On Tue, Nov 15, 2011 at 6:33 AM, Dominik Szczerba <dominik at itis.ethz.ch>wrote:
> Jacobi... > http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/PC/PCJACOBI.html Matt > On Tue, Nov 15, 2011 at 1:22 PM, Matthew Knepley <knepley at gmail.com> > wrote: > > 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 > > > -- 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/20111115/56310bcd/attachment.htm>
