332 Mhz Smp Wide Nodes (F/C 2051); Bus Description; Adapter Placement Restrictions - IBM RS/6000 SP Handbook

2.9 332 MHz SMP Wide Nodes (F/C 2051)

This section describes the 332 MHz POWER3 SMP High Nodes also called
Silver Wide Node. The 332 MHz SMP wide nodes (F/C 2051) have PCI bus
architecture and use either two or four 332 MHz PowerPC processors per node.
These nodes are functionally equivalent to an IBM RS/6000 7025-F50
workstation. The SP system must be operating at PSSP 2.4 (or later) to use
these nodes.
The 332 MHz SMP wide node occupies one full drawer; therefore, eight SMP
wide nodes can be housed in a tall frame. SMP wide nodes can be placed in the
first node slot of a frame without requiring additional nodes.
For electromagnetic compliance, these nodes are housed in an SMP enclosure.
This enclosure (F/C 9930) is automatically included when you order a 332 MHz
SMP wide node.
If you are going to mount a 332 MHz SMP wide node into an older 2.01 m or 1.25
m frame, a power system upgrade is necessary. However, once you have done
the power system upgrade, these nodes are fully compatible with all existing SP
hardware except for High Performance Switches.

2.9.1 Bus description

The 332 MHz SMP wide node PCI bus is divided into three logical groups of PCI
slots. The first slot group (slots I2 and I3) is composed of the two 32-bit slots
residing on the CPU side of the 332 MHz SMP wide node, and the second and
third group reside on the I/O side of the node. Both the second and third group
have four PCI slots each. The second group (slots I1 through I4) has three 64-bit
slots and a single 32-bit slot. The third group (slots I5 through I8) is made up of
the last four 32-bit slots on the I/O side of the node. The third group is a physical
extension on the second group. The I1 slot on the CPU side of the node is
reserved for the optional SP Switch MX2 Adapter. Previously installed 332 MHz
SMP wide nodes may have a withdrawn SP Switch MX Adapter in the CPU side
I1 slot.

2.9.2 Adapter placement restrictions

With few exceptions, the ten PCI slots in the 332 MHz SMP Wide Node can be
used for any valid RS/6000 SP PCI system adapter. While most PCI adapters
will function in any 332 MHz SMP Wide Node slot, the following adapters cannot
be placed in any one of the third group of PCI slots:
S/390 ESCON (F/C 2751)
Chapter 2. SP internal processor nodes
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