SETI@home: an experiment in public-resource computing
Communications of the ACM
Grid-Based Monte Carlo Application
GRID '02 Proceedings of the Third International Workshop on Grid Computing
IPDPS '05 Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Workshop 1 - Volume 02
Jalapeno: secentralized grid computing using peer-to-peer technology
Proceedings of the 2nd conference on Computing frontiers
Trust but verify: monitoring remotely executing programs for progress and correctness
Proceedings of the tenth ACM SIGPLAN symposium on Principles and practice of parallel programming
Future Generation Computer Systems - Special issue: P2P computing and interaction with grids
Sabotage-tolerance and trust management in desktop grid computing
Future Generation Computer Systems
Ridge: combining reliability and performance in open grid platforms
Proceedings of the 16th international symposium on High performance distributed computing
Adaptive Reputation-Based Scheduling on Unreliable Distributed Infrastructures
IEEE Transactions on Parallel and Distributed Systems
Data and code integrity in Grid environments
SMO'06 Proceedings of the 6th WSEAS International Conference on Simulation, Modelling and Optimization
An adaptive and trustworthy software testing framework on the grid
The Journal of Supercomputing
Efficient allocation and composition of distributed storage
The Journal of Supercomputing
Collusion Detection for Grid Computing
CCGRID '09 Proceedings of the 2009 9th IEEE/ACM International Symposium on Cluster Computing and the Grid
Runtime Monitoring and Dynamic Reconfiguration for Intrusion Detection Systems
RAID '09 Proceedings of the 12th International Symposium on Recent Advances in Intrusion Detection
Crowd translator: on building localized speech recognizers through micropayments
ACM SIGOPS Operating Systems Review
Lightweight monitoring of the progress of remotely executing computations
LCPC'05 Proceedings of the 18th international conference on Languages and Compilers for Parallel Computing
Characterizing result errors in internet desktop grids
Euro-Par'07 Proceedings of the 13th international Euro-Par conference on Parallel Processing
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In this paper, we address the new problem of protecting volunteer computing systems from malicious volunteers who submit erroneous results by presenting sabotage-tolerance mechanisms that work without depending on checksums or cryptographic techniques. We first analyze the traditional technique of voting, and show how it reduces error rates exponentially with redundancy, but requires all work to be done at least twice, and does not work well when there are many saboteurs. We then present a new technique called spot-checking which reduces the error rate linearly (i.e., inversely) with the amount of work to be done, while only costing an extra fraction of the original time. We then integrate these mechanisms by presenting the new idea of credibility-based fault-tolerance, which uses probability estimates to efficiently limit and direct the use of redundancy. By using voting and spot-checking together, credibility-based fault-tolerance effectively allows us to exponentially shrink an already linearly-reduced error rate, and thus achieve error rates that are orders-of-magnitude smaller than those offered by voting or spot-checking alone. We validate this new idea with Monte Carlo simulations, and discuss how credibility-based fault tolerance can be used with other mechanisms and in other applications.