On Tuesday 04 December 2012 Dec, Dmitry Kazakov wrote: > Cons: > 1) Currently the code depends on Vc's 'staging' branch, so it can't be put > in master. For now all the changes are kept in > 'vector_compositioning_kazakov' branch.
Is there any estimated time of arrival for staging to get to Vc master? Ideally, we'd be able to push this to 2.6.1, too. Maybe we can ask Vir to create a special release for us? I think he likes to see Vc being used :-) > 2) I used fat-binary approach for code generation. It means that all the > versions of the code are put into a single binary (libpigmentcms.so) and > therefore are loaded into user's RAM on the start. This is a matter of > excessive 3 MiB of user's RAM (libpigmentcms.so grew 15MiB -> 18MiB [1]) Well, I'm not sure that that is actually what happens. Given an .so or .dll, stuff only get loaded when used. I wouldn't assume that everything gets loaded in one go. > 3) If we want the binary to be redistributable, the compiler optimization > for the rest of the code (not hotspots) must be disabled. In the benchmarks > it leads to a slight (~20%) performance degradation on *some* of the tests. > This is actually not much in comparison with the gain we get from using > vector instructions, but still... Do you have a list of these places? Maybe we can vectorize those too :-) <...> > Taking all this into account I decided to introduce a new option for the > Calligra build system: PACKAGERS_BUILD. Good plan. > > When the option is ON, the per-architecture builds are activated. The > optimization for all the other parts is disabled. This is exactly what is > needed by packagers. > When the option is OFF, the whole Calligra project is optimized for the > host CPU. No per-arch build are, therefore, done. This option is the best > choice for users who build Calligra themselves. > > By default the option is OFF. It means that we need to tell packagers to > activate it. Where should I write about it? Do we have any packager's > manual? There's a readme. packagers in the root dir, also, we need to mail kde-packa...@kde.org. > > I would appreciate any comments from you about this! :) > \ I'm all for it! -- Boudewijn Rempt http://www.valdyas.org, http://www.krita.org, http://www.boudewijnrempt.nl _______________________________________________ calligra-devel mailing list calligra-devel@kde.org https://mail.kde.org/mailman/listinfo/calligra-devel
