1 2 static char help[] = "Tests mirror boundary conditions in 1-d.\n\n"; 3 4 #include <petscdm.h> 5 #include <petscdmda.h> 6 7 int main(int argc,char **argv) 8 { 9 PetscErrorCode ierr; 10 PetscInt M = 6,stencil_width = 1, dof = 1,m,xstart,i,j; 11 DM da; 12 Vec global,local; 13 PetscScalar **vglobal; 14 PetscViewer sviewer; 15 16 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 17 CHKERRQ(PetscOptionsGetInt(NULL,0,"-stencil_width",&stencil_width,0)); 18 CHKERRQ(PetscOptionsGetInt(NULL,0,"-dof",&dof,0)); 19 20 CHKERRQ(DMDACreate1d(PETSC_COMM_WORLD,DM_BOUNDARY_MIRROR,M,dof,stencil_width,NULL,&da)); 21 CHKERRQ(DMSetFromOptions(da)); 22 CHKERRQ(DMSetUp(da)); 23 CHKERRQ(DMDAGetCorners(da,&xstart,0,0,&m,0,0)); 24 25 CHKERRQ(DMCreateGlobalVector(da,&global)); 26 CHKERRQ(DMDAVecGetArrayDOF(da,global,&vglobal)); 27 for (i=xstart; i<xstart+m; i++) { 28 for (j=0; j<dof; j++) { 29 vglobal[i][j] = 100*(i+1) + j; 30 } 31 } 32 CHKERRQ(DMDAVecRestoreArrayDOF(da,global,&vglobal)); 33 34 CHKERRQ(DMCreateLocalVector(da,&local)); 35 CHKERRQ(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 36 CHKERRQ(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 37 38 CHKERRQ(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 39 CHKERRQ(VecView(local,sviewer)); 40 CHKERRQ(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer)); 41 CHKERRQ(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 42 CHKERRQ(VecView(global,PETSC_VIEWER_STDOUT_WORLD)); 43 44 CHKERRQ(DMDestroy(&da)); 45 CHKERRQ(VecDestroy(&local)); 46 CHKERRQ(VecDestroy(&global)); 47 48 ierr = PetscFinalize(); 49 return ierr; 50 } 51 52 /*TEST 53 54 test: 55 56 test: 57 suffix: 2 58 nsize: 2 59 filter: grep -v "Vec Object" 60 61 TEST*/ 62