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Reliable Scientific Service Compositions

  • Bruno Wassermann
  • Wolfgang Emmerich
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4652)

Abstract

Distributed service oriented architectures (SOAs) are increasingly used by users, who are insufficiently skilled in the art of distributed system programming. A good example are computational scientists who build large-scale distributed systems using service-oriented Grid computing infrastructures. Computational scientists use these infrastructure to build scientific applications, which are composed from basic Web services into larger orchestrations using workflow languages, such as the Business Process Execution Language. For these users reliability of the infrastructure is of significant importance and that has to be provided in the presence of hardware or operational failures. The primitives available to achieve such reliability currently leave much to be desired by users who do not necessarily have a strong education in distributed system construction. We characterise scientific service compositions and the environment they operate in by introducing the notion of global scientific BPEL workflows. We outline the threats to the reliability of such workflows and discuss the limited support that available specifications and mechanisms provide to achieve reliability. Furthermore, we propose a line of research to address the identified issues by investigating autonomic mechanisms that assist computational scientists in building, executing and maintaining reliable workflows.

Keywords

Service Composition Computational Scientist Human User Business Process Execution Language Soap Message 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Bruno Wassermann
    • 1
  • Wolfgang Emmerich
    • 1
  1. 1.University College London, Dept. of Computer Science, Software Systems Engineering Group, Gower Street, London, WC1E 6BTUK

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