Scheduling with Interjob Communication on Parallel Processors

  • Jürgen König
  • Alexander Mäcker
  • Friedhelm Meyer auf der Heide
  • Sören RiechersEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10043)


Consider a scheduling problem in which a set of jobs with interjob communication, canonically represented by a weighted tree, needs to be scheduled on m parallel processors interconnected by a shared communication channel. In each time step, we may allow any processed job to use a certain capacity of the channel in order to satisfy (parts of) its communication demands to adjacent jobs processed in parallel. The goal is to find a schedule with minimum length in which communication demands of all jobs are satisfied.

We show that this problem is NP-hard in the strong sense even if the number of processors and the maximum degree of the underlying tree is constant. Consequently, we design and analyze simple approximation algorithms with asymptotic approximation ratio Open image in new window in case of paths and a ratio of Open image in new window in case of arbitrary trees.


Schedule Problem Capacity Constraint Dependency Graph Approximation Factor Parallel Processor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  • Jürgen König
    • 1
  • Alexander Mäcker
    • 1
  • Friedhelm Meyer auf der Heide
    • 1
  • Sören Riechers
    • 1
    Email author
  1. 1.Heinz Nixdorf Institute and Computer Science DepartmentPaderborn UniversityPaderbornGermany

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