Re: [Haskell-cafe] Haskell-Cafe Tag (was: Optimizations and parallel execution in the IO for a small spellchecker)

I was not aware that it was something a poster was supposed to do, but now I notice that while the messages I get from the list have [Haskell-Cafe] on their subject, the ones I post don't. The Haskell-Cafe info page (http://www.haskell.org/mailman/listinfo/haskell-cafe) does not mention that you should have that tag in the subject. I'm probably a uncouth Frenchman knowing nothing about netiquette, but surely the list software could add such a tag if it was required? JP On Wed, Feb 15, 2012 at 8:14 PM, Paul Sujkov wrote:

Sorry, I've forgotten to add a [Haskell-Cafe] tag for the message.

On 15 February 2012 19:33, Paul Sujkov wrote:

...

Hi everyone,

http://hpaste.org/63732

that's a very simple spellchecker application: it consumes standard Linux dictionary, reads a file, and prints out words from that file that are not on the dictionary. I have taken it from a little cross-language benchmark and used to benchmark existing hash table implementations available on Hackage (with one used in code being the best according to timings). The question is: can I go further and effectively execute lookup and (maybe) output (line 20 or line 26 in the snippet) in parallel?

I'm not good at all with Haskell parallel packages; I've tried monad-parallel (naive implementation eats away all the memory available) and parallel (haven't tried Par monad yet), but the last dosn't seem to fit well with the IO operations. If anyone can give me any suggestions on how can I implement parallel execution, or any thoughts on further sequential optimizations, it would be deeply appreciated.

-- Regards, Paul Sujkov

-- Regards, Paul Sujkov

_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- JP Moresmau http://jpmoresmau.blogspot.com/