<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> A change in tfqmr that broke it? A change in some underlying thing that tfqmr that broke it.<br>
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The "correct" way to track down the "bad" change is to us bisection with mecurial <a href="http://www.selenic.com/mercurial/hg.1.html#bisect" target="_blank">http://www.selenic.com/mercurial/hg.1.html#bisect</a> it lets you quickly zoom into the change set that causes the change.</blockquote>
<div><br></div><div>Don't forget that since we don't use subrepositories you'll have to do a little bit extra to get buildsystem to work:</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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