1 2 static char help[] = "Tests DMLocalToGlobal() for dof > 1\n\n"; 3 4 #include <petscdm.h> 5 #include <petscdmda.h> 6 7 int main(int argc,char **argv) 8 { 9 PetscInt M = 6,N = 5,m = PETSC_DECIDE,n = PETSC_DECIDE,i,j,is,js,in,jen; 10 PetscErrorCode ierr; 11 DM da; 12 Vec local,global; 13 PetscScalar ***l; 14 15 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 16 /* Create distributed array and get vectors */ 17 ierr = DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE,DMDA_STENCIL_BOX,M,N,m,n,3,1,NULL,NULL,&da);CHKERRQ(ierr); 18 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 19 ierr = DMSetUp(da);CHKERRQ(ierr); 20 ierr = DMCreateGlobalVector(da,&global);CHKERRQ(ierr); 21 ierr = DMCreateLocalVector(da,&local);CHKERRQ(ierr); 22 23 ierr = DMDAGetCorners(da,&is,&js,0,&in,&jen,0);CHKERRQ(ierr); 24 ierr = DMDAVecGetArrayDOF(da,local,&l);CHKERRQ(ierr); 25 for (i=is; i<is+in; i++) { 26 for (j=js; j<js+jen; j++) { 27 l[j][i][0] = 3*(i + j*M); 28 l[j][i][1] = 3*(i + j*M) + 1; 29 l[j][i][2] = 3*(i + j*M) + 2; 30 } 31 } 32 ierr = DMDAVecRestoreArrayDOF(da,local,&l);CHKERRQ(ierr); 33 ierr = DMLocalToGlobalBegin(da,local,ADD_VALUES,global);CHKERRQ(ierr); 34 ierr = DMLocalToGlobalEnd(da,local,ADD_VALUES,global);CHKERRQ(ierr); 35 36 ierr = VecView(global,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 37 38 /* Free memory */ 39 ierr = VecDestroy(&local);CHKERRQ(ierr); 40 ierr = VecDestroy(&global);CHKERRQ(ierr); 41 ierr = DMDestroy(&da);CHKERRQ(ierr); 42 ierr = PetscFinalize(); 43 return ierr; 44 } 45 46 47 48 /*TEST 49 50 test: 51 filter: grep -v -i Process 52 output_file: output/ex24_1.out 53 54 test: 55 suffix: 2 56 nsize: 2 57 filter: grep -v -i Process 58 output_file: output/ex24_2.out 59 60 test: 61 suffix: 3 62 nsize: 3 63 filter: grep -v -i Process 64 output_file: output/ex24_2.out 65 66 test: 67 suffix: 4 68 nsize: 4 69 filter: grep -v -i Process 70 output_file: output/ex24_2.out 71 72 test: 73 suffix: 5 74 nsize: 5 75 filter: grep -v -i Process 76 output_file: output/ex24_2.out 77 78 test: 79 suffix: 6 80 nsize: 6 81 filter: grep -v -i Process 82 output_file: output/ex24_2.out 83 84 TEST*/ 85