[petsc-users] Possible bug PETSc+Complex+CUDA

[Junchao Zhang]

Jorge,
 No problem at all with the new thread. I ran the tests you mentioned and
did found new problems.  Thanks.
--Junchao Zhang


On Fri, May 29, 2020 at 10:22 AM Jorge Chiva Segura <
jorge.chiva.segura at gmail.com> wrote:

> Hi Junchao,
>
> I am sorry, I tried to reply to the thread created by Rui Silva regarding
> this problem but it seems that I did something wrong and it looks like I
> created a new thread (I am not used to mailing lists :S).
> Just wanted to share that information in case that it could be useful to
> identify the problem and test the solution.
>
> Thank you very much for your help.
> Best regards,
> Jorge
>
> On Fri, May 29, 2020 at 4:03 PM Junchao Zhang <junchao.zhang at gmail.com>
> wrote:
>
>> Hi, Jorge,
>>   I knew this problem and a fix is coming. Thanks.
>> --Junchao Zhang
>>
>>
>> On Fri, May 29, 2020 at 7:52 AM Jorge Chiva Segura <
>> jorge.chiva.segura at gmail.com> wrote:
>>
>>> Dear all,
>>>
>>> I just wanted to add what we found in case that it can help to solve
>>> this problem:
>>>
>>> * Examples ex2.c, ex11.c and ex32.c under src/ksp/ksp/tutorials all of
>>> them seg-fault with "-mat_type mpiaijcusparse" or "-vec_type mpicuda" with
>>> CUDA 9.2 and 10.2.
>>>    Examples ex2.c and ex32.c work fine if PETSc scalar type is set to
>>> real instead of complex. PETSc has been compiled with gcc-6.4.0
>>>
>>> * Here:
>>>   https://dynamite.readthedocs.io/en/latest/tips.html#gpu-support
>>>   it is mentioned that there is some problem for CUDA versions 8 and
>>> above.
>>>
>>> * It seems that the same problem was mentioned in this thread:
>>>
>>> https://lists.mcs.anl.gov/mailman/htdig/petsc-users/2019-February/037748.html
>>>
>>> Please, let me know if you need any extra information.
>>>
>>> Thank you very much for your help.
>>>
>>> Best regards,
>>>
>>> Jorge
>>>
>>
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