Dear Professor Paulo Thanks for your response.
-pd .true. is a command-line option of the code, not of mpirun, so: mpirun [options] pw.x -pd .true. [other options] >>> I have gathered that I misplaced the option. It works fine now. Regards ________________________________ From: Paolo Giannozzi <paolo.gianno...@uniud.it> Sent: Wednesday, November 9, 2022 12:58 PM To: Quantum ESPRESSO users Forum <users@lists.quantum-espresso.org>; Elio Physics <elio-phys...@live.com> Subject: Re: [QE-users] The pencil decomposition option On 11/9/22 15:07, Elio Physics wrote: > there are processes with no planes. Use pencil decomposition (-pd .true.) > > How do I tell the code to use the pencil decomposition? I have tried > adding -pd to the 'mpirun' an adding use_pd=.true. in the PW inout but > in vain. -pd .true. is a command-line option of the code, not of mpirun, so: mpirun [options] pw.x -pd .true. [other options] Paolo -- Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche, Univ. Udine, via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222
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