5000 sleep
send (B/MB)			receive (B/MB)			time (s)
------------------------------------------------------------
1048576/1			1048576/1				1
33554432/32			25030616/24				24
67108864/64			49692348/48				44
134217728/128		89076884/85				89
268435456/256		125071216/120			164


send (B/MB)			receive (B/KB)			time (s)
------------------------------------------------------------
1048576/1			139332/137				1
33554432/32			344232/337				6
67108864/64			368820/361				8
134217728/128		434388/425				19
268435456/256		1901472/1946			53