fi_info - Simple utility to query for fabric interfaces
The fi_info utility can be used to query for available fabric
interfaces. The utility supports filtering based on a number of options such
as endpoint type, provider name, or supported modes. Additionally, fi_info
can also be used to discover the environment variables that can be used to
tune provider specific parameters. If no filters are specified, then all
available fabric interfaces for all providers and endpoint types will be
returned.
- -n,
--node=<NAME>
- Node name or address used to filter interfaces. Only interfaces which can
reach the given node or address will respond.
- -P,
--port=<PORT>
- Port number used to filter interfaces.
- -c,
--caps=<CAP1|CAP2>..
- Pipe separated list of capabilities used to filter interfaces. Only
interfaces supporting all of the given capabilities will respond. For more
information on capabilities, see fi_getinfo(3).
- -m,
--mode=<MOD1|MOD2>..
- Pipe separated list of modes used to filter interfaces. Only interfaces
supporting all of the given modes will respond. For more information on,
modes see fi_getinfo(3).
- -t,
--ep_type=<EPTYPE>
- Specifies the type of fabric interface communication desired. For example,
specifying FI_EP_DGRAM would return only interfaces which support
unreliable datagram. For more information on endpoint types, see
fi_endpoint(3).
- -a,
--addr_format=<FMT>
- Filter fabric interfaces by their address format. For example, specifying
FI_SOCKADDR_IN would return only interfaces which use sockaddr_in
structures for addressing. For more information on address formats, see
fi_getinfo(3).
- -p,
--provider=<PROV>
- Filter fabric interfaces by the provider implementation. For a list of
providers, see the --list option.
- -d,
--domain=<DOMAIN>
- Filter interfaces to only those with the given domain name.
- -f,
--fabric=<FABRIC>
- Filter interfaces to only those with the given fabric name.
- -e, --env
- List libfabric related environment variables which can be used to enable
extra configuration or tuning.
- *-g [filter]
- Same as -e option, with output limited to environment variables containing
filter as a substring.
- -l, --list
- List available libfabric providers.
- -v,
--verbose
- By default, fi_info will display a summary of each of the interfaces
discovered. If the verbose option is enabled, then all of the contents of
the fi_info structure are displayed. For more information on the data
contained in the fi_info structure, see fi_getinfo(3).
- --version
- Display versioning information.
-
$ fi_info -n 30.0.11.1 -p usnic -t FI_EP_DGRAM
This will respond with all fabric interfaces that can reach
address 30.0.11.1 using endpoint type FI_EP_DGRAM with the usNIC
provider.
By default fi_info will output a summary of the fabric interfaces
discovered:
-
$ ./fi_info -n 30.0.11.1 -p usnic -t FI_EP_DGRAM
provider: usnic
fabric: 30.0.11.0/24
domain: usnic_2
version: 1.0
type: FI_EP_DGRAM
protocol: FI_PROTO_UDP
To see the full fi_info structure, specify the -v
option.