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Journal of the ACM (JACM)
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Self-Stabilizing Smoothing and Counting
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Sorting networks and their applications
AFIPS '68 (Spring) Proceedings of the April 30--May 2, 1968, spring joint computer conference
The impact of randomization in smoothing networks
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Near-perfect load balancing by randomized rounding
Proceedings of the forty-first annual ACM symposium on Theory of computing
Smoothed Analysis of Balancing Networks
ICALP '09 Proceedings of the 36th Internatilonal Collogquium on Automata, Languages and Programming: Part II
A randomized, o(log w)-depth 2 smoothing network
Proceedings of the twenty-first annual symposium on Parallelism in algorithms and architectures
Theoretical Computer Science
Parallel rotor walks on finite graphs and applications in discrete load balancing
Proceedings of the twenty-fifth annual ACM symposium on Parallelism in algorithms and architectures
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A smoothing network is a distributed data structure that accepts tokens on input wires and routes them to output wires. It ensures that however imbalanced the traffic on input wires, the numbers of tokens emitted on output wires are approximately balanced. We study randomized smoothing networks, whose initial states are chosen at random. Randomized smoothing networks require no global initialization, and also require no global reconfiguration after faults. We show that the randomized version of the well-known block smoothing network is 2.36log(w)-smooth with high probability, where w is the number of input or output wires. As a direct consequence, we prove that the randomized bitonic and periodic networks are also O(log(w))-smooth with high probability. In contrast, it is known that these networks are (logw)-smooth in the worst case.