Incrementally scalable optical interconnection network with a constant degree and constant diameter for parallel computing

Ahmed Louri, Costas Neocleous

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


A new scalable interconnection topology called the spanning-bus connected hypercube (SBCH) that is suitable for massively parallel systems is proposed. The SBCH uses the hypercube topology as a basic building block and connects such building blocks by use of multidimensional spanning buses. In doing so, the SBCH combines positive features of both the hypercube (small diameter, high connectivity, symmetry, simple routing, and fault tolerance) and the spanning-bus hypercube SBH! (constant node degree, scalability, and ease of physical implementation), while at the same time circumventing their disadvantages. The SBCH topology permits the efficient support of many communication patterns found in different classes of computation, such as bus-based, mesh-based, and tree-based problems, as well as hypercube-based problems. A very attractive feature of the SBCH network is its ability to support a large number of processors while maintaining a constant degree and a constant diameter. Other positive features include symmetry, incremental scalability, and fault tolerance. An optical implementation methodology is proposed for the SBCH. The implementation methodology combines the advantages of free-space optics with those of wavelength-division multiplexing techniques. An analysis of the feasibility of the proposed network is also presented.

Original languageEnglish (US)
Pages (from-to)6594-6604
Number of pages11
JournalApplied optics
Issue number26
StatePublished - Sep 10 1997


  • Interconnection networks
  • Massively parallel processing
  • Optical interconnects
  • Product networks
  • Scalability
  • Wavelength division multiplexing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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