Faibussowitsch PetscCall(DMDAGetCorners(da, &xs, &ys, 0, &m, &n, 0)); 52c4762a1bSJed Brown for (k = 0; k < dof; k++) { 53c4762a1bSJed Brown for (j = ys; j < ys + n; j++) { 54ad540459SPierre Jolivet for (i = xs; i < xs + m; i++) aglobal[j][i][k] = PetscSinScalar(2.0 * PETSC_PI * (k + 1) * xy[j][i][0]); 55c4762a1bSJed Brown } 56c4762a1bSJed Brown } 579566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(da, global, &aglobal)); 589566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOFRead(dac, coors, &xy)); 599566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da, global, INSERT_VALUES, local)); 609566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da, global, INSERT_VALUES, local)); 61c4762a1bSJed Brown 629566063dSJacob Faibussowitsch PetscCall(VecSet(global, 0.0)); 639566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da, local, INSERT_VALUES, global)); 649566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da, local, INSERT_VALUES, global)); 659566063dSJacob Faibussowitsch PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 669566063dSJacob Faibussowitsch PetscCall(VecView(global, viewer)); 67c4762a1bSJed Brown 68c4762a1bSJed Brown /* Free memory */ 699566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 709566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 719566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 729566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 739566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 74b122ec5aSJacob Faibussowitsch return 0; 75c4762a1bSJed Brown } 76c4762a1bSJed Brown 77c4762a1bSJed Brown /*TEST 78c4762a1bSJed Brown 79c4762a1bSJed Brown test: 80c4762a1bSJed Brown args: -dof 2 81c4762a1bSJed Brown filter: grep -v -i Object 82c4762a1bSJed Brown requires: x 83c4762a1bSJed Brown 84c4762a1bSJed Brown test: 85c4762a1bSJed Brown suffix: 2 86c4762a1bSJed Brown nsize: 2 87c4762a1bSJed Brown args: -dof 2 88c4762a1bSJed Brown filter: grep -v -i Object 89c4762a1bSJed Brown requires: x 90c4762a1bSJed Brown 91c4762a1bSJed Brown test: 92c4762a1bSJed Brown suffix: 3 93c4762a1bSJed Brown nsize: 3 94c4762a1bSJed Brown args: -dof 2 95c4762a1bSJed Brown filter: grep -v -i Object 96c4762a1bSJed Brown requires: x 97c4762a1bSJed Brown 98c4762a1bSJed Brown TEST*/ 99