Cluster size in AWS PCS
AWS PCS provides highly available and secure clusters, while automating key tasks such as patching, node provisioning, and updates.
When you create a cluster, you select a size for it based on two factors:
The number of compute nodes it will manage
-
The number of active and queued jobs that you expect to run on the cluster
Important
You can't change the cluster size after you create the cluster. If you need to change the size, you must create a new cluster.
| Slurm cluster size | Number of instances managed | Number of active and queued jobs |
|---|---|---|
| Small | Up to 32 | Up to 256 |
| Medium | Up to 512 | Up to 8192 |
| Large | Up to 2048 | Up to 16384 |
Examples
If your cluster will have up to 24 managed instances and run up to 100 jobs, choose Small.
If your cluster will have up to 24 managed instances and run up to 1000 jobs, choose Medium.
If your cluster will have up to 1000 managed instances and run up to 100 jobs, choose Large.
If your cluster will have up to 1000 managed instances and run up to 10,000 jobs, choose Large.
