[Mpi-22] Higher-level languages proposal

[Jeff Squyres]

Doug Gregor did 98% of the work on this proposal, but it will likely  
be Torsten or I presenting this proposal next week in Chicago (5-7pm  
Monday).

The short version of the attached text is that we propose the following:

- add some extensions to MPI to allow higher-level languages to build  
their own MPI bindings
- if all that works out nicely, deprecate and eventually remove the  
official MPI C++ bindings

Don't let the proposal name fool you -- the features that we're  
proposing are inspired by letting higher-level language build their  
own bindings, but some of the issues (e.g., new MPI_BLOB datatype) are  
fairly wide-reaching.  We haven't yet put a "2.2" or "3.0" label on  
this proposal (which is why I have not entered it in the MPI-2.2  
ticket system); I can see valid arguments for both sides.  More  
feedback is required from the Forum first.


-- 
Jeff Squyres
Cisco Systems




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