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/cogrob	cogrob namespace	cogrob namespace
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 02-14-2025	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.

This work was supported in part by National Science Foundation (NSF) awards CNS-1730158, ACI-1540112, ACI-1541349, OAC-1826967, OAC-2112167, CNS-2100237, CNS-2120019.