&control
    calculation='scf',
    title='t',
    verbosity='high',
    restart_mode='from_scratch',
    prefix='t'
    pseudo_dir='/root/pseudo/',
    outdir='/scr',
 /
 &system
    ibrav= 1,
    celldm(1)= 16.0,
    nat=1,
    ntyp=1,
    ecutwfc = 40.0,
    ecutrho = 400.0,
    occupations='fixed',
    nspin=2,
    tot_magnetization=2.0,    
    nosym=.true.,
    nbnd = 6,
 /
 &electrons
    conv_thr =  1.0d-7,
    mixing_mode='plain',
    mixing_beta = 0.4,
    diagonalization='david',
 /
ATOMIC_SPECIES
O  1.0 O.pbe-rrkjus.UPF
ATOMIC_POSITIONS angstrom
O        0.000000   0.000000   0.000000
K_POINTS gamma
OCCUPATIONS
1 1 1 1 0 0
1 1 0 0 0 0