Quadrics QsNetII Interconnect

4
16/32-Port Interconnect
Smaller clusters are optionally built using the Quadrics model QS32A 16/32-port
interconnect. The following information is provided for this component:
• An overview of the interconnect is provided in Section 4.1
• Instructions for cabling the 16/32-port interconnect are provided in Section 4.2
• An explanation of the 16/32-port interconnect signal LEDs is provided in
Section 4.3
4.1 Overview of the 16/32-Port Interconnect
The Quadrics
®
QsNet
II
™ model QS32A 16-port or 32-port interconnect is an
option for smaller clusters of 8 to 32 nodes. The QS32A, shown in Figure 4-1,
is a rack-mountable, high-speed switch unit with integrated power supply and
controller. It provides 16 or 32 link ports for connecting up to 32 separate cluster
nodes, each fitted with a QM500 host bus adapter (HBA).
Figure 4-1: 16/32-Port Interconnect, Port View
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The information in this section refers to the 32–port model and describes any
features or procedures that differ for the 16–port model.Figure 4-1 shows the port
switch module, containing 32 high-speed link ports, each with three status LEDs.
The top row of ports from left to right are labeled 0 through 15. The bottom row of
ports from right to left are labeled 16 to 31. The orientation of the lower row of link
ports is a mirror image the upper row. On the 32-port model, you must rotate the
link cable connectors when you connect them to the lower ports.
The following list of physical features are identified by the callouts in Figure 4-1:
1. The fuse-protected AC power inlet.
2. Power breaker switch.
16/32-Port Interconnect 4-1