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MPI_Get_library_version(3) man page (version 1.10.0)

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MPI_Get_library_version - Returns a string of the current Open

MPI version


C Syntax

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

Fortran Syntax

INCLUDE ’mpif.h’

C++ Syntax

There is no C++ binding for this function.

Output Parameters

A string containing the Open MPI version (string).

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

Fortran only: Error status (integer).


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.


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.


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


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