Conventional and Multirecombinative Evolutionary Algorithms for the Parallel Task Scheduling Problem

  • Authors:
  • Susana C. Esquivel;Claudia Gatica;Raúl Héctor Gallard

  • Affiliations:
  • -;-;-

  • Venue:
  • Proceedings of the EvoWorkshops on Applications of Evolutionary Computing
  • Year:
  • 2001

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Abstract

The present work deals with the problem of allocating a number of non identical tasks in a parallel system. The model assumes that the system consists of a number of identical processors and that only one task may be executed on a processor at a time. All schedules and tasks are nonpreemptive. Graham's [1] well-known list scheduling algorithm (LSA) is contrasted with different evolutionary algorithms (EAs), which differ on the representations and the recombinative approach used. Regarding representation, direct and indirect representation of schedules are used. Concerning recombination, the conventional single crossover per couple (SCPC) and a multiple crossover per couple (MCPC) are used [2]. Outstanding behaviour of evolutionary algorithms when contrasted against LSA was detected. Results are shown and discussed.