[Haskell-cafe] Re: [Announce] primes

Sebastian Fischer sebf at informatik.uni-kiel.de
Thu Apr 16 11:22:08 EDT 2009

> I have just finished benchmarking all the implementations provided  
> in http://www.cs.hmc.edu/~oneill/code/haskell-primes.zip (the zip  
> file linked to from the Haskell wiki article on primes).
> NaurPrimes.hs is by far the fastest version, and at least 2 or 3  
> times faster than your current implementation.

Thanks for the benchmarks!

> I'm pretty sure it also uses less memory.

Do you understand the memory requirements of my implementation? I'm  
not sure if I do. Is it only that the queue of multiples gets larger  
and larger the more primes we query?

> I want to find efficient algorithms for the other proposed functions  
> before forking, but I figured I'd let you know in the meantime.

Thanks! Feel free to incorporate ideas from NaurPrimes.hs. I don't  
understand them yet.


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