[MPI3 Fortran] Should new features be retrofitted to Fortran 77 bindings?

[Bill Long]

What do you mean by "Fortran 77 codes"?  There are codes that are 
written in fixed source form and others in free source form.  If by F77 
you mean fixed source form, then that should be accommodated. 
Otherwise, old codes that were written in the before ~ 1993  are still 
Fortran programs and should compile with modern compilers for today's 
incarnation of standard Fortran.  Apart from supporting fixed source 
form, what retrofit is necessary?

Cheers,
Bill



Craig Rasmussen wrote:
> Jeff raised an interesting question with me.  Should new features that are being considered for MPI-3 be retrofitted if possible for Fortran 77 codes?  Some users might say yes as they never intend to use modern Fortran features.  On the other hand, F77 is over 30 years old and so perhaps we should move on and not put support (money) into adding new features.
> 
> The new Fortran MPI-3 bindings will allow users to link to codes using F77 bindings so if users want new bindings they only have
> to use MPI3 locally.
> 
> -craig
> 
> 
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-- 
Bill Long                                           longb at cray.com
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