Channels vs looped memory accesses

I should mention that there are a few small typos in Fig. 6 of that paper. The fifth line should read "int Sd_private[2][N];", the eleventh line "int Sd = Sd_private[0][j];", and the sixth line from the bottom "Sd_private[1][j + 1] = S;". I had copied and pasted from the channel example in Fig. 5 and forgot to modify for the channel depth needing to be manually managed using shift registers. The current preferred implementation should follow Fig. 6 rather than Fig. 7.