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Special use

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).

All taints

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 Who can set manually
Public
nautilus.io/arm64 ARM64 node, make sure your image supports ARM64. If you want to solely use ARM nodes in your pod, set the affinity kubernetes.io/arch=arm64, automatically tolerating this taint. All
Reserved for group use
nautilus.io/bluefield2 Measuring and monitoring for SENSE @jjgraham
nautilus.io/csu-tide Reserved for the TIDE cluster @youngsu_kim
nautilus.io/csusb CSUSB reserved nodes. Namespaces: csusb-chaseci, csusb-hpc, csusb-cousins-lab, csusb-jupyterhub, csusb-mpi, csusb-salloum, prp-dvu-csusb
nautilus.io/fpga-testing Reserved for FPGA experiments and flashing @jjgraham, @msada
nautilus.io/mizzou Private use by Missouri researchers on Missouri resources Missouri Researchers
nautilus.io/prism-center RESERVED for PRISM Center @jjgraham
nautilus.io/stashcache Private OSG nodes @fandri
nautilus.io/sdsc-llm Reserved for an SDSC LLMs sdsc-llm
nautilus.io/suncave-head Suncave head node is only used for suncave operations suncave
nautilus.io/suncave Suncave operations until June 1st suncave
nautilus.io/genai-lab genai-lab, till 01-09-2025 Daniel Salas Olivia Alexander
msu-cache, um-cache Michigan State Cache for ATLAS @ivukotic
Set by system to user jobs
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
nautilus.io/large-gpu Node accepts 4- and 8-GPU jobs only. Set automatically. No
Reserved for system use
gitlab.com/issue There's a GitLab issue describing the problem No
nautilus.io/ceph Don't run any user jobs on ceph storage nodes No
nautilus.io/gitlab-issue There's a GitLab issue describing the problem No
nautilus.io/linstor-server Don't run any user jobs on linstor storage nodes No

Observable notebook with taints summary

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).

Other taints

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.