Date:  Sun, 09 Mar 2003 10:16:57 -0500
From:  madodel at ptdprolog.net
Subject:  [VOICENWS] SW: New compilation of Lame MP3 encoder

From: "Paul Smedley" <paul at smedley.info> 

This archive <http://hobbes.nmsu.edu/pub/incoming/lame-gcc321.zip>
contains a quick  compile of the current alpha (as at 9th March 2003)
release of the LAME MP3 encoder  for OS/2.  The GCC v3.2.1 compiler for
OS/2 was used.

Two different versions of the .exe are included:
lame-3-93-1.exe - Latest STABLE version of Lame
lame-3-94a11.exe- Latest CVS Alpha version of Lame as at 7th March, 2003

I ran benchmarks with the following results:
 Lame switches used: -b 192 -ms

 Lame v3.93.1 Athlon optimisations, GCC 3.0.3: 11.5x
 Lame v3.93.1 Athlon optimisations, GCC 3.2.1: 13.9x
 Lame v3.94a11 No optimisations, GCC 3.0.3: 10.3x
 Lame v3.94a11 No optimisations, GCC 3.2.1: 13.4x
 Lame v3.94a11 Athlon optimisations, GCC 3.2.1: 15.7x

Clearly - the new GCC v3.2.1 compiler produces much faster code than GCC
3.0.3 - and  faster again when Athlon switches are used.

I'd be interested to hear results from Pentium III/IV users if the new
Athlon XP  optimisations in GCC v3.2.1 produce executables that work on
Intel hardware.  I have  only AMD machines here so can't test.

Any comments/feedback email me at paul at smedley.info with LAME in the
subject.

Enjoy!


                           

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