On Friday 16 July 2010 11:11:24 Loïc Minier wrote: > On Fri, Jul 16, 2010, Konstantinos Margaritis wrote: > > softfp: > > I wonder what you built with softfp exactly? Did you rebuild > libc6, libpng12-0 for instance? Not that I expect that most of the > time is spent in libpng12-0, but still.
I didn't build anything, I just installed the default package from karmic - which as you already said is softfp. > As I understand it, we have these options: > - keep Debian armel as is, add a new armhf hard-float port > - keep Debian armel as is, and provide an archive of Debian armel+vfp > rebuilt with softfp > - keep Debian armel as is, and change a dozen of libs to provide a VFP > version (softfp) Obviously, I vote for the first option :) > One way to check how well softfp performs would be to run povray in > Ubuntu versus in Debian; this will mix noise in the results, but I > don't expect the minor sourceful differences to make the biggest > impact, but rather the toolchain opts would. (You're speaking of a > 3-folds increase.) I don't have a debian armel installation here, so I can't test how it performs there, however running the same version on a g...@1ghz running squeeze -no altivec- I got total runtime 20 seconds, which is imho indicative of the potential performance of the imx...@800mhz, as the ARM vfp is much less powerful than the G4's. 20 vs 50, sounds almost expected, 20s vs ~3min sounds like a joke. -I know ARM is not a cpu fit for rendering, but that's beside the point. > archive dist toolchain defaults > ------- ---- ------------------ > Debian armel sid, squeeze armv4t + soft > freevec.org karmic armv6 + hardfp > Ubuntu armel karmic armv6 + softfp > Ubuntu armel jaunty armv5t + soft > Ubuntu armel lucid armv7t2 + softfp > > Would be nice to know against which userspace you ran your povray > "softfp". I did say that, it is a default karmic installation, the efikas come preinstalled with that. Konstantinos -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
