Abstract
Existing local iterative algorithms for load-balancing are ill-suited to many large-scale interconnection networks. The main reasons are complicated Laplace spectrum computations and flow scheduling strategies. Many large-scale networks are modular and/or hierarchically structured, a prime example being the class of swapped or OTIS networks that have received much attention in recent years. We propose a new local scheme, called DED-X, for load-balancing on homogeneous and heterogeneous swapped/OTIS networks. Our scheme needs spectral information only for the much smaller basis or factor graph, which is of size O ( n ) rather than O ( n 2 ) , and it schedules load flow on intragroup and intergroup links separately. We justify the improvements offered by DED-X schemes over traditional X schemes analytically and verify the advantages of our approach, in terms of efficiency and stability, via simulation.
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