| 基于马尔可夫模型的数据值预取方案 |
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| 引用本文： | 谢学军,叶以正,邱善勤,喻明艳.基于马尔可夫模型的数据值预取方案[J].电子学报,2007,35(2):307-310. |
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| 作者姓名： | 谢学军 叶以正 邱善勤 喻明艳 |
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| 作者单位： | 哈尔滨工业大学微电子中心,黑龙江哈尔滨,150001;信息产业部软件与集成电路促进中心,北京,100038;哈尔滨工业大学微电子中心,黑龙江哈尔滨,150001;信息产业部软件与集成电路促进中心,北京,100038 |
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| 摘 要： | 根据程序中Load指令的行为特征构造马尔可夫模型,进而提出预取器的结构方案.SPEC仿真结果表明,与采用二级值预测方案以及基于程序语句相关的预取方案相比,在预测指令的覆盖率上分别提高了9.51%和2.02%,在预测精度上分别提高了12.9%和8.2%,而在IPC上,则分别提高了16.7%和7.4%.
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| 关 键 词： | 数据相关 马尔可夫模型 数据值预取 |
| 文章编号： | 0372-2112（2007）02-0307-04 |
| 收稿时间： | 2006-05-19 |
| 修稿时间： | 2006-05-192006-10-20 |
Data Value Prefetching Method Based on Markov Model |
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| XIE Xue-jun,YE Yi-zheng,QIU Shan-qin,YU Ming-yan.Data Value Prefetching Method Based on Markov Model[J].Acta Electronica Sinica,2007,35(2):307-310. |
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| Authors: | XIE Xue-jun YE Yi-zheng QIU Shan-qin YU Ming-yan |
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| Affiliation: | 1. Microelectronics Center,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;2. Software and Integrated Circuit Promotion Center,Ministry of Information Industry,Beijing 100038,China |
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| Abstract: | A data prefetching method was proposed based on a Markov model, which was constructed according to the behavioral characteristics of LOAD instructions. SPEC simulation result shows that this work is preferable to Two-level value prefetching method and Syntax-based larefetching method as its instruction-prefetching coverage was increased by 9.51% and 2.02% ,its prefetching accuracy was increased by 12.9% and 8.2% and its IPC was increased by 16.7% and 7.4% respectively. |
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| Keywords: | data dependence markov model data value prefetching |
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