[petsc-users] Pulling submeshes out of a DMPlex object

[Lawrence Mitchell]

On 6 Sep 2017, at 20:58, Matthew Knepley <knepley at gmail.com> wrote:

>> 1. The locally visible part of a distributed mesh (so that I can
>> discretise and solve independent problems on each local part)
> 
> This is already a standalone Plex. If you delete the PetscSF, it never knows anyone else is out there :)

So I'd Dmclone and then delete the point SF. Do I not also need to replace the communicator on the DM so that VecCreate DTRT.

I'll follow up to the rest with some examples probably next week.

Lawrence
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