Processors

Time-Division-Multiplexed Arbitration in Silicon Nan photonic Networks-on-Chip for High-Performance Chip Multiprocessors

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Executive Summary

As the computational performance of microprocessors continues to grow through the integration of an increasing number of processing cores on a single die, the interconnection network has become the central subsystem for providing the communications infrastructure among the on-chip cores as well as to offchip memory. Silicon nanophotonics as an interconnect technology offers several promising benefits for future networks-on-chip, including low end-to-end transmission energy and high bandwidth density of waveguides using wavelength division multiplexing. In this paper, the authors propose the use of time-division multiplexed distributed arbitration in a photonic mesh network composed of silicon micro-ring resonator based photonic switches, which provides round-robin fairness to setting up photonic circuit paths.

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