On Fri, Aug 17, 2012 at 9:59 AM, John Fettig <john.fettig at gmail.com> wrote:
> I'd be willing to live with the MatPtAP time, it is the > MatTransposeMatMult time that is really poor. Any idea why the latter > is so slow? > Mark, for a symmetric graph, how about using MatMatMult() here? Even for a non-symmetric problem, MatMatTransposeMult() is faster than MatTransposeMatMult(). -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120817/f784e911/attachment.html>
