[Mpi3-rma] Conflicting PUT/GET accesses clarification

[Jeff Hammond]

I think that Pavan's question was motivated by the fact that ARMCI
seems to allow this.  However, just because ARMCI does this does not
make it right.  If a user reported this as a problem with an
MPI-compliant ARMCI implementation, I would tell him or her to write a
better application.  NWChem definitely does not need this.

I suspect that the only reason ARMCI allows this is because they
didn't have a reason to prohibit it, but it requires a séance to know
for sure :-(

Jeff

On Thu, Apr 28, 2011 at 1:08 PM, William Gropp <wgropp at illinois.edu> wrote:
> I agree - I don't think this is an issue for users, including middleware, of
> the RMA, and I would not want it to be different than the send/recv case.
>
> Bill
>
> On Apr 28, 2011, at 7:57 AM, Torsten Hoefler wrote:
>
>> On Thu, Apr 28, 2011 at 12:36:39AM -0500, Pavan Balaji wrote:
>>>
>>> Do these need to be relaxed in MPI-3 as well to make them undefined for
>>> Put/Get? It might be OK to make it undefined in Accumulate as well.
>>
>> I don't think so because it's also erroneous for send/recv.
>>
>> All the Best,
>>  Torsten
>>
>> --
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>> Torsten Hoefler         | Performance Modeling and Simulation Lead
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>
> William Gropp
> Director, Parallel Computing Institute
> Deputy Director for Research
> Institute for Advanced Computing Applications and Technologies
> Paul and Cynthia Saylor Professor of Computer Science
> University of Illinois Urbana-Champaign
>
>
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-- 
Jeff Hammond
Argonne Leadership Computing Facility
jhammond at alcf.anl.gov / (630) 252-5381
http://www.linkedin.com/in/jeffhammond