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 PetscErrorCode ierr; 14 DM da; 15 PetscViewer viewer; 16 Vec local,global; 17 PetscScalar value; 18 PetscDraw draw; 19 PetscBool flg = PETSC_FALSE; 20 ISLocalToGlobalMapping is; 21 22 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 23 CHKERRQ(PetscViewerDrawOpen(PETSC_COMM_WORLD,0,"",280,480,600,200,&viewer)); 24 CHKERRQ(PetscViewerDrawGetDraw(viewer,0,&draw)); 25 CHKERRQ(PetscDrawSetDoubleBuffer(draw)); 26 27 /* Readoptions */ 28 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 29 CHKERRQ(PetscOptionsGetEnum(NULL,NULL,"-wrap",DMBoundaryTypes,(PetscEnum*)&bx,NULL)); 30 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 31 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 32 33 /* Create distributed array and get vectors */ 34 CHKERRQ(DMDACreate1d(PETSC_COMM_WORLD,bx,M,dof,s,NULL,&da)); 35 CHKERRQ(DMSetFromOptions(da)); 36 CHKERRQ(DMSetUp(da)); 37 CHKERRQ(DMView(da,viewer)); 38 CHKERRQ(DMCreateGlobalVector(da,&global)); 39 CHKERRQ(DMCreateLocalVector(da,&local)); 40 41 value = 1; 42 CHKERRQ(VecSet(global,value)); 43 44 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 45 value = rank+1; 46 CHKERRQ(VecScale(global,value)); 47 48 CHKERRQ(VecView(global,viewer)); 49 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nGlobal Vector:\n")); 50 CHKERRQ(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 51 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\n")); 52 53 /* Send ghost points to local vectors */ 54 CHKERRQ(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 55 CHKERRQ(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 56 57 CHKERRQ(PetscOptionsGetBool(NULL,NULL,"-local_print",&flg,NULL)); 58 if (flg) { 59 PetscViewer sviewer; 60 61 CHKERRQ(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 62 CHKERRQ(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal Vector: processor %d\n",rank)); 63 CHKERRQ(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 64 CHKERRQ(VecView(local,sviewer)); 65 CHKERRQ(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 66 CHKERRQ(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 67 CHKERRQ(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 68 } 69 CHKERRQ(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD,"\nLocal to global mapping\n")); 70 CHKERRQ(DMGetLocalToGlobalMapping(da,&is)); 71 CHKERRQ(ISLocalToGlobalMappingView(is,PETSC_VIEWER_STDOUT_WORLD)); 72 73 /* Free memory */ 74 CHKERRQ(PetscViewerDestroy(&viewer)); 75 CHKERRQ(VecDestroy(&global)); 76 CHKERRQ(VecDestroy(&local)); 77 CHKERRQ(DMDestroy(&da)); 78 ierr = PetscFinalize(); 79 return ierr; 80 } 81 82 /*TEST 83 84 test: 85 nsize: 2 86 args: -nox 87 filter: grep -v "MPI processes" 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