[petsc-users] restricted DMDAGlobaltoLocal

[Barry Smith]

On Nov 21, 2011, at 8:01 AM, Jed Brown wrote:

> On Mon, Nov 21, 2011 at 04:52, Hui Zhang <buyong.huier at gmail.com> wrote:
> When using DMDAGlobaltoLocal, how can I communicate only the boundary of the
> ghosted domain (with stecil width larger than one)?
> 
> Only the ghost values are communicated. The interior is all local.

   I think Hui means DMDALocalToLocalBegin() and DMDALocalToLocalEnd() but normally one doesn't need this with the PETSc solvers, one only needs the DMGlobalToLocalBegin/End()

   Barry