[Haskell-cafe] the last mile in haskell performance

David Kraeutmann kane at kane.cx
Thu Nov 12 17:56:26 UTC 2015

This might be of interest to you:

On 11/12/2015 6:49 PM, Alberto G. Corona wrote:
> Looking at this:
> https://downloads.haskell.org/~ghc/6.12.3/docs/html/users_guide/primitives.html
> It seems that it is impossible to manage data in Haskell within a core
> without L1 cache faults. Except for unboxed arrays of primitive types.
> Since it is impossible to have unboxed arrays of user-defined types.
> Am I right?
> This is definitively very bad for tasks that are inherently single threaded
> and in general for the image of Haskell as a practical language.
> I have more to say about that, but I would like to know first if I´m right
> and second If there is some idea to going on to permit user defined boxed
> datatypes.  Or if there is some low level trick for having it using foreign
> call and unsafeCoerce in some way,
> I know that the language ATS has unboxing a la carte....
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