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Issue No.12 - December (1994 vol.43)
pp: 1434-1439
<p>Since the hypercube is not incrementally scalable, a variant hypercube topology with more flexibility in the system size, called an incomplete hypercube, is examined. An incomplete hypercube may also result from a complete hypercube which operates in a degraded manner after some nodes fail. Elementary properties, including diameter, mean internode distance, and traffic density, of incomplete hypercubes with size 2/sup n/+2/sup k/, 0/spl les/k/spl les/n, are derived. Interestingly, traffic density over links in such an incomplete hypercube is found to be bounded by 2 (messages per link per unit time), despite its structural nonhomogeneity. Thus, cube links can easily be constructed so as to avoid any single point of congestion, guaranteeing good performance. The minimum incomplete hypercubes able to embed binary trees with node adjacencies preserved are determined.</p>
hypercube networks; message passing; tree embedding; structural embedding; incomplete hypercubes; cube links; binary trees; node adjacencies.
Nian-Feng Tzeng, Hsing-Lung Chen, "Structural and Tree Embedding Aspects of Incomplete Hypercubes", IEEE Transactions on Computers, vol.43, no. 12, pp. 1434-1439, December 1994, doi:10.1109/12.338105
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