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3 – InfiniBand
®
Cluster Setup and Administration
QLogic Distributed Subnet Administration
3-18 IB0054606-02 A
SID
The SID is the primary configuration setting for the Distributed SA, and it can be
specified multiple times. The SIDs identify applications which will use the
distributed SA to determine their path records. The default configuration for the
Distributed SA includes all the SIDs defined in the default Qlogic Fabric Manager
configuration for use by MPI.
Each SID= entry defines one Service ID that will be used to identify an application.
In addition, multiple SID= entries can be specified. For example, a virtual fabric
has three sets of SIDs associated with it: 0x0a1 through 0x0a3, 0x1a1 through
0x1a3 and 0x2a1 through 0x2a3. You would define this as:
SID=0x0a1
SID=0x0a2
SID=0x0a3
SID=0x1a1
SID=0x1a2
SID=0x1a3
SID=0x2a1
SID=0x2a2
SID=0x2a3
ScanFrequency
Periodically, the Distributed SA will completely re synchronize its database. This
also occurs if the Fabric Manager is restarted. ScanFrequency defines the
minimum number of seconds between complete re synchronizations. It defaults to
600 seconds, or 10 minutes. On very large fabrics, increasing this value can help
reduce the total amount of SM traffic. For example, to set the interval to 15
minutes, add this line to the bottom of the qlogic_sa.conf file:
ScanFrequency=900
LogFile
Normally, the Distributed SA logs special events through syslog to
/var/log/messages
. This parameter allows you to specify a different
destination for the log messages. For example, to direct Distributed SA messages
to their own log, add this line to the bottom of the qlogic_sa.conf file:
LogFile=/var/log/SAReplica.log
NOTE
A SID of zero is not supported at this time. Instead, the OPP libraries treat
zero values as "unspecified".