[Mpi3-abi] For the April MPI Forum Meeting

[Jeff Brown]

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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