高技术通讯2025，Vol.35Issue(6)：565-578,14.DOI:10.3772/j.issn.1002-0470.2025.06.001
远端内存访问性能优化关键技术综述
Survey of key technologies for optimizing far memory access performance
摘要
Abstract
In data centers,memory demands for applications are increasing rapidly.A variety of far memory technologies that provide larger capacity but also higher access latency have been introduced into data centers.However,the longer access latency with higher variability of far memory poses challenges for conventional computer architectures.This paper systematically summarizes the challenges that far memory brings to conventional processor microarchitec-ture designs.Additionally,this paper reviews the key technologies in recent years for latency-tolerancing,summari-zing their pros and cons when applied to far memory scenarios.This paper concludes that solving the issues of ac-cessing far memory requires a cooperative software-hardware solution.Hardware provides sufficient resources to maintain outstanding memory requests,while software assists in dynamic instruction scheduling.Additionally,a balance must be struck between specialization and generality of the solution.Furthermore,mechanisms for optimi-zing branch misprediction handling need to be considered to reduce the performance impact of mis-speculation.关键词
远端内存/内存级并行/延迟容忍Key words
far memory/memory-level parallelism/latency tolerance引用本文复制引用
王鹿鸣,卢天越,陈明宇..远端内存访问性能优化关键技术综述[J].高技术通讯,2025,35(6):565-578,14.基金项目
国家重点研发计划(2022YFB4500403)资助项目. （2022YFB4500403）
