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mckey - Online in the Cloud

Run mckey in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command mckey that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


mckey - RDMA CM multicast setup and simple data transfer test.

SYNOPSIS


mckey -m multicast_address [-s] [-b bind_address] [-c connections]
[-C message_count] [-S message_size] [-p port_space]
mckey -m multicast_address -s [-b bind_address] [-c connections]
[-C message_count] [-S message_size] [-p port_space]
mckey -M unmapped_multicast_address -b bind_address [-s] [-c connections]
[-C message_count] [-S message_size] [-p port_space]

DESCRIPTION


Establishes a set of RDMA multicast communication paths between nodes using the librdmacm,
optionally transfers datagrams to receiving nodes, then tears down the communication.

OPTIONS


-m multicast_address
IP multicast address to join.

-M unmapped_multicast_address
RDMA transport specific multicast address to join.

-s Send datagrams to the multicast group.

-b bind_address
The local network address to bind to.

-c connections
The number of QPs to join the multicast group. (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. This value must be smaller than
the MTU of the underlying RDMA transport, or an error will occur. (default 100)

-p port_space
The port space of the datagram communication. May be either the RDMA UDP (0x0111)
or IPoIB (0x0002) port space. (default RDMA_PS_UDP)

NOTES


Basic usage is to start mckey -m multicast_address on a server system, then run mckey -m
multicast_address -s on a client system.

Unique Infiniband SA assigned multicast GIDs can be retrived by invoking mckey with a zero
MGID or IP address. (Example, -M 0 or -m 0.0.0.0). The assigned address will be
displayed to allow mckey clients to join the created group.

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.

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