On Thu, Sep 3, 2009 at 12:54 PM, xiaoyin ji <sapphire.jxy at gmail.com> wrote:
> I thought the preconditioner with ksp solver is a vector where the > solver start to iterate and solve...so my idea is if I could set a > vector which is close to the solution as preconditioner, then ksp will > do less iteration. > It is not. I suggest Yousef Saad's book Iterative Methods for Sparse Linear Systems. Matt > Xiaoyin Ji > > > By the way, will there be a way to set a PETSc vector directly into a > >> preconditioner for the ksp solver? > >> > > > > Do not know what you mean here. > > > > Matt > > > > > >> Thanks! > >> > >> Best, > >> Xiaoyin Ji > >> > >> Department of Materials Science and Engineering > >> North Carolina State University > >> > > > > > > > > -- > > 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/20090903/9cc3bda5/attachment-0001.htm > > > > > > ------------------------------ > > > > _______________________________________________ > > petsc-users mailing list > > petsc-users at mcs.anl.gov > > https://lists.mcs.anl.gov/mailman/listinfo/petsc-users > > > > > > End of petsc-users Digest, Vol 9, Issue 3 > > ***************************************** > > > -- 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/20090903/0b10d2b6/attachment.htm>
