Home // International Journal On Advances in Networks and Services, volume 2, number 1, 2009 // View article
Authors:
Qimin Yang
Keywords: Packet Switch, Interconnection Network, Optical Network, Data Vortex, Deflection.
Abstract:
Extended performance evaluation is carried out on Data Vortex optical interconnection networks with different routing and forwarding path arrangements [1]. A modified Data Vortex network architecture based on general k-ary decoding routing at each node has been proposed and different cases are compared in search for the optimum layout. For bufferless implementation, the original Data Vortex networks based on binary decoding stages are shown to achieve the best combined routing performance in throughput and latency. We specifically focus on the performance comparison between the binary decoding (k=2) and 4-ary decoding (k=4) cases to illustrate the different network behaviors. The results provide insight to how the different routing and forwarding path arrangements affect the overall network performance in throughput and latency. The binary Data Vortex networks outperform 4-ary networks even though a much smaller number of cylinder levels are required in a 4-ary network. There is only slight reduction in the average packet latency within the 4-ary network, while its deflection induced traffic backpressure under bufferless operation could greatly limit the throughput and make it less desirable. Future work may include such performance evaluation when extra buffering is available at routing nodes.
Pages: 1 to 12
Copyright: Copyright (c) to authors, 2009. Used with permission.
Publication date: June 7, 2009
Published in: journal
ISSN: 1942-2644