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NAME

       MPI_Comm_get_name -  Get the name associated with a communicator

SYNOPSIS

       #include <mpi.h>
       int
       MPI_Comm_get_name(MPI_Comm comm, char *name, int *length)

INPUT PARAMETERS

       comm   - Communicator

OUTPUT PARAMETERS

       name   - Name of the communicator
       length - Integer length of the resulting name

NOTES

       This   function  returns  the  name  of  a  communicator  that  was  previously  set  with
       MPI_Comm_set_name .  If a name was not previously  associated  with  a  communicator,  the
       returned string will be empty and length will be 0.  The retuned name will be a maximum of
       MPI_MAX_OBJECT_NAME characters long.

ERRORS

       If an error occurs in an MPI function, the current MPI error handler is called  to  handle
       it.   By default, this error handler aborts the MPI job.  The error handler may be changed
       with MPI_Errhandler_set ; the predefined error handler MPI_ERRORS_RETURN may  be  used  to
       cause  error values to be returned (in C and Fortran; this error handler is less useful in
       with the C++ MPI bindings.   The  predefined  error  handler  MPI::ERRORS_THROW_EXCEPTIONS
       should  be  used in C++ if the error value needs to be recovered).  Note that MPI does not
       guarantee that an MPI program can continue past an error.

       All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value;  C  routines  as
       the value of the function and Fortran routines in the last argument.  The C++ bindings for
       MPI do not return error  values;  instead,  error  values  are  communicated  by  throwing
       exceptions of type MPI::Exception (but not by default).  Exceptions are only thrown if the
       error value is not MPI::SUCCESS .

       Note that if the MPI::ERRORS_RETURN handler is set in C++, while MPI functions will return
       upon an error, there will be no way to recover what the actual error value was.
       MPI_SUCCESS
              - No error; MPI routine completed successfully.
       MPI_ERR_COMM
              -  Invalid  communicator.   A  common error is to use a null communicator in a call
              (not even allowed in MPI_Comm_rank ).
       MPI_ERR_ARG
              - Invalid argument.  Some argument is invalid and is not identified by  a  specific
              error class.  This is typically a NULL pointer or other such error.

SEE ALSO

       MPI_Comm_set_name,       MPI_Type_get_name,      MPI_Type_set_name,      MPI_Win_get_name,
       MPI_Win_set_name

MORE INFORMATION

       For more information, please see the official MPI Forum web site, which contains the  text
       of both the MPI-1 and MPI-2 standards.  These documents contain detailed information about
       each MPI function (most of which is not duplicated in these man pages).

       http://www.mpi-forum.org/

LOCATION

       cgetname.c