[Beowulf] Restricting users from ssh into nodes

[Mark Hahn]

> provide accurate process accounting. When you just use SSH, can you
> provide that level of control?

yes, of course you can.  I didn't mean to imply that everything would 
be user-level (ie, not ever resort to root.)

> similar), that they can use while their job is running, and then have an
> epilog script that will automatically clean it up after the job completes.

none of this requires a persistent scheduler daemon on compute nodes.
actually, it wouldn't even require an on-node wrapper process for the 
life of the job.

regards, mark hahn.