<div dir="ltr"><div><div><div>Hi Mohammed,<br><br></div> Good to hear that it is working now. If you start running EXX calculations with large numbers of MPI tasks, be sure to use band groups in order to obtain good performance.<br><br></div>Best,<br></div>Taylor<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 17, 2017 at 1:45 PM, Mohammed Khalafalla <span dir="ltr"><<a href="mailto:mahk74@gmail.com" target="_blank">mahk74@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><div>Dear Paolo,<br></div>Thank you. Compiling with option -D__EXX_ACE ruled out the problem. I suggest to append this info to the release note for v.6.1 as currently it indicates that ACE is activated by default.<br></div>Regards<br><br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 17 March 2017 at 20:29, 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">You need to activate ACE by compiling with option -D__EXX_ACE.<br>
<br>
I also noticed some slowdown after some recent major changes, but<br>
didn't take it seriously, since execution times on the HPC machine I<br>
used for testing tend to be quite stochastic<br>
<br>
Paolo<br>
<div class="m_-6001572794578836970HOEnZb"><div class="m_-6001572794578836970h5"><br>
On Fri, Mar 17, 2017 at 5:49 PM, Mohammed Khalafalla <<a href="mailto:mahk74@gmail.com" target="_blank">mahk74@gmail.com</a>> wrote:<br>
> Dear all,<br>
> I found that the hybrid calculation in QE version 6.1 to be slower than that<br>
> in v. 6. Kindly attached attached herewith the outputs from both versions.<br>
> Would this be due to ACE implementation in v.6.1?<br>
> Regards,<br>
> M. A. H. Khalafalla<br>
> Taibah University<br>
> Dept of Physics<br>
> KSA<br>
><br>
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<br>
</span><span class="m_-6001572794578836970HOEnZb"><font color="#888888">--<br>
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
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