Systolic routing in an optical ring with logarithmic shortcuts

  • Authors:
  • Risto T. Honkanen;Juha-Pekka Liimatainen

  • Affiliations:
  • University of Kuopio, Department of Computer Science, Kuopio, Finland;University of Kuopio, Department of Computer Science, Kuopio, Finland

  • Venue:
  • HPCC'07 Proceedings of the Third international conference on High Performance Computing and Communications
  • Year:
  • 2007

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Abstract

We present an all-optical ring network architecture with logarithmic shortcuts and a systolic routing protocol for it. An r-dimensional optical ring network with logarithmic shortcuts (ORLS) consists of n = 2r nodes and r2r optical links. We study a systolic routing protocol that is based on cyclic changes of the states of routers and scheduled sendings of packets. The protocol ensures that no electro-optical conversions are needed in the intermediate routing nodes and all the packets injected into the routing machinery reach their targets without collisions. A work-optimal routing of an h-relation is achieved with a reasonable size of h ε Ω(n log n).