quantum-espresso/EPW/examples/mgb2/phonons/ph.in

--
&inputph
  prefix   = 'MgB2',
  fildyn   = 'MgB2.dyn',
  amass(1) = 24.305,
  amass(2) = 10.811,
  outdir   = './'
  ldisp    = .true.,
  trans    = .true.,
  fildvscf = 'dvscf',
  nq1=6,
  nq2=6,
  nq3=6,
  tr2_ph   =  1.0d-14
 /