<div dir="ltr">On Thu, Oct 24, 2013 at 11:31 AM, Jed Brown <span dir="ltr"><<a href="mailto:jedbrown@mcs.anl.gov" target="_blank">jedbrown@mcs.anl.gov</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">Matthew Knepley <<a href="mailto:knepley@gmail.com">knepley@gmail.com</a>> writes:<br>
> I think we can differentiate between mathematical background and analysis,<br>
> e.g.<br>
><br>
> Proving that GMRES converges with these matrices, etc.<br>
><br>
> and showing exactly how to structure an algorithm:<br>
><br>
> Saad and Schultz, 96<br>
<br>
</div>*86*, but what about GCR? After all, GMRES is an incremental<br></blockquote><div><br></div><div>I'm getting too old.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
modification of GCR. It also contains mispredictions like:<br></blockquote><div><br></div><div>I would argue that Saad's implementation suggestions (like incremental QR) are</div><div>much better than the GCR and justify an independent citation.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
"In practical implementation it is usually more suitable to replace<br>
the Gram-Schmidt algorithm of step 2 by the modified Gram-Schmidt<br>
algorithm"<br>
<br>
If someone uses LGMRES, would we produce a citation only to Baker et al,<br></blockquote><div><br></div><div>Only to Baker. This should be easy since SS would be associated with GMRES.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
or also to Saad & Schultz? What about the BiCG family, containing many<br>
more variants that are slight variations on existing methods? Or<br></blockquote><div><br></div><div>We need to build in support for selection with options I think.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
identical methods that were published twice under different names?<br>
</blockquote></div><br>Cite both.</div><div class="gmail_extra"><br></div><div class="gmail_extra"> Matt<br clear="all"><div><br></div>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>
-- Norbert Wiener
</div></div>