Abstract
Packet-switched networks on chip (NoC) have been advocated as a natural communication mechanism among the processing cores in future chip multiprocessors (CMP). However, electronic NoCs do not directly address the power budget problem that limits the design of high-performance chips in nanometer technologies. We make the case for a hybrid approach to NoC design that combines a photonic transmission layer with an electronic control layer. A comparative power analysis with a fully-electronic NoC shows that large bandwidths can be exchanged at dramatically lower power consumption.
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