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July 2008

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2008-07: The MeDUSA Reference Manual, Second Edition
by Peter Schneider-Kamp 14 Jul '08

14 Jul '08

The following technical report is available from http://aib.informatik.rwth-aachen.de: The MeDUSA Reference Manual, Second Edition Alexander Nyßen, Horst Lichter AIB 2008-07 MeDUSA (Method for UML2-based Construction of Embedded & Real-Time Software) is a model-based software construction method targeting the domain of small embedded & real-time software. MeDUSA was developed by the Research Group Software Construction of the RWTH Aachen University in close cooperation with the German ABB Corporate Research Centre. It incorporates various practical experiences gained during the industrial development of embedded software in ABB Business Unit Instrumentation. Being Use Case-driven, MeDUSA systematically covers the software construction lifecycle phase from the early requirements up to implementation. Models are successively developed and employed throughout all activities. By enforcing a class-based rather than an object-oriented design, a smooth transition of the resulting design model towards an implementation in a procedural programming language is facilitated. This is essential, as procedural programming languages as the C language are still state-of-the-art in the domain of small embedded & real-time software.

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2008-16: Comparing recent network simulators: A performance evaluation study
by Peter Schneider-Kamp 07 Jul '08

07 Jul '08

The following technical report is available from http://aib.informatik.rwth-aachen.de: Comparing recent network simulators: A performance evaluation study Hendrik vom Lehn, Elias Weingärtner and Klaus Wehrle AIB 2008-16 Ranging from the development of new protocols to validating analytical performance metrics, network simulation is the most prevalent methodology in the field of computer network research. While the well known ns-2 toolkit has established itself as the quasi standard for network simulation, the successors are on their way. In this paper, we first survey recent contributions in the field of network simulation tools as well as related aspects such as parallel network simulation. Moreover, we present preliminary results which compare the resource demands for ns-3, JiST, SimPy and OMNeT++ by implementing the identical simulation scenario in all these simulation tools.

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