SYSTEM = CO dimer in a box 
ISMEAR = 0 ! Gaussian smearing

EDIFF = 1E-6
ALGO  = Fast
ENCUT = 400 
SIGMA = 0.15
AMIX  = 0.4 

# dipole correction
LDIPOL = .TRUE.
IDIPOL = 3 
DIPOL  = 0.5 0.5  0.509

# structure relaxation w conjugate gradient
IBRION = 2 
POTIM  = 0.1 
EDIFFG = -0.05
NSW    = 10
