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INCAR:
SYSTEM = rutile Relax
ISTART = 0
ICHARG = 2
ENCUT  = 500
PREC   = Accurate
NELMIN = 4           #  do a minimum of four electronic steps
NELM   = 40          #  maximum of 40 electronic steps
EDIFF  = 1E-8
EDIFFG = -1E-6        #  high accuracy
ADDGRID = .TRUE.
IBRION =  -1
ISMEAR  = 0
SIGMA = 0.05
LREAL  = .False.
LWAVE  = .False.
LPLANE = .TRUE.   
NPAR   = 8       # twice the number of nodes
------------------------------------------------------------------------------
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INCAR

SYSTEM = rutile Relax
ISTART = 0
ICHARG = 11
ENCUT  = 500
PREC   = Accurate
NELMIN = 4           #  do a minimum of four electronic steps
NELM   = 40          #  maximum of 40 electronic steps
EDIFF  = 1E-8
EDIFFG = -1E-6        #  high accuracy
ADDGRID = .TRUE.
IBRION =  -1
ISMEAR  = 0
SIGMA = 0.05
LORBIT = 10
#EMIN = -15
#EMAX = 15
#NEDOS = 1000
LREAL  = .False.
LWAVE  = .False.
LPLANE = .TRUE.      
NPAR   = 8       # twice the number of nodes
-----------------------------------------------------------------------
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