Construction of vertex-disjoint paths in alternating group networks

  • Authors:
  • Shuming Zhou;Wenjun Xiao;Behrooz Parhami

  • Affiliations:
  • Key Laboratory of Network Security and Cryptology, Fujian Normal University, Fuzhou, People's Republic of China 350108 and College of Mathematics and Computer Science, Fujian Normal University, Fu ...;Dept. Computer Science, South China University of Technology, Guangzhou, People's Republic of China 510641;Dept. Electrical and Computer Engineering, University of California, Santa Barbara, USA 93106-9560

  • Venue:
  • The Journal of Supercomputing
  • Year:
  • 2010

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Abstract

The existence of parallel node-disjoint paths between any pair of nodes is a desirable property of interconnection networks, because such paths allow tolerance to node and/or link failures along some of the paths, without causing disconnection. Additionally, node-disjoint paths support high-throughput communication via the concurrent transmission of parts of a message. We characterize maximum-sized families of parallel paths between any two nodes of alternating group networks. More specifically, we establish that in a given alternating group network AN n , there exist n驴1 parallel paths (the maximum possible, given the node degree of n驴1) between any pair of nodes. Furthermore, we demonstrate that these parallel paths are optimal or near-optimal, in the sense of their lengths exceeding the internode distance by no more than four. We also show that the wide diameter of AN n is at most one unit greater than the known lower bound D+1, where D is the network diameter.