[Mpi3-ft] Fault Tolerance & RMA Discussion

[Josh Hursey]

There was no one date/time that worked for everyone, but I chose a time
that worked for most of the respondents. We will meet Thursday, Feb. 2 from
12-1 pm EST/New York to discuss this topic.

We can use the following teleconf information:
  US Toll Free number: 877-801-8130
  Toll number: 1-203-692-8690
  Access Code: 1044056

Thanks,
Josh


On Mon, Jan 23, 2012 at 4:33 PM, Josh Hursey <jjhursey at open-mpi.org> wrote:

> (Cross posted to both the RMA and FT MPI-3 listservs)
>
> During the FT plenary session at the Jan. MPI Forum meeting it was
> recommended that some of the members of the FT group and the RMA group have
> a meeting to hash out the precise details of the FT semantics for the RMA
> chapter. So I would like to facilitate such a discussion, preferability in
> the next week (so we have time to fine tune things before the next forum
> meeting).
>
> In general, we are trying to answer the question "How should RMA
> operations behave when a process failure occurs?" The feeling seemed to be
> that the current approach is ok (invalidating the window, forcing
> recreation/validation), but the statement that the memory exposed in the
> window is 'undefined' seemed excessive. The suggestion was to change the
> wording to something like "Only the memory associated with a window that
> was targeted by an operation that modified it is undefined after process
> failure in the group associated with the window." This lead to a
> considerable amount of debate in the meeting, so it was suggested that we
> take the discussion offline.
>
> Below is a link to a doodle poll to find a good time for a teleconf. If
> you are interested in participating in this discussion, please fill this
> poll out by 2 PM Eastern on Wed. Jan 25 so we can set the date/time.
>    http://www.doodle.com/vd33va5h8iankega
>
> Thanks,
> Josh
>
> --
> Joshua Hursey
> Postdoctoral Research Associate
> Oak Ridge National Laboratory
> http://users.nccs.gov/~jjhursey
>



-- 
Joshua Hursey
Postdoctoral Research Associate
Oak Ridge National Laboratory
http://users.nccs.gov/~jjhursey
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