&control
 calculation = 'scf'
 prefix='GaAs',
 tstress = .true.
 tprnfor = .true.
 pseudo_dir = '../../../pseudo/',
 outdir='./work/'
 disk_io='low'
 wf_collect=.true.
/
&system
 ibrav = 2,
 celldm(1) = 10.68,
 nat = 2,
 ntyp = 2,
 ecutwfc = 35.0,
 ecutrho = 150.0,
 occupations = 'smearing'
 smearing = 'm-p'
 degauss = 0.01
 use_all_frac = .true.
/
&electrons
 mixing_beta = 0.7
 conv_thr = 1.0d-8
/
ATOMIC_SPECIES
Ga  68.926  Ga.pbe-dn-kjpaw_psl.0.2.UPF
As  74.922  As.pbe-n-kjpaw_psl.0.2.UPF 
ATOMIC_POSITIONS {crystal}
Ga 0.00 0.00 0.00
As 0.25 0.25 0.25
K_POINTS {automatic}
4 4 4 0 0 0
