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

[Jorge Chiva Segura]

Hello Junchao,

I have seen the merge request:

https://gitlab.com/petsc/petsc/-/merge_requests/2822

It is very detailed and interesting. Amazing job!!! :D

I tried the first option that you mentioned in the merge request
(clonning thrust, especifying '--with-clanguage=cxx' and adding
"-I/path-to-thrust" to CFLAGS, CXXFLAGS and CUDAFLAGS) and it solved the
problem. Then I tried with petsc master
and '--with-thrust-dir=/path-to-folder-that-contains-a-folder-named-include-that-contains-thrust'
and it also worked ^_^

Thank you very much for your help!
Best regards,
Jorge

On Tue, Jun 16, 2020 at 8:48 PM Junchao Zhang <junchao.zhang at gmail.com>
wrote:

> Hello, Jorge,
>   The problem is fixed in petsc master and you need to add
> --download-thrust to your configure options to use this feature.
>   Thanks for reporting.
> --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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