ibping error: “can't serve class 50 on this port”

Question

I try to run an ibping server on a machine with an infiniband card:

ibping -S

I get this error message:

ibping: iberror: failed: can't serve class 50 on this port

Any idea to solve the problem? For information, the infiniband cable is apparently broken (ibstat shows that all ports are in physical state polling), but I do not think it should make the previous command fail.

Answer 1

I finally restarted the computer, now ibping -S seems to work. Still no idea on why it was broken.