[mpich-discuss] MPICH 3.1 fails doesn't create core file.

[Anatoly G]

I'm not sure about my current failure.
I execute my application (MPI processes). Each process executes endless
loop. After a couple of hours Master process fails (disappears - I can't
see it using 'ps' command). There is no core file. I'm not sure about the
reason of failure.
It looks strange that single process (15 processes executed) fails w/o core
file dropping.
I suspect that I'm using MPICH in wrong way, which causes failure.
But like I said before I'm not sure about failure.

Regards,
Anatoly.

On Mon, Oct 13, 2014 at 6:21 AM, Wesley Bland <wbland at anl.gov> wrote:

> Calling MPI_Abort is not an error that would cause the OS to dump a core.
> For that, you'll need to do something within your application that would
> normally cause it to dump a core. MPICH itself won't do it for you. You can
> add a divide by zero error to your own code and you'll get a core file of
> your app. What specifically within MPICH are you trying to debug?
>
> Thanks,
> Wesley
>
>
>
> On Oct 12, 2014, at 10:09 PM, Anatoly G <anatolyrishon at gmail.com> wrote:
>
> Thank you.
> My OS (Kubuntu 14.04).
> ulimit is already set to unlimited.
> When I generate exception (abort() function or divide by zero) I always
> get a core file,
> but when MPICH fails (for example with MPI_Abort) no core file created.
> May be I need to change any other settings?
>
>
> Regards,
> Anatoly.
>
> On Sun, Oct 12, 2014 at 4:47 PM, Lu, Huiwei <huiweilu at mcs.anl.gov> wrote:
>
>> The core file is created by the OS, not MPICH. What’s the output of
>> ‘ulimit -c’ on your machine? Could you set ‘ulimit -c unlimited’ and try
>> again?
>>
>> —
>> Huiwei
>>
>> On Oct 12, 2014, at 7:35 AM, Anatoly G <anatolyrishon at gmail.com> wrote:
>>
>> > Dear MPICH.
>> > I'm using MPICH3.1
>> > After application run of 4-5 hours Master process fails, but it doesn't
>> creates a core file.
>> > When I used MPI_Abort (in the past) it not creates core file too.
>> > Can I make MPICH create core in any fail (of course if it's MPI fail).
>> >
>> > Regards,
>> > Anatoly.
>> >
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