Re: 40% performance regression SPEC2006/leslie3d on gcc-4_2-branch

["Richard Guenther" <richard dot guenther at gmail dot com>]

On 2/20/07, Grigory Zagorodnev <grigory_zagorodnev@linux.intel.com> wrote:
> Mark Mitchell wrote:
> >> FP performance regressions of the recent GCC 4.2 (revision 120817)
> >> compiler against September GCC 4.2 (revision 116799)
> > What does that translate to in terms of overall score?
> >
> Hi,
> This is 4.7% drop of SPECfp_base2006 ratio (geomean of individual FP
> ratios).
>
> Here is the full set of changes in cpu2k6/fp performance of GCC 4.2
> compiler between r116799 and r120817, measured on Intel Core2 Duo at -O2
> optimization level.

Do you happen to have a 4.1.x baseline to compare those against?

Richard.

> 410.bwaves      -6.3%
> 416.gamess      -0.7%
> 433.milc        -7.0%
> 434.zeusmp      0.0%
> 435.gromacs     -0.4%
> 436.cactusADM   -1.1%
> 437.leslie3d    -25.4%
> 444.namd        0.0%
> 447.dealII      -1.4%
> 450.soplex      -3.9%
> 453.povray      0.0%
> 454.calculix    -0.3%
> 459.GemsFDTD    -18.3%
> 465.tonto       -2.5%
> 470.lbm         -4.1%
> 481.wrf         -2.7%
> 482.sphinx3     -1.2%
> SPECfp_base2006 -4.7%
>
> - Grigory