[QE-users] ph.x Not writing all the dynamical matrices files

Lorenzo Paulatto lorenzo.paulatto at cnrs.fr
Tue Oct 31 12:10:24 CET 2023


Dear Eesha,

you should provide the output as well, because nobody is going to spend 
15 minutes to rerun your calculations just to find out what is going on.

kind regards


On 10/31/23 10:58, Eesha Sanjay Andharia wrote:
> Hi everyone,
>    I tried using ph.x with ldisp = true for calculating phonon 
> dispersion relations. See attached along with pwscf.in file.
> However, it only writes dyn0 -a list of q-points and does not 
> calculate the dynamical matrices at those q-points. I tried running 
> using different versions and different clusters as well, however, the 
> output is the same. No .dyn files.
>
> Is there something wrong with my scf calculations? I cannot pinpoint 
> anything specific.
> Or do we need to do gamma point and q not equal to 0 calculations 
> before using ldisp = true?
> Please help.
>
> Thanks!
> Eesha
>
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Dr. Lorenzo Paulatto
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