I am guessing you have each one of these clusters in a separate partition.

How big are these clusters?  You can turn off the communication by just set up 
the treewidth to the number of nodes in you system.

Is there any reason you don't want to/can't use the multi cluster 
functionality, and operate in traditional SLURM fashion with 1 slurmctld per 
cluster?

Danny

> -----Original Message-----
> From: [email protected] [mailto:owner-slurm-
> [email protected]] On Behalf Of Josh England
> Sent: Thursday, April 14, 2011 9:50 AM
> To: [email protected]
> Subject: [slurm-dev] two clusters / one scheduler
> 
> I'd like to have a single slurm instance schedule jobs onto two
> physically disjoint clusters.  The compute nodes of one cluster cannot
> reach the compute nodes of the other cluster, but they can all see the
> scheduler nodes.  With slurm's hierarchical communication, when some
> nodes can't reach others slurm thinks the nodes are not responding and
> would eventually mark them offline.  Is there any way to logically group
> nodes into separate communication groups to avoid this problem?
> 
> -JE
> 


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