Very much appreciated. Thank you!
- Andre
On Mon, 21 Jul 2025 13:38:56 +0200
Arjen Markus <arjen.markus...@gmail.com> wrote:
> I have a not-so-trivial, but compact test case for you. I will try it out
> with the receipe you gave :).
>
> Regards,
>
> Arjen
>
> Op ma 21 jul 2025 om 13:31 schreef Andre Vehreschild <ve...@gmx.de>:
>
> > Hi all,
> >
> > we are looking for people having old and/or modern Fortran codes available
> > that use Coarrays more or less intensively. Jerry has build a test branch
> > on
> > gcc's git, so testing is easier than usual:
> >
> > > For those who need some guidance to the test branch:
> > >
> > > $ git clone git://gcc.gnu.org/git/gcc.git
> > >
> > > $ cd gcc
> > > $ git checkout remotes/origin/devel/gfortran-test
> > > $ git switch -c gfortran-test
> > >
> > > Configure and build as usual in a separate directory not the source
> > directory.
> > >
> > > cd .. ; mkdir build ; cd build ; ../gcc/configure --prefix=<PREFIX>
> > > gmake install
> > >
> > > Replace <PREFIX> with a writeable full path on your system, e.g.
> > > ${HOME}/gcc-16
> > >
> > > To use the new gcc use:
> > >
> > > export PATH=${HOME}/gcc-16/bin:$PATH
> > >
> > > and
> > >
> > > export LD_LIBRARY_PATH=${HOME}/gcc-16/lib64:$LD_LIBRARY_PATH
> > >
> > > or
> > >
> > > export LD_LIBRARY_PATH=${HOME}/gcc-16/lib:$LD_LIBRARY_PATH
> > >
> > > depending on how your OS names the library directory. Just have a look
> > into
> > > gcc-16 and use lib64 if it is present, else use lib.
> >
> > We like everyone to test the new caf_shmem library and report back any
> > problems, like "does not compile", "does not run" or "hangs during
> > execution".
> > If you can narrow down the problem, that would be of great help. If you can
> > also share (whether in private or in public) any code, that has issues,
> > please
> > do not hesitate to contact me or the gfortran mailing list.
> >
> > To compile your Fortran coarray code add -lcaf_shmem instead of -lcaf_mpi,
> > if
> > you previously used OpenCoarrays. When using the OpenCoarrays compile
> > helper
> > `caf` replace it with `gfortran -fcoarray=lib` for comiling and `gfortran
> > -fcoarray=lib -lcaf_shmem` for linking.
> >
> > caf_shmem is multi process shared memory library for using coarrays with
> > gfortran from version 16 on. It can provide great speed improvements in
> > comparison to MPI-based implementations, but is limited to a single node
> > where
> > all CPUs can share memory.
> >
> > Any feedback is greatly appreciated.
> >
> > Thanks and regards,
> > Andre
> > --
> > Andre Vehreschild * Email: vehre ad gmx dot de
> >
--
Andre Vehreschild * Email: vehre ad gmx dot de
