User`s guide

Functional Architecture
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A Silicon Graphics Prism system contains a combination of the following modules:
• Base compute module. All Silicon Graphics Prism systems include at least one base
compute module that contains the following components:
– A node board with two Intel Itanium 2 processors (each processor has
integrated L1, L2, and L3 caches), between 2 GB and 24 GB of local memory,
and a SHUB ASIC (the crossbar between the processors, local memory, the
network interface, and the I/O interface).
– Four PCI/PCI-X slots
– One four-port USB card that comes factory-installed in the top PCI/PCI-X slot
– One IO10 PCI card that comes factory-installed in the lowermost PCI/PCI-X
slot
Note: See “Optional IO9 PCI Card” on page 53 for information about the
optional IO9 card.
Note: Each system or partition requires a minimum of base I/O card. The
standard card providing this base I/O functionality is an IO10 PCI card.
Additional IO10 cards are required if you want additional serial ATA hard drives
and/or DVD-ROM drives in additional modules. These cards must reside in
additional base compute modules (no more than one card per module).
The IO10 card has real-time interrupt input and output ports, an Ethernet port,
and a multi-port serial adapter connector. The IO10 card is also needed to
support a base module’s serial ATA disk drive(s), and DVD-ROM.
Note: The RT interrupt input and RT interrupt output functionality of the IO10
PCI card is not supported under SGI Linux + ProPack.
– A bootable hard drive
– A DVD-ROM drive