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An Integrated Scheduling Algorithm for Precedence Constrained Hard and Soft Real-Time Tasks on Heterogeneous Multiprocessors

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Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 3207))

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Abstract

In this paper, we propose a duplication-based algorithm (IDSA) for the integrated scheduling of precedence related real-time tasks with hard and soft deadlines on a set of heterogeneous multiprocessors. We employ a priority-based scheme in which the hard subtasks are always allotted a higher priority as compared to the soft subtasks. IDSA utilizes selective subtask duplication that enables some subtasks to have earlier start times, which results in an increased number of subtasks (and hence task sets) finishing before their deadlines, thereby increasing the schedulability of a real-time application. Our algorithm is also shown to be capable of scheduling a real-time application even if the available number of processors is less than the required number of processors. Based on extensive simulation results, we observe that IDSA offers better success ratio as compared to the existing algorithms in the literature when communication is a dominant factor in the system.

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Author information

Authors and Affiliations

  1. Center for Distributed and Mobile Computing, ECECS, University of Cincinnati, Cincinnati, OH, 45221-0030, USA

    Nitin Auluck & Dharma P. Agrawal

Authors
  1. Nitin Auluck
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  2. Dharma P. Agrawal
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Editor information

Editors and Affiliations

  1. Department of Computer Science, St. Francis Xavier University, Antigonish, Canada

    Laurence T. Yang

  2. Department of Computer Science and Engineering, Shanghai Jiao Tong University, 200030, Shanghai, China

    Minyi Guo

  3. University of Delaware, Newark, DE

    Guang R. Gao

  4. Department of Electrical Engineering, Princeton University, NJ 08544, Princeton, USA

    Niraj K. Jha

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© 2004 Springer-Verlag Berlin Heidelberg

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Auluck, N., Agrawal, D.P. (2004). An Integrated Scheduling Algorithm for Precedence Constrained Hard and Soft Real-Time Tasks on Heterogeneous Multiprocessors. In: Yang, L.T., Guo, M., Gao, G.R., Jha, N.K. (eds) Embedded and Ubiquitous Computing. EUC 2004. Lecture Notes in Computer Science, vol 3207. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30121-9_19

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  • DOI: https://doi.org/10.1007/978-3-540-30121-9_19

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-22906-3

  • Online ISBN: 978-3-540-30121-9

  • eBook Packages: Springer Book Archive

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