On Thu, Feb 9, 2012 at 11:56 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
> On Thu, Feb 9, 2012 at 23:51, Dmitry Karpeev <karpeev at mcs.anl.gov> wrote: > >> Good point. It is still strange, however, that SNES insists on using the >> same Mat obtained from DMGetMatrix for J and P. > > > Oh, you're concerned about when SNES creates a Mat automatically (getting > it out of the DM)? > Yes. And, by the way, preallocation for J and P could be different (e.g., mass matrix vs lumped mass matrix for projection problems). As could be the preferred MatType. Dmitry. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20120210/97f1b4b9/attachment.html>
