异构多核系统中编译器指导的I/O代理技术  

Compiler-directed I/O Agent Technique in Isomerous Multi-core System

作　　者：王珊珊[1] 魏迪[1] 文延华[1] 何王全[1] 

机构地区：[1]江南计算技术研究所,江苏无锡214083

出　　处：《计算机工程》2011年第21期282-284,共3页Computer Engineering

基　　金：国家"973"计划基金资助项目(2007CB310900)

摘　　要：在异构多核系统中,精简设计的从处理器核无法运行操作系统,且不支持终端打印和读写文件等常用I/O操作。为此,提出编译器指导、主处理器代理执行的I/O操作技术,采用信息交互、中断处理等方法,实现聚合代理并优化从处理器代码中的I/O操作功能。实验证明,编译器指导的I/O代理性能比系统级I/O代理高5倍以上。There is no operation system running on slave processors in isomerous multi-core architecture system,so user’s applications cannot do input and output operations,such as read/write file and printf.In order to solve the I/O problem,this paper researches compiler-directed I/O agent technique,that let the master core do I/O operations for the slave cores.Through I/O information communicating,interrupting functions,this paper realizes the I/O agent and combination optimization technique,which can gather the continuous I/O operations in slave processor codes and only do once agent.Experiments prove that the performance of compiler-directed I/O agent is about five times higher than system’s I/O agent.

关 键 词：异构多核系统 I/O代理 聚合优化 编译器指导 主处理器 从处理器 

分 类 号：TP334.4[自动化与计算机技术—计算机系统结构]