以異質雙核心嵌入式系統實現H.264編碼器的任務動態分配管理

DYNAMIC TASKS DISPATCHING MANAGEMENT FOR H.264 ENCODER ON HETEROGENEOUS DUAL-CORE EMBEDDED SYSTEM

陳彥霖(Yen-Lin Chen)

指導教授 ： 曾嘉影

大同大學/電機資訊學院/資訊工程學系所/碩士(2010年)

摘要

本論文論述如何使用雙核心嵌入式系統來處理多媒體資料，並說明在處理資料過程中系統資源的管理。現今在非對稱多核心系統上的資料分割大多是在compile的時候採用軟體分割，也就是單純把資料分派給RISC或是DSP核心，而讓另外未分配到資料的核心處於空閒狀態。如果我們能同時使用全部的核心個別處理部份的資料，則整個處理速度將會提升、消耗電力也會減少。在此論文中我們提出了一個動態的資料分配系統，來管理及排程RISC與DSP核心的處理程序並將資料分配給兩個核心。我們使用TI的達文西DM6446嵌入式實驗板做為範例並提供速度提升效果的數據。

關鍵字

H.264 ； 雙核心 ； 動態

並列摘要

This paper shows the mechanism of using a dual-core embedded system to process the multimedia data and how the resources managed to serve the whole process. The partitioning methodologies now for asymmetric dual-core systems typically perform software partitioning during compile time, which assigns tasks simply to RISC (Reduced Instruction Set Computer) or DSP (Digital Signal Processor) only, leaving the other processor idle. If we can use both processors to handle part of the job, the whole process will be faster and save a lot of time and power. In this paper we proposed a dynamic dispatching method to manage and schedule the tasks between RISC and DSP. We dispatch the tasks to both RISC and DSP core. We use TI’s DaVinci DM6446 as our example to show the enhancement of system performance. The paper also indicates the experiment results and the further issues to promote.

並列關鍵字

H.264 ； DUAL-CORE ； Dynamic

參考文獻

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[4] Ming-Yu Hung, Bo-Syun. Hsu, Yung-Chia Lin and Jenq-Kuen Lee, “MDI: An Annotation Language for Heterogeneous DSP Processors”, National Tsing Hua University.

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[9] Cheng-Nan Chiu, “H.264 Video Encoding Optimization on Dual-Core Platform”, National Chiao Tung University, June 2005.