Peter Aronsson

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Modelica is a modern, strongly typed, declarative, and object-oriented language for modeling and simulation of complex systems. This paper gives a quick overview of some aspects of the OpenModelica environment – an open-source environment for modeling, simulation, and development of Modelica applications. An introduction of the objectives of the environment(More)
Modelica is a modern, strongly typed, declarative, and object-oriented language for modeling and simulation of complex systems. This paper gives a quick overview of some aspects of the OpenModelica environment - an open-source environment for modeling, simulation, and development of Modelica applications. An introduction of the objectives of the environment(More)
This paper presents improvements on techniques of merging tasks in task graphs generated in the ModPar automatic parallelization module of the OpenModelica compiler. Automatic parallelization is performed on Modelica models by building data dependency graphs called task graphs from the model equations. To handle large task graphs with fine granularity, i.e.(More)
Modelica is a modern, strongly typed, declarative, equation-based, and object-oriented language for modeling and simulation of complex systems. Major features are: ease of use, visual design of models with combination of lego-like predefined model building blocks, ability to define model libraries with reusable components, support for modeling and(More)
This paper describes a new solution method applied to the problem initializing DAEs using the Modelica lan-guage. Modelica is primarily an object-oriented equa-tion-based modeling language that allows specification of mathematical models of complex natural or man-made systems. Major features of Modelica are the mul-tidomain modeling capability and the(More)
In this paper we report on a long-term research effort to develop and use efficient language implementation generators in practice. The generator is applied to a number of different languages, some of which are used for projects in industry. The used formal specification style is Operational Semantics, primarily in the form called Natural Semantics,(More)
The OpenModelica framework is an Open Source effort for building a complete compiler for Modelica started at the programming environments laboratory at Linköping university. It is written in a language called RML [10], Relational Meta Language, based on natural semantics. Natural semantics is a popular formalism for describing the semantics (i.e. the(More)