MPI_Info_delete  -   Delete  a  (key,  value) pair from an
       MPI_Info object


SYNOPSIS

       #include <mpi.h>
       int MPI_Info_delete(MPI_Info info, char *key)


INPUT PARAMETER

       key    - null-terminated character string of the index key


INPUT/OUTPUT PARAMETER

       info   - info object (handle)


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  For­
       tran,  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

       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 val­
       ues to be returned (in C and Fortran; this  error  handler
       is  less  useful in with the C++ MPI bindings.  The prede­
       fined 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++ bind­
       ings 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.

              -  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.
       MPI_INFO_KEY
              - This error class is associated with an error code
              that indicates that a null key, empty key,  or  key
              that  was  longer  than MPI_MAX_INFO_KEY characters
              was passed as an argument to an MPI function  where
              it was not allowed.
       MPI_INFO_NOKEY
              - This error class is associated with an error code
              that indicates that a key that was looked up on  an
              MPI_Info object and was not found.
       MPI_ERR_INTERN
              -  An  internal  error  has been detected.  This is
              fatal.  Please send a bug report to the LAM mailing
              list (see http://www.lam-mpi.org/contact.php ).


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 infor­
       mation about each MPI  function  (most  of  which  is  not
       duplicated in these man pages).

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


LOCATION

       infodel.c


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