现代电子技术2024，Vol.47Issue(6)：49-54,6.DOI:10.16652/j.issn.1004-373x.2024.06.008
基于申威SIMD指令的H.264编码优化
H.264 encoding optimization based on SW SIMD instruction
黄朴 1刘世巍 1张昊 1王聪1
作者信息
- 1. 中电科申泰信息科技有限公司, 江苏 无锡 214000
- 折叠
摘要
Abstract
Domestic Shenwei processors emerged relatively late,and their performance in the multimedia field is not yet outstanding.At the same time,single instruction multiple data(SIMD)in general-purpose processors are favored by processor manufacturers for effectively improving parallel processing capabilities.In order to improve the multimedia processing capability of the domestic independent platform Shenwei architecture,a SIMD instruction set H.264 encoding optimization method based on the Shenwei architecture is proposed by combining with the SIMD instruction system of the Core3B system of the Shenwei architecture.Based on the parallel structure characteristics of the Shenwei processor,high-frequency hotspot functions strongly related to encoding performance under two mainstream video resolutions are collected by means of system performance analysis tools such as Perf and Top instructions adapted by Shenwei.The experimental results show that this method can improve the average encoding performance of H.264 under the Shenwei architecture by about 30%,and the corresponding work results have been pushed to the Shenwei community,enhancing the work experience of domestic computers based on Shenwei processors in the field of desktop multimedia applications.关键词
单指令流多数据流/H.264标准/申威处理器/热点函数/程序并行化/细粒度Key words
SIMD/H.264 standard/Shenwei processor/hotspot function/program parallelization/fine grained分类
信息技术与安全科学引用本文复制引用
黄朴,刘世巍,张昊,王聪..基于申威SIMD指令的H.264编码优化[J].现代电子技术,2024,47(6):49-54,6.
