公平运行同时多线程处理器中的线程

被引：1

作者：

孙彩霞

张民选

机构：

[1] 国防科学技术大学计算机学院

来源：

电子学报 | 2008年 / 02期

关键词：

同时多线程; 取指策略; 吞吐量; 公平性;

D O I：

暂无

中图分类号：

TP332 [运算器和控制器（CPU）];

学科分类号：

摘要：

同时多线程(SMT,Simultaneous Multithreading)处理器中,取指策略隐式的决定了共享资源在线程之间的分配,进而决定了吞吐量和公平性.然而,前面对取指策略的研究大都集中在吞吐量优化上,对公平性的研究极少.本文把公平性作为优化目标,提出了一种新颖的取指策略FAIR.实验结果表明:对于所有类型的负载,FAIR都能获得很好的公平性,RPRrange都不超过5%.而且,FAIR并没有以牺牲吞吐量来获取公平性.与ICOUNT这种典型的以优化吞吐量为目标的取指策略相比,FAIR的吞吐量平均只降低了3.8%.

引用

页码：224 / 229

页数：6

共 12 条

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