On Thu, May 19, 2016 at 2:48 AM, Elias Karabelas < [email protected]> wrote:
> Dear all, > > I have a question about preconditioned solvers. So, I have a Sparsematrix, > say A, and now for some reason I would like to add some rank-one term u v^T > to that matrix. > As far as I know about Petsc, I can define the action of this matrix with > MatShell. But is it possible to adapt the preconditioner (like a AMG) of my > KSP to handle that kind of MatShell? > I do not know how you would do that. Its possible other people have ideas. Thanks, Matt > Kind Regards > Elias > > -- > Dr Elias Karabelas > > Medical University of Graz > Institute of Biophysics > Harrachgasse 21/IV > 8010 Graz, Austria > > Phone: +43 316 380 7759 > Email: [email protected] > Web : http://forschung.medunigraz.at/fodok/staff?name=EliasKarabelas > > -- 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
