IBM RS/6000 SP, Maintenance Information

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MAP 0350: POWER3 SMP Thin and Wide Node Control
MAP 0350: POWER3 SMP Thin and Wide Node Control
Attention: If a POWER3 SMP thin or wide node is present in this frame, it is possible that the 48-volt
power distribution is spread across more than one power harness. Check physical connections from circuit
breaker(s) to 48-volt bulkhead connectors for actual power distribution.
Attention: The processor node(s) must be removed from active configuration before continuing. If
processor node(s) is/are off, continue; otherwise, ask customers to initiate shutdown procedure and
power-off processor node(s) from the control workstation, or defer maintenance until all jobs are com-
pleted. Powering off a processor node(s) in a parallel environment will cause all jobs to flush from the
queue and switch initialization to rerun.
Attention: Servicing a processor node with the High Performance Switch (HiPS) feature or Scalable
POWERparallel Switch (SPS) feature installed, will impact the entire switch network, unless the processor
node has already been powered off (or fenced) and/or the switch data cable has been disconnected.
Refer to "Service Position Procedures" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations
and Service Procedures for placing or removing processor node(s) in/from service position.
Refer to "Viewing Switch Partitions" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations
and Service Procedures for locating and fencing/unfencing nodes within a switch partition.
001
Processor node problem detected by customer or CE.
– Use the following table to continue service:
Condition Action
Ÿ Problem with node power Go to “MAP 0330: POWER3 SMP Thin and Wide
Node Environment” on page 1-191.
Ÿ Node will not reset Go to Step 002.
Ÿ
No response from TTY console
Ÿ
Close existing TTY window and open another.
Ÿ Go to Step 019 on page 1-211.
Ÿ Yellow or green LEDs on node will not light. Go to Step 039 on page 1-215.
002
Node will not reset.
– Check with customer to make sure this processor node is not in the current active configuration. If
processor node is
not operational and actively working at this time, continue service. If it is operational
and actively working, schedule a time convenient for the customer.
– From the control workstation, open the node front panel display.
– Issue reset for this processor node.
Does processor node reset?
Yes No
003
Problem with reset.
– Go to Step 007 on page 1-209.
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RS/6000 SP MAPs