On Tue, Jun 12, 2012 at 11:12 AM, behzad baghapour < behzad.baghapour at gmail.com> wrote:
> Thank you. Now, I received the error which I should change Mat into mffd. *Always* include the entire error message! You have to assemble a matrix to use most preconditioners. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120612/0dec1e73/attachment.html>
