Thanks Jed! I understand that MatCreateMPIAdj takes adjacency information and partition the matrix for me; what if I don't want it to partition for me, that I already have a particular partitioning?
I guess my question is, how do I tell Petsc to use my own partitioning? Thanks, Panruo On Sun, Apr 28, 2013 at 5:26 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote: > Panruo Wu <armiuswu at gmail.com> writes: > > > Hello, > > > > I have a question about the matrix distribution in Petsc. > > Can I define the distribution pattern as the output > > of graph partition software like METIS? Pointers > > to documentation/code about matrix distribution in Petsc > > would be very helpful. > > > http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Mat/MatCreateMPIAdj.html > > http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/MatOrderings/MatPartitioningCreate.html > > After applying the partitioning, relabel your mesh (or whatever is the > source of your problem), migrate that data, and create a new matrix > using the new distribution. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130428/0848e586/attachment.html>
