Hi anton,

We have tried the benchmark files from the gromacs website and we 
could easily see the scaleup of the cluster but the time is

still not optimized compared with the benchmark. We run GROMACS 
3.1 on RedHat linux 8, Kernel 2.4.20. We also have

MOSIX installed. This kernel was compiled by us to implement MOSIX 
on the cluster. The following are the specifications of

the system we use...

System harware was that of default IBM Netvista.

1. Intel Pentium III (1GHZ)
2. 100Mbits ethernet card (Intel)
3. 256 Mb RAM on the server node and 128 Mb RAM on all other 
nodes.

Linux : 	Redhat Linux 8
Kernel : 	2.4.20 (downloaded and compiled from kernel.org)
LAM:  	lam-usysv-6.5.9 with "rsh" RPI.

We use the folowing commands....

1.grompp -v .........-np 16
2.mpirun N -lamd -nger -nsigs mdrun -v -s ........

I always generate an error if i use -c2c option with mpirun. I am 
not able to figure out the problem. I will send u the .config file 
in

my next mail when i get back to my dept.

Venky