Parallel FFT and Hypercubes II
The relevance of this to Cooley Tukey FFT can be seen from basic recursive step which precisely involves linking Fourier coefficients which also just differ by one in a single binary digit
Hypercube had other useful features e.g. the 64 node 6 dimensional hypercube includes meshes (8 by 8, 4 by 4 by 4, 2 by 8 by 4 etc.)
However nowadays one builds general purpose switches (communication systems) and does not focus on particular communication topologies
Hypercube Topology for 8 machines