NAME

       MPI_Comm_get_info - Retrieves active communicator info hints

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Comm_get_info(MPI_Comm comm, MPI_Info *info_used)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_COMM_GET_INFO(COMM, INFO_USED, IERROR)
            INTEGER   COMM, INFO_USED, IERROR

INPUT PARAMETERS

       comm      Communicator from which to receive active info hints

OUTPUT PARAMETERS

       info_used New info object returned with all active hints on this communicator.

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Comm_get_info  returns  a  new  info  object  containing the hints of the communicator
       associated with comm.  The current setting of  all  hints  actually  used  by  the  system
       related  to  this communicator is returned in info_used.  If no such hints exist, a handle
       to a newly created info object is returned that contains no key/value pair.  The  user  is
       responsible for freeing info_used via MPI_Info_free.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran routines in the last argument.

       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.

SEE ALSO

       MPI_Comm_get_info, MPI_Info_free