1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests DMGlobalToLocal() for 3d DA with stencil width of 2.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscdm.h> 5c4762a1bSJed Brown #include <petscdmda.h> 6c4762a1bSJed Brown 7c4762a1bSJed Brown int main(int argc,char **argv) 8c4762a1bSJed Brown { 9c4762a1bSJed Brown PetscInt N = 3,M=2,P=4,dof=1,rstart,rend,i; 10c4762a1bSJed Brown PetscInt stencil_width = 2; 11c4762a1bSJed Brown PetscErrorCode ierr; 12c4762a1bSJed Brown PetscMPIInt rank; 13c4762a1bSJed Brown DMBoundaryType bx = DM_BOUNDARY_NONE,by = DM_BOUNDARY_NONE,bz = DM_BOUNDARY_NONE; 14c4762a1bSJed Brown DMDAStencilType stencil_type = DMDA_STENCIL_STAR; 15c4762a1bSJed Brown DM da; 16c4762a1bSJed Brown Vec global,local; 17c4762a1bSJed Brown 18c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 19*5f80ce2aSJacob Faibussowitsch CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 20*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 21*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 22*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-P",&P,NULL)); 23*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL)); 24*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-stencil_width",&stencil_width,NULL)); 25*5f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-stencil_type",(PetscInt*)&stencil_type,NULL)); 26c4762a1bSJed Brown 27*5f80ce2aSJacob Faibussowitsch CHKERRQ(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)); 28*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetFromOptions(da)); 29*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMSetUp(da)); 30*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMCreateGlobalVector(da,&global)); 31*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecGetOwnershipRange(global,&rstart,&rend)); 32*5f80ce2aSJacob Faibussowitsch for (i=rstart; i<rend; i++) CHKERRQ(VecSetValue(global,i,(PetscReal)(i + 100*rank),INSERT_VALUES)); 33*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecAssemblyBegin(global)); 34*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecAssemblyEnd(global)); 35*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMCreateLocalVector(da,&local)); 36*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecSet(local,-1)); 37*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMGlobalToLocalBegin(da,global,INSERT_VALUES,local)); 38*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMGlobalToLocalEnd(da,global,INSERT_VALUES,local)); 39*5f80ce2aSJacob Faibussowitsch if (rank == 0) CHKERRQ(VecView(local,0)); 40*5f80ce2aSJacob Faibussowitsch CHKERRQ(DMDestroy(&da)); 41*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecDestroy(&local)); 42*5f80ce2aSJacob Faibussowitsch CHKERRQ(VecDestroy(&global)); 43c4762a1bSJed Brown ierr = PetscFinalize(); 44c4762a1bSJed Brown return ierr; 45c4762a1bSJed Brown } 46