<div dir="ltr">Hi,<div><br></div><div>I received an alert for the system manager of the cluster here due to the excess of the system CPU consumption of the jobs I am running using the QE code. As far as I understand it is running not in the best way and calculation may be slower than it should be. </div><div><br></div><div>I will set the OMP_NUM_THREADS to 1 and look at the system CPU behavior. I will let know the result.</div><div><br></div><div>Thank you very much for the answers,</div><div><br></div><div>Verónica</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jun 3, 2016 at 12:46 PM, Suchit <span dir="ltr"><<a href="mailto:such.engr@gmail.com" target="_blank">such.engr@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">Hi Veronica,<div>Setting the number of threads to 1 will help and I recently found myself that on my system the calculations were running much slower at the default value for OMP_NUM_THREADS. In addition, you should also make sure that you're specifying good parallelization parameters. The web-page below provides some tips and also some symptoms of less than ideal parellization. Hope this helps!</div><div><br></div><div><a href="http://www.quantum-espresso.org/wp-content/uploads/Doc/pw_user_guide/node18.html" target="_blank">http://www.quantum-espresso.org/wp-content/uploads/Doc/pw_user_guide/node18.html</a><br></div><div><br></div><div>Best Regards,</div><div>--Suchit</div></div>
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