I just used an interactive job on c1-3 to ssh to c1-1, and on from there to 
c2-5.  Do you expect this possibility to be blocked once your files are 
distributed?

Once this hole is plugged, the other obvious concern is that someone could 
stow a cron job on a compute node during PBS session (this wouldn't even 
need an interactive session).  However, I think it's reasonable for someone 
to use cron on the head node to fire off occasional qsub's; it's fair use, 
as they're still having to wait in the queue.

Steve

At 05:04 PM 3/8/2006, you wrote:
>I just checked that it seemed to work.
>
>You can submit an interactive job and get a login shell to that
>compute node.
>You still can't ssh into that node.
>
>Unless that some files failed to get distributed to certain compute
>nodes, it should work throughout.
>
>Thanks,
>--------------
>Robin
>[log in to unmask]
>513-529-1483
>
>"Academia politics is the most vicious precisely because the stake is
>so small" - Kissinger
>
>
>
>On Mar 8, 2006, at 4:12 PM, jaime combariza wrote:
>
>>I tried to ssh from the head node to c1-1 c1-2 c1-3 and I was not
>>able to do it. So if ssh is disabled it is working.
>>However, if I request an interactive pbs session then I can ssh to
>>the compute nodes. So the question
>>is why bother?
>>
>>I still have to check if running jobs will be affected.
>>
>>
>>
>>Jaime E. Combariza, Ph.D.
>>Assistant Director Research Computing
>>http://www.muohio.edu/researchcomputing
>>Miami University
>>(513) 529-5080