[petsc-dev] DMGetMatrix --> DMGetMatrices?

[Dmitry Karpeev]

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.
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