Double Circulation Wear Leveling for PCM-Based Embedded Systems

摘要：

　　Phase change memory (PCM) has emerged as a promising candidate to replace DRAM in embedded systems with its attractive features.However,the endurance of PCM greatly limits its adoption in embedded systems.It can only sustain a limited number of write operations.To solve this issue,we propose a simple,novel,and effective wear leveling technique,called Double Circulation Wear Leveling (DCWL),to evenly distribute write activities across the PCM chips.The basic idea is to periodically move the hot region across the whole PCM chips.When a movement of the hot region is triggered,several small areas in the hot region move to the right.The experimental results show that our wear leveling technique can effectively improve the lifetime of PCM chips compared with the previous work.

关键词： PCM Wear Leveling Endurance Non-volatile Memory

作者: Guan Wang Fei Peng Lei Ju Lei Zhang Zhiping Jia

作者单位: School of Computer Science and Technology,Shandong University,Jinan,China

会议类型: 国际会议

会议名称: ACA,Advanced Computer Architecture(2014年全国计算机体系结构学术会议)

会议地点: 沈阳

会议语种:英文

页码: 190-200

在线出版日期: 2014-08-23（万方平台首次上网日期，不代表论文的发表时间）