hello,sorry for cross posting. I've built openmpi 1.4.3 on win32 and generated only 4 release libs: 3,677,712 libmpi.lib   336,466 libmpi_cxx.lib   758,686 libopen-pal.lib 1,307,592 libopen-rte.lib I've installed the boostPro 1.44 mpi library with the installer. But I have link errors: 1>libboost_mpi-vc90-mt-1_44.lib(broadcast.obj) : error LNK2001: unresolved external symbol _MPI_Bcast@20 is boostpro's mpi lib against openmpi or another MPI implementation? regards,