On 22 June 2022 at 10 UTC the AA complex will become unavailable for essential hardware and software upgrades. In preparation for it, the complex is currently being drained and jobs due to finish after 22 June 2022 at 10 UTC will not be run. You may continue to use the AB complex for your interactive and batch workloads.
We strongly recommend all users to use the new generic hostnames for our Atos HPCF service instead of the specific complex login nodes. You may use hpc-login for interactive login access and hpc-batch for remote batch submission, which will always point to an available complex
Note that after the session, the shorthand hostnames such as aa.ecmwf.int will also be retired in favour of the alternatives described in HPC2020: How to connect.
You have more information on how to connect to the Atos HCPF in the HPCF Documentation pages.