User guide

3–InfiniBand
®
Cluster Setup and Administration
QLogic Distributed Subnet Administration
3-16 IB0054606-02 A
Figure 3-6. Virtual Fabrics with PSM_MPI Virtual Fabric Enabled
In Figure 3-6, the administrator enabled the “PSM_MPI” fabric, and then added a
new “Reserved” fabric that uses one of the SID ranges that “PSM_MPI” uses.
When a path query has been received, the Distributed SA deals with these
conflicts as follows:
First, any virtual fabric with a pkey of 0xffff or 0x7fff is considered to be an Admin
or Default virtual fabric. This Admin or Default virtual fabric is treated as a special
case by the Distributed SA and is used only as a last resort. Stored SIDs are only
mapped to the default virtual fabric if they do not match any other Virtual Fabrics.
Thus, in the first example, Figure 3-6, the Distributed SA will assign all the SIDs in
its configuration file to the “PSM_MPI” Virtual Fabric as shown in Figure 3-7.
Figure 3-7. Virtual Fabrics with all SIDs assigned to PSM_MPI Virtual Fabric
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