You are using more CPUs than there are planes of charge density in the FFT grid. Use less cpu or "-pd .true." option
hth Dr. Lorenzo Paulatto IdR @ IMPMC - CNRS UMR 7590 & Sorbonne Université phone: +33 (0)1 442 79822 / skype: paulatz http://www.impmc.upmc.fr/~paulatto/ (https://link.getmailspring.com/link/39c67529-25a6-4931-be91-154856417...@getmailspring.com/0?redirect=http%3A%2F%2Fwww.impmc.upmc.fr%2F~paulatto%2F&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D) - https://anharmonic.github.io/ (https://link.getmailspring.com/link/39c67529-25a6-4931-be91-154856417...@getmailspring.com/1?redirect=https%3A%2F%2Fanharmonic.github.io%2F&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D) 23-24/423 B115, 4 place Jussieu 75252 Paris CX 05 On Dec 7 2021, at 10:49 am, Michal Husak <michal.hu...@vscht.cz> wrote: > I am trying to run QE 6.8 on a supercomputer node with 128 cores ... > I use pure MPI parallelization > Run on 16 and 32 cores works OK ... > > Run on 64+ cores ends with following error: > Error in routine fft_type_set (6): > there are processes with no planes. Use pencil decomposition (-pd .true.) > > Can anybody explain what it means ? > Is my system to simple to it can not feed all cores ? > Where can I enter the -pd .true. option ? > > Michal Husak > UCT Prague > > _______________________________________________ > Quantum ESPRESSO is supported by MaX (www.max-centre.eu) > users mailing list users@lists.quantum-espresso.org > https://lists.quantum-espresso.org/mailman/listinfo/users >
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