SGI Octane III User's Guide download pdf (Page 44)

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4: Octane III Workstation BIOS Information

This feature defines how many meters above or below sea level the system is located. The options

are Sea Level or Below, 1~300, 301~600, 601~900, 901~1200, 1201~1500, 1501~1800,

1801~2100, 2101~2400, 2401~2700, 2701~3000.

DIMM Pitch

This is the physical space between each DIMM module. Each step is in 1/1000 of an inch. The

default is [400]. Press "+" or "-" on your keyboard to change this value.

North Bridge Configuration

This feature allows the user to configure the settings for the Intel North Bridge chip.

Crystal Beach/DMA

This feature works with the Intel I/O AT (Acceleration Technology) to accelerate the performance

of TOE devices. (Note: A TOE device is a specialized, dedicated processor that is installed on an

add-on card or a network card to handle some or all packet processing of this add-on card.) When

this feature is set to Enabled, it will enhance overall system performance by providing direct

memory access for data transferring. The options are Enabled and Disabled. Check with your SGI

sales or service representative for information on the availability of this option.

Intel VT-d

Select Enabled to enable Intel's Virtualization Technology support for Direct I/O VT-d by

reporting the I/O device assignments to VMM through the DMAR ACPI Tables. This feature

offers fully-protected I/O resource-sharing across the Intel platforms, providing the user with

greater reliability, security and availability in networking and data-sharing. The settings are

Enabled and Disabled.

IOH PCIE Port1 Bifurcation

This feature allows the user to set IOH Bifurcation configuration for the PCI-E Port

The options are X4X4X4X4, X4X4X8, X8X4X4, X8X8.

IOH PCIE Max Payload Size

Some add-on cards perform faster with the coalesce feature, which limits the payload size to 128

MB; while others, with a payload size of 256 MB which inhibits the coalesce feature. Please refer

to your add-on card user guide for the desired setting. The options are 256 MB and 128MB.

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SGI Octane III User's Guide Page 44