Name
opashowmc — Displays the Omni-Path Multicast groups created for the fabric along with the SuperNIC ports which are a member of each multicast group.
Syntax
opashowmc [-v] [-m mgid] [-t portsfile] [-p ports]
Description
This command can be helpful when attempting to analyze or debug Omni-Path multicast usage by applications or upper layer protocols such as IPoIB.
Options
--helpProduces full help text.
-vReturns verbose output and shows the name of each member.
-mmgidShows the membership of the group
<mgid>only.-tportsfileSpecifies the file with the list of local SuperNIC ports used to access fabric(s) for analysis. Default is
/etc/opa/portsfile.-pportsSpecifies the list of local SuperNIC ports used to access fabric(s) for analysis. Default is the first active port. Specified as
HFI:portas follows:Note
The first port on a SuperNIC is 1.
0:0First active port in the system.
0:yPort
yx:0First active port on SuperNIC
xx:ySuperNIC
xy
Examples
opashowmc opashowmc -p '1:1 1:2 2:1 2:2' opashowmc -m 0xff12401b80010000:0x00000000ffffffff
Environment Variables
The following environment variables are also used by this command:
PORTSList of ports, used in absence of
-tand-p.PORTS_FILEFile containing the list of ports, used in absence of
-tand-p.