1 2 static char help[] = "Tests mirror boundary conditions in 2-d.\n\n"; 3 4 #include <petscdm.h> 5 #include <petscdmda.h> 6 7 int main(int argc,char **argv) 8 { 9 PetscInt M = 8, N = 8,stencil_width = 1, dof = 1,m,n,xstart,ystart,i,j,c; 10 DM da; 11 Vec global,local; 12 PetscScalar ***vglobal; 13 PetscViewer sview; 14 15 CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help)); 16 CHKERRQ(PetscOptionsGetInt(NULL,0,"-stencil_width",&stencil_width,0)); 17 CHKERRQ(PetscOptionsGetInt(NULL,0,"-dof",&dof,0)); 18 19 CHKERRQ(DMDACreate2d(PETSC_COMM_WORLD,DM_BOUNDARY_MIRROR,DM_BOUNDARY_MIRROR,DMDA_STENCIL_STAR,M,N,PETSC_DECIDE,PETSC_DECIDE,dof,stencil_width,NULL,NULL,&da)); 20 CHKERRQ(DMSetFromOptions(da)); 21 CHKERRQ(DMSetUp(da)); 22 CHKERRQ(DMDAGetCorners(da,&xstart,&ystart,0,&m,&n,0)); 23 24 CHKERRQ(DMCreateGlobalVector(da,&global)); 25 CHKERRQ(DMDAVecGetArrayDOF(da,global,&vglobal)); 26 for (j=ystart; j<ystart+n; j++) { 27 for (i=xstart; i<xstart+m; i++) { 28 for (c=0; c<dof; c++) { 29 vglobal[j][i][c] = 100*j + 10*(i+1) + c; 30 } 31 } 32 } 33 CHKERRQ(DMDAVecRestoreArrayDOF(da,global,&vglobal)); 34 35 CHKERRQ(DMCreateLocalVector(da,&local)); 36 CHKERRQ(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 37 CHKERRQ(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 38 39 CHKERRQ(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sview)); 40 CHKERRQ(VecView(local,sview)); 41 CHKERRQ(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sview)); 42 CHKERRQ(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 43 CHKERRQ(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 44 45 CHKERRQ(DMDestroy(&da)); 46 CHKERRQ(VecDestroy(&local)); 47 CHKERRQ(VecDestroy(&global)); 48 49 CHKERRQ(PetscFinalize()); 50 return 0; 51 } 52 53 /*TEST 54 55 test: 56 57 test: 58 suffix: 2 59 nsize: 4 60 filter: grep -v "Vec Object" 61 62 TEST*/ 63