Experiences with software MPEG-2 video decompression on an SMP PC

被引：1

作者：

Bala, A ^{[1
]}

Shah, D ^{[1
]}

Feng, WC ^{[1
]}

Panda, DK ^{[1
]}

机构：

[1] Ohio State Univ, Dept Comp & Informat Sci, Columbus, OH 43201 USA

来源：

PROCEEDINGS OF THE 1998 ICPP WORKSHOPS ON ARCHITECTURAL AND OS SUPPORT FOR MULTIMEDIA APPLICATIONS - FLEXIBLE COMMUNICATION SYSTEMS - WIRELESS NETWORKS AND MOBILE COMPUTING | 1998年

关键词：

MPEG-2; SMP; video decompression;

D O I：

10.1109/ICPPW.1998.721871

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Software implementations of MPEG decompression provide flexibility but at the cost of being CPU intensive. In this paper, we describe our results om implementing a two process MPEG-2 video decompression algorithm in software on a dual processor SMP machine. Our approach attempts to decompose the video decoding process into functional (rather than spatial) sub-tasks. This approach will allow us to more naturally extend the MPEG-2 video decompression to work with NOW technologies. We have tried out two different approaches, one using shared memory and the other using threads to parallelize the MPEG decoding process on a dual processor SMP system. Our results indicate that the common myth of "MPEG decoding is memory bottlenecked" is false. In particular our results show that a speedup of upto 1.7 is obtainable by using a simple functional decomposition of the MPEG decoder.

引用

页码：29 / 35

页数：7