[petsc-users] no decrease in iteration counts of KSPCG during time stepping

[Alp Kalpalp]

Maybe acronym becomes meaningless with time but AFAIK, this is the acronym
still used in recent papers related to feti by even its developers.
Sorry to say that but for some people, feti is the only way to beat direct
solvers.

On Mon, Dec 29, 2014 at 9:31 PM, Jed Brown <jed at jedbrown.org> wrote:

> Alp Kalpalp <alpkalpalp at gmail.com> writes:
>
> > Thanks for the answers,
> >
> > Jed, PCPG stands for Preconditioned
>
> Acronyms like PCG were outdated before I was born, much like "digital
> computer".  All Krylov methods in PETSc are preconditioned; let's not
> contribute to meaningless acronyms.
>
> > Conjugate Projected Gradient. Since any FETI literature suggests PCPG,
> > I am planning to go stick with it.  My plan is to extend your KSPCG
> > algorithm with optional application of projection space and
> > re-orthogonalizations.
>
> Great.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20141229/880cd9b2/attachment.html>