A Scheduling Algorithm for Defeating Collusion

Louis-Claude Canon 1 Emmanuel Jeannot 1 Jon Weissman 2
1 RUNTIME - Efficient runtime systems for parallel architectures
Inria Bordeaux - Sud-Ouest, UB - Université de Bordeaux, CNRS - Centre National de la Recherche Scientifique : UMR5800
Abstract : By exploiting idle time on volunteer machines, desktop grids provide a way to execute large sets of tasks with negligible maintenance and low cost. Although desktop grids are attractive for cost-conscious projects, relying on external resources may compromise the correctness of application execution due to the well-known unreliability of nodes. In this paper, we consider the most challenging threat model: organized groups of cheaters that may collude to produce incorrect results. By using a previously described on-line algorithm for detecting collusion and characterizing the participant behaviors, we propose a scheduling algorithm that tackles collusion. Using several real-life traces, we show that our approach min- imizes redundancy while maximizing the number of correctly certified results.
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[Research Report] RR-7403, INRIA. 2010
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Louis-Claude Canon, Emmanuel Jeannot, Jon Weissman. A Scheduling Algorithm for Defeating Collusion. [Research Report] RR-7403, INRIA. 2010. 〈inria-00524493〉

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