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Polymorphic-torus network

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2 Author(s)
Li, H. ; IBM Almaden Res. Center, San Jose, CA, USA ; Maresca, M.

An interconnection network is presented for a massively parallel fine-grained single-instruction, multiple-data (SIMD) system, called the polymorphic-torus, whose design goal is to provide high communication bandwidth under a packaging constraint. This goal is achieved by the polymorphic principle, which injects switches with circuit-switching capability into every node of a base network (e.g. a two-dimensional torus). The polymorphic approach maintains wiring complexity of the base network but effectively increases the communication bandwidth due to its flexibility in reconfiguring the switches individually and dynamically to match the algorithm graph. Formal analysis on interpackage wiring (the flux) and the intrapackage wiring (the fluid) is given for the polymorphic-torus and the related torus networks. Three algorithms, namely, the Boolean, the max/min, and the sum operations, are developed to illustrate the use of the polymorphic principle in enhancing the communication bandwidth with no penalty of the interpackage wiring complexity

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Computers, IEEE Transactions on  (Volume:38 ,  Issue: 9 )