[petsc-users] "Exact-ish" preallocation for (mostly) unstructured mesh with periodic boundary conditions?

[Ramsey, James J CIV (US)]

From: petsc-users-bounces at mcs.anl.gov [petsc-users-bounces at mcs.anl.gov] on behalf of Jed Brown [jedbrown at mcs.anl.gov]

> I can't tell what your question is. It appears that you are not considering elements in the overlap. If you don't have any overlap in your mesh, you need to communicate.

Basically, I'm trying to figure out *how* to communicate in a reasonably sane manner.

> http://lists.mcs.anl.gov/pipermail/petsc-users/2008-May/003020.html

What's at that URL looks like it may answer my question.