Hi,

I am running an OpenMPI program on a linux cluster with 4 quad cores per node.

I use qstat -n jobID to check how many processes working in parallel and find that :

node160/15+node160/14+node160/13+node160/12+node160/11+node160/10+node160/9
   +node160/8+node160/7+node160/6+node160/5+node160/4+node160/3+node160/2
   +node160/1+node160/0+node166/15+node166/14+node166/13+node166/12+node166/11
   +node166/10+node166/9+node166/8+node166/7+node166/6+node166/5+node166/4
   +node166/3+node166/2+node166/1+node166/0+node173/15+node173/14+node173/13
   +node173/12+node173/11+node173/10+node173/9+node173/8+node173/7+node173/6
   +node173/5+node173/4+node173/3+node173/2+node173/1+node173/0+node175/15
   +node175/14+node175/13+node175/12+node175/11+node175/10+node175/9+node175/8
   +node175/7+node175/6+node175/5+node175/4+node175/3+node175/2+node175/1
   +node175/0

But, when I use ssh to be on a node , e..g ssh node175,

I use top command to check how many processes working on node 175 and find that
there are only one process working, not 8 processes.

Would you please tell me how to check the processes number on one node ?

Any  help will be appreciated. 

Thanks

Jinxu Ding