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  • Ho, Ching-Tien, et al. (author)
  • An Efficient Algorithm for Gray–to–Binary Permutation on Hypercubes
  • 1994
  • In: Journal of Parallel and Distributed Computing. - 0743-7315 .- 1096-0848. ; 20:1, s. 114-120
  • Journal article (peer-reviewed)abstract
    •  Both Gray code and binary code are frequently used in mapping arrays into hypercube architectures. While the former is preferred when communication between adjacent array elements is needed, the latter is preferred for FFT-type communication. When different phases of computations have different types of communication patterns, the need arises to remap the data. We give a nearly optimal algorithm for permuting data from a Gray code mapping to a binary code mapping on a hypercube with communication restricted to one input and one output channel per node at a time. Our algorithm improves over the best previously known algorithm [6] by nearly a factor of two and is optimal to within a factor of n=(n Gamma 1) with respect to data transfer time on an n-cube. The expected speedup is confirmed by measurements on an Intel iPSC/2 hypercube
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Johnsson, Lennart (1)
Ho, Ching-Tien (1)
Raghunath, M.T. (1)
University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
1994 (1)

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