Hello, Here are the problems that I've had trying to get Boost.MPI and MPICH2 to work together (I've had these problems with both boost_1_35_0 and the CVS Boost versions) rbriggs@localhost ~/Desktop/boost_1_35_0 $ ./tools/jam/src/bin.linuxx86_64/bjam --with-mpi --user-config=user-config.jam error: Unable to find file or target named error: '/boost/python//boost_python' error: referred from project at error: 'libs/mpi/build' rbriggs@localhost ~/Desktop/boost_1_35_0 $ I took out the python library build (since I don't need the python libs) but still had problems after that. gcc.link.dll bin.v2/libs/mpi/build/gcc-4.1.2/release/threading-multi/libboost_mpi-gcc41-mt-1_35.so.1.35.0 /usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/../../../../x86_64-pc-linux-gnu/bin/ld: /opt/mpich/lib/libmpich.a(attr_get.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC /opt/mpich/lib/libmpich.a: could not read symbols: Bad value collect2: ld returned 1 exit status I'm unsure of where to fix this at, where should I add this? Thanks, Ransom