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 CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help)); 22 CHKERRQ(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",280,480,600,200,&viewer)); 23 CHKERRQ(PetscViewerDrawGetDraw(viewer,0,&draw)); 24 CHKERRQ(PetscDrawSetDoubleBuffer(draw)); 25 26 /* Readoptions */ 27 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 28 CHKERRQ(PetscOptionsGetEnum(NULL,NULL,"-wrap",DMBoundaryTypes,(PetscEnum*)&bx,NULL)); 29 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 30 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 31 32 /* Create distributed array and get vectors */ 33 CHKERRQ(DMDACreate1d(PETSC_COMM_WORLD,bx,M,dof,s,NULL,&da)); 34 CHKERRQ(DMSetFromOptions(da)); 35 CHKERRQ(DMSetUp(da)); 36 CHKERRQ(DMView(da,viewer)); 37 CHKERRQ(DMCreateGlobalVector(da,&global)); 38 CHKERRQ(DMCreateLocalVector(da,&local)); 39 40 value = 1; 41 CHKERRQ(VecSet(global,value)); 42 43 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 44 value = rank+1; 45 CHKERRQ(VecScale(global,value)); 46 47 CHKERRQ(VecView(global,viewer)); 48 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nGlobal Vector:\n")); 49 CHKERRQ(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 50 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\n")); 51 52 /* Send ghost points to local vectors */ 53 CHKERRQ(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 54 CHKERRQ(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 55 56 CHKERRQ(PetscOptionsGetBool(NULL,NULL,"-local_print",&flg,NULL)); 57 if (flg) { 58 PetscViewer sviewer; 59 60 CHKERRQ(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 61 CHKERRQ(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal Vector: processor %d\n",rank)); 62 CHKERRQ(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 63 CHKERRQ(VecView(local,sviewer)); 64 CHKERRQ(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 65 CHKERRQ(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 66 CHKERRQ(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 67 } 68 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal to global mapping\n")); 69 CHKERRQ(DMGetLocalToGlobalMapping(da,&is)); 70 CHKERRQ(ISLocalToGlobalMappingView(is,PETSC_VIEWER_STDOUT_WORLD)); 71 72 /* Free memory */ 73 CHKERRQ(PetscViewerDestroy(&viewer)); 74 CHKERRQ(VecDestroy(&global)); 75 CHKERRQ(VecDestroy(&local)); 76 CHKERRQ(DMDestroy(&da)); 77 CHKERRQ(PetscFinalize()); 78 return 0; 79 } 80 81 /*TEST 82 83 test: 84 nsize: 2 85 args: -nox 86 filter: grep -v "MPI processes" 87 output_file: output/ex2_1.out 88 requires: x 89 90 test: 91 suffix: 2 92 nsize: 3 93 args: -wrap none -local_print -nox 94 filter: grep -v "Vec Object: Vec" 95 requires: x 96 97 test: 98 suffix: 3 99 nsize: 3 100 args: -wrap ghosted -local_print -nox 101 filter: grep -v "Vec Object: Vec" 102 requires: x 103 104 TEST*/ 105