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Multi-layered simulations at the heart of workflow enactment on clouds

Ostermann, S and Kecskemeti, G and Prodan, R (2015) Multi-layered simulations at the heart of workflow enactment on clouds. Concurrency Computation, 28 (11). pp. 3180-3201. ISSN 1532-0626

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Abstract

Scientific workflow systems face new challenges when supporting Cloud computing, as the information on the state of the used infrastructures is much less detailed than before. Thus, organising virtual infrastructures in a way that not only supports the workflow execution but also optimises it for several service level objectives (e.g. maximum energy consumption limit, cost, reliability, availability) become reliant on good Cloud modelling and prediction information. While simulators were successfully aiding research on such workflow management systems, the currently available Cloud related simulation toolkits suffer from several issues (e.g. scalability and narrow scope) that hinder their applicability. To address these issues, this article introduces techniques for unifying two existing simulation toolkits by first analysing the problems with the current simulators, and then by illustrating the problems faced by workflow systems. We use for this purpose the example of the ASKALON environment, a scientific workflow composition and execution tool for cloud and grid environments. We illustrate the advantages of a workflow system with directly integrated simulation back-end and how the unification of the selected simulators does not affect the overall workflow execution simulation performance. Copyright © 2015 John Wiley & Sons, Ltd.

Item Type: Article
Additional Information: This is the accepted version of the following article: Ostermann,S.,Kecskemeti,G.&Prodan, R., Multi-layered simulations at the heart of workflow enactment on clouds. Concurrency and Computation 28(11), which has been published in final form at http://dx.doi.org/10.1002/cpe.3733
Uncontrolled Keywords: 0805 Distributed Computing, 0803 Computer Software
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Q Science > QA Mathematics > QA76 Computer software
Divisions: Computer Science
Publisher: Wiley
Date Deposited: 04 Aug 2016 09:32
Last Modified: 16 Dec 2016 00:50
DOI or Identification number: 10.1002/cpe.3733
URI: http://researchonline.ljmu.ac.uk/id/eprint/3972

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