1 static char help[] = "Test parallel ruotines for GLVis\n\n"; 2 3 #include <petscdmshell.h> 4 #include <petsc/private/glvisvecimpl.h> 5 6 PetscErrorCode VecView_Shell(Vec v, PetscViewer viewer) 7 { 8 PetscViewerFormat format; 9 PetscBool isglvis, isascii; 10 11 PetscFunctionBegin; 12 PetscCall(PetscViewerGetFormat(viewer, &format)); 13 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERGLVIS, &isglvis)); 14 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &isascii)); 15 if (isglvis) { 16 DM dm; 17 18 PetscCall(VecGetDM(v, &dm)); 19 /* DMView() cannot be tested, as DMView_Shell defaults to VecView */ 20 if (!dm) PetscFunctionReturn(PETSC_SUCCESS); 21 PetscCall(VecView_GLVis(v, viewer)); 22 } else if (isascii) { 23 const char *name; 24 PetscInt n; 25 26 PetscCall(VecGetLocalSize(v, &n)); 27 PetscCall(PetscObjectGetName((PetscObject)v, &name)); 28 if (!PetscGlobalRank) PetscCall(PetscViewerASCIIPrintf(viewer, "Hello from rank 0 -> vector name %s, size %" PetscInt_FMT "\n", name, n)); 29 } 30 PetscFunctionReturn(PETSC_SUCCESS); 31 } 32 33 PetscErrorCode DMSetUpGLVisViewer_Shell(PetscObject odm, PetscViewer viewer) 34 { 35 DM dm = (DM)odm; 36 Vec V; 37 PetscInt dim = 2; 38 const char *fec_type = {"testme"}; 39 40 PetscFunctionBegin; 41 PetscCall(DMCreateGlobalVector(dm, &V)); 42 PetscCall(PetscObjectSetName((PetscObject)V, "sample")); 43 PetscCall(PetscViewerGLVisSetFields(viewer, 1, &fec_type, &dim, NULL, (PetscObject *)&V, NULL, NULL)); 44 PetscCall(VecDestroy(&V)); 45 PetscFunctionReturn(PETSC_SUCCESS); 46 } 47 48 int main(int argc, char **argv) 49 { 50 DM dm; 51 Vec v; 52 53 PetscFunctionBeginUser; 54 PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 55 PetscCall(DMShellCreate(PETSC_COMM_WORLD, &dm)); 56 PetscCall(PetscObjectComposeFunction((PetscObject)dm, "DMSetUpGLVisViewer_C", DMSetUpGLVisViewer_Shell)); 57 PetscCall(VecCreateFromOptions(PETSC_COMM_WORLD, NULL, 1, 1, PETSC_DECIDE, &v)); 58 PetscCall(PetscObjectSetName((PetscObject)v, "seed")); 59 PetscCall(VecSetOperation(v, VECOP_VIEW, (void (*)(void))VecView_Shell)); 60 PetscCall(DMShellSetGlobalVector(dm, v)); 61 PetscCall(VecDestroy(&v)); 62 PetscCall(DMViewFromOptions(dm, NULL, "-dm_view")); 63 PetscCall(DMGetGlobalVector(dm, &v)); 64 PetscCall(VecViewFromOptions(v, NULL, "-vec_view")); 65 PetscCall(DMRestoreGlobalVector(dm, &v)); 66 PetscCall(PetscObjectComposeFunction((PetscObject)dm, "DMSetUpGLVisViewer_C", NULL)); 67 PetscCall(DMDestroy(&dm)); 68 PetscCall(PetscFinalize()); 69 return 0; 70 } 71 72 /*TEST 73 74 test: 75 suffix: glvis_par 76 nsize: {{1 2}} 77 args: -dm_view glvis: -vec_view glvis: 78 output_file: output/ex8_glvis.out 79 80 TEST*/ 81