[gmx-users] looping job: time not updating

[gromacs query]

Hi All

Though its mentioned here how to restart jobs:
http://www.gromacs.org/Documentation/How-tos/Extending_Simulations

but I tried to run something like this (by scripting) but copying here how
script is looping jobs:

#stage 1
grompp -f npt.mdp -c conf_1ns.gro -t state_1ns.cpt -p topol.top -o npt2.tpr
-n index.ndx
mdrun -s npt2.tpr -o traj_2ns.trr -e ener_2ns.edr -c conf_2ns.gro -g
md_2ns.log -cpo state_2ns.cpt

#stage2
grompp -f npt.mdp -c conf_2ns.gro -t state_2ns.cpt -p topol.top -o npt3.tpr
-n index.ndx
mdrun -s npt3.tpr -o traj_3ns.trr -e ener_3ns.edr -c conf_3ns.gro -g
md_3ns.log -cpo state_3ns.cpt


When I look in any log file it always start time at 0, what I have missed
here?

thanks
Jiom