Reconfigurable Parallel Computer Architecture Based on Wavelength-Division Multiplexed Optical Interconnection Network

Reconfigurability is a desirable characteristic in parallel computer architecture that supports the structural parallelism inherent to multiple parallel algorithms. This paper presents a novel approach to achieve reconfigurability via a multiple-domain wavelengthdivision multiplexed optical interconnection network. A network structure is defined to host a set of point-to-point guest interconnection topologies. Fast complete reconfiguration takes place by re-labeling node identifiers and re-tuning receiver filters according to a local table at each node. For a network of size N , the connecting fiber complexity is O(N ), the same order of the link complexities of the individual topologies. The proposed network avoids the possible edge dilation, congestion, and cumulative switching latencies associated with previously proposed approaches. Keywords: Parallel computer architecture, reconfigurability, interconnection networks, virtual topology, optical interconnection. 1. Introduction The..