[petsc-users] symmetric matrix

Matthew Knepley knepley at gmail.com
Mon Dec 26 08:25:35 CST 2011

On Mon, Dec 26, 2011 at 8:14 AM, Alexander Grayver
<agrayver at gfz-potsdam.de>wrote:

> Hello all,
> I have two questions:
> 1. Is that possible to set MatSetOption(A,MAT_SPD,PETSC_**TRUE); through
> command line?


> 2. If I set option above for MPIAIJ matrix do solvers ignore lower
> triangular matrix?

No, they only do this for SBAIJ matrices. This is just a flag that can be


> 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/20111226/25a8dd91/attachment-0001.htm>

More information about the petsc-users mailing list