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 CHKERRQ(PetscViewerGetFormat(viewer,&format)); 13 CHKERRQ(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERGLVIS,&isglvis)); 14 CHKERRQ(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii)); 15 if (isglvis) { 16 DM dm; 17 18 CHKERRQ(VecGetDM(v,&dm)); 19 /* DMView() cannot be tested, as DMView_Shell defaults to VecView */ 20 if (!dm) PetscFunctionReturn(0); 21 CHKERRQ(VecView_GLVis(v,viewer)); 22 } else if (isascii) { 23 const char* name; 24 PetscInt n; 25 26 CHKERRQ(VecGetLocalSize(v,&n)); 27 CHKERRQ(PetscObjectGetName((PetscObject)v,&name)); 28 if (!PetscGlobalRank) { 29 CHKERRQ(PetscViewerASCIIPrintf(viewer,"Hello from rank 0 -> vector name %s, size %D\n",name,n)); 30 } 31 } 32 PetscFunctionReturn(0); 33 } 34 35 PetscErrorCode DMSetUpGLVisViewer_Shell(PetscObject odm, PetscViewer viewer) 36 { 37 DM dm = (DM)odm; 38 Vec V; 39 PetscInt dim = 2; 40 const char *fec_type = { "testme" }; 41 42 PetscFunctionBegin; 43 CHKERRQ(DMCreateGlobalVector(dm,&V)); 44 CHKERRQ(PetscObjectSetName((PetscObject)V,"sample")); 45 CHKERRQ(PetscViewerGLVisSetFields(viewer,1,&fec_type,&dim,NULL,(PetscObject*)&V,NULL,NULL)); 46 CHKERRQ(VecDestroy(&V)); 47 PetscFunctionReturn(0); 48 } 49 50 int main(int argc, char **argv) 51 { 52 DM dm; 53 Vec v; 54 55 CHKERRQ(PetscInitialize(&argc,&argv,NULL,help)); 56 CHKERRQ(DMShellCreate(PETSC_COMM_WORLD,&dm)); 57 CHKERRQ(PetscObjectComposeFunction((PetscObject)dm,"DMSetUpGLVisViewer_C",DMSetUpGLVisViewer_Shell)); 58 CHKERRQ(VecCreateMPI(PETSC_COMM_WORLD,1,PETSC_DECIDE,&v)); 59 CHKERRQ(PetscObjectSetName((PetscObject)v,"seed")); 60 CHKERRQ(VecSetOperation(v,VECOP_VIEW,(void (*)(void))VecView_Shell)); 61 CHKERRQ(DMShellSetGlobalVector(dm,v)); 62 CHKERRQ(VecDestroy(&v)); 63 CHKERRQ(DMViewFromOptions(dm,NULL,"-dm_view")); 64 CHKERRQ(DMGetGlobalVector(dm,&v)); 65 CHKERRQ(VecViewFromOptions(v,NULL,"-vec_view")); 66 CHKERRQ(DMRestoreGlobalVector(dm,&v)); 67 CHKERRQ(DMDestroy(&dm)); 68 CHKERRQ(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