On Wed, Jun 22, 2011 at 8:55 AM, John Fettig <john.fettig at gmail.com> wrote:
> I'm having trouble understanding how the size of off-diagonal matrix > is determined in the MPIAIJ format. For example, if I run on 2 > processors the global size is 4177x4177, but the local matrices are > > Rank 1: > 2089x2089 (diagonal block) > 2089x259 (off diagonal block) > > Rank2: > 2088x274 (off diagonal block) > 2088x2088 (diagonal block) > > Why isn't the off-diagonal block sized for all of the off-diagonal columns? It is compressed, so it only has columns that have a nonzero. Matt > > John > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110622/f71a6586/attachment-0001.htm>
