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

[Itaru Kitayama via Openmp-dev]

I was calling a function that takes some parameter values implicitly
from host in the target region.

On Tue, Jun 30, 2020 at 6:08 AM Itaru Kitayama <itaru.kitayama at gmail.com> wrote:
>
> I map a dynamically allocated user-defined class pointer array, and in the error case I
> Try to get the address of the first array element. If I don’t the DtH transfer is not initiated.
>
> On Tue, Jun 30, 2020 at 5:59 Itaru Kitayama <itaru.kitayama at gmail.com> wrote:
>>
>> I asked that question myself. No never done it explicitly from my end. That happens if I try to get
>> the target address in printf in the target region.
>> And I’m using trunk Clang.
>>
>> On Tue, Jun 30, 2020 at 5:44 Alexey.Bataev <a.bataev at outlook.com> wrote:
>>>
>>> Are some data mapped as tofrom? In this case the data will be copied from the device to the host. BTW, try to update the clang to the latest version.
>>>
>>> -------------
>>> Best regards,
>>> Alexey Bataev
>>>
>>> 28.06.2020 11:02 PM, Itaru Kitayama via Openmp-dev пишет:
>>>
>>> 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.
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