 &control
    calculation='scf',
    prefix='pb',
    pseudo_dir = '../../pp/',
    outdir='./',
    tprnfor = .true.,
    tstress = .true.,   
    wf_collect = .true.
 /
 &system    
    ibrav = 2, 
    celldm(1) = 9.2225583816, 
    nat=  1 , 
    ntyp = 1 , 
    ecutwfc = 90,
    occupations = 'smearing',
    degauss = 0.01
 /
 &electrons
    mixing_beta = 0.7,
    conv_thr =  1.0d-12
 /
ATOMIC_SPECIES
 Pb 207.2   pb_s.UPF
ATOMIC_POSITIONS crystal
Pb        0.000000000   0.000000000   0.000000000
K_POINTS AUTOMATIC
8 8 8 1 1 1
