SEEK_SET is #defined but must not be for the C++ binding of MPI
The error-
c:/Program Files/MPICH2/include/mpicxx.h(26): fatal error C1189: #error : "SEEK_SET is #defined but must not be for the C++ binding of MPI"
compiling your MPI application occurs because of MPI - 2 bug. This is because of SET_SEE which is defined in both mpi.h and stdio.h. The work around is to add
-DMPICH_IGNORE_CXX_SEEK
to a command line. This can be done by following the path : project properties - C/C++ - Command Line;