I'm testing out Boost MPI on Windows following the description in http://www.generic-programming.org/~dgregor/boost.mpi/doc/mpi/getting_starte... I've installed MPICH 1.2.5 (the only one of the tested MPI implementations that works with Windows) in C:\Program Files\MPICH; have checked out boost from the CVS repository; and have bjam 3.1.13. bjam --with-mpi then complains about not finding MPI. For example, I tried adding to user-config.jam the following: using mpi : : "C:/Program Files/MPICH/SDK/Lib/mpich.lib" ; Running bjam --with-mpi --debug-configuration then gives: warning: toolset mpi initialization: can't find tool mpirun ... error: 'C:/Program Files/MPICH/SDK/Lib/mpich.lib' is not a valid for property specification Unfortunately I can't figure out how to interpret the following (from the documentation): If your MPI implementation does not have a wrapper compiler, or the MPI auto-detection code does not work with your MPI's wrapper compiler, you can pass MPI-related options explicitly via the second parameter to the mpi module: using mpi : : <find-shared-library>lammpio <find-shared-library>lammpi++ <find-shared-library>mpi <find-shared-library>lam <find-shared-library>dl ; What are the "MPI-related options"? If anyone has succeeded in getting Boost MPI working on Windows (with Visual Studio .NET) and with any MPI implementation, I'd appreciate hearing how they configured it. Thanks! -- Charles Karney <ckarney@sarnoff.com> Sarnoff Corporation, Princeton, NJ 08543-5300 URL: http://charles.karney.info Tel: +1 609 734 2312 Fax: +1 609 734 2662