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Automatic Co-scheduling Based on Main Memory Bandwidth Usage

  • Jens Breitbart
  • Josef Weidendorfer
  • Carsten Trinitis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10353)

Abstract

Most applications running on supercomputers achieve only a fraction of a system’s peak performance. It has been demonstrated that co-scheduling applications can improve overall system utilization. In this case, however, applications being co-scheduled need to fulfill certain criteria such that mutual slowdown is kept at a minimum. In this paper we present a set of libraries and a first HPC scheduler prototype that automatically detects an application’s main memory bandwidth utilization and prevents the co-scheduling of multiple main memory bandwidth limited applications. We demonstrate that our prototype achieves almost the same performance as we achieved with manually tuned co-schedules in previous work.

Notes

Acknowledgments

We want to thank MEGWARE, who provided us with a Clustsafe to measure energy consumption. The work presented in this paper was funded by the German Ministry of Education and Science as part of the FAST project (funding code 01IH11007A).

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Jens Breitbart
    • 1
  • Josef Weidendorfer
    • 1
  • Carsten Trinitis
    • 1
  1. 1.Department of Informatics, Chair for Computer ArchitectureTechnical University MunichMunichGermany

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