On 2 Sep 2010, at 08:49, Chiheng Xu wrote: > Suppose you have a ultra large project, it will consume 5 minutes to > CMake, 2 hours to build serially. If you have an 64 Cores ccNUMA > systems, like Xeon 7500 (8 Cores * 8), theretically, you will have a > 60+ accelaration in parallel build. Theretically, it will consume > less than 2 minutes to parallelly build, but it will also consume 5 > minutes to serially CMake. So, If you "cache" the Makefiles, it will > only consume less than 2 minutes to build.
First of all, I'm not aware of any development teams using that level of hardware and I doubt yours are either. Secondly, you'll find that as the CPU power grows, building is limited by disk IO and memory bandwidth rather than CPU power. Regardless, what you are saying is that it will take 2 minutes to build EACH TIME and 5 minutes to run CMake ONCE (as you said developers rarely ever touch CMake files). If you want to use Makefiles, fine, but without benchmarks your argument is pretty meaningless FUD against CMake and other makefile generators. -- Cheers, Mike McQuaid http://mikemcquaid.com _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
