[Mpi3-rma] MPI_Fetch_and_op and predefined datatypes

[Jim Dinan]

Did we also intend to include pair types for F&Op?  They are allowed in 
reductions.

  ~Jim.

On 10/26/12 4:07 PM, Torsten Hoefler wrote:
> On Fri, Oct 26, 2012 at 04:22:02PM -0500, Jeff Hammond wrote:
>> I don't want to wait for 3.1.  Are we seriously going to require
>> MPI_WCHAR support in F&Op to be MPI-3 compliant?  That makes no sense.
> I think the intent of "Any of the predefined operations for MPI_REDUCE,
> as well as MPI_NO_OP or MPI_REPLACE, can be specified as op;
> user-defined functions cannot be used." is clear. One could even dream
> up a use-case for MPI_WCHAR if one wants to emulate an atomic read
> (using MPI_NO_OP).
>
> I will not vote against an errata if you want to propose text and
> initiate the process.
>
> Best,
>    Torsten
>