[torqueusers] Non-cummulative pbsnodes -o command

Garrick Staples garrick at usc.edu
Wed Feb 13 15:51:04 MST 2008

On Wed, Feb 13, 2008 at 04:41:10PM -0600, John Wang alleged:
> This is probably a fairly basic beef about Torque but it has been bugging
> the hell out of me.
> When using the command ³pbsnode ­o ­N Œmessage¹ node1 node2 ...² to drain
> nodes, we have to list all the nodes that we want to stay drained in that
> single command ie.: even if a node was previously drained for another
> reason, issuing a ³pbsnode ­o² command without specifying the previously
> drained nodes results in those nodes being marked online instead of offline.
> This is truly ridiculous, it¹s like playing a game of bonk the gopher.   It
> is conceivable to have more nodes that you would want drained then can be
> specified on a single line and there should be no reason for us to have to
> independently track what nodes should be offline.
> As near as I can tell, most people avoid this with creative workarounds such
> as shutting down the pbs_mom daemon on the nodes to be offline or by
> creating very specific reservations.   I¹d imagine that there may be more
> such creative workarounds spurring more diversity in operational practices.
> So the question is, how do you work around this ridiculous behaviour at your
> site and is there any valid technical reason for pbsnodes to work in this
> fashion?

I have never seen or heard of these behaviours that you are describing.  In
fact, I rarely ever specify more than one node at time.

What version of torque are you using?

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