<div class="gmail_quote">On Tue, Jun 12, 2012 at 11:12 AM, behzad baghapour <span dir="ltr"><<a href="mailto:behzad.baghapour@gmail.com" target="_blank">behzad.baghapour@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thank you. Now, I received the error which I should change Mat into mffd.</blockquote></div><br><div><font color="#ff0000" size="4"><b>Always</b> include the entire error message!</font></div><div><font size="4" color="#ff0000"><br>
</font></div><div>You have to assemble a matrix to use most preconditioners.</div>