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Black Art: Obstruction-Free k-set Agreement with |MWMR registers| < |proccesses|

Abstract : When n processes communicate by writing to and reading from k < n MWMR registers the "communication bandwidth" precludes emulation of SWMR system, even non-blocking. Nevertheless, recently a positive result was shown that such a system either wait-free or obstruction-free can solve an interesting one-shot task. This paper demonstrates another such result. It shows that (n − 1)-set agreement can be solved obstruction-free with merely 2 MWMR registers. Achieving k-set agreement with n − k + 1 registers is a challenge. We make the first step toward it by showing k-set agreement with 2(n − k) registers.
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Contributor : Carole Delporte-Gallet Connect in order to contact the contributor
Submitted on : Thursday, December 26, 2013 - 3:51:22 PM
Last modification on : Tuesday, November 29, 2022 - 12:06:07 PM

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Carole Delporte-Gallet, Hugues Fauconnier, Eli Gafni, Sergio Rajsbaum. Black Art: Obstruction-Free k-set Agreement with |MWMR registers| < |proccesses|. NETYS 2013 - First International Conference Networked Systems, May 2013, Marrakech, Morocco. pp.28-41, ⟨10.1007/978-3-642-40148-0_3⟩. ⟨hal-00922423⟩



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