BOOST_MPI_HAS_MEMORY_ALLOCATION — Define this macro to avoid expensice MPI_Pack/Unpack calls on homogeneous machines.
Determine if the MPI implementation has support for memory allocation. This macro will be defined when the underlying MPI implementation has support for the MPI-2 memory allocation routines
MPI_Free_mem. When defined, the
allocator class template will provide Standard Library-compliant access to these memory-allocation routines.