[Haskell-cafe] haskell version of fractal benchmark

Bayley, Alistair Alistair_Bayley at invescoperpetual.co.uk
Fri Jun 8 04:56:45 EDT 2007

> [mailto:haskell-cafe-bounces at haskell.org] On Behalf Of Andrew Coppin
> Donald Bruce Stewart wrote:
> > Some things to remember using Doubles:
> >
> >     * {-# OPTIONS -fexcess-precision #-} 
> >     * -fvia-C
> >     * -fbang-patterns
> >     * -optc-O2 -optc-mfpmath=sse -optc-msse2
> >     * -optc-march=pentium4
> 1. What do all those things do?
> 2. Is the effect actually that large?

Large? Depends what you mean by large, but adding a few flags to get
just a 10-20% speedup isn't to be ignored:


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