[Fwd: libfreevec benchmarks]
This may be interesting for those concerned about PPC vs. x86
Earthling Michel Dänzer | http://tungstengraphics.com
Libre software enthusiast | Debian, X and DRI developer
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- Subject: libfreevec benchmarks
- From: Konstantinos Margaritis <firstname.lastname@example.org>
- Date: Thu, 21 Aug 2008 19:09:15 +0300
- Message-id: <email@example.com>
Benh suggested that I made this more known, and in particular to this list, so
I send this mail in hope that some people might be interested. In particular,
I ran the following benchmarks against libfreevec/glibc:
libfreevec has reached a very stable point, where me and a couple of others
(the OpenSuse PowerPC port developer being one) have been using it for weeks
(personally I've been using it for months), using the LD_PRELOAD mechanism (as
The OpenSuse guys even consider using it by default on the ppc port even, but
that's not final of course.
glibc integration _might_ happen if glibc developers change their attitude (my
mails have been mostly ignored).
Last, I've also been working on a libm rewrite, though this will take some
time still. I've reimplemented most math functions at the algorithm level, eg.
so far, most functions achieve 50%-200% speed increase at full IEEE754
accuracy (mathematically proven, soon to be published online) without using
Altivec yet, just by choosing a different approximation method (Taylor
approximation is pretty dumb if you ask me anyway).
Linuxppc-dev mailing list
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