On Tue, Nov 15, 2011 at 5:17 AM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:
> What will happen if my matrix has (close to, or exactly) zeros on the > diagonal? Does Petsc handle such cases smartly somehow or am I right > to expect poor convergence (values close to zero) or failure (values > exactly zero)? > It would depend on what preconditioner you are using. Matt > Many thanks, > Dominik > -- 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/20111115/bd4e10a1/attachment.htm>
