I have two servers each of which installed the latest Mellanox firmware and the Mellanox OFED 4.1 software stack. I tried the ib_send_bw on two machines, but get the error as it shows in following pictures. I have reinstalled the whole software stack for few times, but the problem still exist. Can someone please help me with this problem? Many thanks.
i got some useful information from the older posters "https://community.mellanox.com/docs/DOC-2086#comment-2056 "
The problem was because of multiple network cards installed on one server, when i manually specified the network card, the problem is gone.