Prediction and adaptation in Active Harmony

  • Authors:
  • Jeffrey K. Hollingsworth;Peter J. Keleher

  • Affiliations:
  • Department of Computer Science, University of Maryland, College Park, MD 20742, USA;Department of Computer Science, University of Maryland, College Park, MD 20742, USA

  • Venue:
  • Cluster Computing
  • Year:
  • 1999

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Abstract

We describe the design and early functionality of the Active Harmony global resource management system. Harmony is an infrastructure designed to efficiently execute parallel applications in large-scale, dynamic environments. Harmony differs from other projects with similar goals in that the system automatically adapts ongoing computations to changing conditions through online reconfiguration. This reconfiguration can consist of system-directed migration of work at several different levels, or automatic application adaptation through the use of tuning options exported by Harmony-aware applications. We describe early experience with work migration at the level of procedures, processes and lightweight threads.