74
• Current UPI Link Frequency
• UPI Global MMIO Low Base/Limit
• UPI Global MMIO High Base/Limit
• UPI Pci-e Configuration Base/Size
Degrade Precedence
Select
Topology Precedence
to degrade features if system options are in conflict. Select
Feature Precedence to degrade topology if system options are in conflict. The options
are
Topology Precedence
and Feature Precedence.
Link L0p Enable
Select Enable for the QPI to enter the L0p state for power saving. The options are Dis-
able, Enable, and
Auto
.
Link L1 Enable
Select Enable for the QPI to enter the L1 state for power saving. The options are Dis-
able, Enable, and
Auto
.
IO Directory Cache (IODC)
Use this feature to enable the IO Directory Cache (IODC) support. The options are Dis-
able,
Auto
, Enable for Remote InvItoM Hybrid Push, InvItoM AllocFlow, Enable for Re -
mote InvItoM Hybrid AllocNonAlloc, and Enable for Remote InvItoM and Remote WViLF.
SNC
Sub NUMA Clustering (SNC) is a feature that breaks up the Last Level Cache (LLC) into
clusters based on address range. Each cluster is connected to a subset of the memory
controller. Enabling SNC improves average latency and reduces memory access conges -
tion to achieve higher performance. Select Auto for 1-cluster or 2-clusters depending on
IMC interleave. Select Enable for Full SNC (2-clusters and 1-way IMC interleave). The
options are
Disable
, Enable, and Auto.
XPT Prefetch
XPT Prefetch is a feature that speculatively makes a copy to the memory controller of
a read request being sent to the LLC. If the read request maps to the local memory ad -
dress and the recent memory reads are likely to miss the LLC, a speculative read is sent
to the local memory controller. The options are Disable and
Enable
.
KTI Prefetch
KTI Prefetch is a feature that enables memory read to start early on a DDR bus, where
the KTI Rx path will directly create a Memory Speculative Read command to the memory
controller. The options are Disable and
Enable
.
WinFast WS2030 User’s Manual
