[gmx-users] about the run program in gromacs 4.0.3

[anirban polley]

Hi,
   I have run earlier in gromacs3.3.x version in parallel processor
but now I have installed gromacs4.0.3. But when I want to run program
in the gromacs4.0.3, it says that
...............................................
Invalid command line argument:
-np
...............................................
I am surprise by seeing it because I have run the same in older
version by writing
/home/anirban/gromacs/grompp  -np 8 -f grompp.mdp -p topol.top -c
pr.gro -o pr.tpr

Can you tell me what the wrong in the new version is? Why does the new
version of gromacs could not connect nodes and says that -np does not
valid.
Regards,
Anirban