# Slurm Workload Manager (`slurm`)
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Amazon ParallelCluster version 2.11.9 uses Slurm 20.11.9. For information about Slurm, see [https://slurm.schedmd.com/](https://slurm.schedmd.com/). For downloads, see [https://github.com/SchedMD/slurm/tags](https://github.com/SchedMD/slurm/tags). For the source code, see [https://github.com/SchedMD/slurm](https://github.com/SchedMD/slurm).

**Important**  
Amazon ParallelCluster is tested with Slurm configuration parameters, which are provided by default. Any changes that you make to these Slurm configuration parameters are done at your own risk. They are supported only on a best-effort basis.


| Amazon ParallelCluster version(s) | Supported Slurm version | 
| --- | --- | 
| 2.11.7, 2.11.8, 2.11.9 | 20.11.9 | 
| 2.11.4 to 2.11.6 | 20.11.8 | 
| 2.11.0 to 2.11.3 | 20.11.7 | 
| 2.10.4 | 20.02.7 | 
| 2.9.0 to 2.10.3 | 20.02.4 | 
| 2.6 to 2.8.1 | 19.05.5 | 
| 2.5.0, 2.5.1 | 19.05.3-2 | 
| 2.3.1 to 2.4.1 | 18.08.6-2 | 
| prior to 2.3.1 | 16.05.3-1 |