Application-specific permutation networks
Thorsten Dräger, Gerhard Paul Fettweis · International Journal of Embedded Systems · 2008
This paper examines some aspects of the usage of applications specific interconnection networks for highly parallel processors. The networks are based on permutations. Hence, group theoretic methods may be applied to systematically find good networks. Three methods are presented in this paper: partial Schreier Trees, reduced stabiliser chains, and scaling. These methods allow optimum performance for the application specific transfers, and offer compromises between performance of the remaining transfers, and the effort for finding the solution. The combination of all three methods is shown in a case study with a permutation network for a 16-fold processor.