Dell PowerEdge R760XA Installation and Service Manual - Page 38

Processor Settings, Table 36. Memory Settings details continued, Table 37. Processor Settings details

Page 38 highlights

Table 36. Memory Settings details (continued) Option Description mapped out. When set to Enabled it can impact the system performance under certain workloads. This feature is applicable for x4 DIMMs only. This option is set to Enabled by default. Memory training When option is set to Fast and memory configuration is not changed, the system uses previously saved memory training parameters to train the memory subsystems and system boot time is also reduced. If memory configuration is changed, the system automatically enables Retrain at Next boot to force one-time full memory training steps, and then go back to Fast afterward. When option is set to Retrain at Next boot, the system performs the force one-time full memory training steps at next power on and boot time is slowed on next boot. When option is set to Enable, the system performs the force full memory training steps on every power on and boot time is slowed on every boot. DIMM Self Healing (Post Package Repair) on Uncorrectable Memory Error Correctable Error Logging Memory Map Out Enables or disables Post Packing Repair (PPR) on uncorrectable memory error. This option is set to Enabled by default. Enables or disables correctable error logging. This option is set to Disabled by default. This option controls DIMMs slots on the system. This option is set to Enabled by default. It allows to disable system installed DIMMs. Processor Settings To view the Processor Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Processor Settings. Table 37. Processor Settings details Option Description Logical Processor Each processor core supports up to two logical processors. If this option is set to Enabled, the BIOS displays all the logical processors. If this option is set to Disabled, the BIOS displays only one logical processor per core. This option is set to Enabled by default. CPU Interconnect Speed Enables you to govern the frequency of the communication links among the processors in the system. NOTE: The standard and basic bin processors support lower link frequencies. The options available are Maximum data rate, 16 GT/s, 14.4 GT/s, and 12.8 GT/s. This option is set to Maximum data rate by default. Maximum data rate indicates that the BIOS runs the communication links at the maximum frequency supported by the processors. You can also select specific frequencies that the processors support, which can vary. For best performance, you should select Maximum data rate. Any reduction in the communication link frequency affects the performance of nonlocal memory access and cache coherency traffic. In addition, it can slow access to non-local I/O devices from a particular processor. 38 Pre-operating system management applications

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Table 36. Memory Settings details (continued)
Option
Description
mapped out. When set to
Enabled
it can impact the system performance
under certain workloads. This feature is applicable for x4 DIMMs only. This
option is set to
Enabled
by default.
Memory training
When option is set to
Fast
and memory configuration is not changed,
the system uses previously saved memory training parameters to train
the memory subsystems and system boot time is also reduced. If memory
configuration is changed, the system automatically enables
Retrain at
Next boot
to force one-time full memory training steps, and then go back
to
Fast
afterward.
When option is set to
Retrain at Next boot
, the system performs the
force one-time full memory training steps at next power on and boot time
is slowed on next boot.
When option is set to
Enable
, the system performs the force full
memory training steps on every power on and boot time is slowed on
every boot.
DIMM Self Healing (Post Package Repair) on
Uncorrectable Memory Error
Enables or disables Post Packing Repair (PPR) on uncorrectable memory
error. This option is set to
Enabled
by default.
Correctable Error Logging
Enables or disables correctable error logging. This option is set to
Disabled
by default.
Memory Map Out
This option controls DIMMs slots on the system. This option is set to
Enabled
by default. It allows to disable system installed DIMMs.
Processor Settings
To view the
Processor Settings
screen, power on the system, press F2, and click
System Setup Main Menu
>
System
BIOS
>
Processor Settings
.
Table 37. Processor Settings details
Option
Description
Logical Processor
Each processor core supports up to two logical processors. If
this option is set to
Enabled
, the BIOS displays all the logical
processors. If this option is set to
Disabled
, the BIOS displays
only one logical processor per core. This option is set to
Enabled
by default.
CPU Interconnect Speed
Enables you to govern the frequency of the communication links
among the processors in the system.
NOTE:
The standard and basic bin processors support lower
link frequencies.
The options available are
Maximum data rate
,
16 GT/s
,
14.4 GT/s
, and
12.8 GT/s
. This option is set to
Maximum data rate
by default.
Maximum data rate indicates that the BIOS runs the
communication links at the maximum frequency
supported by the processors. You can also select specific
frequencies that the processors support, which can vary.
For best performance, you should select
Maximum data rate
.
Any reduction in the
communication link frequency affects the performance of non-
local memory access and cache coherency traffic.
In addition, it can slow access to non-local I/O devices from a
particular processor.
38
Pre-operating system management applications