[Openmp-dev] OpenMP offloading app gets in unresponsive

[Itaru Kitayama via Openmp-dev]

I mean; the kernel gets aborted and I see a session prompt on JURECA at JSC.

On Sat, Sep 19, 2020 at 3:38 PM Itaru Kitayama <itaru.kitayama at gmail.com> wrote:
>
> While it was observed on ThunderX2 with V100 system, I don't see it on
> JURECA (with GPUs).
>
> On Sat, Sep 19, 2020 at 1:21 PM Johannes Doerfert
> <johannesdoerfert at gmail.com> wrote:
> >
> > I don't think so.
> > The only thing that comes to mind is that we switched to `abort` instead
> > of `exit` after the fatal error message.
> > Though, I'm not sure why that would cause the program to hang, except if
> > SIGABRT is somehow caught.
> >
> > ~ Johannes
> >
> > On 9/18/20 9:35 PM, Itaru Kitayama via Openmp-dev wrote:
> > > [...]
> > > Libomptarget error: Failed to synchronize device.
> > > Libomptarget error: Call to targetDataEnd failed, abort target.
> > > Libomptarget error: Failed to process data after launching the kernel.
> > > Libomptarget error: run with env LIBOMPTARGET_INFO>1 to dump
> > > host-targetpointer maps
> > > Libomptarget fatal error 1: failure of target construct while
> > > offloading is mandatory
> > >
> > > after this point, the process gets in the state of unresponsive and
> > > don't receive a signal from the user. Is this due to a new feature of
> > > LLVM?
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