Table 33. Processor Settings details (continued)
Option Description
Kernel DMA Protection This option is set to Disabled by default. When option is set to
Enabled, BIOS and Operating System will enable direct memory
access protection for DMA capable peripheral devices using
virtualization technology.
Directory Mode Enables or disables the directory mode. This option is set to
Enabled by default.
Adjacent Cache Line Prefetch Optimizes the system for applications that need high utilization
of sequential memory access. This option is set to Enabled by
default. You can disable this option for applications that need
high utilization of random memory access.
Hardware Prefetcher Enables or disables the hardware prefetcher. This option is set
to Enabled by default.
DCU Streamer Prefetcher Enables or disables the Data Cache Unit (DCU) streamer
prefetcher. This option is set to Enabled by default.
DCU IP Prefetcher Enables or disables the Data Cache Unit (DCU) IP prefetcher.
This option is set to Enabled by default.
Sub NUMA Cluster Enables or disables the Sub NUMA Cluster. This option is set to
Disabled by default.
MADT Core Enumeration Specifies the MADT Core Enumeration. This option is set
to default in Round Robin. Linear option supports industry
core enumeration whereas, Round Robin option supports Dell
optimized core enumeration.
UMA Based Clustering It is a read-only field and displays as Quadrant , when Sub
NUMA Cluster is disabled or displays as Disabled, when Sub
NUMA Cluster is either 2-way or 4-way.
UPI Prefetch Enables you to get the memory read started early on DDR
bus. The Ultra Path Interconnect (UPI) Rx path spawns the
speculative memory that is read to Integrated Memory Controller
(iMC) directly. This option is set to Enabled by default.
XPT Prefetch This option is set to Enabled by default.
LLC Prefetch Enables or disables the LLC Prefetch on all threads. This option
is set to Enabled by default.
Dead Line LLC Alloc Enables or disables the Dead Line LLC Alloc. This option is set to
Enabled by default. You can enable this option to enter the dead
lines in LLC or disable the option to not enter the dead lines in
LLC.
Directory AtoS Enables or disables the Directory AtoS. AtoS optimization
reduces remote read latencies for repeat read accesses without
intervening writes. This option is set to Disabled by default.
AVX P1 Enables you to reconfigure the processor Thermal Design Power
(TDP) levels during POST based on the power and thermal
delivery capabilities of the system. TDP verifies the maximum
heat the cooling system is must dissipate. This option is set to
Normal by default.
NOTE: This option is only available on certain stock keeping
units (SKUs) of the processors.
Intel SST-BF Enables Intel SST-BF. This option is displayed if Performance Per
Watt (operating system) or Custom (when OSPM is enabled)
system profiles are selected. This option is set to Disabled by
default.
Pre-operating system management applications 37
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