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Taming Heterogeneity - The Ptolemy Approach (2003)
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BibTeX
@MISC{Eker03tamingheterogeneity,
author = {Johan Eker and Jörn W. Janneck and Edward A. Lee and Jie Liu and Xiaojun Liu and Jozsef Ludvig and Stephen Neuendorffer and Sonia Sachs and Yuhong Xiong},
title = {Taming Heterogeneity - The Ptolemy Approach},
year = {2003}
}
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Abstract
Modern embedded computing systems tend to be heterogeneous in the sense of being composed of subsystems with very different characteristics, which communicate and interact in a variety of ways---synchronous or asynchronous, buffered or unbuffered, etc. Obviously, when designing such systems, a modeling language needs to reflect this heterogeneity. Today's modeling environments usually offer a variant of what we call amorphous heterogeneity to address this problem. This paper argues that modeling systems in this manner leads to unexpected and hard-to-analyze interactions between the communication mechanisms and proposes a more structured approach to heterogeneity, called hierarchical heterogeneity to solve this problem. It proposes a model structure and semantic framework that support this form of heterogeneity, and discusses the issues arising from heterogeneous component interaction and the desire for component reuse. It introduces the notion of domain polymorphism as a way to address these issues.
Keyphrases
ptolemy approach modeling language need domain polymorphism hard-to-analyze interaction different characteristic hierarchical heterogeneity structured approach heterogeneous component interaction semantic framework amorphous heterogeneity component reuse model structure communication mechanism
