Date: Thu, 17 Jun 1999 15:55:17 -0500
From: Rajeev Thakur <thakur@XXXXXXXXXXX>
To: linda@XXXXXXXXXXX
CC: mpi-core@XXXXXXXXXXX,bcarnes@XXXXXXXX,hedges1@XXXXXXXX,In-reply-to: <199906172037.NAA24257@XXXXXXXXXXX>
	on Thu, 17 Jun 1999 13:37:03 -0700 (PDT))
Subject: Re: Request for interpretation
Sender: owner-mpi-core@XXXXXXXXXXX
Precedence: bulk
X-UIDL: ed6b490180ddc9ebbc3291dcf178c19f


>   I have a question about the interpretation of the wording in Section 4.10, 
>   Info objects.  The first paragraph describes these objects and indicates
>   that they are used by many of the routines in MPI-2.  So how do we 
>   interpret the first sentence of the second paragraph:
>
>	   If a function does not recognize a key, it will ignore it, unless
>	   otherwise specified.
>
>   Does this mean that MPI_INFO_SET may ignore (i.e., refuse to add) a key
>   if the key given is not recognized by any of the MPI-2 functions in this
>   implementation?
>
>   Or does it mean that an MPI-2 function that takes an Info object as an
>   argument (e.g, MPI_FILE_OPEN or MPI_COMM_SPAWN) will ignore any key in
>   the object that is not recognized for this function in this implementation?

I hope it's the latter because it makes the info object more useful.
For example, higher-level libraries can use MPI_Info as their hints
mechanism rather than having to reinvent something.

Rajeev