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Proceedings Paper

Multi-Gb/s optical computer interconnect
Author(s): Jon R. Sauer
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Paper Abstract

A crucial component in a future teraflop, distributed, massively-parallel processing system is an interconnection network capable of reaching an aggregate capacity of a terabyte-per-second with gigabyte-per-second access rates for each user. This is the target of the architecture described here, which is the optoelectronic extension of the interconnect previously used in a shared-memory, distributed, MIMD supercomputer. Because of its inherent flexibility, at a lower performance level this same architecture could also meet the growing near-term interconnect needs within and between current large computing centers. The architecture provides small block transfers, a source-destination latency approaching the physical minimum, high average and burst user bandwidth, and expandability to thousands of distributed users. The packet payloads remain in optical format from source to destination while being switched in the multi-state, multi-path network. Large-scale data compression by wavelength results in packets of a few nanoseconds length. Self-routing at intermediate nodes is achieved with brief excursions of the control headers into the electronic domain, where pipelined processors implement a hot potato/deflection switching protocol. A system demonstration is currently under construction.

Paper Details

Date Published: 1 October 1991
PDF: 13 pages
Proc. SPIE 1579, Advanced Fiber Communications Technologies, (1 October 1991); doi: 10.1117/12.50139
Show Author Affiliations
Jon R. Sauer, Univ. of Colorado/Boulder (United States)


Published in SPIE Proceedings Vol. 1579:
Advanced Fiber Communications Technologies

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