<div dir="ltr">Removed - Paolo<br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 19, 2015 at 11:24 PM, Marco Govoni <span dir="ltr"><<a href="mailto:mgovoni@uchicago.edu" target="_blank">mgovoni@uchicago.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Paolo, <div><br></div><div>West does not use anymore the pot parallelization. If it is not used anywhere else you can delete it. </div><div>I’ve just pushed QE to the limit and I’ve seen that having too many nested MPI communicators is bad. </div><div>The MPI at some point (large runs — in the order of >100k cores) cannot create communicators anymore. </div><div>I think that the pot parallelization is there because I’ve asked it, but I tried and succeeded in using the image parallelization instead. </div><div>So, on my side, pot can be safely removed and hopefully MPI will have more room for comm_create. </div><div>Thanks. </div><div><br></div><div>Best, </div><div><br></div><div>Marco</div><div><br></div><div>
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div>--</div><div><b>Marco Govoni, PhD.</b></div><div>Research Associate </div><div>Materials Science Division</div><div>Argonne National Laboratory </div><div>9700 Cass Avenue </div><div>Building 241</div><div>Argonne, IL 60439</div><div><a href="mailto:mgovoni@anl.gov" target="_blank">mgovoni@anl.gov</a></div><div>&</div><div><div>Institute for Molecular Engineering</div><div>The University of Chicago</div><div>5747 South Ellis Avenue; Jones Laboratory 221</div><div>Chicago, IL 60637</div></div><div><a href="mailto:mgovoni@uchicago.edu" target="_blank">mgovoni@uchicago.edu</a></div><div><a href="http://galligroup.uchicago.edu/People/mgovoni.php" target="_blank">http://galligroup.uchicago.edu/People/mgovoni.php</a></div></div></div>
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<br></div></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><span><font color="#888888">Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>Phone <a href="tel:%2B39-0432-558216" value="+390432558216" target="_blank">+39-0432-558216</a>, fax <a href="tel:%2B39-0432-558222" value="+390432558222" target="_blank">+39-0432-558222</a><br>
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