CPU Configuration Menu
Workload Profile
This function allows configuring the BIOS settings to match the selected workload. The options are Disabled, HPC, I/O, Virtualization, Telco NFVI, Telco NFVI-FP, and Telco FlexRAN.
SMT Control
This setting is used to disable symmetric multithreading. To re-enable SMT, a power cycle is needed after selecting the Enable option. Select Auto based on BIOS PCD default setting. The options are Disabled, Enabled, and Auto.
Core Performance Boost
Disable CPB. The options are Disabled and Auto.
Global C-state Control
Controls IO based C-state generation and DF C-states. The options are Disabled, Enabled, and Auto.
ACPI CST C2 Latency
Use this setting to enter in microseconds the decimal value. Larger C2 latency values will reduce the number of C2 transitions and reduce C2 residency. Fewer transitions can help when the performance is sensitive to the latency of C2 entry and exit. The default value is 100.
PPIN Opt-in
Select Unlock/Enabled to use the Protected Processor Inventory Number (PPIN) in the system. The options are Disabled, Enabled, and Auto.
SMEE
This setting controls Secure Memory Encryption (SME) for the system. The options are Disabled, Enabled, and Auto.
Fast Short REP MOVSB (FSRM)
The default is 1, but it can be set to zero for analysis purposes as long as the OS supports it. The options are Auto, Enabled, and Disabled.
Enhanced REP MOVSB/STOSB (ERSM)
This setting optimizes CPU string operations. Disabling ERSM (setting it to 0) can be useful for performance analysis if supported by the operating system. The options are Disabled, Enabled, and Auto.
AVX512
Enable or disable AVX512. The options are Auto, Enabled, and Disabled.
Monitor and MWAIT Disable
This setting controls the availability of the MONITOR, MWAIT, MONITORX, and MWAITX opcodes, which are used for power management and synchronization. The options are Enabled, Disabled, and Auto.
L1 Stream HW Prefetcher
This setting is used to enable or disable the L1 Stream Hardware Prefetcher.The options are Disabled, Enabled, and Auto.
L2 Stream HW Prefetcher
This setting is used to enable or disable the L2 Stream Hardware Prefetcher. The options are Disabled, Enabled, and Auto.
CCD Control
Sets the number of active CCDs. A power cycle is required once this option has been used to remove any CCDs. The options are Auto, 2 CCDs, 4 CCDs, 6 CCDs, 8 CCDs, 10 CCDs, 12 CCDs, and 14 CCDs.
Core Control
Sets the number of cores to be used. Once this option has been used to remove any cores, a power cycle is required for future selections to take effect. The options are Auto, ONE (1+0), TWO (2+0), THREE (3+0), FOUR (4+0), FIVE (5 +0), SIX (6+0), and SEVEN (7+0), TWO (1+1), FOUR (2+2), SIX (3+3), EIGHT (4+4), TEN (5+5), TWELVE (6+6), FOURTEEN (7+7).
SVM Mode
This setting enables or disables CPU Virtualization. The options are Disabled, and Enabled.
Changing the designed PCIe port bifurcation.
CPU information listed,
CPU1 PCIe Package Group P2 The options are Auto, x4x4x4x4, x4x4x8, x8x4x4, x8x8, and x16
CPU1 PCIe Package Group P2
CPU1 PCIe Package Group G2
CPU1 PCIe Package Group P3
CPU1 PCIe Package Group G3
CPU1 PCIe Package Group P1
CPU1 PCIe Package Group G1
CPU1 PCIe Package Group P0
CPU1 PCIe Package Group G0
Changing the designed PCIe port bifurcation.
CPU information listed,
CPU2 PCIe Package Group P2 The options are Auto, x4x4x4x4, x4x4x8, x8x4x4, x8x8, and x16
CPU2 PCIe Package Group P3
CPU2 PCIe Package Group P1
CPU2 PCIe Package Group G1
CPU2 PCIe Package Group P0