[Mpi3-abi] ABI: for languages?

[Sameer Shende]

Jeff,
> But if there are oodles of PMPI-based tools that want an ABI, I would
> encourage them to publicly speak out -- just like anyone who both
> wants and will actually use an ABI should publicly speak out.

        Yes, there are several PMPI-based tools that want an ABI and the
compatibility you describe. We, in the TAU project
[http://tau.uoregon.edu] will appreciate this very much.
        Thanks!
        - Sameer

On Fri, 12 Sep 2008, Jeff Squyres wrote:

> On Sep 12, 2008, at 5:00 PM, Erez Haba wrote:
>
> >>>> is there some other perceived gain beyond MPI-based ISV apps
> >>>> being able to conveniently ship a single binary?
> >
> > Yes there is.
> > We discussed one example during the MPI conference. There is a great
> > benefit for tools, especially for tools that are using the PMPI
> > interface.
> > Many implementers ship their mpi implementation as a dynamically
> > loaded binary; vendors like Microsoft, Intel HP and others. As such
> > it is more difficult for tools to plugin between the application and
> > the mpi implementation; it is not impossible but still more difficult.
>
> I guess it depends on the type of tool, no?  The parallel debuggers
> have gotten along fine without an ABI because they don't hook in at
> the MPI API layer.  Alternate mechanisms exist for them to find out
> the exact value of MPI_COMM_WORLD (for example).  Expansions of this
> concept are just being introduced into MPI-3.0 for other kinds of
> tools, too.
>
> But if there are oodles of PMPI-based tools that want an ABI, I would
> encourage them to publicly speak out -- just like anyone who both
> wants and will actually use an ABI should publicly speak out.
>
> > Having an API allows MPI implementers, ISV's, tools developers and
> > end user to verify the application with a tool like ISP (University
> > of Utha), without the special need from any of the other parties.
>
> I think you mean ABI, right?
>
> --
> Jeff Squyres
> Cisco Systems
>
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