NAME

       MPI_Get_library_version - Returns a string of the current Open MPI version

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Get_library_version(char *version, int *resultlen)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_GET_LIBRARY_VERSION(VERSION, RESULTLEN, IERROR)
            CHARACTER*(*)  NAME
            INTEGER RESULTLEN, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Get_library_version(version, resulten, ierror)
            CHARACTER(LEN=MPI_MAX_LIBRARY_VERSION_STRING), INTENT(OUT) :: version
            INTEGER, INTENT(OUT) :: resultlen
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       There is no C++ binding for this function.

OUTPUT PARAMETERS

       version   A string containing the Open MPI version (string).

       resultlen Length (in characters) of result returned in version (integer).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       This  routine  returns  a  string representing the version of the MPI library. The version
       argument is a character string for maximum flexibility.

       The number of characters actually written is returned in the output  argument,  resultlen.
       In  C, a '\0' character is additionally stored at version[resultlen]. The resultlen cannot
       be larger than (MPI_MAX_LIBRARY_VERSION_STRING - 1). In Fortran, version is padded on  the
       right    with    blank    characters.    The    resultlen    cannot    be    larger   than
       MPI_MAX_LIBRARY_VERSION_STRING.

NOTE

       The version  string  that  is  passed  must  be  at  least  MPI_MAX_LIBRARY_VERSION_STRING
       characters long.

       MPI_Get_library_version is one of the few functions that can be called before MPI_Init and
       after MPI_Finalize.

       MPI_Get_library_version is an MPI-3 function and has no C++ binding.

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_Get_version