Qlustar Announce February 2026

qlustar-announce@qlustar.org

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Qlustar HPC Core Stack 26.02
by General announcements about Qlustar 21 Feb '26

21 Feb '26

The Qlustar team is pleased to announce the availability of the HPC Core Stack [1] 26.02 release for Qlustar 13 and 14. It was published together with the latest security bug fix update and can be installed by updating the Qlustar 13/14 chroots on the cluster head-node. This release includes the following individual major HPC core stack component updates: - Spack version 1.1.1 [2] - Slurm version 25.05.6 [3] - RDMA-Core version 61.0 [4] - HWloc version 2.12.2 [5] - UCX version 1.20.0 [6] The new version of Spack allows easy and direct access to the most recent compilers, MPIs and hundreds of other applications relevant to HPC. Amongst others, it includes gcc 15.2.0 and OpenMPI 5.0.8 as new default versions. Please note that starting from version 1.0, Spack has moved to database format v8. This requires reindexing and updating the format of the database. To do this, login on a cluster node as a user with Spack admin rights (usually user 'softadm' or anybody in the group 'softadm') and execute $ spack reindex On Qlustar 14, this release also comes with the following major version updates: - ZFS version 2.3.5 [7] - Lustre version 2.17.0 [8] [1] https://qlustar.com/qlustar/hpc-stack/hpc-core-stack/ [2] https://spack.readthedocs.io/en/latest/features.html [3] https://www.schedmd.com/slurm/ [4] https://github.com/linux-rdma/rdma-core/releases/tag/v61.0 [5] https://www.open-mpi.org/projects/hwloc/ [6] https://openucx.org/ [7] https://github.com/openzfs/zfs/releases/tag/zfs-2.3.5 [8] https://www.lustre.org/lustre-2-17-0-released/

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Security/Bug fix releases 14.1.0, 13.4.0
by General announcements about Qlustar 21 Feb '26

21 Feb '26

The Qlustar releases 14.1.0 and 13.4.0 are ready including a number of security/bug fixes. Please check the following web pages for details about security fixes and special update instructions: https://qlustar.com/qsa/2026/0220261 https://qlustar.com/qsa/2026/0220262 https://qlustar.com/qsa/2026/0220263 The following non-security related updates/enhancements/bug fixes are included: For Qlustar 13 and 14: - Update to HPC Core Stack 02/26 (see separate announcement) For Qlustar 14 only: - QluMan 14.1.0 * New feature: Node/MAC detection from Switches + Dynamic Node booting * Alerts: - Assign cloned alerts to the new alert config - Force alert names to be unique * Network proxy: - Catch already closed sockets when other side closes the connection - Turn down info message for socket forwarding * slurm: - use nodes visible hostname in slurm config - Re-enable GUI accounting menu when working with 13.x clusters - Only use 256MB MemSpecLimit for demo nodes at install time * qluman-slurmd - Port to new pyslurm API to support slurm 25.05.x - Multiple bug fixes

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Qlustar Announce February 2026