[torqueusers] Non-cummulative pbsnodes -o command

Brock Palen brockp at umich.edu
Wed Feb 13 16:04:45 MST 2008

I never had to do this.  I just always use a single node name.  No  
already offline nodes come back online.

pbsnodes -o nyx100
pbsnodes-o nyx101

both will be ofline

Brock Palen
Center for Advanced Computing
brockp at umich.edu

On Feb 13, 2008, at 5:41 PM, John Wang wrote:

> This is probably a fairly basic beef about Torque but it has been  
> bugging the hell out of me.
> When using the command “pbsnode –o –N ‘message’ node1 node2 ...” 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 “pbsnode –o” command without  
> specifying the previously drained nodes results in those nodes  
> being marked online instead of offline.
> This is truly ridiculous, it’s 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.   I’d  
> 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?
> Regards,
> John
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