Balanced Memory Configurations with Second-Generation AMD EPYC ProcessorsPlanning / Implementation

Published
17 Jan 2020
Form Number
LP1268
PDF size
21 pages, 270 KB

Abstract

Configuring a server with balanced memory is important for maximizing its memory bandwidth and overall performance. Lenovo ThinkSystem servers running second-generation AMD EPYC processors have eight memory channels per processor and up to two DIMMs per channel, so it is important to understand what is considered a balanced configuration and what is not.

This paper defines three balanced memory guidelines that will guide you to select a balanced memory configuration. Balanced and unbalanced memory configurations are presented along with their relative measured memory bandwidths to show the effect of unbalanced memory. Suggestions are also provided on how to produce balanced memory configurations.

This paper is for customers and for business partners and sellers wishing to understand how to maximize the performance of Lenovo ThinkSystem servers with second-generation AMD EPYC processors.

Table of Contents

Introduction
Memory topology
Memory interleaving
Balanced memory configurations
About the tests
Applying the balanced memory configuration guidelines
Summary of the performance results
Summary

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