Hello, Unfortunately I don't have much to add.
On Wed, Mar 13, 2013 at 9:51 PM, Jesper Särnesjö <[email protected]> wrote: > Hi everybody, > > This started out on haskell-beginners, as a question about poor > performance for a Haskell program using OpenGL. Thanks to a few good > suggestions there, I've managed to figure out more or less what the > underlying problem is, but not its cause. > > In short, I have two programs, one written in Haskell [1] and one > written in C [2], that consist of calls to the same functions, in the > same order, to the same C library, but which do not exhibit the same > behavior. Further, the Haskell program behaves differently when > compiled using GHC, and when run in GHCi. I would like to know why > this is, and how to fix it. > There are two major differences between compiled code and code run from ghci. First, ghci always uses the threaded runtime (compiled with -threaded). Second, optimization levels. If you compile your program with -threaded, do you get the desired behavior (e.g. does it work the same as with ghci)? John L.
_______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
