<div dir="ltr"><div>Actually it seems related to nonuniform division of the FFT grid across processors: with 8 processors it works for fft grid=32x32x32, not for 36x36x36. Definitely a bug<br><br></div>Paolo<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 18, 2015 at 9:15 AM, Paolo Giannozzi <span dir="ltr"><<a href="mailto:p.giannozzi@gmail.com" target="_blank">p.giannozzi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>It is related to the real-space treatment of augmentation charge (option tqr=.true.). It works with 2 and 4 processors but not on 8. It is a rather extreme case (8 processors for a rather small system) but this shouldn't happen.<br><br></div>Paolo<br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Tue, Aug 18, 2015 at 7:29 AM, Mostafa Youssef <span dir="ltr"><<a href="mailto:myoussef@mit.edu" target="_blank">myoussef@mit.edu</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Dear all,<br>
<br>
I tried to run the standard tests of PWscf both in series and in parallel. In series all is fine. In parallel, I found the case of <a href="http://berry.in" target="_blank">berry.in</a> to be problematic as I got an error:<br>
<br>
Error in routine addusdens_r (1):<br>
WRONG CHARGE expected 44.000000, found 44.404701: ions may be overlapping or increase ecutrho<br>
<br>
And the code stops at the first scf step. When I double the energy and charge density cutoffs , it works well in parallel. This behavior is reproduced in versions 5.1.1, 5.1.2, and 5.2.0.<br>
<br>
Any thoughts on the possible reasons are appreciated.<br>
<br>
<br>
Thank you,<br>
Mostafa Youssef<br>
MIT<br>
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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></font></span></span></div></div></div></div>
</font></span></div>
</blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><span><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></font></span></span></div></div></div></div>
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