Performance modelling and evaluation of virtual channels in multicomputer networks with bursty traffic

Geyong Min*, Mohamed Ould-Khaoua

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Traffic loads generated by many parallel applications can exhibit strong burstiness, which may significantly affect the performance of interconnection networks supporting communication among individual processors. As a step towards obtaining a deeper understanding of network performance under various traffic conditions, this paper develops an analytical model for pipelined circuit-switched k-ary n-cubes augmented with virtual channels support in the presence of bursty traffic by extending the application of the well-known Markov-modulated Poisson process (MMPP) to queuing networks. The model is then used to investigate the performance implications of using virtual channels when the network is subjected to bursty traffic. The results reveal the importance of virtual channel flow control for reducing the degrading effects of bursty traffic on network performance. Our analysis also shows that when the number of virtual channels reaches a certain threshold, adding more virtual channels does not lead to considerable performance gains.

Original languageEnglish
Pages (from-to)143-162
Number of pages20
JournalPerformance Evaluation
Issue number2-3
Publication statusPublished - Nov 2004
Externally publishedYes


  • Bursty traffic
  • Interconnection networks
  • Message latency
  • Multicomputers
  • Performance modelling and analysis
  • Pipelined circuit switching

ASJC Scopus subject areas

  • Software
  • Modelling and Simulation
  • Hardware and Architecture
  • Computer Networks and Communications


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