 &control
    calculation = 'scf'
    restart_mode='from_scratch',
    prefix='silicon',
    tprnfor = .true.
    pseudo_dir = '../../pseudo/'
    outdir = './'
    wf_collect = .TRUE.
 /
 &system    
    ibrav=  2, celldm(1) =10.599478, nat=  2, ntyp= 1,
    ecutwfc =30.0,  nbnd = 16
    nr1 = 32
    nr2 = 32
    nr3 = 32
 /
 &electrons
    mixing_mode = 'plain'
    mixing_beta = 0.7 
    conv_thr =  1.0d-8
 /
ATOMIC_SPECIES
 Si  28.086  Si.pz-vbc.UPF
ATOMIC_POSITIONS (alat)
 Si 0.00 0.00 0.00 
 Si 0.25 0.25 0.25 
K_POINTS {automatic}
  4 4 4 1 1 1
