Convergence time to Nash equilibria

  • Authors:
  • Eyal Even-Dar;Alex Kesselman;Yishay Mansour

  • Affiliations:
  • School of Computer Science, Tel-Aviv University;School of Computer Science, Tel-Aviv University;School of Computer Science, Tel-Aviv University

  • Venue:
  • ICALP'03 Proceedings of the 30th international conference on Automata, languages and programming
  • Year:
  • 2003

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Abstract

We study the number of steps required to reach a pure Nash Equilibrium in a load balancing scenario where each job behaves selfishly and attempts to migrate to a machine which will minimize its cost. We consider a variety of load balancing models, including identical, restricted, related and unrelated machines. Our results have a crucial dependence on the weights assigned to jobs. We consider arbitrary weights, integer weights, K distinct weights and identical (unit) weights. We look both at an arbitrary schedule (where the only restriction is that a job migrates to a machine which lowers its cost) and specific efficient schedulers (such as allowing the largest weight job to move first).