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标题：Early Tag Access for Reducing L1 Data Cache Energy for Memory Access
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作者：S.Manoj Kumar ; P.SaravanaKumar ; A.Sathish Kumar 等
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
期号：MULTICON
页码：428
出版社：S&S Publications
摘要：Modern Multicore processors are employing large last-level caches, for example Intel’s E7-8800processor uses 24MB L3 cache. Further with each CMOS technology generation, leakage energy has been dramaticallyincreasing and hence, leakage energy is expected to become a major source of energy dissipation, especially in lastlevelcaches (LLCs). The conventional schemes of cache energy saving either aim at saving dynamic energy or arebased on properties specific to first-level caches, and thus these schemes have limited utility for last-level caches.Further, several other techniques require offline profiling or per-application tuning and hence are not suitable forproduct systems. This project proposes a novel cache leakage energy saving schemes for single-core and multicoresystems; desktop, QoS, real-time and server systems. Proposed here is a software-controlled, hardware-assistedtechniques which use early tag access (ETA) to configure the cache to the most energy efficient configuration whilekeeping the performance loss bounded. This technique is compared with other techniques and ETA outperforms themin their energy efficiency. This research has important applications in improving energy-efficiency of higher-endembedded, desktop, server processors and multitasking systems.