[Haskell-cafe] How to improve speed? (MersenneTwister is several times slower than C version)

isto isto.aho at dnainternet.net
Thu Nov 2 02:26:37 EST 2006


When writing IO version, I wasn't aware of other twister versions,
and the only reason is/was that it was easiest to me and that I knew
(believed) that plain lists would have been inefficient.  I just wanted
to see and learn, how close to C version this can be made.  (And still

There were some good suggestions on this thread - next I'll try 
to get grasp on how to apply the suggestions and do something...

br, Isto

ke, 2006-11-01 kello 22:04 -0500, Lennart Augustsson kirjoitti:
> The whole point of writing the Mersenne Twister was that I wanted to  
> show how a stateful computation could be encapsulated in the ST monad  
> and none of it showing up outside.  This aspect of the code is  
> totally gone now when everything is in the IO monad.  Is there some  
> good reason to have it in the IO monad?

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