A Survey of Non-Volatile Main Memory Technologies:State-of-the-Arts,Practices,and Future Directions  

作　　者：Hai-Kun Liu Di Chen Hai Jin Xiao-Fei Liao Binsheng He Kan Hu Yu Zhang 

机构地区：[1]National Engineering Research Center for Big Data Technology and System,Huazhong University of Science and Technology,Wuhan 430074,China [2]Services Computing Technology and System Laboratory,Huazhong University of Science and Technology Wuhan 430074,China [3]Cluster and Grid Computing Laboratory,Huazhong University of Science and Technology,Wuhan 430074,China [4]School of Computing Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China [5]School of Computing,National University of Singapore,Singapore 117418,Singapore

出　　处：《Journal of Computer Science & Technology》2021年第1期4-32,共29页计算机科学技术学报（英文版）

基　　金：Supported jointly by the National Natural Science Foundation of China under Grants Nos. 61672251, 61732010, 61825202, and 61929103.

摘　　要：Non-Volatile Main Memories (NVMMs) have recently emerged as a promising technology for future memory systems. Generally, NVMMs have many desirable properties such as high density, byte-addressability, non-volatility, low cost, and energy efficiency, at the expense of high write latency, high write power consumption, and limited write endurance. NVMMs have become a competitive alternative of Dynamic Random Access Memory (DRAM), and will fundamentally change the landscape of memory systems. They bring many research opportunities as well as challenges on system architectural designs, memory management in operating systems (OSes), and programming models for hybrid memory systems. In this article, we revisit the landscape of emerging NVMM technologies, and then survey the state-of-the-art studies of NVMM technologies. We classify those studies with a taxonomy according to different dimensions such as memory architectures, data persistence, performance improvement, energy saving, and wear leveling. Second, to demonstrate the best practices in building NVMM systems, we introduce our recent work of hybrid memory system designs from the dimensions of architectures, systems, and applications. At last, we present our vision of future research directions of NVMMs and shed some light on design challenges and opportunities.

关 键 词：non-volatile memory persistent memory hybrid memory systems memory hierarchy 

分 类 号：TP33[自动化与计算机技术—计算机系统结构]