SPEC CPU2017 Platform Settings for ASUSTek Systems

Operating System Tuning Parameters

cpupower:

The OS 'cpupower' utility is used to change CPU power governors settings. Available settings are:

• Performance: Run the CPU at the maximum frequency.
• powersave(default): Run the CPU at the minimum frequency.

Firmware / BIOS / Microcode Settings

Patrol Scrub:

Patrol scrubbing is a mechanism for the memory controller to periodically read all memory locations and write back corrected data. The time interval for scrubbing the entire memory is defaulted to 24-hour period. Values for this BIOS option can be: Enabled/Disabled. Current default is Enabled.

Intel VT for Directed I/O (VT-d):

Intel Virtualization Technology for Directed I/O (VT-d) by reporting the I/O device assignment to VMM through DMAR ACPI Tables. Values for this BIOS option can be: Enabled/Disabled. Current default is Enabled.

Hyper-Threading[ALL]:

Enables Hyper Threading(Software Method to Enable Logical Processor threads. Values for this BIOS option can be: Enabled/Disabled. Current default is Enabled.

SNC:

Sub NUMA Clustering (SNC) is a feature for breaking up the LLC into disjoint clusters based on address range, with each cluster bound to a subset of the memory controllers in the system. It improves average latency to the LLC and is an important pre-requisite to enabling KTI prefetch and is a replacement for the Cluster-on-Die feature found in previous processors. Values for this BIOS option can be: Auto/Enabled/Disabled. Current default is Auto ( Set to MRC default, current default is disabled).

IMC Interleaving:

This BIOS option controls the interleaving between the Integrated Memory Controllers (IMCs). If IMC Interleaving is set to two-way, the memory addresses will be interleaved between the two IMCs. If IMC Interleaving is set to one-way, there will be no interleaving. If SNC is enabled, you want one -way interleave. If SNC is disabled, you want two -way interleave. (See also Sub-NUMA Cluster.) Values for this BIOS option can be:

• One-way: no interleaving
• Two-way: interleaving
• Auto: Set to MRC default, current default is two-way interleaving

Current default is Auto.

SR-IOV Support:

In virtualization, single root input/output virtualization or SR-IOV is a specification that allows the isolation of the PCI Express resources for manageability and performance reasons. A single physical PCI Express can be shared on a virtual environment using the SR-IOV specification. If system has SR-IOV capable PCIe Devices, this option Enables or Disables Single Root IO Virtualization Support. Values for this BIOS option can be: Enabled/Disabled. Current default is Enabled.

ENERGY_PERF_BIAS_CFG mode:

This BIOS option allows for processor performance and power optmization. Available settings are:

• Performance: High performance with less need for power saving.
• Balanced Performance (Default Setting): Provides optimal performance efficiency.
• Balanced Power: Provides optimal power efficiency.
• Power: High power saving with less need for performance.

CPU C6 report:

Enable/Disable CPU C6(ACPI C3) report to OS. During the CPU C6 State, the power to all cache is turned off. Current default is Enable.