I'm not sure that MAT(S)BAIJ is what I need. My matrix symmetric, but not block. Well, I solve vector equations and there are 2-3 blocks (depending on the problem dimension), but this blocks normaly have size of > 10^5. So which block size should I specify to be efficient?
Regards, Alexander On 30.11.2011 14:27, Alexander Grayver wrote: > Thanks Matt! > > Regards, > Alexander > > On 30.11.2011 14:16, Matthew Knepley wrote: >> On Wed, Nov 30, 2011 at 3:43 AM, Alexander Grayver >> <agrayver at gfz-potsdam.de <mailto:agrayver at gfz-potsdam.de>> wrote: >> >> Hello, >> >> I'm trying to use mumps through PETSc now with symmetric matrix >> and cholesky factorization. >> When I use it directly I fill up only upper part of the matrix >> and set mumid%SYM = 2. Is that possible to follow same way with >> petsc? >> Which options do I have to choose? >> >> >> http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/Mat/MATSBAIJ.html >> >> Matt >> >> Thanks in advance. >> >> Regards, >> Alexander >> >> >> >> >> -- >> 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/20111130/0d58b487/attachment-0001.htm>
