What version are you using? If you are using 1.5.x, there is an "orte-top" command that will do what you ask. It queries the daemons to get the info.

On Apr 12, 2011, at 9:55 PM, Jack Bryan wrote:

Hi , All: 

I need to monitor the memory usage of each parallel process on a linux Open MPI cluster. 

But, top, ps command cannot help here because they only show the head node information. 

I need to follow the behavior of each process on each cluster node.

I cannot use ssh to access each node. 

The program takes 8 hours to finish. 

Any help is really appreciated. 

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