On Wed, Nov 30, 2011 at 9:10 AM, Alexander Grayver <agrayver at gfz-potsdam.de>wrote:
> ** > 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? > Just use 1. Matt > 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> 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 > > > > -- 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/20111130/5fe8e842/attachment.htm>
