[petsc-dev] DMDA_*PERIODIC and DMDA_XYZGHOSTED

[Jed Brown]

On Tue, Dec 7, 2010 at 21:25, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote:

> As far as I can tell, the "local form" idea implies some mesh with a
> stencil or overlap behind a Vec,
> which by itself is a purely algebraic construct. Does this mean that we are
> injecting some geometry
> into Vec's semantics?
>

Certainly not geometry.  It's topologically-derived information which
currently sits in VecScatter (ignoring VecGhost for now).

Jed
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