[Numpy-discussion] Atlas and dual core

Stephen Walton stephen.walton at csun.edu
Wed Jul 19 23:44:08 CDT 2006


Keith Goodman wrote:

>Is there much speed to be gained by compiling atlas for a dual core system?
>  
>
I imagine the answer is yes.  However, Clint Whaley literally just today 
announced the first release of a beta version of ATLAS whose 
configuration utility actually supports Core Duo, although probably only 
under OSX.  Check Clint's message at

http://sourceforge.net/mailarchive/forum.php?thread_id=25989825&forum_id=426

By the way, everyone should also read the immediately previous message, 
posted a few weeks earlier by Clint.  gcc 4.x gives significantly worse 
floating point performance than gcc 3.x on most x86 platforms.  
Something to be aware of if you're benchmarking.  He's communicated 
about the problem to the gcc developers, but is, ah, less than confident 
they'll fix the problem.

Steve





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