For MPI-3.0 there was a ticket for new Fortran and optional status versus MPI_STATUS(ES)_IGNORE with all pros and cons resulting in a clear "not optional" straw vote from the forum. Rolf ----- Original Message -----

From: "N.M. Maclaren" <[email protected]> To: "MPI-WG Fortran working group" <[email protected]> Sent: Wednesday, March 12, 2014 5:44:24 PM Subject: Re: [MPIWG Fortran] Question about an argument of MPI_Testall

On Mar 12 2014, William Gropp wrote:

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On Mar 12, 2014, at 10:30 AM, Jeff Squyres (jsquyres) wrote:

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Rolf R. just reminded me off-list what the real reason is: MPI_STATUSES_IGNORE.

Yes, that makes sense.

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Should this be an optional argument in that case, and eliminate MPI_STATUS_IGNORE and MPI_STATUSES_IGNORE, as was done for the C++ interface?

In my view, yes. I regret the demise of the C++ interface, as I found it cleaner, and this was one of those aspects.

I am not disagreeing with Bill's points, of course - this is a value judgement.

Regards, Nick Maclaren.

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-- Dr. Rolf Rabenseifner . . . . . . . . . .. email [email protected] High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307)