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Lower Bounds for Shared-Memory Leader Election Under Bounded Write Contention

Authors Dan Alistarh, Rati Gelashvili, Giorgi Nadiradze



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Author Details

Dan Alistarh
  • IST Austria, Klosterneuburg, Austria
Rati Gelashvili
  • Novi Research, Menlo Park, CA, USA
Giorgi Nadiradze
  • IST Austria, Klosterneuburg, Austria

Acknowledgements

The authors would like to thank the DISC anonymous reviewers for their useful feedback and comments.

Cite AsGet BibTex

Dan Alistarh, Rati Gelashvili, and Giorgi Nadiradze. Lower Bounds for Shared-Memory Leader Election Under Bounded Write Contention. In 35th International Symposium on Distributed Computing (DISC 2021). Leibniz International Proceedings in Informatics (LIPIcs), Volume 209, pp. 4:1-4:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)
https://doi.org/10.4230/LIPIcs.DISC.2021.4

Abstract

This paper gives tight logarithmic lower bounds on the solo step complexity of leader election in an asynchronous shared-memory model with single-writer multi-reader (SWMR) registers, for both deterministic and randomized obstruction-free algorithms. The approach extends to lower bounds for deterministic and randomized obstruction-free algorithms using multi-writer registers under bounded write concurrency, showing a trade-off between the solo step complexity of a leader election algorithm, and the worst-case number of stalls incurred by a processor in an execution.

Subject Classification

ACM Subject Classification
  • Theory of computation → Concurrency
Keywords
  • Lower Bounds
  • Leader Election
  • Shared-Memory

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