[petsc-dev] Should PetscSignalHandlerDefault avoid calling MPI_Abort?

[John Peterson]

Hi Junchao,

I was just wondering if there was any update on this? I saw your question
on the discuss at mpich thread, but I gather you have not received a response
yet.

--
John


On Tue, Apr 21, 2020 at 10:09 PM Junchao Zhang <junchao.zhang at gmail.com>
wrote:

>   I don't see problems calling _exit in PetscSignalHandlerDefault. Let me
> try it first.
> --Junchao Zhang
>
>
> On Tue, Apr 21, 2020 at 3:17 PM John Peterson <jwpeterson at gmail.com>
> wrote:
>
>> Hi,
>>
>> I started a thread on discuss at mpich.org regarding some hanging canceled
>> jobs that we were seeing:
>>
>> https://lists.mpich.org/pipermail/discuss/2020-April/005910.html
>>
>> It turns out that there are some fairly strict rules about what types of
>> functions (asynchronous-safe only) can be called from signal handlers, and
>> MPI_Abort(), at least the mpich implementation of it, apparently does not
>> fall into that category. I wonder if you have any comments on this. One
>> possibility might be might be to just call "_exit" from
>> PetscSignalHandlerDefault rather than PETSCABORT, not sure what other
>> issues that would cause, however.
>>
>> Thanks,
>> John
>>
>
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