LCG Experiment Coordination Meeting

Monday 12 Feb 2007, 14:30 → 16:05 Europe/Zurich

28-R-015

Coordination meeting between LCG service and LHC experiments.

Subscribe to lcg-experiment-coordination@cern.ch to be kept informed...

To join the call, do one of the following:
a. Dial +41227676000 (Main) and enter access code 0166222, or
b. To have the system call you, click here: https://audioconf.cern.ch/call/0166222

(Leader code is 0166111)

14:30 → 14:40 Upcoming Service Interventions (with dates / times where known)

Link to CIC Portal (broadcasts/news), scheduled downtimes (GOCDB) and CERN IT Status Board

• Intervention on LCG Oracle RAC cluster at CERN, Tuesday 13 Feb 08:00 - 11:00 UTC. Click here for a list of affected services.
• Intervention on CMS Oracle RAC cluster at CERN, Tuesday 13 Feb 08:00 - 11:00 UTC. Click here for a list of affected services.

• FTS Service split - in progress - more details on schedule and impact will be provided at the meeting.

Time at WLCG T0 and T1 sites.

Announcements should be visible on CIC portal under 'news' and not just sent as e-mail.

14:40 → 14:55 Follow up on Experiment Production Schedules & Resource Requirements

See presentation to GDB meeting

14:55 → 15:05 Preparation for multi-VO Tier0-Tier1 tests - WLCG Milestones

Preparation & scheduling of WLCG Q1 milestones 1-3:

Target data rates are based on the Megatable (65% / 50% / 35% respectively) - need to be clear about peak and average rates

At CERN, the FTS Channel shares will be adjusted according to these data rates by VO per site prior to start of ATLAS exercise (26 Feb) until at least end-March (or end 2007?)

Do we need to ask Tier1s to adjust their channel shares? - need T1-T1 / T1<->T2 data rates else leave default

Specific tests that require different shares, e.g. ALICE (or other) HI transfers, will have to be scheduled around these milestones and other experiment-driven activities.

Monitoring of progress (beyond GridView) - review experiment view on weekly basis at LCG ECMs in March?

Minimum channel share will be 5%.
ATLAS rates in megatable are peak - shares will be based on average rates, i.e. peak / 2.
These will be set in 3rd week of February prior to the start of ATLAS Tier0 exercise on Monday February 26th.
An open question is T1-T2 / T1-T1 channels - should we also set VO shares on these? (To be revisited in a few weeks...)

Slides fts-shares-feb12.pdf fts-shares-feb12.ppt

15:05 → 15:15 Summary of Experiment Activities (as input to Operations meeting)

Paper SC4_Weekly_Report_and_upcoming_activities_12_February_2007.doc SC4_Weekly_Report_and_upcoming_activities_12_February_2007.pdf

15:15 → 15:20 AOB