RAL Tier1 Experiments Liaison Meeting

Wednesday 7 Apr 2021, 13:30 → 14:30 Europe/London

Access Grid (RAL R89)

Please attend via the following Zoom meeting:

https://ukri.zoom.us/j/98562731547?pwd=UU9Wb2xCL05tWmROT1h6SUlWdUJ3dz09

 

13:38 → 13:39 Major Incidents Changes

13:39 → 13:40 Summary of Operational Status and Issues

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))

13:40 → 13:41 GGUS /RT Tickets

https://tinyurl.com/T1-GGUS-Open
https://tinyurl.com/T1-GGUS-Closed

13:41 → 13:42 Site Availability

https://lcgwww.gridpp.rl.ac.uk/utils/availchart/

https://cms-site-readiness.web.cern.ch/cms-site-readiness/SiteReadiness/HTML/SiteReadinessReport.html#T1_UK_RAL

http://hammercloud.cern.ch/hc/app/atlas/siteoverview/?site=RAL-LCG2&startTime=2020-01-29&endTime=2020-02-06&templateType=isGolden

13:42 → 13:43 Experiment Operational Issues

13:44 → 13:45 VO-Liaison ATLAS

Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Dr Tim Adye (Science and Technology Facilities Council STFC (GB))

Updated Echo allocations for FY 21/22
 - https://helpdesk.gridpp.rl.ac.uk/Ticket/Display.html?id=406939 
 - Looks like no issues; will update ATLAS space json  today. 

 

     GGUS-Ticket-ID: #151098 "IN PROGRESS" "NGI_UK" "High failure rate at RAL-LCG2_TEST"
* Possible that interaction between Docker and pilot causes some unexpected termination of docker. 
i.e after Job 1, pilot tries to remove any orphaned processes with kill signal. 
might be killing 'something' that terminates docker job (HTCondor receives a ExitReason = “died on signal 9 (Killed)”)
 - If confirmed , ... ?

13:46 → 13:47 VO Liaison CMS

Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

Still running 3k cores. Hoping to increase that number this week. Job failures are ok and efficiency is 40-60% this week. 

SAM tests look better...fewer 'missing' tests. ARC-CE01 had no test results for 24 hours after a reboot of that machine, but a second reboot seems to have fixed that.

Talked to James A during the meeting and he agreed to increase the number of CMS jobs running on the newest software (Dell19 tranche). This may have been reduced in the recent past (since end-Feb) due to single-core jobs taking over, and CMS jobs only run multicore.

13:48 → 13:49 VO Liaison LHCb

Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))

13:52 → 13:53 VO Liaison Others

13:53 → 13:54 Experiment Planning

13:54 → 13:55 Dune/protoDune

13:55 → 13:56 Euclid

13:56 → 13:57 SKA

13:57 → 13:58 AOB

13:58 → 13:59 Any other Business

Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))