Re: RFC: Building a minimal libgfortran for nvptx

[Bernd Schmidt <bernds at codesourcery dot com>]

On 11/04/2014 04:59 PM, FX wrote:
> > Comments on the approach, do the Fortran maintainers have a
> > preference how this should look? The whole thing is good enough to
> > substantially reduce the number of failures when trying to run the
> > Fortran testsuites on nvptx (although many remain).
>
> I’m afraid I don’t really see the point. Maybe I’ll say it
> differently that Steve has: what would be the state of Fortran on
> such platform, and would it have users? It looks that, at the very
> least, your target wouldn’t be able to do any I/O.

It would be used through OpenACC - and that I do believe that does have 
Fortran users, with other compilers. We can make Fortran OpenACC work 
for simple testcases without any runtime library, but IMO it would be 
better to go as far as possible in supporting whatever can be made to 
work. I/O is the major piece that is missing, but you'd expect that to 
be done on the host rather than on the accelerator.


Bernd