[petsc-dev] Natural numbering for unstructured meshes

Jed Brown jed at jedbrown.org
Mon Feb 17 17:14:57 CST 2014

Andrés Alessandro León Baldelli <a.leon.baldelli at gmail.com> writes:

> Hi all, 
> I am working with Blaise Bourdin on implementing a concept of “natural numbering” for unstructured meshes using DMplex.
> Such natural numbering can be, e.g., that of the mesh prior to parallel distribution. 
> I have a working example in which I compute a field on the distributed DM and I scatter it back to the serial DM on rank0 but I would like to create a more general interface. To this regard I ask your advice:
> 1) Is it reasonable to add an SF within the DM typedef for this "natural to global” scatter?

Surely you don't want the (necessarily non-scalable) serial DM to be a
necessary part of this interface?  What do you want to do with this
natural numbering?  Just write output files?
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