赛道存储器移动操作的温度模型及控制策略

发布时间：2018-03-24 12:52

  本文选题：赛道存储器　切入点：热力模型　出处：《计算机研究与发展》2017年01期

【摘要】：赛道存储器(racetrack memory,RM)作为一种新型的非易失存储器件,对于未来存储结构设计具备很高的竞争力.RM通过将多个位信息存储在一个条带状的磁材料纳米线上,从而达到很高的存储密度.同时,又能够提供很快的读/写访问速度.为了能够访问RM条带上不同位置的位信息,需要引入一种特有的"移动"操作.然而,研究人员观察到移动操作需要较高驱动电流并产生大量热量,从而引起性能和稳定性的下降,甚至由于温度过高引起存储单元的损坏.现在仍缺乏一个关于RM移动的热力模型来估算运行中的温度.更重要的是,RM急需一个体系结构级的管理策略来避免温度过高带来的稳定性问题.针对这些问题,首先提出了一个热力模型来研究RM使用时温度与设计参数的关系.同时,为了提高RM的稳定性,一种基于"配额制度"的移动操作管理策略被讨论,以保证单位时间内的移动强度被限定在特定阈值下.实验结果表明,该方法能够以3.5%的性能代价将温度升高控制在20℃之内.
[Abstract]:Racetrack memory RMs, as a new type of nonvolatile memory device, are highly competitive for future memory design. RM stores multiple bits of information on a strip of magnetic nanowires. Therefore, the storage density is very high. At the same time, it can provide fast read / write access speed. In order to be able to access the bit information with different positions on the RM bar, it is necessary to introduce a special "move" operation. The researchers observed that mobile operations require higher driving currents and generate large amounts of heat, which can lead to a decline in performance and stability. There is still a lack of a thermal model on RM movement to estimate the temperature in operation. More importantly, RM urgently needs an architecture level management strategy to avoid temperature. Stability problems caused by too much. In response to these problems, In this paper, a thermodynamic model is proposed to study the relationship between the temperature and design parameters when RM is used. In order to improve the stability of RM, a mobile operation management strategy based on "quota system" is discussed. The experimental results show that the temperature rise can be controlled within 20 鈩，

本文编号：1658379