RAL Tier1 Experiments Liaison Meeting

Wednesday 1 Jul 2020, 13:30 → 14:30 Europe/London

Access Grid (RAL R89)

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))

RT1EL-20200701.docx

RT1EL-20200701.pdf

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))

 

• Singularity: Unprivileged mode 

  Recent experience suggests updates to singularity expose unintended consequence to other VO's. 
Solution appears to be the move to  Unprivileged / user namespaces, after which each (major) VO can use it's own singularity version from cvmfs (GGUS#146651);
This likely (?) requires update to Docker; requiring development, testing and deployment. Would be useful to get a timescale / plan. (Am also happy to contribute where possible).

 

 

13:46 → 13:47 VO Liaison CMS

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

Not a bad week for operations.

I have been trying to use settings other than 'Lazy-Download' on the mini-batch farm, but there are some problems rolling out to the 30 nodes using Aquilon. Jose is investigating.

13:48 → 13:49 VO Liaison LHCb

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

LHCb

ECHO streaming debugging: Finally having an almost stable system. Move to memory proxies on Friday

arc v6 : 

 

 DUNE

 move to using CRIC for ETF hopefully soon

 updating glide in WMS settings to improve job submission rate to RAL. Hoping ticket is opened for this soon. 

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))