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Proceedings Paper

WDM interconnection network for traffic with group locality
Author(s): Radim Bartos; Pilar de la Torre
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Paper Abstract

Designing optical communication networks that support large numbers of processors, while maintaining acceptable performance under traffic patterns relevant to parallel- distributed computing, remains an open problem in optical networks research. Central obstacles to its solution appears to hinge on the inadequacy of the standard design methods to overcome the current limitations on the number of available wavelength channels per fiber and the cost and the technologically difficulty of fully-optical switching of wavelength channels. This paper proposes a WDM optical network architecture design within the limits of current technology. The design goals are to support a large number of nodes and to parametrically configure the network to perform with acceptable packet loss under a variety of offered traffic patterns consistent with communication primitives often used in parallel-distributed computing. Scalability problems due to the limitations of multiplexing in a single dimension (e.g., space, time, and wavelength) are alleviated by an orchestration of the communication traffic according to three design strategies: multidimensional space-time-wavelength multiplexing, spatial reuse of wavelengths, and parametrically driven network reconfiguration as collection groups each made up of processor-clusters where the number of processors per cluster is limited by the number of available wavelengths. The design does not require tunable components nor wavelength sensitive switching. A group-localized traffic model is proposed as a motivation for network design and used for its experimental evaluation.

Paper Details

Date Published: 7 October 1998
PDF: 12 pages
Proc. SPIE 3531, All-Optical Networking: Architecture, Control, and Management Issues, (7 October 1998); doi: 10.1117/12.327064
Show Author Affiliations
Radim Bartos, Univ. of New Hampshire (United States)
Pilar de la Torre, Univ. of New Hampshire (United States)


Published in SPIE Proceedings Vol. 3531:
All-Optical Networking: Architecture, Control, and Management Issues
John M. Senior; Chunming Qiao, Editor(s)

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