Tuning UEFI Settings for Performance and Energy Efficiency on AMD Processor-Based ThinkSystem ServersPlanning / Implementation

Properly configuring UEFI parameters in a server is important for achieving a desired outcome such as maximum performance or maximum energy efficiency. This paper defines preset UEFI operating modes for Lenovo® ThinkSystem™ servers running second-generation AMD EPYC processors that are optimized for each of these outcomes. In addition, a thorough explanation is provided for each of the UEFI parameters so they can be fine-tuned for any particular customer deployment.

This paper is for customers and for business partners and sellers wishing to understand how to optimize UEFI parameters to achieve maximum performance or energy efficiency of Lenovo ThinkSystem servers with second-generation AMD EPYC processors.

Introduction
Summary of operating modes
UEFI menu items for SR635 and SR655
UEFI menu items for SR645 and SR665
ThinkSystem server platform design
References

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Changes in the January 2021 update:

• Added section “Low Latency and Low Jitter UEFI parameter settings” on page 35
• Added section “How to use OneCLI and Redfish to access these settings” on page 6
• Added Redfish parameters for each setting in “UEFI menu items for SR645 and SR665” on page 19
• Updated the default for setting “NUMA nodes per socket” on page 15

Related product families

Product families related to this document are the following:

• Processors
• ThinkSystem SR655 Server
• ThinkSystem SR635 Server