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 [Information] LUMI maintenance break 7-21 January, 2026

[Information] LUMI maintenance break 7-21 January, 2026

LUMI-O will be available during the maintenance break except 19-21 January.
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The LUMI system will be offline for maintenance starting on Wednesday, 7 January, 2026.
LUMI login nodes, compute nodes, and all the storage partitions won’t be accessible with the exception of the object storage partition LUMI-O which will remain available most of the maintenance period. A network maintenance will be done at the same time that can affect access to LUMI-O for a couple of days (we will communicate further as soon as these days are confirmed).
We expect the system to be back in production on Wednesday, 21 January, 2026.
Significant parts of the system software will be updated in order to get a more stable and up-to-date system after the maintenance break. It includes the base OS (upgraded to SUSE 15 SP6 and the equivalent COS version), and the Slingshot host software. ROCm will be updated to version 6.3 and the programming environment to version 25.03 which is based on ROCm 6.3 and, for the Cray compilers, clang/LLVM 19.
The driver for ROCm 6.3 officially supports ROCm versions from 6.1 onward, but already benefits from the attempts of AMD to offer a longer support window for ROCm userland libraries on ROCm drivers so should be able to support ROCm versions up to 7.0.
As part of the update, older versions of the Programming Environment that are not fully functional anymore will be removed from the system. However, 23.09 (CCE 16), and 24.03 (CCE 17) will remain available for now.
Please, don’t hesitate to contact us if you need any further information https://lumi-supercomputer.eu/user-support/need-help/