On 27 November 2012 14:47, John Drescher <dresche...@gmail.com> wrote:
> On Tue, Nov 27, 2012 at 9:41 AM, Mateusz Loskot <mate...@loskot.net> > wrote: > > On 27 November 2012 14:23, John Drescher <dresche...@gmail.com> wrote: > >> > >> On Tue, Nov 27, 2012 at 7:21 AM, Michael Jackson > >> <mike.jack...@bluequartz.net> wrote: > >> > > >> > > >> > On Nov 27, 2012, at 12:46 AM, Titus von Boxberg <ti...@v9g.de> wrote: > >> > > >> >> Am 27.11.2012 05:24, schrieb Michael Jackson: > >> >>> That will teach me to hit enter in GMail.. > >> >>> > >> >>> My question is this: What is the magic CMake incantation to get > Visual > >> >>> Studio 2010 to use more than a single processor when compiling my > >> >>> project? > >> >> You could add /MP to CMAKE_C_FLAGS and CMAKE_CXX_FLAGS > >> >> > >> >> Regards > >> >> Titus > >> >> -- > >> >> > >> > > >> > > >> > Thanks for the tip. I'll give it a try. > >> > >> I can tell you that sometimes its hard to get Visual Studio to make > >> good use of your cores (especially if you have 8 or 12 threads) even > >> though multithreded building is on. I believe there are too many parts > >> of the chain that are single threaded only. > > > > > > It's fairly easy to make both, VS and cl.exe, utilise multiple cores, > > even using command line. The problem is that build configurations like > > NMAKE require significant gymnastics: > > > > http://public.kitware.com/pipermail/cmake/2012-September/052116.html > > > > It is easier with VS projects: > > > > http://www.cmake.org/pipermail/cmake/2009-April/028669.html > > My comment was even though it will do multithreaded builds with VS > projects for some projects it will build at very low CPU utilization > for long periods while other projects it maxes out at 100% on all 12 > cores. Right, perhaps complex inter-project dependencies halt the processes. -- Mateusz Loskot, http://mateusz.loskot.net
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