[StarCluster] loadbalance exit after no jobs

[David Erickson]

Hi-
I was reading about the loadbalance command and it looks great, I'd like 
to submit a bunch of jobs (1:1 with VMs) then draw down the VMs once 
jobs end.  It looks like loadbalance can do this, one quirk however is 
I'd like the loadbalance command to exit once the queue is empty, but 
NOT kill the master, because I'd like to copy some data off before 
terminating the cluster.  Is there any way to do this with the 
loadbalance command?  A workaround would be to run loadbalance to handle 
draw down of the cluster and another command watching for all jobs to 
complete which will kill loadbalance once all jobs complete, but it is 
more complex.

Thanks,
David