Hello,
Here is my story: i'm student and i need for my master thesis to do some benchmark about the bandwidth and the latency. For that i have 2 ConnectX-3 VPI Card (MCX353A-QCBT: 40/10 [Gbsps] for Infinband / Ethernet) in 2 Computer. Ubuntu 12.4 is installed on these computer and i used Mellanox OFED.
with Infiniband as Link Type i got a bandwidth average with a value between 3630 MB and 3700 MB (28.35Gbit and 28.9 Gbit) for 8 Gb up to 80 Gb Size. my net bandwidth is 38.8 Gbit/s but with the send/ receive semantiks, this net bandwidth value is not reached.
my question is can anyone please explain me where the remaining 10 Gbits gone for? or does anyone have a doc about this?
thx