面向功耗优化的片上存储器分配策略  

Energy Oriented Optimization of Allocation Strategy for On-Chip Memory

作　　者：金晶[1] 浦汉来[1] 凌明[1] 

机构地区：[1]东南大学国家专用集成电路系统工程技术研究中心,江苏南京210096

出　　处：《应用科学学报》2006年第2期193-198,共6页Journal of Applied Sciences

基　　金：国家"863"高技术研究发展计划资助项目(2003AA1Z1340)

摘　　要：综合考虑程序的数据块、全局变量、指令块,运用ECFG分析程序中对象间关系引发的容量和功耗影响,并考虑由于指令跳转带来的影响,最终结合ILP采用细化后的Knapsack算法,提出一种针对功耗优化的SoC片上存储器分配策略.仿真结果表明,采用该方法,存储子系统功耗可显著降低,一般达50%左右,最大可达95%以上.In this paper, an allocation strategy for on-chip memory is proposed to optimize energy of memory system. With data, global variable, instruction and branch instruction, the strategy uses ECFG to get the effect of energy and capacity caused by the object relationship. By using refined knapsack arithmetic with ILP, experiment results are obtained showing that, for most applications, general energy consumption of a memory system decreases by up to 50 %. Especially, when an application＇ s capacity approaches the content of SPM content, this figure is higher than 95 %.

关 键 词：片上存储器 内存子系统 功耗 分配策略 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]