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
