[torqueusers] pbs_server and nodes file how to handle comments

Garrick Staples garrick at usc.edu
Tue Mar 28 10:58:09 MST 2006

On Tue, Mar 28, 2006 at 01:46:44PM +0100, David Golden alleged:
> > That would be a frequency of 0.  New nodes start in state unknown, get
> > pinged, and get an addr list.  The old nodes never get the new addr list.
> Ah.
> Not that it's necessarily what you'd want to do (especially given your
> large-cluster avoiding-ping concerns and maybe iffy effect on running 
> jobs, though jobs on nodes I tested on weren't interrupted): 
> but if you "pbsnodes -r" on the old nodes to force them state=down, 
> do they then get the updated node list and do something useful with
> it when they're noticed to be "back" online by the server? 

Yes, setting a node to down will trigger a ping operation and it will
get a new addr list.

This is why a cluster-wide ping operation is needed to support creating
new nodes automatically.

Garrick Staples, Linux/HPCC Administrator
University of Southern California
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