Our cluster combines various hardware resources from multiple universities and other organizations. By default you can only use the nodes having NO Taints (see the resources page of the portal).
Here's the full list of taints on the nodes. To run on the node having a taint, you need to use the node toleration in your pod. Some are set automatically on deployed jobs by our cluster, some can only be used by privileged users. Please refer to this list and only set the ones you were allowed to use by cluster admins.
|Taint||Purpose||Normal users can set manually|
|nautilus.io/ceph=true:NoSchedule||Don't run any user jobs on ceph storage nodes||No|
|nautilus.io/haosu=true:NoSchedule||Private Hao Su cluster.||No|
|nautilus.io/large-gpu=true:NoSchedule||Node accepts 4- and 8-GPU jobs only. Set automatically.||No|
|nautilus.io/noceph=true:NoSchedule||Ceph is not working on the node. Otherwise the node is fine.||Yes|
|nautilus.io/science-dmz=true:NoSchedule||Node can only access the science DMZ network, and not the public Internet.||Yes|
|nautilus.io/stashcache=true:NoSchedule||Private OSG nodes||No|
|nautilus.io/testing=true:NoSchedule||Node is broken||No|
|nvidia.com/gpu=Exists:PreferNoSchedule||Fence GPU nods from CPU jobs (Preferred! Jobs can still go on the node if there are no free CPU nodes)||No|
Running in group namespaces
Our cluster contains several sets of nodes dedicated to certain groups.
User can target ONLY THE GROUP NODES by using the nodeAffinity such as:
spec: affinity: nodeAffinity: requiredDuringSchedulingIgnoredDuringExecution: nodeSelectorTerms: - matchExpressions: - key: nautilus.io/group operator: In values: - group1
for large jobs to avoid taking over all shared cluster resources. Optionally a higher priority can be used for such jobs (talk to admins before using one).
Some nodes in the cluster don't have access to public Internet, and can only access educational network. They still can pull images from Docker Hub using a proxy.
If your workload is not using the public Internet resources, you might tolerate the
nautilus.io/science-dmz and get access to additional nodes.