[Mpi3-rma] nested locks

[Jim Dinan]

We removed the sentence that forbade this from MPI 2.2, page 348, line 31:
"Only one target window can be accessed during that epoch with win."

 ~Jim.


On Mon, Aug 19, 2013 at 3:44 PM, Rajeev Thakur <thakur at mcs.anl.gov> wrote:

> Did we make any change in MPI 3.0 to allow nesting of MPI_Win_lock calls?
> For example,
>
> Win_lock(rank 1)
>     Win_lock(rank 2)
>
>     Win_unlock(rank 2)
> Win_unlock(rank 1)
>
> I can't find the text we added or deleted to allow this.
>
> But I do see text that disallows this:
> pg 437, ln 28: "Distinct access epochs for win at the same process must be
> disjoint."
>
> Rajeev
>
>
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