This is because you are running 4 kpt-parallel processes, and each is asking for 4 cores, i.e. 16 total. They interfere/clash, hence it is slower.
--- Prof Laurence Marks "Research is to see what everyone else has seen, and to think what nobody else has thought", Albert Szent-Gyorgi www.numis.northwestern.edu On Sat, Jun 22, 2019, 15:35 Wien2k User <wien2k.u...@gmail.com> wrote: > Dear Prof. P. Blaha; > > I did a test to compare the new machines file with the old for example > i have used 4 core CPU > the new > > 1:localhost > omp_global:4 > ..... > > with the old ; > 1:localhost > 1:localhost > 1:localhost > 1:localhost > > I noticed that the calculations with the new file are slower than with the > old one with a difference of 5 minutes for 1 cycle calculation of 23/28 > minutes > > > _______________________________________________ > Wien mailing list > Wien@zeus.theochem.tuwien.ac.at > > https://urldefense.proofpoint.com/v2/url?u=http-3A__zeus.theochem.tuwien.ac.at_mailman_listinfo_wien&d=DwICAg&c=yHlS04HhBraes5BQ9ueu5zKhE7rtNXt_d012z2PA6ws&r=U_T4PL6jwANfAy4rnxTj8IUxm818jnvqKFdqWLwmqg0&m=fypTr9PRHMWdeEVObsoqODSGR_k_KTwkVaxSK7ygM64&s=Msx21aASUOxt_vM9ko7T2j7sqxbgtRV5X1SID8hbL9o&e= > SEARCH the MAILING-LIST at: > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.mail-2Darchive.com_wien-40zeus.theochem.tuwien.ac.at_index.html&d=DwICAg&c=yHlS04HhBraes5BQ9ueu5zKhE7rtNXt_d012z2PA6ws&r=U_T4PL6jwANfAy4rnxTj8IUxm818jnvqKFdqWLwmqg0&m=fypTr9PRHMWdeEVObsoqODSGR_k_KTwkVaxSK7ygM64&s=bya__2KChacoHpbFbmX3ix9gd3ITHtm8iq2pQsC6CGc&e= >
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