流体系结构指令存储器优化设计研究

针对流体系结构中VLIW代码体积对指令存储器的容量和功耗带来的问题,本文通过分析流处理器的指令特征,提出了一种新的VLIW分域压缩技术.在此基础上,本文为流体系结构设计了分布式的片上指令存储器,并提出了SIMD流水的执行模式.实验结果证明,该技术减少了38%的片外指令访存,降低约65%的片上指令存储器空间需求;分布式指令存储器减少了约37%的片上指令存储器面积,使得MASA的系统面积降低了8.92%,并降低了61%的指令存储器功耗.

Optimized Design Research of Instruction Memory for Stream Architecture

The huge VLIW code size has brought serious problems to the capacity and energy consumption of instruction memory in stream architecture.Through analyzing the characteristics of instruction,this paper proposes a novel domain-divided VLIW compression scheme,designs a distributed on-chip instruction memory for stream architecture and proposes a new SIMD pipeline execution model.The experiment results show that about 38% of the off-chip instruction accessing and 65% of the on-chip instruction memory space demand can be reduced by the compression;the distributed instruction memory depresses about 37% of the area of on-chip instruction memory,and about 8.92% of the area of MASA stream processor.At the same time,the energy consumption of the instruction memory is reduced by 61%.