Thanks all for your answsers. I still wonder why some people get very different results between gcc and ghc, and some others don't. A difference in processor?
I guess I will crank up a little package using criterion and producing two executables to make sure anyone who run the benchmark use the same options, and ease the whole process. Thanks, Thu 2010/9/15 Daniel Fischer <[email protected]>: > On Wednesday 15 September 2010 02:50:15, David Terei wrote: >> On 13 September 2010 20:41, Vo Minh Thu <[email protected]> wrote: >> > ... the post is from 2008. No LLVM goodness. So I thought GHC 6.12.1 >> > (not the latest and greatest HEAD) would be enough. >> >> I compiled the two programs myself out of curiosity and got the >> following times. >> >> Linux, 64bit, Ubuntu 10.10: >> >> 1e8 >> clang: 0.180s >> gcc: 0.179s >> ghc 6.12.1 (viac): 0.187s >> ghc 6.12.1 (fasm): 0.218s >> ghc HEAD (viac): 0.186s >> ghc HEAD (fasm): 0.179s >> ghc HEAD (llvm): 0.174s >> >> 1e9 >> clang: 1.657s >> gcc: 1.647s >> ghc 6.12.1 (viac): 1.653s >> ghc 6.12.1 (fasm): 1.975s >> ghc HEAD (viac): 1.648s >> ghc HEAD (fasm): 1.658s >> ghc HEAD (llvm): 1.646s >> >> So basically all have the same time except ghc 6.12.1 where fasm is a >> little slow. >> >> On windows xp 32bit I get quite different results which I trust less >> as the times are jumping around much more then they were on linux: >> >> 1e8 >> gcc: 0.365s >> ghc 6.12.1 (viac): 5.287s >> ghc 6.12.1 (fasm): 1.332s >> ghc HEAD (viac): 5.292s >> ghc HEAD (fasm): 0.875s >> ghc HEAD (llvm): 0.359s >> >> Not sure why the results on windows are so different. > > I have no idea why, but I remember that on several occasions timings for > via-C compiled programmes on Windows have been abysmal. > Whether it's a general Windows/gcc mismatch or something GHC-specific, I've > no idea (and can't find out, not having Windows). > > For what it's worth, the approximate timings on my 32-bit linux (openSUSE > 11.1) box have been > > 1e8 > gcc: ~0.4s > 6.12.3 (viac): ~1.2s > 6.12.3 (fasm): ~2.7s > HEAD the same as 6.12.3 > > (I have deleted the programmes and I don't remember the exact timings, if > you're interested, I could reconstruct them). > >> If anyone else >> wants to run the two programs on Windows and check that would be >> great. >> >> Cheers, >> David > > _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
