No sure I can fully answer that question, but you could add --display-map to the mpirun command and it will tell you how many we *think* we started on each node.

On Jun 23, 2012, at 1:33 PM, Jack Bryan wrote:


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 : 


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.  


Jinxu Ding

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