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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | SEE ALSO | COLOPHON |
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UCMATOSE(1) librdmacm UCMATOSE(1)
ucmatose - RDMA CM connection and simple ping-pong test.
ucmatose [-s server_address] [-b bind_address]
[-f address_format] [-P port_space]
[-c connections] [-C message_count] [-S message_size] [-a ack_timeout]
ucmatose -s server_address [-b bind_address]
[-f address_format] [-P port_space]
[-c connections] [-C message_count] [-S message_size] [-t tos] [-a ack_timeout]
Establishes a set of reliable RDMA connections between two nodes
using the librdmacm, optionally transfers data between the nodes,
then disconnects.
-s server_address
The network name or IP address of the server system
listening for connections. The used name or address must
route over an RDMA device. This option must be specified
by the client.
-b bind_address
The local network address to bind to. To bind to any
address with IPv6 use -b ::0 .
-f address_format
Specifies the format of the server and bind address. Be
default, the format is determined by getaddrinfo() as
either being a hostname, an IPv4 address, or an IPv6
address. This option may be used to indicate that a
specific address format has been provided. Supported
address_format values are: name, ip, ipv6, and gid.
-P port_space
Specifies the port space for the connection. Be default,
the port space is the RDMA TCP port space. (Note that the
RDMA port space may be separate from that used for IP.)
Supported port_space values are: tcp and ib.
-c connections
The number of connections to establish between the client
and server. (default 1)
-C message_count
The number of messages to transfer over each connection.
(default 10)
-S message_size
The size of each message transferred, in bytes. (default
100)
-t tos Indicates the type of service used for the communication.
Type of service is implementation dependent based on subnet
configuration.
-a ack_timeout
Indicates the QP ACK timeout value that should be used.
The value calculated according to the formula 4.096 *
2^(ack_timeout) usec.
-m Tests event channel migration. Migrates all communication
identifiers to a different event channel for disconnect
events.
Basic usage is to start ucmatose on a server system, then run
ucmatose -s server_name on a client system.
Because this test maps RDMA resources to userspace, users must
ensure that they have available system resources and permissions.
See the libibverbs README file for additional details.
rdma_cm(7), udaddy(1), mckey(1), rping(1)
This page is part of the rdma-core (RDMA Core Userspace Libraries
and Daemons) project. Information about the project can be found
at ⟨https://github.com/linux-rdma/rdma-core⟩. If you have a bug
report for this manual page, send it to
linux-rdma@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨https://github.com/linux-rdma/rdma-core.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-04.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
librdmacm 2007-05-15 UCMATOSE(1)
Pages that refer to this page: mckey(1), rping(1), udaddy(1), rdma_cm(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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