"For high-performance computing you want to avoid such software engineering abstractions as classes, objects, etc...." Therefore, I would say, since Haskell makes possible many fine-levels of abstraction, if the compiler can strip most of these away, then it would come close to the speed of C (i.e. C++ without most of the software engineering abstractions). Still, I remember that quote that, "Another level of indirection solves everything." Or If you're Penn & Teller, "Another level of misdirection solves everything." Casey -- -- Regards, KC