SPEC CPU2017 Platform Settings for Uniwide RC124 Servers

Operating System Tuning Parameters

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

Firmware / BIOS / Microcode Settings

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

Select Enable to use Intel Virtualization Technology support for Direct I/O VT-d by reporting the I/O device assignments to the VMM (Virtual Machine Monitor) through the DMAR ACPI tables. This feature offers fully-protected I/O resource sharing across Intel platforms, providing greater reliability, security and availability in networking and data-sharing.

Core Optimizer:

Enable this item to keep the processor operating at the turbo frequency

LLC dead line alloc:

In the Skylake-SP non-inclusive cache scheme, MLC evictions are filled into the LLC. When lines are evicted from the MLC, the core can flag them as "dead" (i.e., not likely to be read again). The LLC has the option to drop dead lines and not fill them in the LLC. If the Dead Line LLC Alloc feature is disabled, dead lines will always be dropped and will never fill into the LLC. This can help save space in the LLC and prevent the LLC from evicting useful data. However, if the Dead Line LLC Alloc feature is enabled, the LLC can opportunistically fill dead lines into the LLC if there is free space available.

SR-IOV Support:

This option enables or disables SIngle Root IO Virtualization Support if the system has SR- IOV capable PCIe devices.

CSM Support:

The Compatibility Support Module (CSM) is a component of the UEFI firmware that provides legacy BIOS compatibility by emulating a BIOS environment, allowing legacy operating systems and some option ROMs that do not support UEFI to still be used.