[MPI3 Fortran] Straw vote on integers kinds

[Craig Rasmussen]

On Sep 15, 2009, at 9:57 AM, Jeff Squyres wrote:

> On Sep 15, 2009, at 11:40 AM, Craig Rasmussen wrote:
>
>> No intent really.  It is just that the interface is not complete yet.
>> I'm not sure there is a need for real kinds so perhaps  
>> MPI_DOUBLE_KIND
>> should be removed.  Jeff, any place for reals except in MPI users
>> defined types?
>>
>
> The only C double that is passed in the MPI interface is the return  
> value from MPI_WTICK and MPI_WTIME.
>

So let's get rid of MPI_DOUBLE_KIND.  The compiler will do normal type  
conversion for return values so we don't really have the same issue we  
have with procedure arguments.

But what is the correct way to specify the result value?  I believe  
DOUBLE PRECISION is frowned upon.  I haven't been on the committee  
long enough to know the reason.

-craig