POV-Ray : Newsgroups : povray.macintosh : Benchmarks updated Server Time
25 Oct 2021 21:27:08 EDT (-0400)
  Benchmarks updated (Message 1 to 1 of 1)  
From: Ron Olson
Subject: Benchmarks updated
Date: 19 Oct 2004 18:23:55
Message: <olsonr-A03B03.17235419102004@news.povray.org>
Hi all-

Well, I got myself a copy of IBM's xlc compiler for the G5 (not the beta 
as it expired) and decided to do some more (seriously unofficial) 
benchmarking on my dual G5 2ghz.

The long and the short of it is that the official Mac version as 
downloaded from the Povray website still wins at 32 minutes, 5 seconds.

I downloaded the 3.6.1 source tarball and compiled it using xlc two ways

-O3 -qarch=g5 -qaltivec


-O5 -qarch=ppcv -qaltivec -qnostrict -qfloat=nonans -qignerrno

The surprise is that the less optimized version (-O3) ran it in 35 
minutes, 43 seconds. The more optimized version (-O5) did it in 39 
minutes, 47 seconds.

I also used gcc with -mpowerpc-gpopt -mpowerpc64 -faltivec and got 38 
minutes, 37 seconds. Compare this with the way it's compiled when 
installed via Fink and you get 39 minutes, 35 seconds.


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