Hello
It is hard to say what happened without a look at the outputs. Could you send 
the output of the nq=3,3,3 calculations?
One hypothesis that it is better to check is that you first did the calculation 
with nq =2,2,2 and then the one with nq = 3,3,3 using the same prefix. Because 
recover is set to true, the program could have been detoured by possibly 
preexisting status files it read trying to recover data from the previous 
calculation.

Best regards
Pietro

________________________________
From: users <[email protected]> on behalf of Soham Ghosh 
<[email protected]>
Sent: Wednesday, July 10, 2024 23:54
To: [email protected] <[email protected]>
Subject: [QE-users] Empty dynamical matrices files

Hello QE users and experts,

In my phonon calculations, some of the dynamical files seem to not be written, 
even though ph.x runs fine and the calculation is complete. The files are 
created, but are empty. I have tested this with QE-7.3 and QE-7.0. Can you 
kindly help me with understanding why?

My ph.in is as follows:


--

&inputph

  prefix   = 'H3S_270_2x2x2',

  fildyn   = 'H3S_270_2x2x2.dyn',

  amass(1) = 32.065,

  amass(2) = 1.00794,

  outdir   = './'

  ldisp    = .true.,

  trans    = .true.,

  fildvscf = 'dvscf',

  nq1=3,

  nq2=3,

  nq3=3,

  tr2_ph   =  1.0d-14

  recover = .true.

 /


For (nq1, nq2, nq3) = (2,2,2) I do get meaningful dynamical matrix files.

Best,
Soham Ghosh.
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