کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
461116 696556 2013 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scheduling of scientific workflow in non-dedicated heterogeneous multicluster platform
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Scheduling of scientific workflow in non-dedicated heterogeneous multicluster platform
چکیده انگلیسی

Many scientific workflows can be structured as Parallel Task Graphs (PTGs), that is, graphs of data-parallel tasks. Adding data parallelism to a workflow provides opportunities for higher performance and scalability. Workflow tasks are data-parallel and moldable, and clusters are not only heterogeneous but also non-dedicated for workflow execution. Therefore, scheduling such scientific workflow in a multicluster platform becomes a challenging task. To address this problem, we study the scheduling of scientific workflow in a non-dedicated heterogeneous multicluster platform aimed at minimizing the makespan for workflow execution. In this paper, three scheduling algorithms for effective workflow task mapping and resource allocation are proposed, among them MHEFT-RSV and MHEFT-RSV-BD are heuristic algorithms. An exact branch-and-cut scheduling algorithm is implemented, which exploits the intertask precedence and resource constraints thereby accelerating the process of obtaining a feasible schedule with minimized makespan. Detailed simulation experiments show that on average the exact branch-and-cut algorithm obtains shorter makespan for small and medium size workflows, while MHEFT-RSV and MHEFT-RSV-BD achieves better tradeoff between makespan and computation time for large scientific workflows.


► Formulation of workflow scheduling in non-dedicated multicluster platform with an integer programming model.
► Optimization of the model by reduction of variables via constraint propagation.
► Development of two heuristic algorithms: MHEFT-RSV and MHEFT-RSV-BD.
► Implementation of a novel branch-and-cut algorithm.
► Performance comparisons between MHEFT-RSV, MHEFT-RSV-BD and branch-and-cut.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Systems and Software - Volume 86, Issue 7, July 2013, Pages 1806–1818
نویسندگان
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