Due to an update required on the Lustre filesystem serving HPCPERM, SCRATCH as well as fws4, the ECMWF HPCF will be were unavailable to run any standard jobs on:
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During the session, queued jobs will be were kept on hold with the reason "Licenses", and will start started once the session is over. At the same time, there will be was a shorter, concurrent session on the AC cluster requiring a reboot of login, GPIL and GPU nodes. This session will cause caused those nodes, including hpc-login and hpc-batch, to be unavailable between 08:30 - 10:30 UTC. Note that, while you may connect might after 10:30 UTC, the Lustre filesystems mentioned above will remain remained unavailable and any jobs submitted will be were on hold until the end of the longer session.
ECMWF Operations, Time-Critical Option 2 and 3 suites, as well as some prepIFS work will continue continued to run normally since they use a separate set of filesystems and HPC complexes.
As usual, we encourage encouraged you to follow the progress of this and other system sessions on the the ECMWF Service Status.
You may get in touch with us for any concerns of doubts by raising an issue through our ECMWF Support Portal.