Step 1 of prod - 5 ns
&cntrl
    imin=0,
    ntx=5,
    irest=1,
    ntc=2,
    ntf=2,
    ntt=1,
    ntb=2,
    ntp=1,
    taup=2.0,
    cut=8.0,
    ntr=0,
    temp0=300.0,
    ig=0,
    dt=0.002,
    nstlim=2500000,
    ntpr=2000,
    ntwx=2000,
    ntwr=2000
/
