>>> You can do better than 280 us.

>>> So if you use 
>>> 
>>> mpiexec -n 1024 Ray -test-network-only \
>>> -route-messages -connection-type debruijn \
>>> -routing-graph-degree 4
>>> 
>>> 
>>> Then you get 4^5 = 1024, each rank has 4 connections instead of 2
>>> and
>>> routes are at most 5 hops.
>> 
> Let me know if it enhances things.

Results for 1024 cores using debruijn and degree 4.

# AverageForAllRanks: 142.956
# StandardDeviation: 26.1105

Results for 768 (d=9, k=2) cores using kautz 

# AverageForAllRanks: 354.184
# StandardDeviation: 121.536

Ben

------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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