User Manual

InfiniBand Fabric UtilitiesRev 2.2-1.0.1
Mellanox Technologies
274
Additional Options
The table below lists the additional flags of the command
Table 47 - Additional ib_read_lat Flags and Options
Flag Description
--inline_recv=<size> Max size of message to be sent in inline receive
--output=<units> Set verbosity output level: bandwidth , message_rate,
latency_typical
--pkey_index=<pkey index> PKey index to use for QP
.
9.5.3 ib_send_bw
ib_send_bw calculates the BW of SEND between a pair of machines. One acts as a server and the
other as a client. The server receive packets from the client and they both calculate the through-
put of the operation. The test supports features such as Bidirectional, on which they both send
and receive at the same time, change of mtu size, tx size, number of iteration, message size and
more. Using the "-a" provides results for all message sizes.
-m, --mtu=<mtu> MTU size : 256 - 4096 (default port mtu)
-n, --iters=<iters> Number of exchanges (at least 5, default 1000)
-o, --outs=<num> Num of outstanding read/atom (default max of device)
-p, --port=<port> Listen on/connect to port <port> (default 18515)
-R, --rdma_cm Connect QPs with rdma_cm and run test on those QPs
-s, --size=<size> Size of message to exchange (default 2)
-S, --sl=<sl> SL (default 0)
-T, --tos=<tos value> Set <tos_value> to RDMA-CM QPs. availible only with
-R flag. values 0-256 (default of
f)
-u, --qp-timeout=<timeout> QP timeout, timeout value is 4 usec * 2 ^(timeout),
default 14
-U, --report-unsorted (implies -H) print out unsorted results (default sorted)
-V, --version Display version number
-x, --gid-index=<index> Test uses GID with GID index (Default : IB - no gid .
ETH - 0)
-z, --com_rdma_cm Communicate with rdma_cm module to exchange data -
use regular QPs
Table 46 - ib_read_lat Flags and Options
Flag Description