Depends on your code... On Mar 4, 2013 6:10 PM, "Łukasz Dąbek" <[email protected]> wrote:
> Hello Cafe! > > I have a problem with following code: http://hpaste.org/83460. It is a > simple Monte Carlo integration. The problem is that when I run my > program with +RTS -N1 I get: > Multi > 693204.039020917 8.620632s > Single > 693204.039020917 8.574839s > End > > And with +RTS -N4 (I have four CPU cores): > Multi > 693204.0390209169 11.877143s > Single > 693204.039020917 11.399888s > End > > I have two questions: > 1) Why performance decreases when I add more cores for my program? > 2) Why performance of single threaded integration also changes with > number of cores? > > Thanks for all answers, > Łukasz Dąbek. > > _______________________________________________ > Haskell-Cafe mailing list > [email protected] > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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