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 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 22 PetscCall(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",280,480,600,200,&viewer)); 23 PetscCall(PetscViewerDrawGetDraw(viewer,0,&draw)); 24 PetscCall(PetscDrawSetDoubleBuffer(draw)); 25 26 /* Readoptions */ 27 PetscCall(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 28 PetscCall(PetscOptionsGetEnum(NULL,NULL,"-wrap",DMBoundaryTypes,(PetscEnum*)&bx,NULL)); 29 PetscCall(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 30 PetscCall(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 31 32 /* Create distributed array and get vectors */ 33 PetscCall(DMDACreate1d(PETSC_COMM_WORLD,bx,M,dof,s,NULL,&da)); 34 PetscCall(DMSetFromOptions(da)); 35 PetscCall(DMSetUp(da)); 36 PetscCall(DMView(da,viewer)); 37 PetscCall(DMCreateGlobalVector(da,&global)); 38 PetscCall(DMCreateLocalVector(da,&local)); 39 40 value = 1; 41 PetscCall(VecSet(global,value)); 42 43 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 44 value = rank+1; 45 PetscCall(VecScale(global,value)); 46 47 PetscCall(VecView(global,viewer)); 48 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nGlobal Vector:\n")); 49 PetscCall(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 50 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\n")); 51 52 /* Send ghost points to local vectors */ 53 PetscCall(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 54 PetscCall(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 55 56 PetscCall(PetscOptionsGetBool(NULL,NULL,"-local_print",&flg,NULL)); 57 if (flg) { 58 PetscViewer sviewer; 59 60 PetscCall(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 61 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal Vector: processor %d\n",rank)); 62 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 63 PetscCall(VecView(local,sviewer)); 64 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 65 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 66 PetscCall(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 67 } 68 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal to global mapping\n")); 69 PetscCall(DMGetLocalToGlobalMapping(da,&is)); 70 PetscCall(ISLocalToGlobalMappingView(is,PETSC_VIEWER_STDOUT_WORLD)); 71 72 /* Free memory */ 73 PetscCall(PetscViewerDestroy(&viewer)); 74 PetscCall(VecDestroy(&global)); 75 PetscCall(VecDestroy(&local)); 76 PetscCall(DMDestroy(&da)); 77 PetscCall(PetscFinalize()); 78 return 0; 79 } 80 81 /*TEST 82 83 test: 84 nsize: 2 85 args: -nox 86 filter: grep -v " MPI process" 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