User Manual

InfiniBand Fabric UtilitiesRev 2.2-1.0.1
Mellanox Technologies
280
Additional Options
The table below lists the additional flags of the command.
-l, --post_list=<list size> Post list of WQEs of <list size> size (instead of single
post)
-m, --mtu=<mtu> MTU size : 256 - 4096 (default port mtu)
-n, --iters=<iters> Number of exchanges (at least 5, default 5000)
-N, --no peak-bw Cancel peak-bw calculation (default with peak)
-O, --dualport Run test in dual-port mode.
-p, --port=<port> Listen on/connect to port <port> (default 18515)
-q, --qp=<num of qp's> Num of qp's(default 1)
-Q, --cq-mod Generate Cqe only after <--cq-mod> completion
-R, --rdma_cm Connect QPs with rdma_cm and run test on those QPs
-s, --size=<size> Size of message to exchange (default 65536)
-S, --sl=<sl> SL (default 0)
-t, --tx-depth=<dep> Size of tx queue (default 128)
-T, --tos=<tos value> Set <tos_value> to RDMA-CM QPs. available only with
-R flag. values 0-256 (default off)
-u, --qp-timeout=<timeout> QP timeout, timeout value is 4 usec * 2 ^(timeout),
default 14
-V, --version Display version number
-w, --limit_bw Set verifier limit for bandwidth
-x, --gid-index=<index> Test uses GID with GID index (Default : IB - no gid .
ETH - 0)
-y, --limit_msgrate Set verifier limit for Msg Rate
-z, --com_rdma_cm Communicate with rdma_cm module to exchange data -
use regular QPs
Table 54 - Additional ib_write_bw Flags and Options
Flag Description
--output=<units> Set verbosity output level: bandwidth , message_rate,
latency_typical
Table 53 - ib_write_bw Flags and Options
Flag Description