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@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@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@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@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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