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MPI_Info_set(3)                       MPI                      MPI_Info_set(3)


NAME

       MPI_Info_set -  Adds a (key,value) pair to info


SYNOPSIS

       int MPI_Info_set( MPI_Info info, MPICH2_CONST char *key, MPICH2_CONST char *value )


INPUT PARAMETERS

       info   - info object (handle)
       key    - key (string)
       value  - value (string)


THREAD AND INTERRUPT SAFETY

       The user is responsible for ensuring that multiple threads do not try
       to update the same MPI object from different threads.  This routine
       should not be used from within a signal handler.

       The MPI standard defined a thread-safe interface but this does not mean
       that all routines may be called without any thread locks.  For example,
       two threads must not attempt to change the contents of the same
       MPI_Info object concurrently.  The user is responsible in this case for
       using some mechanism, such as thread locks, to ensure that only one
       thread at a time makes use of this routine.


NOTES FOR FORTRAN

       All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
       an additional argument ierr at the end of the argument list.  ierr is
       an integer and has the same meaning as the return value of the routine
       in C.  In Fortran, MPI routines are subroutines, and are invoked with
       the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
       Fortran.


ERRORS

       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.  Before the value is returned, the current MPI error
       handler is called.  By default, this error handler aborts the MPI job.
       The error handler may be changed with MPI_Comm_set_errhandler (for
       communicators), MPI_File_set_errhandler (for files), and
       MPI_Win_set_errhandler (for RMA windows).  The MPI-1 routine
       MPI_Errhandler_set may be used but its use is deprecated.  The
       predefined error handler MPI_ERRORS_RETURN may be used to cause error
       values to be returned.  Note that MPI does not guarentee that an MPI
       program can continue past an error; however, MPI implementations will
       attempt to continue whenever possible.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.

       MPI_ERR_INFO_KEY
              - Invalid or null key string for info.
       MPI_ERR_INFO_VALUE
              - Invalid or null value string for info
       MPI_ERR_INTERN
              - This error is returned when some part of the MPICH
              implementation is unable to acquire memory.


LOCATION

       src/util/info/info_set.c

                                   9/20/2012                   MPI_Info_set(3)

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