On Wed, Sep 16, 2015 at 9:17 AM, Greg Marr <[email protected]> wrote: > On Wed, Sep 16, 2015 at 5:55 PM, Cory Quammen <[email protected]> > wrote: >> VTK exposes the /MP compiler flag in its CMake configuration. >> >> Here is the relevant code from >> http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=CMake/vtkDetermineCompilerFlags.cmake;h=1398050afb34ff8c0a74137d847c19a6f63b12e9;hb=HEAD >> >> 126 # Enable /MP flag for Visual Studio 2008 and greator >> 132 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} >> /MP${CMAKE_CXX_MP_NUM_PROCESSORS}") >> 133 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} >> /MP${CMAKE_CXX_MP_NUM_PROCESSORS}") > > If you're just going to set it to the number of processors on the machine, > you might as well just use /MP, which means use the number of processors on > the machine. The only time you need a number is when you want to use a > different number of parallel processes, such as only using half your capacity > because something else is using the other half, or leaving one or two cores > open for GUI work. > /mp has no effect on cmake projects since each file is compiled with a separate command... it relies more on msbuild /m:<num> option...
from https://msdn.microsoft.com/en-us/library/bb385193.aspx?f=255&MSPPError=-2147217396 cl /MP7 a.cpp b.cpp c.cpp d.cpp e.cpp but cl is invoked for each source already; multiple sources aren't passed to cl. > -- > > 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 -- 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
