<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>OK. Knowing that it used to work is already a god thing. Do you happen to have a vague idea of the last time it worked?</div>
</div></blockquote><div><br></div><div>Just use Aug 1st and test. Who knows, maybe there has always been a bug in the code? I haven't had time to test your example at all because I'm too busy with research at the moment.</div>
<div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Time for me to learn how to use hg dissect...</div></div></blockquote>
<div><br></div><div>It's `hg bisect` and here is the faq that deals with using bisection on PETSc:</div><div><br></div><div><a href="http://www.mcs.anl.gov/petsc/documentation/faq.html#bisect">http://www.mcs.anl.gov/petsc/documentation/faq.html#bisect</a></div>
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