Replies to post #2513 on AMD strictly moderated (AMD)

[wbmw]

Re: You realize Intel's compiler does this, right?

Nope. Look here.

http://www.spec.org/osg/cpu2000/results/res2006q1/cpu2000-20060121-05426.html
http://www.spec.org/osg/cpu2000/results/res2006q1/cpu2000-20060121-05432.html

This uses Intel's newest compiler on a single core 3.0GHz and dual core 3.0GHz submission on the exact same platform. No visible improvement.

And then there's this:

http://www.spec.org/osg/cpu2000/results/res2006q1/cpu2000-20060213-05607.html
http://www.spec.org/osg/cpu2000/results/res2006q1/cpu2000-20060213-05609.html

Sun adds a second processor, and the score improves by more than 5% in base and more than 8% in peak.

Looks like Sun is the one using auto-parallization techniques to artificially raise their SPEC score. Pretty cool from the compiler team, but very difficult to get these routines to put forth gains in general purpose applications.