Stage 2 equilibration 1 0-5ns
 &cntrl
  imin=0, irest=1, ntx=5,
  nstlim=2500000, dt=0.002,
  ntc=2, ntf=2,
  ntt=1, tautp=0.5,
  tempi=325.0, temp0=325.0,
  ntpr=500, ntwx=500,
  ntb=0, igb=1,
  cut=999.,rgbmax=999.
 /
