Some MPI procedures use address arguments that represent an absolute
address in the calling program.
The datatype of such an argument
is MPI_Aint in C, MPI::Aint in C++ and INTEGER
(KIND= MPI_ADDRESS_KIND) in Fortran.
These types must have the same width and encode
address values in the same manner such that address values in one
language may be passed directly to another language without
There is the MPI constant MPI_BOTTOM to indicate
the start of the address range.
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(Unofficial) MPI-2.2 of September 4, 2009
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