Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH Schloss Dagstuhl - Leibniz-Zentrum für Informatik GmbH scholarly article en Eghbali, Aryaz; Woelfel, Philipp https://www.dagstuhl.de/lipics License: Creative Commons Attribution 3.0 Unported license (CC-BY 3.0)
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URN: urn:nbn:de:0030-drops-98103
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An Almost Tight RMR Lower Bound for Abortable Test-And-Set

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Abstract

We prove a lower bound of Omega(log n/log log n) for the remote memory reference (RMR) complexity of abortable test-and-set (leader election) in the cache-coherent (CC) and the distributed shared memory (DSM) model. This separates the complexities of abortable and non-abortable test-and-set, as the latter has constant RMR complexity [Wojciech Golab et al., 2010].
Golab, Hendler, Hadzilacos and Woelfel [Wojciech M. Golab et al., 2012] showed that compare-and-swap can be implemented from registers and test-and-set objects with constant RMR complexity. We observe that a small modification to that implementation is abortable, provided that the used test-and-set objects are atomic (or abortable). As a consequence, using existing efficient randomized wait-free implementations of test-and-set [George Giakkoupis and Philipp Woelfel, 2012], we obtain randomized abortable compare-and-swap objects with almost constant (O(log^* n)) RMR complexity.

BibTeX - Entry

@InProceedings{eghbali_et_al:LIPIcs:2018:9810,
  author =	{Aryaz Eghbali and Philipp Woelfel},
  title =	{{An Almost Tight RMR Lower Bound for Abortable Test-And-Set}},
  booktitle =	{32nd International Symposium on Distributed Computing  (DISC 2018)},
  pages =	{21:1--21:19},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-092-7},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{121},
  editor =	{Ulrich Schmid and Josef Widder},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2018/9810},
  URN =		{urn:nbn:de:0030-drops-98103},
  doi =		{10.4230/LIPIcs.DISC.2018.21},
  annote =	{Keywords: Abortability, Test-And-Set, Leader Election, Compare-and-Swap, RMR Complexity, Lower Bound}
}

Keywords: Abortability, Test-And-Set, Leader Election, Compare-and-Swap, RMR Complexity, Lower Bound
Seminar: 32nd International Symposium on Distributed Computing (DISC 2018)
Issue date: 2018
Date of publication: 04.10.2018


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