[Mpi3-hybridpm] Hybrid WG meeting at the Forum

[Douglas Miller]

Well, I was thinking we did not need to restrict MPI_HELPER_* to only
MPI_THREAD_MULTIPLE, as I think these routines are easily made thread safe
independently of the rest of MPI. I would like to see these be more-widely
usable.


_______________________________________________
Douglas Miller                  BlueGene Messaging Development
IBM Corp., Rochester, MN USA                     Bldg 030-2 A410
dougmill at us.ibm.com               Douglas Miller/Rochester/IBM


                                                                           
             Pavan Balaji                                                  
             <balaji at mcs.anl.g                                             
             ov>                                                        To 
                                       mpi3-hybridpm at lists.mpi-forum.org   
             12/06/2010 05:49                                           cc 
             PM                        Douglas Miller/Rochester/IBM at IBMUS  
                                                                   Subject 
                                       Re: [Mpi3-hybridpm] Hybrid WG       
                                       meeting at the Forum                
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hi Doug,

[...snip...]

> A) I don't see mention of the exception to MPI threading rules for the
> MPI_HELPER_* calls. Was that intentionally removed? Did I forget a
> discussion of that? I was thinking we need to state to implementers that
> MPI_HELPER_* must be thread safe (in all modes except MPI_THREAD_SINGLE)
> and to users that these calls may be used by any/all threads in any mode
> (except MPI_THREAD_SINGLE). Do we need to discuss this more?

We decided to drop at the Forum (3-4 Forums back, or whenever we had the
plenary session). I had accidentally added it in the first draft, but
removed it since.

Do you mean to say that you do want the modified threading rules back?

[...snip...]

  -- Pavan

--
Pavan Balaji
http://www.mcs.anl.gov/~balaji
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