[Pw_forum] phonon calculation

[Mohammad Saghayezhian]

Hi,

I want to perform a phonon calculation using QE 4.1.2. The scf calculation
runs properly, but when I run ph.x
it does not go forward and stuck in this step;


 Program PHONON    v.4.1.2  starts ...
     Today is 28Jun2011 at 10: 0:21

     Parallel version (MPI)

     Number of processors in use:      16
     K-points division:     npool     =    2
     R & G space division:  proc/pool =    8

     Ultrasoft (Vanderbilt) Pseudopotentials

The ph,in file is fine and runs well on other computres, here is the ph,in:

phonons
&inputph
  tr2_ph=1.0d-14,
  prefix='Au',
  ldisp=.true.,
  nq1=4 , nq2=4 , nq3=4,
  amass(1)=196.96655,
  outdir='/home-fs4/hp0070/data-stress/Au/LDA/FccC4.45/phonon/',
  fildyn='Au.dyn',
/

Do you have any idea why this happens?

any help would be appreciated.
thanks a lot


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Mohammad Saghayezhian
Computational Condensed Matter Research Lab
Physics Department, Isfahan University of Technology, Isfahan, Iran

Tel lab: +98 311 391 3731     Fax Office: +98311 391 3746
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