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#include <mpi.h> int MPI_Address(void *location, MPI_Aint *address)
INCLUDE ’mpif.h’ MPI_ADDRESS(LOCATION, ADDRESS, IERROR) <type> LOCATION (*) INTEGER ADDRESS, IERROR
This deprecated routine is not available in C++.
The address of a location in memory can be found by invoking this function. Returns the (byte) address of location.
Example: Using MPI_Address for an array.
REAL A(100,100)
C users may be tempted to avoid using MPI_Address and rely on the availability of the address operator &. Note, however, that & cast-expression is a pointer, not an address. ANSI C does not require that the value of a pointer (or the pointer cast to int) be the absolute address of the object pointed at although this is commonly the case. Furthermore, referencing may not have a unique definition on machines with a segmented address space. The use of MPI_Address to "reference" C variables guarantees portability to such machines as well.
Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.