Re: [CMake] CPack Multicore Usage
> > cause cpack does not "rebuild" the software again, it uses the compiled > software and just starts the "install" into its _CPack_Packages > subdirectories > Just running `cpack` does not. However, CMake does generate a "package" make target that is tied into your dependencies, so if instead of running `make -jN; cpack` you could also run 'make -jN package' which will run the build, since it's a dependency of the package target. - Chuck -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
Re: [CMake] CPack Multicore Usage
I think i had a wrong understanding of the cpack process itself. so i did a cmake configure and called cpack to build the software and generate the packages (deb, tgz) but better would be to configure, build with make -jx and then call cpack, cause cpack does not "rebuild" the software again, it uses the compiled software and just starts the "install" into its _CPack_Packages subdirectories Thank for your patience :-) -Ursprüngliche Nachricht- Von:Chuck Atkins Gesendet: Fr 21.07.2017 21:32 Betreff: Re: [CMake] CPack Multicore Usage An: Konstantin Tokarev ; CC: Jörg Kreuzberger ; cmake@cmake.org; > > > In calls to cpack only one core is used if Makefiles are used. Is there any > option to enable multicore? > > It depends on what your trying to achieve. Typically the bottleneck for > CPack > is in the compression step of the resulting tar (or rpm, etc.). In that > case, > CMake is limited by the libarchive, libz, libbz2, liblzma, etc. > implementations > it's linked to, which are typically single threaded. It's really no > different > than taking an install tree and running "tar -czf foo.tgz > /path/t/foo-prefix". > So in that sense, even if you can parallelizes the "temporary" install step > where it collects the files to packages, actually generating and compressing > the package, which is the costly part, will likely remain a single process. > > > > -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
Re: [CMake] CPack Multicore Usage
> > In calls to cpack only one core is used if Makefiles are used. Is there > any option to enable multicore? > It depends on what your trying to achieve. Typically the bottleneck for CPack is in the compression step of the resulting tar (or rpm, etc.). In that case, CMake is limited by the libarchive, libz, libbz2, liblzma, etc. implementations it's linked to, which are typically single threaded. It's really no different than taking an install tree and running "tar -czf foo.tgz /path/t/foo-prefix". So in that sense, even if you can parallelizes the "temporary" install step where it collects the files to packages, actually generating and compressing the package, which is the costly part, will likely remain a single process. -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
Re: [CMake] CPack Multicore Usage
20.07.2017, 11:22, "Jörg Kreuzberger" : > Hi > > My Project is compiling multicore without any problems using Unix makefiles > or ninja. > > In calls to cpack only one core is used if Makefiles are used. Is there any > option to enable multicore? Yes, you should run make -jN, where N is a number of your cores or slightly larger > If i use ninja in cpack builds, the cpack build is broken, cause there seems > no dependencies considered? > > Is ninja use in cpack intended? Or are there any contraints using ninja and > cpack? > > Greetz, Joerg > > -- > > Powered by www.kitware.com > > Please keep messages on-topic and check the CMake FAQ at: > http://www.cmake.org/Wiki/CMake_FAQ > > Kitware offers various services to support the CMake community. For more > information on each offering, please visit: > > CMake Support: http://cmake.org/cmake/help/support.html > CMake Consulting: http://cmake.org/cmake/help/consulting.html > CMake Training Courses: http://cmake.org/cmake/help/training.html > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/cmake -- Regards, Konstantin -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
[CMake] CPack Multicore Usage
Hi My Project is compiling multicore without any problems using Unix makefiles or ninja. In calls to cpack only one core is used if Makefiles are used. Is there any option to enable multicore? If i use ninja in cpack builds, the cpack build is broken, cause there seems no dependencies considered? Is ninja use in cpack intended? Or are there any contraints using ninja and cpack? Greetz, Joerg -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake