The Haskell version was not compiled or run as a multithreaded application. Given sufficient heap to avoid a GC in the middle of the run I'm seeing ~ 375ms +/- 25
https://github.com/RayRacine/skynet/blob/haskell/haskell/Sky...
https://github.com/RayRacine/skynet/blob/haskell/haskell/Sky...