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Dear Professor Paulo</div>
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Thanks for your response.</div>
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<font size="2"><span style="font-size:11pt" class="ContentPasted0">-pd .true. is a command-line option of the code, not of mpirun, so:<br class="ContentPasted0">
mpirun [options] pw.x -pd .true. [other options]</span></font></div>
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>>> I have gathered that I misplaced the option. It works fine now.</div>
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Regards<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Paolo Giannozzi <paolo.giannozzi@uniud.it><br>
<b>Sent:</b> Wednesday, November 9, 2022 12:58 PM<br>
<b>To:</b> Quantum ESPRESSO users Forum <users@lists.quantum-espresso.org>; Elio Physics <Elio-Physics@live.com><br>
<b>Subject:</b> Re: [QE-users] The pencil decomposition option</font>
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<div class="PlainText">On 11/9/22 15:07, Elio Physics wrote:<br>
<br>
> there are processes with no planes. Use pencil decomposition (-pd .true.)<br>
> <br>
> How do I tell the code to use the pencil decomposition? I have tried <br>
> adding -pd to the 'mpirun' an adding use_pd=.true. in the PW inout but <br>
> in vain.<br>
<br>
-pd .true. is a command-line option of the code, not of mpirun, so:<br>
mpirun [options] pw.x -pd .true. [other options]<br>
<br>
Paolo<br>
-- <br>
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
Phone +39-0432-558216, fax +39-0432-558222<br>
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