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A high performance router architecture for interconnection networks

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4 Author(s)
Duato, J. ; Valencia Univ., Spain ; Lopez, P. ; Silla, F. ; Yalamanchili, S.

We propose a new router architecture that supports wormhole switching and circuit switching concurrently. This architecture has been designed to take advantage of temporal communication locality. This can be done by establishing a circuit between nodes that are going to communicate frequently. Messages using those circuits face no contention. By combining circuit switching, pre-established physical circuits and wave pipelining across channels and switches, it is possible to increase network bandwidth considerably, also reducing latency for communications that use pre-established physical circuits. This router architecture also allows to reduce the overhead of the software messaging layer in multicomputers by offering a better hardware support. Preliminary performance evaluation results show a drastic reduction in latency and increment in throughput when messages are long enough, even if circuits are established for a single transmission and locality is not exploited

Published in:

Parallel Processing, 1996. Vol.3. Software., Proceedings of the 1996 International Conference on  (Volume:1 )

Date of Conference:

12-16 Aug 1996