[GE users] Jobs leave orphaned processes behind

isakrejda isakrejda at lbl.gov
Tue Aug 31 00:20:18 BST 2010


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Hi,

This did the trick - looks like, but why isn't this a default?
What are possible drawbacks?
I was trying to google up more info about it, but I cannot find any
comprehensive description beyond
the short note in the man pages...

Thanks again,

Iwona

On Mon, Aug 30, 2010 at 9:38 AM, reuti <reuti at staff.uni-marburg.de> wrote:
> Hi,
>
> Am 30.08.2010 um 18:24 schrieb isakrejda:
>
>> I am trying to understand without diving into user's rather complex workflow
>> what might be causing  orphaned processes to be left behind when user's
>> job is killed by a time limit.
>>
>> Usually SGE kills all the child processes cleanly, but with this one case we
>> are having problems. Are there any well known loopholes that I am not aware of?
>
> for some applications they start a new process group and can't be caught by the usual kill of the process group. Setting:
>
> execd_params                 ENABLE_ADDGRP_KILL=TRUE
>
> in SGE's configuration should help. If not, it must be investigated why the job isn't tightly integrated into SGE.
>
> -- Reuti
>
>
>> Grateful for hints,
>>
>> Iwona
>>
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