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Re: give me back performance on sixtrack
On Monday 12 September 2005 19:52, Mark Mitchell wrote:
> Sebastian Pop wrote:
> > Hi,
> >
> > with this patch, we get back the performance on sixtrack: on amd64,
> > mainline is at 482, mainline + patch is at 508.
>
> Yay!
Funny timing for you reply, Mark :-) I was just about to point out that
this improvement sounds good but that it'd be even better if it would
also show up on the AMD64 SPEC boxes that SUSE and RedHat operate.
But...
http://www.suse.de/~aj/SPEC/amd64/CFP/sandbox-britten/200_sixtrack_recent_big.png
http://people.redhat.com/dnovillo/spec2000.em64t/gcc/200.sixtrack-run-ratio.png
...it doesn't ;-)
Seb, are you sure your measurements were accurate? What flags did you
use (-ffast-math perhaps), did you do enough iterations, etc. ?
Gr.
Steven