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

bulat.ziganshin:

Hello isto,

Thursday, November 2, 2006, 1:16:55 AM, you wrote:

...

I have tried to do different things but now I'm stuck. unsafeRead and unsafeWrite improved a bit the lazy (STUArray-version) and

why you think it's a lazy? :) ST monad is just the same as IO monad internally, only types are different (there is also Lazy.ST monad - this is really lazy)

10-20 times difference is typical for GHC programs.

! It's really more like 2-4x. Sometimes better than C. Where's this huge figure coming from Bulat? If you have code that behaves like this, you should report it. -- Don