Si
Silicon
 &control
    calculation = 'scf'
    restart_mode='from_scratch',
    prefix='silicon',
    tstress = .true.
    tprnfor = .true.
    pseudo_dir = '$PSEUDO_DIR/',
    outdir='$TMP_DIR/'
 &end
 &system    
	ibrav=  2, 
	celldm(1) =10.20, 
	nat=  2, 
	ntyp= 1,
	ecutwfc =18.0, 
 &end
 &electrons
    mixing_beta = 0.7 
    conv_thr =  1.0d-8
 &end
ATOMIC_SPECIES
 Si  28.086  Si.vbc.UPF
ATOMIC_POSITIONS alat
 Si 0.00 0.00 0.00 
 Si 0.25 0.25 0.25 
K_POINTS tpiba 
  10
   0.1250000  0.1250000  0.1250000   1.00
   0.1250000  0.1250000  0.3750000   3.00
   0.1250000  0.1250000  0.6250000   3.00
   0.1250000  0.1250000  0.8750000   3.00
   0.1250000  0.3750000  0.3750000   3.00
   0.1250000  0.3750000  0.6250000   6.00
   0.1250000  0.3750000  0.8750000   6.00
   0.1250000  0.6250000  0.6250000   3.00
   0.3750000  0.3750000  0.3750000   1.00
   0.3750000  0.3750000  0.6250000   3.00