1 2 static char help[] = "Tests various 1-dimensional DMDA routines.\n\n"; 3 4 #include <petscdm.h> 5 #include <petscdmda.h> 6 #include <petscdraw.h> 7 8 int main(int argc, char **argv) 9 { 10 PetscMPIInt rank; 11 PetscInt M = 13, s = 1, dof = 1; 12 DMBoundaryType bx = DM_BOUNDARY_PERIODIC; 13 DM da; 14 PetscViewer viewer; 15 Vec local, global; 16 PetscScalar value; 17 PetscDraw draw; 18 PetscBool flg = PETSC_FALSE; 19 ISLocalToGlobalMapping is; 20 21 PetscFunctionBeginUser; 22 PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 23 PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD, 0, "", 280, 480, 600, 200, &viewer)); 24 PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw)); 25 PetscCall(PetscDrawSetDoubleBuffer(draw)); 26 27 /* Readoptions */ 28 PetscCall(PetscOptionsGetInt(NULL, NULL, "-M", &M, NULL)); 29 PetscCall(PetscOptionsGetEnum(NULL, NULL, "-wrap", DMBoundaryTypes, (PetscEnum *)&bx, NULL)); 30 PetscCall(PetscOptionsGetInt(NULL, NULL, "-dof", &dof, NULL)); 31 PetscCall(PetscOptionsGetInt(NULL, NULL, "-s", &s, NULL)); 32 33 /* Create distributed array and get vectors */ 34 PetscCall(DMDACreate1d(PETSC_COMM_WORLD, bx, M, dof, s, NULL, &da)); 35 PetscCall(DMSetFromOptions(da)); 36 PetscCall(DMSetUp(da)); 37 PetscCall(DMView(da, viewer)); 38 PetscCall(DMCreateGlobalVector(da, &global)); 39 PetscCall(DMCreateLocalVector(da, &local)); 40 41 value = 1; 42 PetscCall(VecSet(global, value)); 43 44 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 45 value = rank + 1; 46 PetscCall(VecScale(global, value)); 47 48 PetscCall(VecView(global, viewer)); 49 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\nGlobal Vector:\n")); 50 PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 51 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\n")); 52 53 /* Send ghost points to local vectors */ 54 PetscCall(DMGlobalToLocalBegin(da, global, INSERT_VALUES, local)); 55 PetscCall(DMGlobalToLocalEnd(da, global, INSERT_VALUES, local)); 56 57 PetscCall(PetscOptionsGetBool(NULL, NULL, "-local_print", &flg, NULL)); 58 if (flg) { 59 PetscViewer sviewer; 60 61 PetscCall(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 62 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD, "\nLocal Vector: processor %d\n", rank)); 63 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 64 PetscCall(VecView(local, sviewer)); 65 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 66 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 67 PetscCall(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 68 } 69 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "\nLocal to global mapping\n")); 70 PetscCall(DMGetLocalToGlobalMapping(da, &is)); 71 PetscCall(ISLocalToGlobalMappingView(is, PETSC_VIEWER_STDOUT_WORLD)); 72 73 /* Free memory */ 74 PetscCall(PetscViewerDestroy(&viewer)); 75 PetscCall(VecDestroy(&global)); 76 PetscCall(VecDestroy(&local)); 77 PetscCall(DMDestroy(&da)); 78 PetscCall(PetscFinalize()); 79 return 0; 80 } 81 82 /*TEST 83 84 test: 85 nsize: 2 86 args: -nox 87 filter: grep -v " MPI process" 88 output_file: output/ex2_1.out 89 requires: x 90 91 test: 92 suffix: 2 93 nsize: 3 94 args: -wrap none -local_print -nox 95 filter: grep -v "Vec Object: Vec" 96 requires: x 97 98 test: 99 suffix: 3 100 nsize: 3 101 args: -wrap ghosted -local_print -nox 102 filter: grep -v "Vec Object: Vec" 103 requires: x 104 105 TEST*/ 106