ATLAS UK Cloud Support

Thursday 17 Sept 2020, 10:00 → 11:00 Europe/London

Vidyo

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

Outstanding tickets

• 148589 UKI-LT2-UCL-HEP less urgent in progress 2020-09-15 08:59:00 Failovers from UKI-LT2-UCL-HEP to CERN backup proxy
  • Waiting for reply from site; squid now monitored through gocdb
• 148401 UKI-NORTHGRID-LANCS-HEP less urgent in progress 2020-09-16 10:40:00 UKI-NORTHGRID-LANCS-HEP: globus_ftp_client failures
  • 17 further files declared lost; zfs scrubbing continuing
• 148342 UKI-SCOTGRID-GLASGOW less urgent in progress 2020-09-15 12:59:00 UKI-SCOTGRID-GLASGOW with transfer efficiency degraded and many failures
  • Deletions inside DPM ongoing.
• 146771 UKI-SCOTGRID-ECDF less urgent in progress 2020-09-05 18:57:00 UKI-SCOTGRID-ECDF deletion failures with “The requested service is not available at the moment.”
  • Action JW - to check and close.
• 146651 RAL-LCG2 urgent on hold 2020-08-10 10:59:00 singularity and user NS setup at RAL
  • On hold
• 146374 UKI-NORTHGRID-SHEF-HEP urgent in progress 2020-09-11 13:35:00 ATLAS pilot jobs idle on UKI-NORTHGRID-SHEF-HEP CE
  • On hold
• 144759 UKI-SCOTGRID-GLASGOW less urgent on hold 2020-08-10 09:54:00 High traffic from UKI-SCOTGRID-GLASGOW on RAL CVMFS Stratum1
  • On hold
• 142329 UKI-SOUTHGRID-SUSX top priority on hold 2020-06-04 14:05:00 CentOS7 migration UKI-SOUTHGRID-SUSX
  • On hold

CPU and transfers

• UK accounting page not working;

  • JW to follow-up.

• RAL

  • no issues.

• Northgrid

  • Mancs move to arc-6; one of the ‘hacks’ reverted (arc-5 to remove some memory limits).

• London

  • QMUL out of downtime; additional storage needs to be added asap
    • affects gridFTP and SRM, but not xrootd.
    • With new storage SCRATCHDISK will be enabled (set to reasonable size again)

• SouthGrid

• Scotgrid

Other new issues

Ongoing issues

• TPC http
  • NTR

News round-table

• Vip
  • DPM upgrade in couple of weeks; will enter downtime.
• Dan
  • (Update added to CPU section on QMUL lustre migration)
• Matt
  • MD off next week.
• Alessandra
  • NTR
• Sam
  • NTR
• Gareth
  • Question on moving to storageless:
    • Are there values for required sizes of caches (storage per job slot)?
      • eg. xcache. for example per site requirements.
    • example: BHAM (80TB) => OX (200TB) from HS06 scaling
    • AF: Not much from UK using xcache, and CMS a good place to look.
• Tim
  • Noted AF closed a number of Jira tickets.
• JW
  • NTR

AOB

10:00 → 10:20 Status

10:20 → 10:40 Ongoing issues

• TPC http
  • NTR

10:40 → 10:50 News round-table

• Vip
  • DPM upgrade in couple of weeks; will enter downtime.
• Dan
  • (Update added to CPU section on QMUL lustre migration)
• Matt
  • MD off next week.
• Alessandra
  • NTR
• Sam
  • NTR
• Gareth
  • Question on moving to storageless:
    • Are there values for required sizes of caches (storage per job slot)?
      • eg. xcache. for example per site requirements.
    • example: BHAM (80TB) => OX (200TB) from HS06 scaling
    • AF: Not much from UK using xcache, and CMS a good place to look.
• Tim
  • Noted AF closed a number of Jira tickets.
• JW
  • NTR

10:50 → 11:00 AOB