I think that this is not forbidden by ARMCI, but the result of such an operation is undefined. The only situation in which GA would generate a call to ARMCI like this is when the programmer has messed something up. And I think that the only place where the programmer would have this opportunity to mess up is with the leading dimensions on the local buffer. ~Jim. On 04/28/2011 03:00 PM, Jeff Hammond wrote:

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 s�ance to know for sure :-(

Jeff

On Thu, Apr 28, 2011 at 1:08 PM, William Gropp<[email protected]> 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

-- bash$ :(){ :|:&};: --------------------- http://www.unixer.de/ ----- Torsten Hoefler | Performance Modeling and Simulation Lead Blue Waters Directorate | University of Illinois (UIUC) 1205 W Clark Street | Urbana, IL, 61801 NCSA Building | +01 (217) 244-7736 _______________________________________________ mpi3-rma mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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

_______________________________________________ mpi3-rma mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma