[OpenCoarrays] Re: Block construct and sync all behavior

[N.M. Maclaren]

On Oct 21 2014, Damian Rouson wrote:
>
>But, as you say, I/O synchronisation is
>> not part of the coarray design or gfortran run-time system.  
>
> That's fine as a design decision, but what in the standard communicates 
> this design decision? When I read "8.5.3 SYNC ALL statement" in a draft 
> of the Fortran 2008 standard, I see nothing that would make it clear to a 
> novice that segment ordering does not imply ordering of I/O. It would be 
> nice to see a note of warning.

Grrk.  You have a point.  That is implied (vaguely) by Note 9.15, but
doesn't seem to be stated anywhere.  Nor whether the merging preserves
record boundaries which, in practice, it won't.


Regards,
Nick Maclaren.