应用科学学报 ›› 2016, Vol. 34 ›› Issue (6): 724-733.doi: 10.3969/j.issn.0255-8297.2016.06.008

• 电子技术 • 上一篇    下一篇

一种面向媒体应用可重构系统的配置信息缓存管理机制

刘波, 龚宇, 季程, 王晓彤, 梅晨   

  1. 东南大学国家专用集成电路系统工程技术研究中心, 南京 210096
  • 收稿日期:2015-02-02 修回日期:2016-01-20 出版日期:2016-11-30 发布日期:2016-11-30
  • 作者简介:刘波,博士,研究方向:VLSI设计、可重构计算,E-mail:liubo_cnasic@seu.edu.cn
  • 基金资助:

    国家自然科学基金(No.61404028,No.61204023);国家“863”高技术研究发展计划基金(No.2012AA012703)资助

Efficient Management Mechanism for Configuration Cache of Reconfigurable System for Multimedia Applications

LIU Bo, GONG Yu, JI Cheng, WANG Xiao-tong, MEI Chen   

  1. National ASIC System Engineering Technology Research Center, Southeast University, Nanjing 210096, China
  • Received:2015-02-02 Revised:2016-01-20 Online:2016-11-30 Published:2016-11-30

摘要:

面向媒体应用的可重构架构中,配置信息的调度严重限制了可重构系统的性能提升.为此,提出一种层次化配置信息缓存的组织结构,并面向媒体应用提出一种基于配置信息分级策略的配置信息缓存管理机制,包括基于预解析的配置信息预取机制和基于混合优先级的配置信息替换策略. 实验表明,采用该设计方案后配置信息的访问性能提高4.34倍. 采用所述配置信息缓存设计方案的可重构系统可在200 MHz 情况下满足1 080 p,30 fps 的实时解码需求,与同类架构相比性能提高1.8倍以上.

关键词: 配置信息缓存, 媒体应用, 配置信息预取, 可重构计算

Abstract:

The scheduling process of configuration context severely limits the performance of reconfigurable systems for multimedia applications. This paper proposes a management mechanism for configuration cache based on a hierarchical configuration context organization mechanism. It includes a configuration context prefetching mechanism based on preparsing and a hierarchical replacement strategy based on hybrid priorities. Experimental results show that the design described in this paper can improve configuration information access performance by 4.34 times. The proposed data cache structure has been applied in a reconfigurable system and implemented in a real chip. Processing performance of the reconfigurable system based on the proposed data cache structures is better than that of other reconfigurable architectures by more than 1.8 times.

Key words: configuration pre-fetching, reconfigurable computing, configuration cache, multimedia application

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