Energy-aware routing in hybrid optical network-on-chip for future multi-processor system-on-chip
Journal of Parallel and Distributed Computing
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In optical multichip system, called Gaussian macro chip, where embedded chips are interconnected by an optical Gaussian network. By taking advantage of the underlying Hamiltonian cycles in the Gaussian network, we design a buffer less routing algorithm for the Gaussian macro chip, which routes packets along the shortest path in the absence of deflection, and guarantees that deflected packets reach their destinations along a segment of the Hamilton cycle. Our extensive simulation results demonstrate that by adopting the proposed routing algorithm, Gaussian macro chip can support much higher inter-chip communication bandwidth, has much shorter average packet delay, and is more power efficient than the previously proposed architectures for optical multichip systems.