[gridengine users] Signal sent to processes on requeue

[Reuti]

Am 01.02.2012 um 12:25 schrieb Hugh Macdonald:

> It sounds like the prolog/epilog solution will work fine for me, but I thought I'd at least answer your questions, in case anything else came up.
> 
> On 31 Jan 2012, at 21:45, Reuti wrote:
> 
>> Hi,
>> 
>> Am 31.01.2012 um 21:00 schrieb Hugh Macdonald:
>> 
>>> I've got a python script here that is run through Grid. When I requeue the job,
>> 
>> what do you mean by requeue: resubmit or reschedule? Or a plain submission?
>> 
> We, for some reason, have ended up calling rescheduling "requeueing" internally. The fact that rescheduling everything on a queue instance uses the flag -rq doesn't help me think of it as rescheduling!

Okay, you are doing it with `qmod` by hand; that was the question.



>>> I want to catch the signal in the script, to do a bit of cleanup before exiting. I don't seem to be able to catch the signal, making me assume that it's SIGKILL that is being sent. Am I right in this assumption,
>> 
>> What did you do in detail to catch it?
> 
> This is all in Python
> 
> def signalHandler(signum, frame):
> 	print "Caught signal %d" % signum
> 
> import signal
> for sig in range(16):
> try:
>     signal.signal(sig, signalHandler)
>     print "Registered signal %d" % sig
> except:
>     print "Invalid signal %d" % sig

Yes, fine. SIGSTOP and SIGKILL can't be caught this way.

-- Reuti


> This was to ensure that I caught any signal that might have come through.
> 
> 
>> 
>>> and, if so, is there any way to change it to SIGTERM?
>> 
>> No. But you can submit with -notify and can catch this warning signal (`man qsub`), this signal can even be redefined (`man sge_conf`).
> 
> I think that prolog/epilog will sort me out here, so I think I'll leave this as it is, but thanks for the pointer.
> 
> 
> Hugh Macdonald
> nvizible – VISUAL EFFECTS
> 
> hugh.macdonald at nvizible.com
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