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

[Jed Brown]

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Acronyms like PCG were outdated before I was born, much like "digital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.
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