500 ns Production
 &cntrl
  nstlim=250000000, dt=0.002, ntx=5, irest=1, ntpr=10000, ntwr=10000, ntwx=10000,

  temp0=300.0, ntt=1, tautp=2.0,
 
  ntb=2, ntp=1, barostat=2,

  ntc=2, ntf=2,
 
&end
