Hello Asfand, Monday, July 17, 2006, 7:31:23 PM, you wrote:
I finally got my spiffy dual-core processor (an Opteron 165 no-less) and want to learn STM, since I think it and haskell are the future of concurrent programming.
How do I compile Haskell to be able learn STM on it, using "proper" threading? I know there's a parallel haskell flag, but I read somewhere about it running on top of some special server that lets it work in parallel threads or something.
you should compile with "-threaded" flag which allows to preempt threads created in your program with forkIO/forkOS if you want to really use 2 processors, you should use ghc 6.5, which is still in beta stage. ghc 6.4 executes all the Haskell code on one processor (to be exact, at each moment there is only one program thread executing Haskell code) look at http://www.cse.unsw.edu.au/~chak/haskell/ghc/comm/rts-libs/multi-thread.html which describes 6.4 situation http://research.microsoft.com/Users/simonpj/papers/marktoberdorf/marktoberdo... contains Concurrency chapter what says more about concurrency in GHC You can find more information about concurrency and STM at the http://haskell.org/haskellwiki/GHC/Concurrency page ps: are you one of Iranian hackers cheating A-bomb? ;) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com