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Bussed interconnection networks from trees

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1 Author(s)
Fiduccia, Charles M. ; Supercomputing Res. Center, Bowie, MD, USA

Pin limitations are a fundamental obstacle in the construction of massively parallel computers. The paper introduces a class of d-dimensional bussed hypercubes that can perform simultaneous bidirectional communication across any dimension using d+1, rather than 2d, ports per node. Each network Qd (T) is based on a tree T, which specifies the 'shape' of the busses, and can perform d(d+1)/2 permutations πij(x)=xc ij via a simple global command. This construction is then generalized to any d permutations II=(π1,. . .,πd) of any set of nodes X. Given any edge-labeled directed tree T, whose kth arc is associated with the permutation πk, a bussed network N (II,T) is constructed that can-in one clock tick-perform any of the O(d2) permutations arising from the paths in the tree T

Published in:

Parallel Processing Symposium, 1992. Proceedings., Sixth International

Date of Conference:

23-26 Mar 1992

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