基于緩存行為特征的線程數(shù)據預取距離控制策略

黃艷; 張啟坤; 段趙磊; 古志民

doi:10.11999/JEIT141429

基于緩存行為特征的線程數(shù)據預取距離控制策略

doi: 10.11999/JEIT141429

1.
(鄭州輕工業(yè)學院軟件學院鄭州 450002)
2.
(鄭州輕工業(yè)學院計算機與通信工程學院鄭州 450002)
3.
(北京理工大學計算機學院北京 100081)

基金項目:

國家自然科學基金(61370062)，鄭州市科技攻關計劃項目(20130725)和博士基金項目(2013BSJJ050)資助課題

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- 文章訪問數(shù): 1577
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2014-11-13
- 修回日期: 2015-03-17
- 刊出日期: 2015-07-19

Prefetch Distance Control Strategy Based on Cache Behavior in Threaded Prefetching

1.
(Department of Software Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China)
2.
(College of Computer and Communication Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China)

摘要

摘要: 針對目前大多數(shù)面向指針應用程序的線程數(shù)據預取方法在預取距離控制方面的不足，該文提出一種基于緩存行為特征的數(shù)據預取距離控制策略。該策略利用指針應用程序執(zhí)行時的數(shù)據緩存特征構建預取距離控制模型，以避免共享緩存污染，降低系統(tǒng)資源競爭，并通過忽略對部分非循環(huán)依賴數(shù)據預取平衡幫助線程與主線程間的執(zhí)行任務，提高線程數(shù)據預取的時效性。實驗結果表明，通過該策略控制線程數(shù)據預取距離能進一步提高線程預取性能。
- 片上多處理器 /
- 線程預取 /
- 幫助線程 /
- 預取率 /
- 預取距離
Abstract: Due to the deficiencies in prefetch distance controlling of most threaded data prefetching methods for pointer application, a prefetch distance control strategy based on the cache behavior characteristics is proposed. In this paper, the prefetch distance control model is constructed using the runtime data cache features of pointer applications to reduce cache pollution and system resources contention. By skipping loop-carried independencies data accesses, the task between main thread and helper thread is balanced and the timeliness of threaded prefetching is improved. The experimental results show that the proposed approach can optimize the performance of threaded prefetching mechanism.
- Chip Multi-Processors (CMP) /
- Threaded prefetching /
- Helper thread /
- Prefetch ratio /
- Prefetch distance

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參考文獻(24)

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