[mpich-devel] datatype accessors with uncommited datatypes

[Lisandro Dalcin]

On 27 December 2012 16:01, Pavan Balaji <balaji at mcs.anl.gov> wrote:
>
> On 12/27/2012 12:56 PM US Central Time, Jeff Hammond wrote:
>> I don't disagree with your interpretation, but I am always hesitant to
>> assert my understanding of the text in the absence of input from those
>> who were present when it was written.
>>
>> I'll file an MPI Forum ticket and see what happens.
>
> This does look like something that's ill-defined in the standard.  A
> ticket to address in MPI-3.1 is a good idea.
>
> Lisandro: till this is fixed in the standard, the workaround will be to
> commit all datatypes.
>

So, in MPICH 3.x,  given an uncommited datatype, MPI_Type_size() will
succeed, but MPI_Type_size_x() will fail ?

--
Lisandro Dalcin
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