This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

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

Mark Mitchell wrote: 
Excellent question; I should have asked for that as well.  If 4.2 has
gained on 4.1 in other respects, the 4.7% drop might represent a smaller
regression relative to 4.1.

There is the 4.2 (r120817) vs. 4.1.2 release FP performance comparison numbers. SPECfp_base2006 of gcc 4.2 has 19% performance gain over 4.1.2.

410.bwaves	1.9%
416.gamess	55.0%
433.milc	3.6%
434.zeusmp	39.8%
435.gromacs	0.6%
436.cactusADM	33.3%
437.leslie3d	-6.9%
444.namd	80.1%
447.dealII	13.5%
450.soplex	0.8%
453.povray	14.4%
454.calculix	182.4%
459.GemsFDTD	-8.3%
465.tonto	21.5%
470.lbm 	-4.6%
481.wrf 	-6.4%
482.sphinx3	0.0%
SPECfp_base2006	18.8%

- Grigory

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]