[MPI3 Fortran] Fwd: [Mpi-comments] MPI 3.0: Fortran 2008 interface - issue with the LOGICAL kind
longb at cray.com
Fri Mar 1 15:56:47 CST 2013
On 3/1/13 3:20 PM, N.M. Maclaren wrote:
>> TYPE(MPI_Comm) [checked above]
>> TYPE(MPI_Comm), ASYNCHRONOUS
> See (D) below.
>> D) These are opaque types, and I don't see a problem.
No, they are not opaque. See 2.5.1 Opaque Objects (pages 12-13). These
types are all defined in the MPI spec as
INTEGER :: MPI_VAL
end type MPI_xxxx
where the component is required to be default INTEGER. So, the problems
associated with default INTEGER are still there. The only thing these
types do is provide alternate types for the arguments for the purpose of
type-checking between the calls and the interfaces.
Bill Long longb at cray.com
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