1c4762a1bSJed Brown static char help[] = "Tests various 2-dimensional DMDA routines.\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscdmda.h> 4c4762a1bSJed Brown #include <petscdraw.h> 5c4762a1bSJed Brown 6d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 7d71ae5a4SJacob Faibussowitsch { 8c4762a1bSJed Brown PetscInt M = 10, N = 8, dof = 1, s = 1, bx = 0, by = 0, i, n, j, k, m, wrap, xs, ys; 9c4762a1bSJed Brown DM da, dac; 10c4762a1bSJed Brown PetscViewer viewer; 11c4762a1bSJed Brown Vec local, global, coors; 12c4762a1bSJed Brown PetscScalar ***xy, ***aglobal; 13c4762a1bSJed Brown PetscDraw draw; 14c4762a1bSJed Brown char fname[32]; 15c4762a1bSJed Brown 16327415f7SBarry Smith PetscFunctionBeginUser; 17*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 18c4762a1bSJed Brown /* Create viewers */ 199566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD, 0, "", PETSC_DECIDE, PETSC_DECIDE, 600, 200, &viewer)); 209566063dSJacob Faibussowitsch PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw)); 219566063dSJacob Faibussowitsch PetscCall(PetscDrawSetDoubleBuffer(draw)); 22c4762a1bSJed Brown 23c4762a1bSJed Brown /* Read options */ 249566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-M", &M, NULL)); 259566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-N", &N, NULL)); 269566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-dof", &dof, NULL)); 279566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-s", &s, NULL)); 289566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-periodic_x", &wrap, NULL)); 299566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-periodic_y", &wrap, NULL)); 30c4762a1bSJed Brown 31c4762a1bSJed Brown /* Create distributed array and get vectors */ 329566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD, (DMBoundaryType)bx, (DMBoundaryType)by, DMDA_STENCIL_BOX, M, N, PETSC_DECIDE, PETSC_DECIDE, dof, s, NULL, NULL, &da)); 339566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 349566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 359566063dSJacob Faibussowitsch PetscCall(DMDASetUniformCoordinates(da, 0.0, 1.0, 0.0, 1.0, 0.0, 0.0)); 36c4762a1bSJed Brown for (i = 0; i < dof; i++) { 37a364092eSJacob Faibussowitsch PetscCall(PetscSNPrintf(fname, PETSC_STATIC_ARRAY_LENGTH(fname), "Field %" PetscInt_FMT, i)); 389566063dSJacob Faibussowitsch PetscCall(DMDASetFieldName(da, i, fname)); 39c4762a1bSJed Brown } 40c4762a1bSJed Brown 419566063dSJacob Faibussowitsch PetscCall(DMView(da, viewer)); 429566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da, &global)); 439566063dSJacob Faibussowitsch PetscCall(DMCreateLocalVector(da, &local)); 449566063dSJacob Faibussowitsch PetscCall(DMGetCoordinates(da, &coors)); 459566063dSJacob Faibussowitsch PetscCall(DMGetCoordinateDM(da, &dac)); 46c4762a1bSJed Brown 47c4762a1bSJed Brown /* Set values into global vectors */ 489566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOFRead(dac, coors, &xy)); 499566063dSJacob Faibussowitsch PetscCall(DMDAVecGetArrayDOF(da, global, &aglobal)); 509566063dSJacob Faibussowitsch PetscCall(DMDAGetCorners(da, &xs, &ys, 0, &m, &n, 0)); 51c4762a1bSJed Brown for (k = 0; k < dof; k++) { 52c4762a1bSJed Brown for (j = ys; j < ys + n; j++) { 53ad540459SPierre Jolivet for (i = xs; i < xs + m; i++) aglobal[j][i][k] = PetscSinScalar(2.0 * PETSC_PI * (k + 1) * xy[j][i][0]); 54c4762a1bSJed Brown } 55c4762a1bSJed Brown } 569566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOF(da, global, &aglobal)); 579566063dSJacob Faibussowitsch PetscCall(DMDAVecRestoreArrayDOFRead(dac, coors, &xy)); 589566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalBegin(da, global, INSERT_VALUES, local)); 599566063dSJacob Faibussowitsch PetscCall(DMGlobalToLocalEnd(da, global, INSERT_VALUES, local)); 60c4762a1bSJed Brown 619566063dSJacob Faibussowitsch PetscCall(VecSet(global, 0.0)); 629566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalBegin(da, local, INSERT_VALUES, global)); 639566063dSJacob Faibussowitsch PetscCall(DMLocalToGlobalEnd(da, local, INSERT_VALUES, global)); 649566063dSJacob Faibussowitsch PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 659566063dSJacob Faibussowitsch PetscCall(VecView(global, viewer)); 66c4762a1bSJed Brown 67c4762a1bSJed Brown /* Free memory */ 689566063dSJacob Faibussowitsch PetscCall(PetscViewerDestroy(&viewer)); 699566063dSJacob Faibussowitsch PetscCall(VecDestroy(&global)); 709566063dSJacob Faibussowitsch PetscCall(VecDestroy(&local)); 719566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 729566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 73b122ec5aSJacob Faibussowitsch return 0; 74c4762a1bSJed Brown } 75c4762a1bSJed Brown 76c4762a1bSJed Brown /*TEST 77c4762a1bSJed Brown 78c4762a1bSJed Brown test: 79c4762a1bSJed Brown args: -dof 2 80c4762a1bSJed Brown filter: grep -v -i Object 81c4762a1bSJed Brown requires: x 82c4762a1bSJed Brown 83c4762a1bSJed Brown test: 84c4762a1bSJed Brown suffix: 2 85c4762a1bSJed Brown nsize: 2 86c4762a1bSJed Brown args: -dof 2 87c4762a1bSJed Brown filter: grep -v -i Object 88c4762a1bSJed Brown requires: x 89c4762a1bSJed Brown 90c4762a1bSJed Brown test: 91c4762a1bSJed Brown suffix: 3 92c4762a1bSJed Brown nsize: 3 93c4762a1bSJed Brown args: -dof 2 94c4762a1bSJed Brown filter: grep -v -i Object 95c4762a1bSJed Brown requires: x 96c4762a1bSJed Brown 97c4762a1bSJed Brown TEST*/ 98