NEC express5800 A2010b User Manual page 488

Chapter 4 Appendix
BIOS Related
Configuration menu → SystemBIOS
Operation mode
BIOS Basic/
POST Error Pause
COPT Related
Capacity
Operation mode
Core Optimization
Mode
Spare Core
Configuration Mode
Disable CPU Cores
488
Parameter
([ ]: Default setting)
Enable
[Disable]
Parameter
([ ]: Default setting)
[Decentralize]
Centralize
[Static]
Dynamic
[0]
(Allowable value: 0 to
maximum number of cores)
* The maximum number of
cores depends on server
model.
Express5800/A1040b, A2040b, A2020b, A2010b User's Guide
When
applied
At next boot Enable or disable the feature to suppress OS
startup until user interruption if an error is
detected during POST. If set to [Disabled], does
not wait for user interruption and tries OS startup
even if an error is detected.
It is recommended to set [Disabled] because the
POST error in this case is a correctable error
(the hardware corrects an error, and the system
can continue operation).
In the system that does not permit continuous
operation even if an error is correctable, set this
item to [Enabled].
When
applied
BIOS When using COPT feature on the server having
process several CPU sockets, specify the assigning
phase method.
Decentralize: Assign the CPU cores that are
logically enabled to several CPU sockets
equally. For example, when the server has 3
CPU sockets on it and 9 CPU cores are logically
enabled, 3 CPU cores are enabled on each CPU
socket. If the server has only one CPU socket, 9
CPU cores are enabled on that socket. The CPU
resources are used equally and load to CPU
socket are decentralized. Performance
improvement is expected by this method.
Centralize: Assign the logically enabled CPU
cores to as little CPU sockets as possible. For
example, when the server has 3 CPU sockets on
it and 9 CPU cores are logically enabled, 9 CPU
cores are enabled on a single CPU socket, and
the residual CPU cores on other sockets are not
enabled. This can reduce the cost for license fee
when using the software that requires license fee
in proportional to the number of CPU sockets.
At next boot When using COPT feature, specify whether the
configuration change which is the number of
enabled cores and location to assign enabled
cores is allowed while the OS is running or not.
Static: Can change the number of enabled cores
and location to assign enabled cores only while
the DC power is off. These changes are ignored
if they are performed while the OS is running.
Dynamic: Can change the number of enabled
cores and location to assign enabled cores even
while the OS is running.
At next boot Specify the number of cores to be disabled.
2. Operation Mode
Description
Description