1*c4762a1bSJed Brown 2*c4762a1bSJed Brown static char help[] = "Tests DMGlobalToLocal() for 3d DA with stencil width of 2.\n\n"; 3*c4762a1bSJed Brown 4*c4762a1bSJed Brown #include <petscdm.h> 5*c4762a1bSJed Brown #include <petscdmda.h> 6*c4762a1bSJed Brown 7*c4762a1bSJed Brown int main(int argc,char **argv) 8*c4762a1bSJed Brown { 9*c4762a1bSJed Brown PetscInt N = 3,M=2,P=4,dof=1,rstart,rend,i; 10*c4762a1bSJed Brown PetscInt stencil_width = 2; 11*c4762a1bSJed Brown PetscErrorCode ierr; 12*c4762a1bSJed Brown PetscMPIInt rank; 13*c4762a1bSJed Brown DMBoundaryType bx = DM_BOUNDARY_NONE,by = DM_BOUNDARY_NONE,bz = DM_BOUNDARY_NONE; 14*c4762a1bSJed Brown DMDAStencilType stencil_type = DMDA_STENCIL_STAR; 15*c4762a1bSJed Brown DM da; 16*c4762a1bSJed Brown Vec global,local; 17*c4762a1bSJed Brown 18*c4762a1bSJed Brown 19*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 20*c4762a1bSJed Brown ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr); 21*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL);CHKERRQ(ierr); 22*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL);CHKERRQ(ierr); 23*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-P",&P,NULL);CHKERRQ(ierr); 24*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL);CHKERRQ(ierr); 25*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-stencil_width",&stencil_width,NULL);CHKERRQ(ierr); 26*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-stencil_type",(PetscInt*)&stencil_type,NULL);CHKERRQ(ierr); 27*c4762a1bSJed Brown 28*c4762a1bSJed Brown ierr = DMDACreate3d(PETSC_COMM_WORLD,bx,by,bz,stencil_type,M,N,P,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,stencil_width,0,0,0,&da);CHKERRQ(ierr); 29*c4762a1bSJed Brown ierr = DMSetFromOptions(da);CHKERRQ(ierr); 30*c4762a1bSJed Brown ierr = DMSetUp(da);CHKERRQ(ierr); 31*c4762a1bSJed Brown ierr = DMCreateGlobalVector(da,&global);CHKERRQ(ierr); 32*c4762a1bSJed Brown ierr = VecGetOwnershipRange(global,&rstart,&rend);CHKERRQ(ierr); 33*c4762a1bSJed Brown for (i=rstart; i<rend; i++) {ierr = VecSetValue(global,i,(PetscReal)(i + 100*rank),INSERT_VALUES);CHKERRQ(ierr);} 34*c4762a1bSJed Brown ierr = VecAssemblyBegin(global);CHKERRQ(ierr); 35*c4762a1bSJed Brown ierr = VecAssemblyEnd(global);CHKERRQ(ierr); 36*c4762a1bSJed Brown ierr = DMCreateLocalVector(da,&local);CHKERRQ(ierr); 37*c4762a1bSJed Brown ierr = VecSet(local,-1);CHKERRQ(ierr); 38*c4762a1bSJed Brown ierr = DMGlobalToLocalBegin(da,global,INSERT_VALUES,local);CHKERRQ(ierr); 39*c4762a1bSJed Brown ierr = DMGlobalToLocalEnd(da,global,INSERT_VALUES,local);CHKERRQ(ierr); 40*c4762a1bSJed Brown if (!rank) {ierr = VecView(local,0);CHKERRQ(ierr);} 41*c4762a1bSJed Brown ierr = DMDestroy(&da);CHKERRQ(ierr); 42*c4762a1bSJed Brown ierr = VecDestroy(&local);CHKERRQ(ierr); 43*c4762a1bSJed Brown ierr = VecDestroy(&global);CHKERRQ(ierr); 44*c4762a1bSJed Brown ierr = PetscFinalize(); 45*c4762a1bSJed Brown return ierr; 46*c4762a1bSJed Brown } 47