Exceptions for Algorithmic Skeletons
- Cite this paper as:
- Leyton M., Henrio L., Piquer J.M. (2010) Exceptions for Algorithmic Skeletons. In: D’Ambra P., Guarracino M., Talia D. (eds) Euro-Par 2010 - Parallel Processing. Euro-Par 2010. Lecture Notes in Computer Science, vol 6272. Springer, Berlin, Heidelberg
Algorithmic skeletons offer high-level abstractions for parallel programming based on recurrent parallelism patterns. Patterns can be combined and nested into more complex parallelism behaviors. Programmers fill the skeleton patterns with the functional (business) code, which transforms the generic skeleton into a specific application. However, when the functional code generates exceptions, programmers are exposed to implementation details of the skeleton library, breaking the high-level abstraction principle. Furthermore, related parallel activities must be stopped as the exception is raised. This paper describes how to handle exceptions in algorithmic skeletons without breaking the high-level abstractions of the programming model. We describe both the behavior of the framework in a formal way, and its implementation in Java: the Skandium Library.
KeywordsAlgorithmic skeletons exceptions semantics
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