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## Macro BOOST_MPI_HAS_MEMORY_ALLOCATION

BOOST_MPI_HAS_MEMORY_ALLOCATION — Define this macro to avoid expensice MPI_Pack/Unpack calls on homogeneous machines.

## Synopsis

    // In header: <boost/mpi/config.hpp>

    BOOST_MPI_HAS_MEMORY_ALLOCATION

## Description

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_Alloc_mem` and `MPI_Free_mem`. When defined, the `allocator` class template will provide Standard Library-compliant access to these memory-allocation routines.