CTA deployment meeting

Thursday 2 Jul 2020, 14:00 → 16:05 Europe/Zurich

600/R-001 (CERN)

Michael Davis (CERN)

14:00 → 14:10 ATLAS Update

• Migration debrief after Eric/Giuseppe back from holiday
• 170 TB still accounted to ATLAS in CASTOR
• 20 July write test 1 PB
• Steps to get everyone involved in CTA operations (documentation, monitoring, rota, ...)

14:10 → 14:20 Monitoring Update

Data Volume dashboard: solution for "Group by Month" issue

• ElasticSearch is better for the "data accounting" use case. Data can be preserved indefinitely.
• The Python script that combines both datasets should write the data to the monit-metrics JSON endpoint
• On top if you also want to keep writing the data into IDB it's fine (at the same time you send it to monit)
• That way we can store this new dataset, which I believe will come with the type: "daily_datavolume_castor_cta" in ES for long-term storage, and import the historical data from IDB.

Documentation

• David has produced some initial documentation
• Give feedback to iteratively improve it

14:20 → 14:30 ALICE

• Schedule to get ALICE into production: main agenda item for next week
• What is the next step?

14:30 → 14:40 Schedule for migrating other LHC Experiments

CMS

• Stress Test EOSCMS to EOSCTA, writing 1PB. Maria is waiting for our green light.
• FTS m-bit check?
• Schedule for Phedex to Rucio migration?

LHCb

• Dataflow test "beginning of next year"
• Would like to have CTA migration done before this test.
• Suggestion: now until Sept.: integration with Dirac, functional tests. Oct/Nov: commissioning tests. Jan: migration

14:40 → 14:50 Non-LHC Experiments

• NA62: We are eager to test the NA62 DAQ system with a CTA endpoint as soon as possible. (They use FTS).
• Vova starts 1 August.

14:50 → 15:00 External Sites

• We were getting an increasing number of e-mail requests from external sites including RAL and AARNET.
• Julien created CTA Community site so we don't get individually e-mailed and don't have to keep re-answering the same questions. 12 people signed up, 6 non-CERN from RAL, AARNet and Tao Lin. Low traffic (so far!).
• How can people submit documentation?
• How can people submit issues?
• How can people submit code/bug fixes?

15:00 → 15:10 RAO for LTO

• Integrating Paul's work
• Get something simple into CTA that is better than linear ordering. Then we can iteratively improve it as needed.
• The idea is to have a configurable runtime option to allow us to select different RAO approaches ("linear order" as default) so we can test them during commissioning tests.
• Only solutions proven to work will be deployed in production.

15:10 → 15:15 AOB

Cleaning up

• Documentation
• e-groups
• Log formats