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: [email protected] [[email protected]] on behalf of Jim Dinan [[email protected]] Sent: Monday, December 03, 2012 4:07 PM To: [email protected] 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 <[email protected]> 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

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