<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Thank you for the explanation.<div>Magali</div><div><br><div><div><div>On Aug 31, 2012, at 6:06 AM, Markus Bürg wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hello Magali,<br><blockquote type="cite">- When I change this back to 1e-12, the model runs fine on 4 <br></blockquote><blockquote type="cite">processors. Its interesting that<br></blockquote><blockquote type="cite">using this smaller accuracy is only a problem on 4 processors, does <br></blockquote><blockquote type="cite">that make any sense to you?<br></blockquote>This is one of the challenging tasks in using multiple processors. The <br>results are becoming a little bit different depending on the number of <br>processors on uses, because - briefly speaking - first the computations <br>start on every processor independently and then the results are put <br>together to form the global solution you obtain. Usually the <br>differences, which happen by these different distributions of data among <br>the processors, is neglectable small. But, since you have set the <br>tolerance to a really small value of 1e-15, these differences became <br>visible for you.<br><br>Best Regards,<br>Markus<br>_______________________________________________<br>Aspect-devel mailing list<br><a href="mailto:Aspect-devel@geodynamics.org">Aspect-devel@geodynamics.org</a><br>http://geodynamics.org/cgi-bin/mailman/listinfo/aspect-devel<br></div></blockquote></div><br><div apple-content-edited="true">
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Davis </div><div>Chair, Geology Graduate Program</div><div>Department of Geology & KeckCAVES</div><div>2129 Earth & Physical Sciences Bldg</div><div>Davis, CA 95616</div><div><br></div><div><div>E-mail: <a href="mailto:mibillen@ucdavis.edu">mibillen@ucdavis.edu</a></div><div>Phone: no extension, please e-mail</div></div><div>--------------------------------------------------</div></div></div></div></div></div><br></div></div></div></span></div></span></div></span></div></span></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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