[Mpi3-rma] nested locks
james.dinan at gmail.com
Mon Aug 19 15:13:43 CDT 2013
With apologies if I have misunderstood your question. To clarify, the
example Rajeev gave was forbidden in MPI-2. One could not have concurrent
passive target access epochs, even if they accessed different targets. It
is allowed in MPI-3.
On Mon, Aug 19, 2013 at 3:52 PM, Jeff Hammond <jeff.science at gmail.com>wrote:
> you mean lock at those ranks, not by those ranks? those aren't
> conflicting so i don't see the issue. maybe i am a dolt though.
> On Mon, Aug 19, 2013 at 2:44 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."
>> mpi3-rma mailing list
>> mpi3-rma at lists.mpi-forum.org
> Jeff Hammond
> jeff.science at gmail.com
> mpi3-rma mailing list
> mpi3-rma at lists.mpi-forum.org
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