Energy- and endurance-aware design of phase change memory caches
Energy- and endurance-aware design of phase change memory caches
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DOI：
10.1109/date.2010.5457221
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
Yongsoo Joo;Dimin Niu;Xiangyu Dong;Guangyu Sun;N. Chang;Yuan Xie
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作者：
Yongsoo Joo;Dimin Niu;Xiangyu Dong;Guangyu Sun;N. Chang;Yuan Xie
在新兴的非易失性随机存取存储器技术中，相变存储器(PCM)是最有前途的技术之一。使用PCM实现高速缓冲存储器具有许多优点，例如高密度、非易失性、低泄漏功率和高抗软错误能力。然而，它的缺点，如高写入延迟、高写入能量和有限的写入耐久性，使其无法被用作SRAM高速缓存的临时替代。在本文中，我们研究了一套设计能量和耐久感知的PCM缓存的技术。我们还对PCM缓存的时序、能量、耐久性和面积进行了建模，并将其集成到PCM缓存模拟器中以评估这些技术。实验表明，与寿命不到1小时的基准PCM缓存相比，我们的PCM缓存设计可以实现8%的节能和3.8年的寿命。
Phase change memory (PCM) is one of the most promising technology among emerging non-volatile random access memory technologies. Implementing a cache memory using PCM provides many benefits such as high density, non-volatility, low leakage power, and high immunity to soft error. However, its disadvantages such as high write latency, high write energy, and limited write endurance prevent it from being used as a drop-in replacement of an SRAM cache. In this paper, we study a set of techniques to design an energy- and endurance-aware PCM cache. We also modeled the timing, energy, endurance, and area of PCM caches and integrated them into a PCM cache simulator to evaluate the techniques. Experiments show that our PCM cache design can achieve 8% of energy saving and 3.8 years of lifetime compared with a baseline PCM cache having less than a hour of lifetime.