From Earlham CS Department
Revision as of 12:18, 8 November 2021 by Ajstroz18 (talk | contribs) (Compute (servers and clusters))
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This is the hub for the CS sysadmins on the wiki.


If you're visually inclined, we have a colorful and easy-to-edit map of our servers here!

Server room

Our servers are in Noyes, the science building that predates the CST. For general information about the server room and how to use it, check out this page.

Columns: machine name, IPs, type (virtual, metal), purpose, dies, cores, RAM

Compute (servers and clusters)

CS machines and cluster machines
Machine name Ip Addresses Metal or Virtual Description
Bowie Metal hosts and exports user files; Jupyterhub; landing server
Smiley fill in Metal VM host, not accessible to regular users
Web Virtual Website host
Auth Virtual host of LDAP user database
Code Virtual Gitlab host
Net Virtual network administration host for CS
Lovelace Metal Example
Hopper Metal landing server, NFS host for cluster
Sakurai Metal Example
HopperPrime fill in Metal Runs Backup
Monitor fill in Metal Server Monitoring
Bronte Metal Example
Layout 0 Metal Example
Layout 3 fill in Metal Example
Layout 1 fill in Metal Example
Layout 2 fill in Metal Example
Whedon Metal Example
Pollock Metal Example

CS machines:

Cluster Machines:

There are 6 machines currently not in use in the 6 spaces above Monitor on the Equitorial Guinea rack

Specialized resources

Specialized computing applications are supported on the following machines:


We have two network fabrics linking the machines together. There are three subdomains.

10 Gb

We have 10Gb fabric to mount files over NFS. Machines with 10Gb support have an IP address in the class C range and we want to add DNS to these addresses.

1 Gb (cluster, cs)

We have two class C subnets on the 1Gb fabric: (CS) and (cluster). This means we have double the IP addresses on the 1Gb fabric that we have on the 10Gb fabric.

Any user accessing * and * is making calls on a 1Gb network.

Intra-cluster fabrics

The layout cluster has an Infiniband infrastructure. Wachowski has only a 1Gb infrastructure.


We have a backup power supply, with batteries last upgraded in 2019 (?). We’ve had a few outages since then and power has held up well.


HVAC systems are static and are largely managed by Facilities.

See full topology diagrams here.

A word about what's happening between files and the drives they live on.

New sysadmins

These pages will be helpful for you if you're just starting in the group:

Note: you'll need to log in with wiki credentials to see most Sysadmin pages.

Additional information

These pages contain a lot of the most important information about our systems and how we operate.

Technical docs

Common tasks

Group and institution information