| 一种片上众核结构共享Cache动态隐式隔离机制研究 |
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| 引用本文： | 宋风龙,刘志勇,范东睿,张军超,余磊.一种片上众核结构共享Cache动态隐式隔离机制研究[J].计算机学报,2009,32(10). |
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| 作者姓名： | 宋风龙 刘志勇 范东睿 张军超 余磊 |
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| 作者单位： | 1. 中国科学院计算技术研究所计算机系统结构重点实验室,北京,100190;中国科学院研究生院,北京,100039
2. 中国科学院计算技术研究所计算机系统结构重点实验室,北京,100190 |
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| 基金项目： | 国家自然科学基金重点项目，国家"九七三"重点基础研究发展规划项目基金，国家"八六三"高技术研究发展计划项目基金，北京市自然科学基金 |
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| 摘 要： | 访存带宽是限制众核处理器件能提升的关键,将片上最后一级Cache设计为所有处理器核共享是必要的.在共享Cache中隔离放置冲突的数据,是提高共享Cache性能的关键.文中提出了缓存块链接的硬件方法,用于隔离共享Cache中不同线程之间的数据.文中基于时钟精准的片上众核结构模拟器,使用Splash2程序组和生物信息学中的仟务,对所提机制进行了评估.实验结果表明,与传统共享Cache相比,使用缓存块链接机制时,使得共享Cache的冲突性缺失率降低约20%,而使得IPC平均提高了约10%.
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| 关 键 词： | 众核 共享Cache 数据冲突 资源隔离 容量划分 |
An Implicitly Dynamic Shared Cache Isolation in Many-Core Architecture |
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| SONG Feng-Long,LIU Zhi-Yong,FAN Dong-Rui,ZHANG Jun-Chao,YU Lei.An Implicitly Dynamic Shared Cache Isolation in Many-Core Architecture[J].Chinese Journal of Computers,2009,32(10). |
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| Authors: | SONG Feng-Long LIU Zhi-Yong FAN Dong-Rui ZHANG Jun-Chao YU Lei |
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| Affiliation: | SONG Feng-Long1),2) LIU Zhi-Yong1) FAN Dong-Rui1) ZHANG Jun-Chao1) YU Lei1),2)1)(Key Laboratory of Computer System and Architecture,Institute of Computing Technology,Chinese Academy of Sciences,Beijing100190)2)(Graduate University of Chinese Academy of Sciences,Beijing 100039) |
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| Abstract: | Memory bandwidth is critical to overall performance,especially for on-chip many-core architecture. It may be necessary to design a shared last level on-chip cache,to eliminate capacity wasted by multiple copies of one data block in private caches. However,when it comes to on-chip architecture,the conflict in shared cache becomes more serious than traditional single processor architecture. It is crucial to isolate conflicting data blocks in shared cache. This paper proposes a novel hardware approach,that is,... |
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| Keywords: | many-core architecture shared cache conflict resource isolation cache partition |
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