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37th Annual IEEE Conference on Local Computer Networks (2012)
Clearwater Beach, FL, USA USA
Oct. 22, 2012 to Oct. 25, 2012
ISSN: 0742-1303
ISBN: 978-1-4673-1565-4
pp: 296-299
Thuan Duong-Ba , School of EECS, Oregon State University, Corvallis, 97330, USA
Thinh Nguyen , School of EECS, Oregon State University, Corvallis, 97330, USA
For many Internet systems, clients (users) interact with each other indirectly via intermediate servers. In such systems, it is crucial to assign users to servers based on the interaction patterns among the users, in such a way to reduce communication costs and to balance loads among the servers. Finding the optimal client-server assignment has been previously shown to be NP-complete, and approximate centralized solutions have been proposed. In this paper, we present a distributed scheme for finding an approximately optimal client-server assignment in which the servers exchange and update information about their loads iteratively among themselves. Based on these, they make decisions to reassign their users to others iteratively so that final client-server assignment is approximately optimal. Theoretical results on the convergence rate and complexity of the proposed algorithm are presented. Simulations results show the effectiveness of the proposed algorithm for different patterns of user interactions.
Servers, Silicon, Linear programming, Approximation algorithms, Heuristic algorithms, Partitioning algorithms, Distributed algorithms, large scale application, Distributed optimization, distributed graph partitioning

T. Duong-Ba and T. Nguyen, "Distributed client-server assignment," 37th Annual IEEE Conference on Local Computer Networks(LCN), Clearwater Beach, FL, USA USA, 2012, pp. 296-299.
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