-send (B/MB) receive (B/MB) time (s)
-------------------------------------------------------------
-1048576/1 210944/0.2 1
-33554432/32 8388608/8 17
-67108864/64 18874368/18 37
-134217728/128 40894464/39 90
-268435456/256 57671680/55 133
+send (B/MB) receive (B/MB) t(s) 2p 3p 6p 8p
+-------------------------------------------------------------------------------
+33554432/32 8388608/8 13 29 35 20 21
+67108864/64 18874368/18 34 53 67 35 41
+134217728/128 40894464/39 66 118 142 72 91
+268435456/256 57671680/55 121 223 277 115 159