/usr/bin/ibv_xsrq_pingpong: unrecognized option '--help'
Usage:
  /usr/bin/ibv_xsrq_pingpong            start a server and wait for connection
  /usr/bin/ibv_xsrq_pingpong <host>     connect to server at <host>

Options:
  -p, --port=<port>      listen on/connect to port <port> (default 18515)
  -d, --ib-dev=<dev>     use IB device <dev> (default first device found)
  -i, --ib-port=<port>   use port <port> of IB device (default 1)
  -s, --size=<size>      size of message to exchange (default 4096)
  -m, --mtu=<size>       path MTU (default 1024)
  -c, --clients=<n>      number of clients (on server only, default 1)
  -n, --num_tests=<n>    number of tests per client (default 5)
  -l, --sl=<sl>          service level value
  -e, --events           sleep on CQ events (default poll)
  -o, --odp		    use on demand paging
  -g, --gid-idx=<gid index> local port gid index