Dell PowerEdge XR7620 Installation And Service Manual page 51

Table 50. Processor Settings details (continued)
Option
Virtualization Technology
Kernel DMA Protection
Directory Mode
Adjacent Cache Line Prefetch
Hardware Prefetcher
DCU Streamer Prefetcher
DCU IP Prefetcher
Sub NUMA Cluster
MADT Core Enumeration
UMA Based Clustering
UPI Prefetch
XPT Prefetch
LLC Prefetch
Dead Line LLC Alloc
Directory AtoS
AVX P1
Description
However, if power saving considerations outweigh performance,
reduce the frequency of the processor
communication links. Before reducing the frequency, you must
localize the memory and I/O access to the nearest
NUMA node to minimize the impact to system performance.
Enables or disables the virtualization technology for the
processor. This option is set to Enabled by default.
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.
Enables or disables the directory mode. This option is set to
Enabled by default.
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.
Enables or disables the hardware prefetcher. This option is set
to Enabled by default.
Enables or disables the Data Cache Unit (DCU) streamer
prefetcher. This option is set to Enabled by default.
Enables or disables the Data Cache Unit (DCU) IP prefetcher.
This option is set to Enabled by default.
Enables or disables the Sub NUMA Cluster. This option is set to
Disabled by default.
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.
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.
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.
This option is set to Enabled by default.
Enables or disables the LLC Prefetch on all threads. This option
is set to Enabled by default.
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.
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.
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
Pre-operating system management applications 51