(Linux) Displays the
Intel® Omni-Path Multicast groups created for the fabric along with the
Intel® Omni-Path Host Fabric Interface (HFI) ports which are a member of each multicast group. This command can be helpful when attempting to analyze or debug
Intel® Omni-Path multicast usage by applications or ULPs such as IPoIB.
Syntax
opashowmc [-v] [-m mgid] [-t portsfile] [-p ports]
Options
- --help
-
Produces full help text.
- -v
-
Returns verbose output and shows name of each member.
- -m
mgid
-
Shows the membership of the group
<mgid> only.
- -t
portsfile
-
Specifies the file with list of local HFI ports used to access fabric(s) for analysis. Default is
/etc/opa/ports file.
- -p
ports
-
Specifies the list of local HFI ports used to access fabric(s) for analysis.
Default is first active port. The first HFI in the
system is 1. The first port on an HFI is 1. Uses the format hfi:port, for
example:
- 0:0
-
First active port in system.
- 0:y
-
Port
y within system.
- x:0
-
First active port on HFI
x.
- x:y
-
HFI
x, port
y.
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:
- PORTS
-
List of ports, used in absence of
-t and
-p.
- PORTS_FILE
-
File containing list of ports, used in absence of
-t and
-p.