TY - GEN

T1 - Distributed agreement with optimal communication complexity

AU - Gilbert, Seth

AU - Kowalski, Dariusz R.

PY - 2010/5/6

Y1 - 2010/5/6

N2 - We consider the problem of fault-tolerant agreement in a crash-prone synchronous system. We present a new randomized consensus algorithm that achieves optimal communication efficiency, using only O(n) bits of communication, and terminates in (almost optimal) time O(log n), with high probability. The same protocol, with minor modifications, can also be used in partially synchronous networks, guaranteeing correct behavior even in asynchronous executions, while maintaining efficient performance in synchronous executions. Finally, the same techniques also yield a randomized, fault-tolerant gossip protocol that terminates in O(log* n) rounds using O(n) messages (with bit complexity that depends on the data being gossiped).

AB - We consider the problem of fault-tolerant agreement in a crash-prone synchronous system. We present a new randomized consensus algorithm that achieves optimal communication efficiency, using only O(n) bits of communication, and terminates in (almost optimal) time O(log n), with high probability. The same protocol, with minor modifications, can also be used in partially synchronous networks, guaranteeing correct behavior even in asynchronous executions, while maintaining efficient performance in synchronous executions. Finally, the same techniques also yield a randomized, fault-tolerant gossip protocol that terminates in O(log* n) rounds using O(n) messages (with bit complexity that depends on the data being gossiped).

UR - http://www.scopus.com/inward/record.url?scp=77951676609&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951676609&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:77951676609

SN - 9780898717013

T3 - Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms

SP - 965

EP - 977

BT - Proceedings of the 21st Annual ACM-SIAM Symposium on Discrete Algorithms

T2 - 21st Annual ACM-SIAM Symposium on Discrete Algorithms

Y2 - 17 January 2010 through 19 January 2010

ER -