I'm no specialist on this, but I want that you look at: - MPI-2.2 MPI_INIT (..., char ***argv MPI_INIT_THREAD(..., char *((*argv)[]) - Bill's preference char (*(*(argv_p[]))) - current MPI-3.0 (r1486) MPI_INIT and MPI_INI_THREAD char *((*argv)[]) I would say, if there is no guaranteed backward compatible change, I would prefere to stay with MPI-2.2 declarations as they are. This is only a formal answer after detecting that Bill's position is not identical to one of the existing solutions. Rolf ----- Original Message -----

From: "William Gropp" <[email protected]> To: "Main MPI Forum mailing list" <[email protected]> Sent: Wednesday, July 25, 2012 7:08:04 PM Subject: Re: [Mpi-forum] Compile problems with examples in MPI Standard We need to make an explicit decision on this. Shall we change the second argument of MPI_Init and MPI_Init_thread to be char *** ?

Bill

William Gropp Director, Parallel Computing Institute Deputy Director for Research Institute for Advanced Computing Applications and Technologies Paul and Cynthia Saylor Professor of Computer Science University of Illinois Urbana-Champaign

On Jul 24, 2012, at 11:42 AM, Jeff Squyres wrote:

...

On Jul 24, 2012, at 12:21 PM, William Gropp wrote:

...

Clearly, we need to change the prototype for MPI_Init and MPI_Init_thread. The best choice is probably back to the original:

char ***argv_p

since that's what it is (complete with a rationale for why it isn't what we're currently using). I prefer this to the char (*(*(argv_p[]))), ...

Oh the irony!! :-)

-- Jeff Squyres [email protected] For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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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: Allmandring 30)