Dear all, sorry, I let myself get thrown off by the daylight savings time changes in US and Europe again, so I will not make it in time today. :( I wanted to add some feedback to ticket #383 (the variable info consistency). I am not quite satisfied with the current wording as an advice to implementers, as it still does not give any guarantee to tools as to what to expect from a query and how to process the information. What do you think of the following idea: Let's attach a "realm" to a certain variable information. How a realm is represented would still be discussed, but for the sake of the discussion assume it is represented as an MPI_Group containing all the ranks that share the same indexing. An implementation that chooses to be super-individualistic and promise nothing can do so by using the "self-group" as the realm for any variable information. An implementation that wants to help a tool to unify information automatically, can use larger realms up to the point where every information is in a single global realm. Example: The DEEP project [1], which investigates a mixed-network accelerator cluster having a pure-infiniband, a pure-extoll part, and a mixed-infiniband-extoll part could choose to create three different realms, guaranteeing that the information within each realm matches across processes. This idea is very rough-cut, but would something along this line work for everyone? It should still allow implementations not to give any guarantee, but at least enables tools to query the level of consistency given by an implementation and complain accordingly. What are your ideas on this? Cheers, Marc-Andre [1] http://www.deep-project.eu/ On 13.11.13 22:54, Kathryn Mohror wrote:

Hi all,

As a reminder, we have our regular telecon tomorrow at 11am EST and 8am PST. The call in information is here:

https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Tools

Agenda items: - Figure out what time we need at the forum meeting, tickets to vote on, etc. - Tickets #377, #384, #383, #400 (#392) - Discuss the "multiple device" support issue further

Talk to you soon! Kathryn

______________________________________________________________ Kathryn Mohror, [email protected] <mailto:[email protected]>, http://people.llnl.gov/mohror1 CASC @ Lawrence Livermore National Laboratory, Livermore, CA, USA

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

-- Marc-Andre Hermanns German Research School for Simulation Sciences GmbH c/o Laboratory for Parallel Programming 52062 Aachen | Germany Tel +49 241 80 99753 Fax +49 241 80 6 99753 Web www.grs-sim.de Members: Forschungszentrum Jülich GmbH | RWTH Aachen University Registered in the commercial register of the local court of Düren (Amtsgericht Düren) under registration number HRB 5268 Registered office: Jülich Executive board: Prof. Marek Behr, Ph.D | Prof. Dr. Sebastian M. Schmidt