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

[Jorge Chiva Segura]

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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