fi_pingpong - Quick and simple pingpong test for libfabric
fi_pingpong [OPTIONS] start server
fi_pingpong [OPTIONS] <server address> connect to server
fi_pingpong is a pingpong test for the core feature of the libfabric library:
transmitting data between two processes. fi_pingpong also displays aggregated
statistics after each test run, and can additionally verify data integrity
By default, the datagram (FI_EP_DGRAM) endpoint is used for the test, unless
otherwise specified via -e.
Two copies of the program must be launched: first, one copy must be launched as
the server. Second, another copy is launched with the address of the server.
As a client-server test, each have the following usage model:
client$ fi_pingpong <server address>
The server and client must be able to communicate properly for the fi_pingpong
utility to function. If any of the -e, -I, -S, or -p options are used, then
they must be specified on the invocation for both the server and the client
process. If the -d option is specified on the server, then the client will
select the appropriate domain if no hint is provided on the client side. If
the -d option is specified on the client, then it must also be specified on
the server. If both the server and client specify the -d option and the given
domains cannot communicate, then the application will fail.
: The non-default source port number of the control
socket. If this is not provided then the server will bind to port 47592 by
default and the client will allow the port to be selected automatically.
: The non-default destination port number of the
control socket. If this is not provided then the client will connect to 47592
by default. The server ignores this option.
: The name of the underlying fabric provider
(e.g., sockets, psm, usnic, etc.). If a provider is not specified via the -p
switch, the test will pick one from the list of available providers (as
returned by fi_getinfo(3)).
: The type of endpoint to be used for data messaging
between the two processes. Supported values are dgram, rdm, and msg. For more
information on endpoint types, see fi_endpoint(3).
: The name of the specific domain to be used.
: The number of iterations of the test will run.
: The specific size of the message in bytes the test
will use or 'all' to run all the default sizes.
: Activate data integrity checks at the receiver (note: this will
: Activate output debugging (warning: highly verbose)
: Displays help output for the pingpong test.
server$ fi_pingpong -p sockets
client$ fi_pingpong -p sockets 192.168.0.123
server$ fi_pingpong -p usnic -I 1000 -S 1024
client$ fi_pingpong -p usnic -I 1000 -S 1024 192.168.0.123
Specifically, this will run a pingpong test with:
- usNIC provider
- 1000 iterations
- 1024 bytes message size
- server node as 192.168.0.123
server$ fi_pingpong -p usnic -I 10000 -S all
client$ fi_pingpong -p usnic -I 10000 -S all 192.168.0.123
There is no default provider; if a provider is not specified via the -p switch,
the test will pick one from the list of available providers (as returned by
If no endpoint type is specified, 'dgram' is used.
The default tested sizes are: 64, 256, 1024, 4096, 65536, and 1048576. The test
will only test sizes that are within the selected endpoints maximum message
Each test generates data messages which are accounted for. Specifically, the
displayed statistics at the end are :
- bytes : number of bytes per message sent
- #sent : number of messages (ping) sent from the
client to the server
- #ack : number of replies (pong) of the server
received by the client
- total : amount of memory exchanged between the
- time : duration of this single test
- MB/sec : throughput computed from total and
- usec/xfer : average time for transferring a message
outbound (ping or pong) in microseconds
- Mxfers/sec : average amount of transfers of message
outbound per second
fi_getinfo(3), fi_endpoint(3) fabric(7),