We will be making a quick update to opensearch.ceda.ac.uk at 13:00 today (6th October 2020). This is as part of the JASMIN migration work which has been ongoing throughout the summer. ...

Dear all, As you know we have recently seen some problems with the SLURM scheduler for the LOTUS batch processing cluster, with jobs remaining in the pending state for much longer than normal. This issue has been and remains a top priority for the JASMIN team to resolve. Here’s the current state of affairs: • Today (Monday 5 Oct) o Fair-share configuration has been adjusted to attempt to lower the priority of very large/long-running jobs (which were causing sections of the cluster to become blocked) o An even mix of user ids is now being seen with running and pending jobs, implying that jobs are now starting to flow more normally, without being dominated by any one user. o A fix to a storage client has been rolled out to some parts of JASMIN which fixes a write issue for some users (NB not necessarily related to scheduling issues) ...

The CEDA data catalogue ( catalogue.ceda.ac.uk ) will be temporarily offline at 5pm today for upto 15 minutes for a quick update. ...

Dear all, We are experiencing extremely high numbers of helpdesk queries on the JASMIN helpdesk and now have a significant backlog. ...

The following scientific analysis servers will be unavailable for 5-10 minutes on Monday, 21st September at 08:30 AM for memory changes: ...

Dear JASMIN users, This message includes information about the following: New high-memory CentOS7 sci machines Retiring RHEL6 high-mem Sci machines on Friday 25th September Hpxfer servers Details of the update The new high-memory (1TB) CentOS7 scientific analysis server with SLURM enabled sci3.jasmin.ac.uk and sci6.jasmin.ac.uk and sci8.jasmin.ac.uk are available for users to use ...

Scheduled maintenance is planned for Tuesday 15th September, which may cause some disruption to JASMIN and CEDA services. On a regular (roughly quarterly) basis, important updates are applied to systems within the JASMIN infrastructure (which also hosts the CEDA Archive and associated services) in order to keep them up to date and secure. Some servers may need to be rebooted in order for these changes to take effect, so there may be an interruption to some JASMIN and CEDA services on this date. The maintenance work will also include a network change which should help prevent recent problems experienced with the virtualization cluster. ...

The Near-Line Archive (NLA) tape system will be unavailable from Friday the 11th September until Tuesday 15th September 2020. During this time the operating system of the NLA server will be updated. ...

Maintenance work on the Spectra tape library is now planned for tomorrow Tuesday 8th September, which may mean a delay to tape retrievals with Elastic Tape (ET) and Near-Line Archive (NLA) services. ...