<div class="gmail_quote">On Thu, Feb 24, 2011 at 12:14, Klaij, Christiaan <span dir="ltr"><<a href="mailto:C.Klaij@marin.nl">C.Klaij@marin.nl</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":4h3">
I'm using FGMRES but apparently it doesn't support diagonal scaling.</div></blockquote></div><br><div>GCR also tolerates a variable preconditioner and it does not have such a check. I don't know if that means it can use diagonal scaling or just that someone forgot to check, but you could try it.</div>