<div class="gmail_quote">On Thu, Dec 22, 2011 at 19:46, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com">knepley@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
dtol failure is impossible for GMRES (and CG). Consider checking with that.</blockquote></div><br><div>Well, if you turn of restarts in GMRES and if orthogonalization is working correctly.</div>