On Mar 17, 2008, at 6:05 PM, Aleksandar Donev wrote:
> In C, would you make the C Interface:
>
> void MPI_Send(..., struct MPI_Comm comm,...)
This.
> or do you want
>
> void MPI_Send(..., struct MPI_Comm *comm,...)
Not this.
In C, the type of MPI_Comm is not defined. For example, Open MPI and
HP MPI use pointers (natively), but Intel MPI, MPICH, and others use
int's.
> Either one of these could be translated into an *equivalent* Fortran
> interface, where by equivalence I mean full binary compatibility.
Yes, the ABI problem really stems from the C interface. :-\
--
Jeff Squyres
Cisco Systems
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