opagetvf (1) - Linux Manuals



Used for scripting application use of vFabrics, such as for mpirun parameters. You can query by VF Name, VF Index, Service ID, MGID, PKey, or SL. Fetches the Virtual Fabric info in a delimited format. Returns exactly one matching VF. When multiple VFs match the query, it prefers non-default VFs in which the calling server is a full member. If multiple choices remain, it returns the one with the lowest VF Index. Uses the same algorithm as the Distributed SA Plug-in (DSAP).

The tool can be used with additional scripts to help set PKey, SL, MTU, and Rate when running MPI jobs. Internally, this tool is based on the opasaquery -o vfinfocsv command. For more information, see opasaquery


opagetvf [-h hfi] [-p port] [-e] [-d vfname|-S serviceId|-m mcgid|-i vfIndex| -k pkey|-L sl]


Produces full help text.
-h hfi
HFI to send by. Default is first HFI.
-p port
Port to send by, default is first active port.
Output MTU and rate as enum values.
-d vfname
Queries by VirtualFabric Name.
-S serviceId
Queries by Application ServiceId.
-m gid
Queries by Application Multicast GID.
-i vfindex
Queries by VirtualFabric Index.
-k pkey
Queries by VirtualFabric PKey.
Queries by VirtualFabric SL.


opagetvf -d 'Compute'
opagetvf -h 2 -p 2 -d 'Compute'

Sample Outputs

The output is of the form: name:index:pkey:sl:mtu:rate:optionflag as shown in the following example.

Option flag (bitmask) values include:

0x00 Indicates no bits are set. Specifically, no QOS, no Security, and no flow control disabled (which means flow control is enabled).
0x01 Security
0x02 QOS
0x04 Flow Control Disable

# opagetvf -d Default