零数据置换时间开销的多媒体扩展体系  

Multimedia Extension Architecture without Data Permutation Time Overhead

作　　者：秦兴[1] 

机构地区：[1]杭州电子科技大学微电子CAD所,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2007年第5期1-4,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家863计划资助项目(AA1Z1271)

摘　　要：为了减少传统SIMD多媒体扩展体系存在的数据置换时间开销,该文提出了一种新的多媒体扩展体系。该体系在指令定义中,包含显性的数据置换信息;在实现体系中,融合了计算和数据置换操作。采用H.264的解码程序测试,与基本型的双发射SIMD处理器体系比较表明:整体上可以获得1.4到1.5的加速,而程序代码大小却减少了17.8%。本体系的硬件实现基于TSMC 0.18μm工艺综合显示,增加的数据置换网络只占用了0.66%的芯片面积和0.71ns的延时。A novel multimedia extension architecture was proposed to reduce the time overhead of data permutation caused by conventional SIMD multimedia extension architecture.The architecture contains explicit data permutation information in instructions definition and merges computation with data permutation operations in hardware.H.264 decoder algorithm was used for benchmarking.It was shown that the architecture could gain 1.4 to 1.5 acceleration with reduction 17.8% code size for the whole algorithm compared to the baseline dual issued SIMD processor architecture.After the architecture hardware was synthesized based on TSMC 0.18 um,it was shown that the added data permutation network only caused 0.66% extra chip area and 0.71ns delay.

关 键 词：单指令多数据 数据置换 多媒体处理 

分 类 号：TN401[电子电信—微电子学与固体电子学]