[mpiwg-hybridpm] Hybrid WG telecon tomorrow

Dan Holmes dholmes at staffmail.ed.ac.uk
Thu Jul 17 02:32:23 CDT 2014

Hi Jim,

I've just read the MPI_COMM_CREATE text in MPI-3.0 and you are correct 
that the order of statements there is also not ideal.

I'm not certain of where the re-read threshold is - that'll be a Forum 
decision on the day, I guess. Moving a couple of sentences, without 
changing their content, doesn't seem like a big change to me. Especially 
when the consequence of the re-positioning is to achieve syntactically 
what everyone is supposed to assume from the previous ordering. I'll 
leave it up to you! I certainly don't want to make anyone's life 
difficult or delay the approval process for end-points.

I don't suggest that we try to change the text for MPI_COMM_CREATE, 
either as part of this ticket or separately.


On 16/07/2014 20:28, Jim Dinan wrote:
> Hi Dan,
> Thanks for the thorough feedback.  I applied these changes and attached an
> updated document.  I'm trying to keep the changes we make right now as
> small as possible so that we can have a first vote in Japan.  The change
> below is reasonable, but I'm concerned that it might push us over the
> re-read threshold.
> On Tue, Jul 1, 2014 at 5:34 AM, Daniel Holmes <dholmes at epcc.ed.ac.uk> wrote:
>> The statements about cached information, valid values for my_num_ep, and
>> the condition for the error code/class all apply to the inter-communicator
>> case as well as the intra-communicator case. Should this be made clearer by
>> moving that text out of the intra-communicator paragraph and after the
>> inter-communicator paragraph?
>> If parent_comm is an intracommunicator ... sum of the values of my_num_ep
>> on all calling processes. If parent_comm is an intercommunicator ...
>> MPI_COMM_NULL is returned in all entries of new_comm_handles.
>> <p>No cached information ... this function will return MPI_ERR_ENDPOINTS
>> at all processes.
> What are your thoughts?  I believe that the structure we have for this text
> was inherited from the MPI_Comm_create text.
>   ~Jim.

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