Production
 &cntrl
  imin=0,
  ntx=5,
  irest=1,
  nstlim=30000,
  dt=0.002,
  ntf=2,
  ntc=2,
  temp0=300.0,
  ntpr=100,
  ntwx=100,
  cut=8.0,
  ntb=2,
  ntp=1,
  ntt=3,
  gamma_ln=2.0,
  ig=-1,
 /

