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Re: [Help-gsl] Speed of Ziggurat Compared With Box Muller on Visual Stud
Re: [Help-gsl] Speed of Ziggurat Compared With Box Muller on Visual Studio 2005
Tue, 11 Dec 2007 15:05:19 +0000
Thank you for the clarification. In that case, do you know what relative
performance I should expect in the release version of GSL? I'm using GSL
complied with Visual Studio 2005 using /O2 as the optimization flag.
On Dec 11, 2007 8:36 AM, Brian Gough <address@hidden> wrote:
> At Wed, 5 Dec 2007 18:10:04 +0000,
> Simon Manning wrote:
> > Ziggurat is approximately twice as fast as Box-Muller, but according to
> > http://seehuhn.de/pages/ziggurat it should be almost 4 times as fast.
> The implementation is slightly different in the released version, to
> make it work with different generators. This is why it is a bit
> slower. The 4x speedup comes from hardcoding a specific 32 bit
> generator into the routine.
> Brian Gough