You have not preallocated the matrix correctly.<br><br> Matt<br><br><div class="gmail_quote">On Wed, Jun 10, 2009 at 1:10 PM, xiaoyin ji <span dir="ltr"><<a href="mailto:sapphire.jxy@gmail.com">sapphire.jxy@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi,<br>
<br>
I've just got a problem with MatSetValues. I have a loop of about 1<br>
million and 6 MatSetValues call inside. The loop runs very slow( about<br>
several minutes or more), but if I comment one or two MatSetValues<br>
then it will finish in seconds. Any hints? Thank you!<br>
<font color="#888888"><br>
Xiaoyin Ji<br>
</font></blockquote></div><br><br clear="all"><br>-- <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<br>