<div class="gmail_quote">On Sat, Mar 17, 2012 at 10:52, Gerard Gorman <span dir="ltr"><<a href="mailto:g.gorman@imperial.ac.uk">g.gorman@imperial.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div id=":1yv">Ah! One of those files *was* from a different run. Here are the correct<br>
files for comparison (this time compiled with -O3). Sorry for the confusion.<br></div></blockquote></div><br><div>This looks like a _tiny_ problem size. Like a few thousand degrees of freedom total. That is small enough that you even be seeing things like cache line write contention. Also, how is this matrix ordered? How much difference do you see if you reorder it (e.g. with RCM) before the solve?</div>