Yes, I think that we can stay with boost::python. But we need to put minieigen sources back into yade.
best regards Janek Anton Gladky said: (by the date of Sun, 23 Feb 2020 22:08:47 +0100) > Hi Janek, > > thanks a lot for this quick tests and results! Really impressive! > > As far as I see, there is not benefit for us to replace boost::python, > at least right now? > > Regards > > Anton > > Am So., 23. Feb. 2020 um 16:02 Uhr schrieb Janek Kozicki (yade) > <jkozicki-y...@pg.edu.pl>: > > > > > Another note: I just realized that the compilation benchmarks might > > > have not been fair, because I think that I added few more > > > registrations (like Vector2c, or sth. like that) while doing pybind > > > migration. I will compare again without these extra registrations. > > > > OK, I have compared with the exact same registrations. And it seems > > that pybind has many advantages, but not the one that it is compiling > > faster. See: > > > > pybind without debug info; call `ccache --clear` between every invocation. > > -O3 -j 1 -O3 -j 10 > > wall clock time: 2:41.14 wall clock time: 0:40.67 > > wall clock time: 2:46.56 wall clock time: 0:41.28 > > wall clock time: 2:47.42 wall clock time: 0:42.54 > > wall clock time: 2:43.79 wall clock time: 0:44.70 > > > > -O1 -j 1 -O1 -j 10 > > wall clock time: 2:09.88 wall clock time: 0:35.00 > > wall clock time: 2:10.78 wall clock time: 0:33.46 > > wall clock time: 2:08.19 wall clock time: 0:32.62 > > wall clock time: 2:10.10 wall clock time: 0:32.73 > > > > ================================================================================ > > boost::python without debug info; call `ccache --clear` between every > > invocation. > > -O3 -j 1 -O3 -j 10 > > wall clock time: 2:16.83 wall clock time: 0:33.88 > > wall clock time: 2:15.96 wall clock time: 0:32.84 > > wall clock time: 2:16.00 wall clock time: 0:34.85 > > wall clock time: 2:16.52 wall clock time: 0:32.32 > > > > -O1 -j 1 -O1 -j 10 > > wall clock time: 2:01.48 wall clock time: 0:28.56 > > wall clock time: 2:00.70 wall clock time: 0:29.15 > > wall clock time: 2:01.29 wall clock time: 0:28.05 > > wall clock time: 2:00.56 wall clock time: 0:28.35 > > > > The main pybind disadvantage is unstable API. I don't like writing > > extra code to support older linux distributions. > > > > > > Also I think that if while copying minieigen into yade we did some > > extra rebalancing between the .cpp files, so that in each file there's > > about the same amount of registrations performed, then we could > > reduce (parallel) compilation time to maybe 25 or 20 seconds. > > > > > > If you wanted to compile and try yourself, the comparison was between > > branches master and tryPybind. To see how to compile see .gitlab-ci.yml, > > I'm sorry that it's a bit messy. I was never good at using build > > systems ;) I just wanted parallel build quickly. That's why I wrote > > such strange makefile. > > > > best regards > > Janek > > > > > > > > > Another comparison note: > > > > > > 8. boost::python is much more picky about the order of registered > > > functions, and sometimes does not work if the order is "wrong". > > > pybind always resolves the function overloads correctly. > > > > -- > > -- > > Janek Kozicki, PhD. DSc. Arch. Assoc. Prof. > > Gdańsk University of Technology > > Faculty of Applied Physics and Mathematics > > Department of Theoretical Physics and Quantum Information > > -- > > http://yade-dem.org/ > > http://pg.edu.pl/jkozicki (click English flag on top right) -- -- Janek Kozicki, PhD. DSc. Arch. Assoc. Prof. Gdańsk University of Technology Faculty of Applied Physics and Mathematics Department of Theoretical Physics and Quantum Information -- http://yade-dem.org/ http://pg.edu.pl/jkozicki (click English flag on top right) _______________________________________________ Mailing list: https://launchpad.net/~yade-dev Post to : yade-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp
