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    Scheduling in a dynamic heterogeneous distributed system using estimation error


    Page, Andrew J. and Keane, Thomas M. and Naughton, Thomas J. (2008) Scheduling in a dynamic heterogeneous distributed system using estimation error. Journal of Parallel and Distributed Computing, 68 (11). pp. 1452-1462. ISSN 0743-7315

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    Abstract

    In real-world dynamic heterogeneous distributed systems, allocating tasks to processors can be an inefficient process, due to the dynamic nature of the resources, and the tasks to be processed. The information about these tasks and resources is not known a priori, and thus must be estimated online.We utilize the accuracy of these estimates, and when combined with different objectives, such as minimizing makespan and evenly distributing load, naturally gives rise to a family of four different scheduling algorithms. The algorithms have been implemented on a real-world heterogeneous distributed system with up to 90 processors. A set of real-world problems from the areas of cryptography, bioinformatics, and biomedical engineering were used as a test-set to measure the effectiveness of the scheduling algorithms. We have found that considering estimation error when allocating tasks to processors can provide more efficient solutions, than when estimation error is not considered. We have found that using a simple heuristic, combined with estimation error, can in some cases provide solutions approaching the efficiency of complicated well-known evolutionary algorithms.

    Item Type: Article
    Keywords: Scheduling; Error estimation; Heterogeneous; Distributed computing;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 8633
    Identification Number: https://doi.org/10.1016/j.jpdc.2008.07.004
    Depositing User: Thomas Naughton
    Date Deposited: 18 Aug 2017 14:53
    Journal or Publication Title: Journal of Parallel and Distributed Computing
    Publisher: Elsevier
    Refereed: Yes
    Funders: Irish Research Council for Science Engineering and Technology (IRCSET), European Commission Marie Curie Intra-European Individual Fellowship
    URI:

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