&control
     calculation = 'scf'
     restart_mode='from_scratch'
     prefix='graphite',
     pseudo_dir='',
     outdir=''
 /
 &system
     ibrav=0,
     celldm(1)=1.0,
     nat=2,
     ntyp=1,
     ecutwfc=40.0,
     degauss=0.03,
     nbnd=8
 /
 &electrons
     mixing_beta = 0.5
     conv_thr =  1.0d-8
 /
ATOMIC_SPECIES
C 12.0 C.pw91-van_ak.UPF
CELL_PARAMETERS {hexagonal}
 4.0279528   2.325539   0.0000
 4.0279528  -2.325539   0.0000
 0.0000000   0.000000   20.000
ATOMIC_POSITIONS {crystal}
 C  0.0000000 0.0000000 0.0000000
 C  0.3333333 0.3333333 0.0000000
K_POINTS {automatic}
24 24 24 0 0 0