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Issue No. 01 - January (1992 vol. 3)
ISSN: 1045-9219
pp: 14-24
Pin minimization is an important issue for massively parallel architectures because the number of processing elements that can be placed on a chip, board, or chassis is often pin limited. A d-dimensional bused hypercube interconnection network is presented that allows nodes to simultaneously (in one clock tick) exchange data across any dimension using only d+1 ports per node rather than 2d. Despite this near two-to-one reduction, the network also allows nodes that are two dimensions apart to simultaneously exchange data; as a result, certain routings can be performed in nearly half the time. The network is shown to be a special case of a general construction in which any set of d permutations can be performed, in one clock tick, using only d+1 ports per node. A lower-bound technique is also presented and used to establish the optimality of the network, as well as that of several other new bused networks.
Index Termspin minimisation; simultaneous data exchange; pin-optimal networks; massively parallelarchitectures; processing elements; chip; board; chassis; bused hypercubeinterconnection network; clock tick; ports; hypercube networks

C. Fiduccia, "Bused Hypercubes and Other Pin-Optimal Networks," in IEEE Transactions on Parallel & Distributed Systems, vol. 3, no. , pp. 14-24, 1992.
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