Abstract

We analyze a new wormhole routing scheme, which we call the wormhole deflection with virtual channels (abbreviated WDVC) scheme, that combines wormhole routing with virtual channels and deflection routing to provide efficient lossless communication. We use new analytical models to analyze the performance of the WDVC scheme for the Manhattan Street (MS) network topology. In particular, we examine the effect of the traffic load and the number of virtual channels on the throughput and the length of paths followed by the worms, and compare the analytical results obtained with corresponding simulation results. Our results indicate that wormhole deflections combined with virtual channels is efficient under both light and heavy traffic loads, especially when the number of virtual channels on a link is large.

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