Brief Announcement: Local Problems in the SUPPORTED Model

Akanksha Agrawal, John Augustine, David Peleg, Srikkanth Ramachandran

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We study the SUPPORTED model of distributed computing introduced by Schmid and Suomela [15], generalizing the LOCAL and CONGEST models. In this framework, multiple instances of the same problem, differing from each other by some problem specific input, recur over time, and need to be solved efficiently online. To do that, one may rely on an initial preprocessing phase for computing some useful information. This preprocessing phase makes it possible, in some cases, to obtain improved distributed algorithms, overcoming locality-based time lower bounds.We propose some natural recurrent variants of the dominating set problem and the coloring problem that are of interest particularly in the distributed setting. For these problems, we show that information about the topology can be used to overcome locality-based lower bounds. We also categorize the round complexity of Locally Checkable Labellings in the SUPPORTED model for the simple case of paths. Finally we present some interesting open problems and some partial results towards resolving them.

Original languageEnglish
Title of host publicationPODC 2023 - Proceedings of the 2023 ACM Symposium on Principles of Distributed Computing
PublisherAssociation for Computing Machinery
Pages172-175
Number of pages4
ISBN (Electronic)9798400701214
DOIs
StatePublished - 19 Jun 2023
Externally publishedYes
Event42nd ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing, PODC 2023 - Orlando, United States
Duration: 19 Jun 202323 Jun 2023

Publication series

NameProceedings of the Annual ACM Symposium on Principles of Distributed Computing

Conference

Conference42nd ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing, PODC 2023
Country/TerritoryUnited States
CityOrlando
Period19/06/2323/06/23

Bibliographical note

Publisher Copyright:
© 2023 ACM.

Funding

David Peleg holds the Venky Harinarayanan and Anand Rajara-man (VHAR) Visiting Chair Professorship at IIT Madras. This work was carried out in part during mutual visits that were supported by the VHAR Visiting Chair funds. John Augustine and Srikkanth Ramachandran are supported by the Centre of Excellence in Cryptography, Cybersecurity, and Distributed Trust (CCD) and by an IITM-Accenture project (SB/22-23/007/JOHN/ACC).

FundersFunder number
Centre of Excellence in Cryptography
Distributed Trust
IITM-AccentureSB/22-23/007/JOHN/ACC
ARC Centre of Excellence in Cognition and its Disorders

    Keywords

    • LOCAL Model
    • SUPPORTED Model
    • distributed algorithms

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