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Design and Implementation of Multi-core Support for an Embedded Real-time Operating System for Space Applications

Zhang, Wei (2015) Design and Implementation of Multi-core Support for an Embedded Real-time Operating System for Space Applications. Master's, KTH Royal Institute of Technology.

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Abstract

Nowadays, multi-core processors are widely used in embedded applications due to the advantages of higher performance and lower power consumption. However, the complexity of multi-core architectures makes it a considerably challenging task to extend a single-core version of a real-time operating system to support multi-core platform. This thesis documents the process of design and implementation of a multi-core version of RODOS - an embedded real-time operating system developed by German Aerospace Center and the University of Würzburg - on a dual-core platform. Two possible models are proposed: Symmetric Multiprocessing and Asymmetric Multi- processing. In order to prevent the collision of the global components initialization, a new multi-core boot loader is created to allow that each core boots up in a proper manner. A working version of multi-core RODOS is implemented that has an ability to run tasks on a multi-core platform. Several test cases are applied and verified that the performance on the multi-core version of RODOS achieves around 180% improved than the same tasks running on the original RODOS. Deadlock free communication and synchronization APIs are provided to let parallel applications share data and messages in a safe manner.

Item URL in elib:https://elib.dlr.de/96449/
Document Type:Thesis (Master's)
Title:Design and Implementation of Multi-core Support for an Embedded Real-time Operating System for Space Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhang, WeiKTH Royal Institute of TechnologyUNSPECIFIED
Date:27 May 2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:87
Status:Published
Keywords:real-time operating system, multi-core architecture, embedded system
Institution:KTH Royal Institute of Technology
Department:Information and Communication Technology
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Projekt OBC-NG
Location: Braunschweig
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Deposited By: Peng, Ting
Deposited On:04 Jun 2015 16:01
Last Modified:31 Jul 2019 19:53

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