[Mpi3-abi] For the April MPI Forum Meeting

[Jeff Squyres]

I will unfortunately be unable to attend this teleconference (I have a  
conflict).  I'll comment on the slides, though.

On Apr 21, 2008, at 3:42 PM, Jeff Brown wrote:

> all,
>
> I scheduled a telecon to discuss status and get somewhat organized
> for the meeting:
>
> Thursday April 24, 10:00 MDT
> local number:      606-1201(6-1201)
> toll free number:  888 343-0702.
>
> I'll send out some slides for the 5 minute briefing for the group.
>
> I'm having a hard time finding time to devote to this, but I'll have
> a cut at the OpenMPI and LAMPI analysis prior to the telecon.  We
> need someone to look at MPICH, and the vendor implementations need to
> be posted.
>
> Jeff
>
>
>
> At 10:03 AM 4/16/2008, Jeff Brown wrote:
> >Yes, it's time to put some cycles toward this.  Let's start
> >populating the matrix and have a telecon toward the end of next
> >week.  I'll schedule a WG working session at the meeting.
> >
> >I'll take a look at OpenMPI and LAMPI, the two primary MPI
> >implementations we use at LANL, and post to the wiki by the end of
> >the week.  Others, please do the same for your MPI implementation
> >(especially the vendors).  Overlap is OK.
> >
> >I'll send out specifics on the telecon.  Let's shoot for Thursday
> >April 24, 9:00 A.M. MST.
> >
> >Jeff
> >
> >At 09:51 AM 4/16/2008, Narasimhan, Kannan wrote:
> > >Folks,
> > >
> > >Are we planning on a WG update to report at the April 28-30 Forum
> > >meeting? We have started the process of identifying the mpi.h
> > >differences, but I dont think we have synthesized the data yet, or
> > >come to any conclusions/next steps... Or did I miss something here?
> > >
> > >Thanx!
> > >Kannan
> > >
> > >-----Original Message-----
> > >From: mpi3-abi-bounces_at_[hidden]
> > >[mailto:mpi3-abi-bounces_at_[hidden]] On Behalf Of Edric  
> Ellis
> > >Sent: Monday, March 17, 2008 4:18 AM
> > >To: MPI 3.0 ABI working group
> > >Subject: Re: [Mpi3-abi] Meeting notes from 10th March
> > >
> > >
> > >I'm not sure how best to express this, but there are a couple of
> > >things that occur to me that might be important:
> > >
> > >1. The size of the handle types (cf. size of a pointer perhaps?)
> > >
> > >2. should we add some sort of table describing the current  
> situation
> > >as to how applications pick up the value of e.g. MPI_COMM_WORLD?  
> E.g.
> > >MPICH2 uses "#define MPI_COMM_WORLD 0x44000000", so that value is
> > >burned into the binary; whereas OpenMPI uses extern pointers - i.e.
> > >ompi_mpi_comm_world is in the initialized data section of  
> libmpi.so,
> > >and the value resolved at (dynamic) link time.
> > >
> > >Cheers,
> > >
> > >Edric.
> > >
> > > > -----Original Message-----
> > > > From: mpi3-abi-bounces_at_[hidden]
> > > [<mailto:mpi3-abi->mailto:mpi3-abi-
> > > > bounces_at_[hidden]] On Behalf Of Jeff Brown
> > > > Sent: Thursday, March 13, 2008 10:11 PM
> > > > To: MPI 3.0 ABI working group; mpi3-abi_at_[hidden]
> > > > Subject: Re: [Mpi3-abi] Meeting notes from 10th March
> > > >
> > > > I propose a way we can make progress ...
> > > >
> > > > Let's start populating a matrix (excel spreadsheet) with a  
> column for
> > > > each MPI implementation, and rows for the various MPI datatypes,
> > > > constants, etc. where the internal implementations varys.   
> I'll kick
> > > > it off for OpenMPI and send out.
> > > >
> > > > The last column of the matrix can be "ABI" where we propose a  
> common
> > > > approach across the implementations.
> > > >
> > > > A couple of driving principles:
> > > > 1. the ABI solution shouldn't negatively impact quality of
> > >implementation
> > > > 2. minimize platform specific solutions
> > > >
> > > > I'd like to see if we can produce a single ABI that spans  
> platforms.
> > > >
> > > > comments?
> > > >
> > > > Jeff
> > > >
> > > >
> > > > _______________________________________________
> > > > mpi3-abi mailing list
> > > > mpi3-abi_at_[hidden]
> > > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-abi
> > >
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> >
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-- 
Jeff Squyres
Cisco Systems