<div dir="ltr">Maybe acronym becomes meaningless with time but AFAIK, this is the acronym still used in recent papers related to feti by even its developers. <br>Sorry to say that but for some people, feti is the only way to beat direct solvers.</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 29, 2014 at 9:31 PM, Jed Brown <span dir="ltr"><<a href="mailto:jed@jedbrown.org" target="_blank">jed@jedbrown.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">Alp Kalpalp <<a href="mailto:alpkalpalp@gmail.com">alpkalpalp@gmail.com</a>> writes:<br>
<br>
> Thanks for the answers,<br>
><br>
> Jed, PCPG stands for Preconditioned<br>
<br>
</span>Acronyms like PCG were outdated before I was born, much like "digital<br>
computer". All Krylov methods in PETSc are preconditioned; let's not<br>
contribute to meaningless acronyms.<br>
<span class=""><br>
> Conjugate Projected Gradient. Since any FETI literature suggests PCPG,<br>
> I am planning to go stick with it. My plan is to extend your KSPCG<br>
> algorithm with optional application of projection space and<br>
> re-orthogonalizations.<br>
<br>
</span>Great.<br>
</blockquote></div><br></div>