> ## Documentation Index > Fetch the complete documentation index at: https://docs.coreweave.com/llms.txt > Use this file to discover all available pages before exploring further. # November 13, 2025 - SUNK v7.0.0 release > SUNK v7.0.0 upgrades Slurm to 25.05.3 with priority-based node scaling and nsscache as the default directory service ## Overview SUNK v7.0.0 introduces several new features and improvements, including a major version upgrade to Slurm 25.05.3, more consistent node scaling behavior, new default Slurm chart configurations, improved memory management, and bug fixes. ## Upgrade to Slurm 25.05.3 SUNK v7.0.0 upgrades Slurm to version 25.05.3. This upgrade includes upstream bug patches and performance optimizations which can benefit training job performance. ## Priority-based node scaling The NodeSet scaling-down behavior is now priority-based and consistent with rolling upgrade behavior. Scaling down now prefers idle nodes and respects pod priorities (`not-ready` > `idle` > `draining` > `running`), with timestamps as a deterministic tiebreaker. To further improve resource utilization and reduce churn, newer pods are deleted first, thus preserving pods with more accumulated state/history. This change impacts all NodeSet scale-down operations when the `ScaleDownPriorityOrdering` feature flag is enabled. This feature flag is enabled by default. ## Compute Nodes allocate memory to `slurmd` on startup, reducing OOM errors By default, nodes will now have `RealMemory` configured to the values specified in `resource.limits.memory` during the `slurmd` startup. These values can be overridden by the `.realMemory` key. Setting this value during the `slurmd` startup ensures that `slurmd` uses only the memory allocated to it, instead of the entire memory of the node. This reserves memory for the necessary Kubernetes workloads, thereby reducing the possibility of Out of Memory (OOM) errors. ## MySQL Operator support SUNK v7.0.0 introduces MySQL Operator support for Slurm accounting, allowing for easier maintenance and management of the MySQL database. Any existing records that need to be retained will have to be migrated over during the upgrade. For assistance with this process, please contact [CoreWeave Support](/support). ## `nsscache` now the default directory service `nsscache` is now the default directory service for SUNK. This replaces the previous directory service based on SSSD. For more information, see [manage users with `nsscache`](/products/sunk/manage_sunk/manage_cluster_access/nsscache). * This changes the existing behavior of how users are made available in Slurm * Slurm users are automatically created so the user no longer needs to do so ## `login.sshdConfig` now accepts individual values without overwriting defaults Users can now set individual values for the `login.sshdConfig` parameter in the Slurm chart without overwriting default values. Default values will persist unless overridden. * The YAML template will convert the `no` into boolean value by default. Users need to use quotes in configuration. ## `task/cgroup` enabled by default `task/cgroup` is now enabled by default. This allows for more flexibility when configuring partitions, both manually and automatically created. Values can be set per partition and defaults are called out. Changes to the partitions configuration parameters will not affect existing NodeSet configurations. Additionally, for automatically created partitions, the `defCPUPerGPU` and `defMemPerCPU` values are now automatically defined. ## `/coredumps` directory now exists in Slurm images The path to `coredump` is now set to an existing folder (`/coredumps`), residing on `emptydir`. This ensures that `coredumps` are saved in the expected path, and that they can be easily accessed even if the `slurmd` pod is in `crashloopbackoff`. ## Multiple SSH keys now usable via SUNK User Provisioning This patch updates SCIM ingestion to allow writing multiple authorized keys per-user to the `nsscache` SSH key cache. Users can now add more than one SSH key in User Settings without losing SSH access. ## Fixed a bug preventing Pyxis from being used inside a Slurm job This patch resolves issues related to the `--container-name=mycontainer:exec` flag and `enroot list -f` command when running Pyxis inside a Slurm job. With this bug fix, users can now use Pyxis inside a Slurm job without encountering errors. ## Support for new IB/RoCE labels for topology generation This release adds support for newly-defined Infiniband labels used for topology generation.