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Published June 2002 | public
Book Section - Chapter

High-density model for server allocation and placement


It is well known that optimal server placement is NP-hard. We present an approximate model for the case when both clients and servers are dense, and propose a simple server allocation and placement algorithm based on high-rate vector quantization theory. The key idea is to regard the location of a request as a random variable with probability density that is proportional to the demand at that location, and the problem of server placement as source coding, i.e., to optimally map a source value (request location) to a codeword (server location) to minimize distortion (network cost). This view has led to a joint server allocation and placement algorithm that has a time-complexity that is linear in the number of clients. Simulations are presented to illustrate its performance.

Additional Information

© 2002 ACM. We are grateful to Michelle Effros, Vangelis Markakis and Vijay V. Vazirani for helpful discussions.

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October 20, 2023