Abstract
We present a new algorithm for conversion between binary code and binary-reflected Gray code that requires approximately 2 K/3 element transfers in sequence for K elements per node, compared to K element transfers for previously known algorithms. For a binary cube of n=2 dimensions the new algorithm degenerates to yield a complexity of 2 K/+1 element a transfers, which is optimal. The new algorithm is optimal to within a multiplicative factor of 4/3 with respect to the best known 3 lower bound for any routing strategy. We show that the minimum number of element transfers for minimum path length routing is K with concurrent communication on all channels of every node of a binary cube. >
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