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 ierr = PetscOptionsGetInt(NULL,0,"-stencil_width",&stencil_width,0);CHKERRQ(ierr); 18 ierr = PetscOptionsGetInt(NULL,0,"-dof",&dof,0);CHKERRQ(ierr); 19 20 ierr = DMDACreate1d(PETSC_COMM_WORLD,DM_BOUNDARY_MIRROR,M,dof,stencil_width,NULL,&da);CHKERRQ(ierr); 21 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 22 ierr = DMSetUp(da);CHKERRQ(ierr); 23 ierr = DMDAGetCorners(da,&xstart,0,0,&m,0,0);CHKERRQ(ierr); 24 25 ierr = DMCreateGlobalVector(da,&global);CHKERRQ(ierr); 26 ierr = DMDAVecGetArrayDOF(da,global,&vglobal);CHKERRQ(ierr); 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 ierr = DMDAVecRestoreArrayDOF(da,global,&vglobal);CHKERRQ(ierr); 33 34 ierr = DMCreateLocalVector(da,&local);CHKERRQ(ierr); 35 ierr = DMGlobalToLocalBegin(da,global,INSERT_VALUES,local);CHKERRQ(ierr); 36 ierr = DMGlobalToLocalEnd(da,global,INSERT_VALUES,local);CHKERRQ(ierr); 37 38 ierr = PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);CHKERRQ(ierr); 39 ierr = VecView(local,sviewer);CHKERRQ(ierr); 40 ierr = PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD,PETSC_COMM_SELF,&sviewer);CHKERRQ(ierr); 41 ierr = PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 42 ierr = VecView(global,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 43 44 ierr = DMDestroy(&da);CHKERRQ(ierr); 45 ierr = VecDestroy(&local);CHKERRQ(ierr); 46 ierr = VecDestroy(&global);CHKERRQ(ierr); 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