On Mon, Aug 8, 2011 at 14:23, Barry Smith <bsmith@mcs.anl.gov> wrote:

We have a MatZeroRowsColumns() for MPIAIJ and SeqSBAIJ, what about having one for MPISBAIJ?

Of course this makes sense to have, but I don't think it solves the problem. How do you solve more than one system? How would you use this interface with SNES?