[Mpi-22] Higher-level languages proposal

[Supalov, Alexander]

Dear Jeff,

Unfortunately, I won't be in Chicago, so we should rather discuss this
here. I talked to Torsten last time about this extension. As far as I
can remember, the main purpose of this extension is to make sure that
the thread that called the MPI_Probe also calls the MPI_Recv and gets
the message matched by the aforementioned MPI_Probe.

If so, the main problem here is not the matching. The main problem is
that one cannot address threads in MPI. If we fix that, the proposed
extension with the message handle and such will become superfluous.

See what I mean?

Best regards.

Alexander 

-----Original Message-----
From: mpi-22-bounces_at_[hidden]
[mailto:mpi-22-bounces_at_[hidden]] On Behalf Of Jeff Squyres
Sent: Monday, October 13, 2008 11:48 PM
To: MPI 2.2
Subject: Re: [Mpi-22] Higher-level languages proposal

On Oct 13, 2008, at 10:46 AM, Supalov, Alexander wrote:

> Thanks. The 2.1.1, which was presented last time, in my opinion does  
> not
> seem to solve the right problem. Instead of defining a way for
> unambiguous addressing of the threads in MPI, which would eliminate  
> the
> MPI_Probe/Recv ambiguity and many other issues, it attempts to add yet
> another concept (this time, a message id) in the current situation  
> where
> any thread can do what they please.

I'm not quite sure I understand your proposal.

<... after typing out a lengthy/rambling discourse that made very  
little sense and was fraught with questions and ambiguities :-) ...>

Let's discuss this in Chicago; Rich has allocated 5-7pm on Monday for  
discussion of this proposal.  These are exactly the kinds of larger  
issues that we want to raise via this proposal.


-- 
Jeff Squyres
Cisco Systems
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