Hypercube Communication Delay with Wormhole Routing

Jong Kim, Chita R. Das

Research output: Contribution to journalArticlepeer-review

97 Scopus citations


We present an analytical model for the performance evaluation of hypercube computers. This analysis is aimed at modeling a deadlock-free wormhole routing scheme prevalent on second generation hypercube systems. Probability of blocking and average message delay are the two performance measures discussed here. We start with the communication traffic to find the probability of blocking. The traffic analysis can capture any message destination distribution. Next, we find the average message delay that consists of two parts. The first part is the actual message transfer delay between any source and destination nodes. The second part of the delay is due to blocking caused by the wormhole routing scheme. The analysis is also extended to virtual cut-through routing and random wormhole routing techniques. The validity of the model is demonstrated by comparing analytical results with those from simulation.

Original languageEnglish (US)
Pages (from-to)806-814
Number of pages9
JournalIEEE Transactions on Computers
Issue number7
StatePublished - Jul 1994

All Science Journal Classification (ASJC) codes

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computational Theory and Mathematics


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