The switching scheme of a point-to-point network determines how packets flow through each node, and is a primary element in determining the network's performance. In this paper, we present and evaluate a new switching scheme called hybrid switching. Hybrid switching dynamically combines both virtual cut-through and wormhole switching to provide higher achievable throughput than wormhole alone, while significantly reducing the buffer space required at intermediate nodes when compared to virtual cut-through. This scheme is motivated by a comparison of virtual cut-through and wormhole switching through cycle-level simulations, and then evaluated using the same methods. To show the feasibility of hybrid switching, as well as to provide a common base for simulating and implementing a variety of switching schemes, we have designed SPIDER, a communication adapter built around a custom ASIC, the Programmable Routing Controller (PRC).
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Analysis and implementation of hybrid switching
Shin, Kang G.; Daniel, Stuart W.
Follow ACM SIGARCH Computer Architecture News
, Volume 23 (2)
Association for Computing Machinery – May 1, 1995
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