Hello,
One frequent criticism of Haskell (and by extension GHC) is that it has
unpredictable performance and memory consumption. I personally do not find
this to be the case. I suspect that most programmer confusion is rooted in
shaky knowledge of lazy evaluation; and I have been able to fix, with
relative ease, the various performance problems I've run into. However I
am not doing any sort of performance critical computing (I care about
minutes or seconds, but not about milliseconds).
I would like to know what others think about this. Is GHC predictable? Is
a thorough knowledge of lazy evaluation good enough to write efficient
(whatever that means to you) code? Or is intimate knowledge of GHC's
innards necessary?
thanks,
Jeff
PS I am conflating Haskell and GHC because I use GHC (with its extensions)
and it produces (to my knowledge) the fastest code.
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