[Mpi3-rma] missing RMA info keys

[Hubert Ritzdorf]

Hi,

I think that the info argument "same_size" is defined only for 
MPI_Win_Allocate.  It's defined in the context of this function
and it's explicitly an additional info relative to the info keys
of  MPI_Win_create.

MPI_Win_allocate is not mentioned in the list of Page 409 Line 48
and "same_size" doesn't make sense for MPI_Win_allocate_shared.

MPI_Win_create_dynamic specifies only the info keys of MPI_Win_create
(Page 412 Line 22-23)
and "same_size" doesn't make sense since MPI_Win_attach is not collective. 

Hubert

 
________________________________________
From: mpi3-rma-bounces at lists.mpi-forum.org [mpi3-rma-bounces at lists.mpi-forum.org] on behalf of Jim Dinan [dinan at mcs.anl.gov]
Sent: Monday, December 03, 2012 4:07 PM
To: mpi3-rma at lists.mpi-forum.org
Subject: Re: [Mpi3-rma] missing RMA info keys

Hi Jeff,

I haven't looked at the text in a while -- alloc_shared_noncontig only
makes sense in a call to MPI_Win_allocate_shared().  The other info keys
were intended to be valid for all communicator creation routines.  If
this isn't clear, then we should definitely correct it.  I created a
ticket to make sure we remember to look at this:

https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/346

  ~Jim.

On 12/1/12 8:50 PM, Jeff Hammond wrote:
> It is not clear if these info keys are predefined for MPI_WIN_ALLOCATE
> or MPI_WIN_CREATE_DYNAMIC.
>
> Does the following text mean that the info keys for MPI_WIN_ALLOCATE
> are inclusive of those for MPI_WIN_CREATE?  It really does not seem
> that way to me.
>
> ========================
> The info argument can be used to specify hints similar to the info
> argument for MPI_WIN_CREATE and MPI_ALLOC_MEM. The following info key
> is predefined:
>
> same_size — if set to true, then the implementation may assume that
> the argument size is identical on all processes.
> ========================
>
> If the keys "accumulate_ordering, accumulate_ops, same_size,
> alloc_shared_noncontig" are not valid for MPI_WIN_ALLOCATE and/or
> MPI_WIN_CREATE_DYNAMIC already, they should be this task should be
> added to the TODO list for MPI 3.1.
>
> Jeff
>
> On Tue, Nov 6, 2012 at 4:41 AM, Hubert Ritzdorf
> <Hubert.Ritzdorf at emea.nec.com> wrote:
>> Hi,
>>
>> the new RMA info keys "accumulate_ordering, accumulate_ops, same_size,
>> alloc_shared_noncontig"
>> and the corresponding values are missing in Sections A.1.5 and A.1.6 (Pages
>> 683 and 684).
>>
>> Hubert
>>
>> _______________________________________________
>> mpi3-rma mailing list
>> mpi3-rma at lists.mpi-forum.org
>> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma
>
>
>
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