a) prefer smaller networks to larger ones (i.e. use a 2-node "net" for a
2-node job rather than allocating two nodes out of a 24-node net);
b) when starting two 1-node jobs, pack them into the same 2-node net
rather than occupy one node each out of two different node sets.
For both a) and b) you want to read here (I cannot tell you the exact
solution for your problem):
http://www.clusterresources.com/products/maui/docs/5.2nodeallocation.shtml#node
You can write your own priority function for node allocations. For you
also section "5.2.2.9 LOCAL" might be very interesting.
For example, I have the following
NODEALLOCATIONPOLICY PRIORITY
NODECFG[DEFAULT] PRIORITYF='-JOBCOUNT'
which does the exact reverse of what you want (spread the jobs as evenly
as possible).
Cheers,
Ronny
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