IBM RS/6000 SP, Maintenance Information

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MAP 0510: Switch Assembly
MAP 0510: Switch Assembly
The switch features consist of the following components:
Ÿ Switch adaptor cards (one per processor node),
Ÿ
Switch assembly
Ÿ
Switch internal data cables (one per processor node) (HiPS 2.0 only)
Ÿ Switch internal clock cables (may not be required)
Ÿ Switch power cable
Ÿ Switch wrap plugs (male 46G5619 and female 46G5620 for HiPS, male 77G0818 and female
46H9688 for SPS). Refer to Figure 1-31 on page 1-299 and Figure 1-32 on page 1-300 for views of
these wrap plugs.
Ÿ
Switch external data cables (multi-frame only)
Ÿ Switch clock interposers (multi-frame only; may not be required) (HiPS 2.0 only)
Attention:
1. Switch data plug/jack connector pins are easily bent. Check for bent pins on male plugs or bent pin
guides on female jacks if a cable is difficult to plug. Problems with bent pins or pin guides can propa-
gate to new plugs/jacks if not corrected first.
2. All connected switch assemblies must be running from the same master clock. If the switch assem-
blies have not been set properly, all processor nodes in a logical frame will be uninitialized. Refer to
"Selecting Appropriate Switch Clocks" in
IBM RS/6000 SP: Maintenance Information, Volume 3,
Locations and Service Procedures for these procedures.
3. Switch clock cables are fragile. Do not allow cables to bend too sharply or the cable may be perma-
nently damaged.
Refer to Figure 1-29 on page 1-296 and Figure 1-30 on page 1-297 for high-level views of the RS/6000
SP High Performance Switch (HiPS) and Scalable POWERparallel Switch (SPS) assemblies.
Switch Connection Types
Standard Node Processor nodes in 9076 SP frames are attached to the switch assemblies with
switch cables.
Dependent Node Switch adapter resides outside of the 9076 SP frame. Each dependent node is a
single SP Switch Router Adapter in the 9077 Switch Router. There can be several
dependent nodes in each SP Switch Router.
Switch-to-Switch Connections between switch assemblies.
Switch Assembly Types
HiPS 2.0 Has separate squared clock connectors (J35 and J36) at bulkhead. J35 provides
clocks for processor nodes. J36 provides clock connections for switch-to-switch; in
a system with HiPS 3.0 assemblies, clock interposers are used to route data cables
J3, J5, and J7 to J36.
FRUs include: Fans, circuit breaker, LED card, complete assembly.
HiPS 3.0 All clocks are distributed through data cables (no J35 or J36). External clock inputs
are selected from J3, J5, or J7.
FRUs include: Fans, circuit breaker, LED card, switch supervisor card, switch
power card, switch clock card, complete assembly.
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RS/6000 SP MAPs