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Strategies for dynamic load balancing on highly parallel computers

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2 Author(s)
Willebeek-LeMair, M.H. ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; Reeves, A.P.

Dynamic load balancing strategies for minimizing the execution time of single applications running in parallel on multicomputer systems are discussed. Dynamic load balancing (DLB) is essential for the efficient use of highly parallel systems when solving non-uniform problems with unpredictable load estimates. With the evolution of more highly parallel systems, centralized DLB approaches which make use of a high degree of knowledge become less feasible due to the load balancing communication overhead. Five DLB strategies are presented which illustrate the tradeoff between 1) knowledge - the accuracy of each balancing decision, and 2) overhead - the amount of added processing and communication incurred by the balancing process. All five strategies have been implemented on an Inter iPSC/2 hypercube

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Parallel and Distributed Systems, IEEE Transactions on  (Volume:4 ,  Issue: 9 )