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5: BIOS Settings
Snoop Filter
Select Enabled to eliminate snoop traffic to the graphics port to improve system performance
when running graphics intensive applications. The options are Enabled and Disabled.
Crystal Beach Features
This feature was designed to implement Intel’s I/O AT (Acceleration Technology) to accelerate
the performance of TCP offload engine (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 the add-on card. For this motherboard,
the TOE device is built inside the ESB2 southbridge chip. The options are Enabled and Disabled.
Route Port 80h Cycles to
This feature allows the user to decide on which bus to send debug information. The options are
Disabled, PCI, and LPC.
Clock Spectrum Feature
If Enabled, the BIOS will monitor the level of Electromagnetic Interference caused by the
components and will attempt to decrease the interference whenever needed. The options are
Enabled and Disabled.
High Precision Event Timer
This is a replacement timer for the 8254 Programmable Interval Timer and the Real-time clock’s
(RTC) periodic interrupt function. The high-precision event timer (HPET) can produce periodic
interrupts at much higher resolutions than the RTC interrupt function. The HPET is used to
synchronize multimedia streams and provide smooth playback which reduces the need to use other
timestamp calculations such as the Intel x86 RDTSC instruction.
USB Function
Select Enabled to enable the function of USB devices specified. The settings are Enabled and
Disabled.
Summary of Contents for Altix XE250
Page 1: ...SGI Altix XE250 System User s Guide 007 5467 001 ...
Page 3: ...007 5467 001 iii Record of Revision Version Description 001 February 2008 Original printing ...
Page 4: ......
Page 16: ...xvi 007 5467 001 Contents ...
Page 20: ...xx 007 5467 001 Figures ...
Page 28: ......
Page 50: ...2 22 007 5467 001 2 Server Installation Figure 2 3 Install the Server in a Rack 2 1 ...
Page 55: ...Node Board Installation 007 5467 001 3 27 Figure 3 1 Remove the Top Cover 2 1 2 1 1 2 ...
Page 57: ...Node Board Installation 007 5467 001 3 29 Figure 3 2 Node Board Replacement 2 1 ...
Page 80: ...3 52 007 5467 001 3 Advanced Node Board Setup Figure 3 11 Replace DIMMs ...
Page 116: ...3 88 007 5467 001 3 Advanced Node Board Setup ...
Page 123: ...Fans 007 5467 001 4 95 Figure 4 4 Fan Replacement 2 1 Fan 1 Fan 2 Fan 3 ...
Page 176: ...5 148 007 5467 001 5 BIOS Settings ...
Page 186: ...A 158 007 4960 004 A BIOS Power on Self Test ...
Page 195: ...Virtual Media 007 5467 001 B 167 CD ROM Image Figure B 4 CD ROM Image ...
Page 197: ...Virtual Media 007 5467 001 B 169 Drive Redirection Figure B 5 Drive Redirection ...
Page 199: ...Virtual Media 007 5467 001 B 171 Virtual Media Options Figure B 6 Virtual Media Options ...
Page 211: ...KVM Settings 007 5467 001 B 183 Figure B 11 User Console Settings ...
Page 229: ...Maintenance 007 5467 001 B 201 Figure B 20 Device Information ...
Page 236: ...B 208 007 5467 001 B IPMI 2 0 Management Utility ...
Page 244: ......
Page 252: ......
Page 258: ...I 230 007 5467 001 Index ...