Special use

Our cluster combines various hardware resources from multiple universities and other organizations. By default you can only use the production nodes (see the resources page of the portal).

You can only tolerate nodes mentioned on this page. All other tolerations can be used only after explicit permission from admins.

If your project is related to one of these persons:

Ken Kreutz-Delgado	Tajana Simunic Rosing	Amit K. Roy Chowdhury	Walid Najjar
Nikil Dutt	Trevor Darrell	Lise Getoor	Anshul Kundaje
Gary Cottrell	Frank Wuerthwein	Hao Su	Dinesh Bharadia
YangQuan Chen	Jeff Krichmar	Charless Fowlkes	Padhraic Smyth
James Demmel	Yisong Yue	Shawfeng Dong	Rajesh Gupta
Todd Hylton	Falko Kuester	Jurgen Schulze	Arun Kumar
Ron Dror	Ravi Ramamoorthi	John Sheppard	Nuno Vasconcelos
Ramakrishna Akella	Manmohan Chandraker	Baris Aksanli	Dimitris Achlioptas
Ilkay Altintas	Brad Smith	Christopher Paolini	Jerry Sheehan

, which means you’ve specified the person as a PI in the namespace description, it will also be assigned to nodes tainted as Chase-CI (“chaseci”). This will give you more GPU nodes and shorter wait time.

In addition, there are GPU nodes attached to our cluster from two video rooms:

room	nodes	GPU type	used as general pool
UCSD Suncave	34	2 x 1080 or 2 x 1080Ti	no
UCMerced Wave	10	2 x 1080	no

Because these nodes can be used for demos at anytime, any job running on those can be cancelled without any warning. If you’re fine with this, you can use those by adding the corresponding toleration to your job:

spec:
  tolerations:
  - key: "nautilus.io/suncave"
    operator: "Exists"
    effect: "NoSchedule"
  - key: "nautilus.io/wave"
    operator: "Exists"
    effect: "NoSchedule"

If you want to use a specific node, use the nodeSelector:

spec:
  nodeSelector:
    kubernetes.io/hostname: <node_name>

Or use nodeAffinity to make more complex bindings:

spec:
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: nautilus.io/group
            operator: In
            values:
            - haosu
          - key: env
            operator: In
            values:
            - production

Currently we have other tolerations which are reserving nodes for specific groups or other purposes. You can not use those without prior approve from cluster admins.

While the university is closed for COVID-19, the suncave is not used for demos, and toleration is removed.

Other tolerations

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.