Using parallel in a cluster

[yacob sen]

Dear All,

I would like to use the Gnu Parallel inside a HPC machine (cluster) with several nodes and and a handful of core attached to each of the nodes. 

Up until now I have been using my local machine or a server  with a multiple  processor core that I can count using  

cat /proc/cpuinfo  | grep "processor" | wc 

and supply this number depending on the intensiveness of the work not to slowdown a server  and to free up some processor cores for other users

 parallel --eta -jn

n=is the number of processor core that I want to use.

How is this expanded in a cluster with several nodes and cores. Is the same command can be used ? If I and some one else in the cluster ask the same node can this parallel be adversely affected in terms of speed.

I am looking forward to hear from you.

Regards,

Yacob