<div dir="ltr">Thank you for your reply,<div>For omp, I noticed that the calculation takes the 12 threads,</div><div>I compiled wien2k with intel cluster (2018) (ifort mpiifort+mkl)<br>The option file is in attachment<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le jeu. 27 août 2020 à 13:11, Peter Blaha <<a href="mailto:pblaha@theochem.tuwien.ac.at">pblaha@theochem.tuwien.ac.at</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Clearly, omp_global:12 is NOT efficient for lapw1. The diagonalization <br>
does not scale for so many cores.<br>
<br>
Otherwise it means that your mpi-installation (what are you using ? <br>
ifort, gfortran, which mpi, blas, scalapack, elpa, ...) is VERY bad.<br>
<br>
<br>
On 8/27/20 1:44 PM, karima Physique wrote:<br>
> Dear Wien2k users,<br>
> <br>
> A calculation with 38 equivalent atoms (96 inequivalent ), we found <br>
> that using lapw1 with omp_global is very faster than lapw1_mpi<br>
> machine file 1<br>
> omp_global: 12<br>
> 1: node1<br>
> machine file 2<br>
> 1: node1:12<br>
> Have you any comment on this?<br>
> <br>
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-- <br>
<br>
P.Blaha<br>
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Peter BLAHA, Inst.f. Materials Chemistry, TU Vienna, A-1060 Vienna<br>
Phone: +43-1-58801-165300 FAX: +43-1-58801-165982<br>
Email: <a href="mailto:blaha@theochem.tuwien.ac.at" target="_blank">blaha@theochem.tuwien.ac.at</a> WIEN2k: <a href="http://www.wien2k.at" rel="noreferrer" target="_blank">http://www.wien2k.at</a><br>
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