Re: Speed of Quartz (was: optimizing compilers)
Re: Speed of Quartz (was: optimizing compilers)
- Subject: Re: Speed of Quartz (was: optimizing compilers)
- From: Bruno Blondeau <email@hidden>
- Date: Tue, 05 Feb 2002 20:30:58 +0100
on 5/02/02 19:58, Finlay Dobbie - email@hidden wrote:
>
>
On Tuesday, February 5, 2002, at 08:40 AM, Bruno Blondeau wrote:
>
>
> Another reason why Quartz is slow may be in the current math library
>
> (not by
>
> a 10x factor, though).
>
>
>
> The MacOS 9 math lib was much faster than the currently used one, and I
>
> guess Quartz is doing a lot of trigonometric calls (even if common
>
> cases are
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> optimised manually).
>
>
>
> I heard Apple is working on this, however. (well, the bug has been filed
>
> numerous times, and it is in the opensource database...)
>
>
I think Apple moved to a PPC assembly mathlib in 10.1...
To the best of my knowledge, we still have a C-based (originated from
FreeBSD) math lib in 10.1.
However, this seems to be planned for MacOS X 10.2
http://www.opensource.apple.com/bugs/X/Libraries/2692951.html
Bruno Blondeau
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