[Openmp-dev] Target CUDA RTL --> Error when copying data from device to host.

[Ye Luo via Openmp-dev]

Because when the kernel is launched, the error doesn't ocurr immediately.
Then a D2H is enqueued and the error happens before it gets revealed.
Target CUDA RTL --> Error when copying data from device to host. Pointers:
host = 0x0000fffff1f6c460, device = 0x0000ffff84802800, size = 592
Target CUDA RTL --> CUDA error is: an illegal memory access was encountered
Your kernel has invaid memory access. (probably a bug)
Best,
Ye
===================
Ye Luo, Ph.D.
Computational Science Division & Leadership Computing Facility
Argonne National Laboratory


On Mon, Jun 29, 2020 at 3:40 PM Itaru Kitayama via Openmp-dev <
openmp-dev at lists.llvm.org> wrote:

> I'm seeing the same error on an X86 with K20 GPU, for the record.
>
> On Sun, Jun 28, 2020 at 7:54 PM Itaru Kitayama <itaru.kitayama at gmail.com>
> wrote:
> >
> > Alexey,
> > The log collected on the ThunderX2 compute node is attached.
> >
> > On Sun, Jun 28, 2020 at 7:42 PM Alexey Bataev <a.bataev at hotmail.com>
> wrote:
> > >
> > > Hi Itaru, there might be the problem with copying to device, with
> kernel execution, etc. Sire, send the log to understand what is the real
> cause of the problem.
> > >
> > > Best regards,
> > > Alexey Bataev
> > >
> > > > 28 июня 2020 г., в 03:53, Itaru Kitayama via Openmp-dev <
> openmp-dev at lists.llvm.org> написал(а):
> > > >
> > > > I'm seeing this although I don't add a single program requiring
> copying
> > > > data back from target. I'm developing my app on AArch64 with V100.
> > > > I am happy to provide the log upon request.
> > > > _______________________________________________
> > > > Openmp-dev mailing list
> > > > Openmp-dev at lists.llvm.org
> > > > https://lists.llvm.org/cgi-bin/mailman/listinfo/openmp-dev
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