User Manual

InfiniBand Fabric UtilitiesRev 2.3-1.0.1
Mellanox Technologies
200
ib_read_lat Calculates the latency of RDMA read operation of message_size between a
pair of machines. One acts as a server and the other as a client. They per
-
form a ping pong benchmark on which one side RDMA reads the memory
of the other side only after the other side have read his memory. Each of the
sides samples the CPU clock each time they read the other side memory , in
order to calculate latency. Read is available only in RC connection mode (as
specified in IB spec).
For further information, please refer to the tool’s man page.
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 throughput 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.
For further information, please refer to the tool’s man page.
ib_send_lat Calculates the latency of sending a packet in message_size between a pair
of machines. One acts as a server and the other as a client. They perform a
ping pong benchmark on which you send packet only if you receive one.
Each of the sides samples the CPU each time they receive a packet in order
to calculate the latency. Using the "-a" provides results for all message
sizes.
For further information, please refer to the tool’s man page.
ib_write_bw Calculates the BW of RDMA write between a pair of machines. One acts as
a server and the other as a client. The client RDMA writes to the server
memory and calculate the BW by sampling the CPU each time it receive a
successful completion. The test supports features such as Bidirectional, in
which they both RDMA write to each other at the same time, change of mtu
size, tx size, number of iteration, message size and more. Using the "-a" flag
provides results for all message sizes.
For further information, please refer to the tool’s man page.
ib_write_lat Calculates the latency of RDMA write operation of message_size between a
pair of machines. One acts as a server and the other as a client. They per
-
form a ping pong benchmark on which one side RDMA writes to the other
side memory only after the other side wrote on his memory. Each of the
sides samples the CPU clock each time they write to the other side memory,
in order to calculate latency.
For further information, please refer to the tool’s man page.
raw_ethernet_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 throughput 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.
For further information, please refer to the tool’s man page.
Table 8 - Diagnostic Utilities (Sheet 2 of 3)
Utility Description