Message boards : News : CMS@Home disruption, Monday 22nd July
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ivan
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Message 39376 - Posted: 17 Jul 2019, 13:14:12 UTC

I've had the following notice from CERN/CMS IT:

>> following the hypervisor reboot campaign, as announced by CERN IT here: https://cern.service-now.com/service-portal/view-outage.do?n=OTG0051185
>> the following VMs - under the CMS Production openstack project - will be rebooted on Monday July 22 (starting at 8:30am CERN time):
...
>> | vocms0267 | cern-geneva-b | cms-home

to which I replied:
> Thanks, Alan. vocms0267 runs the CMS@Home campaign. Should I warn the volunteers of the disruption, or will it be mainly transparent?

and received this reply:
Running jobs will fail because they won't be able to connect to the schedd condor_shadow process. So this will be the visible impact on the users. There will be also a short time window (until I get the agent restarted) where there will be no jobs pending in the condor pool.
So it might be worth it giving the users a heads up.

So, my recommendation is that you set "No New Tasks" for CMS@Home sometime Sunday afternoon, to let tasks complete before the 0830 CST restart. I'll let you know as soon as Alan informs me that vocm0267 is up and running again
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Message 39377 - Posted: 17 Jul 2019, 15:21:38 UTC - in response to Message 39376.  

thanks, Ivan, for the early information :-)
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ivan
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Message 39378 - Posted: 17 Jul 2019, 15:49:49 UTC - in response to Message 39377.  

OK, my current batch will run down tomorrow night, I think. I'll try to size the next one to drain late Sunday. Federica has a workflow in the pipeline, I'll wait to see how long that will take before I submit my next one.
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computezrmle
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Message 39380 - Posted: 17 Jul 2019, 20:33:36 UTC

https://cern.service-now.com/service-portal/view-outage.do?n=OTG0051244
According to this announcement the hypervisor reboot campaign of CERN's GitLab machines starts at Thu Jul 18, 2019 08:30 CEST.
This may affect CMS VMs during their boot phase as they download singularity_wrapper.sh from gitlab.cern.ch.
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ivan
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Message 39382 - Posted: 18 Jul 2019, 10:00:11 UTC - in response to Message 39380.  

I think Alan's warning over-rides the general message, but let's be wary in any case.
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ivan
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Message 39408 - Posted: 21 Jul 2019, 7:09:33 UTC

Apologies, I'm not going to be very active for a while, not from home at least. My water pipes have developed pin-hole leaks, corroding from inside, and dumped a steady stream of water onto my broadband modem. :-( It's not going to be easy to fix, the whole house needs renovation (plumbing, wiring, heating, new bathroom & kitchen, carpets, etc.). I'm going to have to find a new place to live while it's being done, I think.
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computezrmle
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Message 39410 - Posted: 21 Jul 2019, 18:38:28 UTC - in response to Message 39408.  

My water pipes have developed pin-hole leaks, corroding from inside, and dumped a steady stream of water onto my broadband modem. :-(

Hence I vote for a new sticker on tobacco packages:
"Smoking kills your internet connection!"
Could be combined with pictures showing destroyed modems.
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Erich56

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Message 39411 - Posted: 22 Jul 2019, 15:39:15 UTC

Obviously, most of LHC@Home is still switched off.
Any ongoing troubles with today's maintenance?
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Message 39412 - Posted: 22 Jul 2019, 15:40:30 UTC

Same here,
not only CMS, but ALL projects seem to be affected!
Why mine when you can research? - GRIDCOIN - Real cryptocurrency without wasting hashes! www.gridcoin.us
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ivan
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Message 39414 - Posted: 22 Jul 2019, 15:45:11 UTC - in response to Message 39411.  
Last modified: 22 Jul 2019, 16:06:22 UTC

Obviously, most of LHC@Home is still switched off.
Any ongoing troubles with today's maintenance?

Yes, there were: https://cern.service-now.com/service-portal/view-outage.do?n=OTG0051185.
However, LHC@Home-dev is serving up tasks -- but they fail after ~15 minutes. WMStats shows jobs pending but none running. Our condor server does appear to be up, but there must be a blockage elsewhere in the chain.
[Later] Just had a message that our condor server has been rebooted, am awaiting signs of life. [/Later]
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Message 39415 - Posted: 22 Jul 2019, 16:28:03 UTC

here, BOINC shows that finished tasks were uploaded, but still waiting for being reported.
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Message 39416 - Posted: 22 Jul 2019, 17:34:12 UTC - in response to Message 39415.  

Also here,
Strange that upload seems to be OK.
Only scheduler seems to work. All others disable.
I have about 100 WU waiting validation and server report only 20 for all the world.
Not forget to read the annoucment of past week !



here, BOINC shows that finished tasks were uploaded, but still waiting for being reported.
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Message 39417 - Posted: 22 Jul 2019, 17:54:55 UTC

right now, the server status page shows that only the scheduler has been startet - everything else is still down :-(

What went wrong there today?
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Message 39418 - Posted: 22 Jul 2019, 22:30:13 UTC

7/22/2019 11:25:17 PM (GMT+1) | LHC@home | Server error: feeder not running

Can report tasks and they appear to be getting validated, but I do have 4 six track tasks stuck in the holding cell pending validation.

The few CMS tasks I had in queue have validated and so did the ATLAS stuff.

Just looks like you can get work right now.
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Message 39420 - Posted: 23 Jul 2019, 4:21:01 UTC

Can't get new work, can't report completed work. Theory Native and Atlas VBox both affected.
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Message 39421 - Posted: 23 Jul 2019, 6:16:24 UTC

Many tasks ready to report both Linux and Windows.
Tullio
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Message 39422 - Posted: 23 Jul 2019, 7:46:03 UTC

Seems to be working now, thanks for the fix.
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Message 39424 - Posted: 23 Jul 2019, 8:43:22 UTC

Got a CMS task but it failed as there are no subtasks:
https://lhcathome.cern.ch/lhcathome/result.php?resultid=237448622
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ivan
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Message 40127 - Posted: 11 Oct 2019, 15:50:01 UTC

There is currently disruption to CMS jobs -- there are jobs in the queue but they are not being served out. I notified CERN IT, but it would be best to set No New Tasks to avoid lots of task failures. Unfortunately I can't check in overnight; I'll update the situation tomorrow.
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ivan
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Message 40133 - Posted: 12 Oct 2019, 14:13:35 UTC - in response to Message 40127.  

There is currently disruption to CMS jobs -- there are jobs in the queue but they are not being served out. I notified CERN IT, but it would be best to set No New Tasks to avoid lots of task failures. Unfortunately I can't check in overnight; I'll update the situation tomorrow.

Jobs are being served, but slowly. I submitted eight tasks this afternoon, and only one got a job to run before the ten-minute time-out. I'm keeping the CERN crew notified.
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Message boards : News : CMS@Home disruption, Monday 22nd July


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