Am 13.03.2010 um 17:03 schrieb Gevorg Voskanyan:

Kraus Philipp wrote:

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Hello,

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I work for a long time again with C + + and some numerical methods must be implemented with the help of the boost, among other things, with MPI. Does the Booster precompiler flag that I can verify that the boost is compiled with MPI support like:

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#if defined(BOOST_WITH_MPI) #endif

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Thanks for help

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Phil

I am pretty sure that cannot be achieved without some special support from the build system. What build system are you using to build your application with?

I use scons for building my project, but I can't check for the open- mpi libs, because under MS systems you link the the boost against ms-mpi. My project has some parallel instructions which use the boost mpi components, but they arn't be necessary, so the don't need be compiled if there isn't the mpi support in the boost Thanks Phil

Am 13.03.2010 um 17:21 schrieb Matthieu Brucher:

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I use scons for building my project, but I can't check for the open- mpi libs, because under MS systems you link the the boost against ms-mpi.

My project has some parallel instructions which use the boost mpi components, but they arn't be necessary, so the don't need be compiled if there isn't the mpi support in the boost

Thanks

Phil

Hi,

You can always check if the library is available. Without it, you won't have an MPI-enabled Boost.

Wich libaray? There are many MPI libs, MPICH2, MS MPI, Open-MPI. The Boost work with all libs and my project use only the boost. The project file are linked against the boost and the boost link against the MPI lib, but at compile time I don't know which lib is used. I need a flag at preprocessor time which shows the mpi support, because I run into compile and link error if the is no mpi support enabled. I include the boost/mpi.hpp but if there is no support I don't need include the hpp Phil