A Protocol for Deadlock-Free Dynamic Reconfiguration in High-Speed Local Area Networks
IEEE Transactions on Parallel and Distributed Systems
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HiPC '01 Proceedings of the 8th International Conference on High Performance Computing
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IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
A New Approach to Provide Real-Time Services on High-Speed Local Area Networks
IPDPS '01 Proceedings of the 15th International Parallel & Distributed Processing Symposium
Improving InfiniBand Routing through Multiple Virtual Networks
ISHPC '02 Proceedings of the 4th International Symposium on High Performance Computing
A New Communication Mechanism for Cluster Computing
Euro-Par '01 Proceedings of the 7th International Euro-Par Conference Manchester on Parallel Processing
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NOCS '11 Proceedings of the Fifth ACM/IEEE International Symposium on Networks-on-Chip
PaCT'05 Proceedings of the 8th international conference on Parallel Computing Technologies
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Most commercial routers designed for networks of workstations (NOWs) implement wormhole switching. However, wormhole switching is not well suited for NOWs. The long wires required in this environment lead to large buffers to prevent buffer overflow during flow control signaling.Moreover, wire length is limited by buffer size. Virtual cut-through (VCT) achieves a higher throughput than wormhole switching. Moreover, the traditional disadvantages of VCT switching, as buffer requirements and packetizing overhead, disappear in NOWs.In this paper, we show that VCT routers can be simpler than wormhole ones, while still achieving the advantages of using virtual channels and adaptive routing. We also propose a fully adaptive routing algorithm for VCT switching in NOWs. Moreover, we show that VCT routers outperform wormhole routers in a NOW environment at a lower cost.