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An absolute approximation algorithm for scheduling unrelated machines

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  • Evgeny Shchepin
  • Nodari Vakhania

Abstract

Non‐preemptive scheduling of n independent jobs on m unrelated machines so as to minimize the maximal job completion time is considered. A polynomial algorithm with the worst‐case absolute error of min{(1 − 1/m)pmax, p max′} is presented, where pmax is the largest job processing time and p max′ is the mth element from the non‐increasing list of job processing times. This is better than the earlier known best absolute error of pmax. The algorithm is based on the rounding of acyclic multiprocessor distributions. An O(nm2) algorithm for the construction of an acyclic multiprocessor distribution is also presented. © 2006 Wiley Periodicals, Inc. Naval Research Logistics, 2006

Suggested Citation

  • Evgeny Shchepin & Nodari Vakhania, 2006. "An absolute approximation algorithm for scheduling unrelated machines," Naval Research Logistics (NRL), John Wiley & Sons, vol. 53(6), pages 502-507, September.
    • Handle: RePEc:wly:navres:v:53:y:2006:i:6:p:502-507
    DOI: 10.1002/nav.20157
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    References listed on IDEAS

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