Supermicro SUPERSERVER 1028R-TDW - Page 57

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Chapter 7: BIOS
7-137-12
SUPERSERVER 1028R-TDW User's Manual
 Intel VT for Directed I/O (VT-d)
Intel VT for Direct I/O (VT-d)
Intel
®
VT for Directed I/O (VT-d)
Select Enable to use Intel Virtualization Technology support for Direct I/O VT-d
support by reporting the I/O device assignments to the VMM (Virtual Machine
Monitor) through the DMAR ACPI Tables. This feature offers fully-protected I/O
resource sharing across Intel platforms, providing greater reliability, security and
availability in networking and data-sharing. The options are Enable and Disable.
Interrupt Remapping
Select Enable for Interrupt Remapping support to enhance system performance.
The options are Enable and Disable.
QPI (Quick Path Interconnect) Conguration
QPI General Conguration
QPI Status
The following information will display:
• Number of CPU
• Number of IIO
• Current QPI Link Speed
• Current QPI Link Frequency
• QPI Global MMIO Low Base/Limit
• QPI Global MMIO High Base/Limit
• QPI PCIe Conguration Base/Size
Link Speed Mode
Use this item to select the data transfer speed for QPI Link connections. The
options are Fast and Slow.
Link Frequency Select
Use this item to select the desired frequency for QPI Link connections. The op-
tions are 6.4GB/s, 8.0GB/s, 9.6GB/s, Auto, and Auto Limited.
Link L0p Enable
Select Enable for Link L0p support. The options are Enable and Disable.
Link L1 Enable
Select Enable for Link L1 support. The options are Enable and Disable.
COD Enable (Available when the OS and the CPU support this feature)
Select Enabled for Cluster-On-Die support to enhance system performance in
cloud computing. The options are Enable, Disable, and Auto.
Early Snoop (Available when the OS and the CPU support this feature)
Select Enable for Early-Snoop support to enhance system performance. The
options are Enable, Disable, and Auto.
Isoc Mode
Select Enable for Isochronous support to meet QoS (Quality of Service) require-
ments. This feature is especially important for Virtualization Technology. The
options are Enable and Disable.
Memory Conguration
Enforce POR
Select Enable to enforce POR restrictions on memory frequency and voltage
programming. The options are Enabled and Disabled.
Memory Frequency
Use this feature to set the maximum memory frequency for onboard memory
modules. The options are Auto, 1333, 1400, 1600, 1800, 1867, 2000, 2133,
2200, 2400, 2600, 2667, and Reserved (Do not select Reserved).
Data Scrambling
Select Enabled to enable data scrambling to enhance system performance and
data integrity. The options are Auto, Disabled and Enabled..
Set Throttling Mode
Throttling improves reliability and reduces power consumption in processors via
automatic voltage control during processor idle states. The options are Disabled
and CLTT (Closed Loop Thermal Throttling).
DRAM RAPL (Running Average Power Limit) Baseline
Use this feature to set the run-time power-limit baseline for the DRAM modules.
The options are Disable, DRAM RAPL Mode 0, and DRAM RAPL Mode 1.