Onboarding on C&CZ

Contact

Bram Daams — Wed, 02 Nov 2022 10:08:04 +0100

For all ICT related questions and problems within FNWI please contact C&CZ.

Helpdesk & Sysadmin

phone	room	mail
+31 24 36 20000	`HG00.051`	helpdesk@science.ru.nl

Visiting address

We are located on in the front part of wing 5, ground floor of the Huygens Building (rooms HG00.051, HG00.509 and HG00.545). The helpdesk is available during office hours (8:30 - 17:00). During that time the office is staffed.

Full address: Huygens Building, HG00.051, Heyendaalseweg 135, 6525 AJ Nijmegen

About C&CZ

Bram Daams — Tue, 06 Oct 2026 11:47:47 +0000

C&CZ is the IT department for research and education of the Faculty of Science of Radboud University. We provide accounts, e-mail, storage, compute clusters, GitLab, software licenses, laptops, computer labs and more.

Overleaf

Miek Gieben — Mon, 24 Nov 2025 00:00:00 +0100

Over the years we’ve had some requests to run an Overleaf instance for science users. To integrate this well in our environment we would need the enterprise version, which costs about € 8,- per user per month. This is prohibitive expensive for us to run, because we would need to pay for all science users, so we will not be pursuing setting up Overleaf any further in the science domain.

There are alternatives for this setup, they may or may not work for your use case:

Login

Bram Daams — Tue, 26 Aug 2025 17:03:10 +0000

A Science login provides faculty students and employees access to services like networked storage, computer labs, JupyterHub, clusternodes and GitLab & Mattermost.

A Science login usually resembles your name and does not contain periods, capital letters or an at sign (@). For example johndoe.

All settings related to your Science login, like setting your password, MFA, storage, groups and email aliases can be managed in DIY. See the DIY article for more information.

For Students & Employees

To create your Science login:

Data storage

Bram Daams — Thu, 13 Mar 2025 12:36:19 +0000

Introduction

In our Faculty, different types of data storage are offered:

Storage class	Description	Risk for data loss
Home directories	Small (several GB), reliable, backed up storage for individuals	low
Network shares	Larger (1-200 TB), reliable, backed up storage for individuals or groups	low
Local storage	Not backed up storage on desktop computers and cluster nodes, likely to be lost in case of a hardware problem or when the machine gets reinstalled	high

Home directories

Your Science login comes with a home directory of 5GB at no costs. This is a safe place to store your work related documents. Home directories are stored on reliable hardware and backed up automatically. If you need more than 5GB of storage, you can enlarge it on DIY. Before doing so, you may want to clean up some data.

DIY

Miek Gieben — Mon, 10 Mar 2025 12:12:45 +0000

The DIY website that C&CZ maintains allows people to control certain properties of their science account and change/view their used services.

The pages here contain extra documentation for certain features. We strive to keep DIY intuitive and lean. Some things might require more explanation, instead of trying to fit this into the DIY site itself, we explain those here.

We maintain a glossary to document features on the DIY website.

Warning

High Performance Computing

Simon Oosthoek — Tue, 05 Nov 2024 00:00:00 +0100

At the faculty of science, C&CZ manages a number of compute clusters and we have our own computer room with a few dozen racks for server hardware and also some racks in the Forum computer room.

Managed clusters

The largest cn-cluster is heterogeneous: it holds nodes purchased by individual departments as well as a number of nodes purchased by C&CZ, which FNWI departments may use after approval. The cn-cluster includes nodes with a GPU with CUDA cores. All nodes use SLURM as cluster software; regular maintenance is performed according to the Compute Cluster Maintenance policy.

Mounting network shares

Bram Daams — Mon, 16 Jan 2023 15:12:45 +0000

What path to mount?

The storage page describes the paths for your home directory and network shares. Once you know what network share to mount, follow the steps for your operating system below.

Info

A VPN connection is required when accessing these paths from outside of the RU network.

If you have trouble connecting to a network share after following the steps below, do not hessitate to contact us. We’ll be happy to assist you!

Email

Bram Daams — Fri, 14 Oct 2022 00:00:00 +0200

Tip

Webmail

For quick access to your email, use our webmailer:

https://roundcube.science.ru.nl/

When Roundcube asks for an OTP code, use the one from the OTP app you enrolled in DIY.

Email settings

When setting up your e-mail programs, it is sufficient to only enter your e-mail address. This is what your Science email address looks like:

I.Lastname@science.ru.nl

All technical settings are then automatically filled in for you. If that does not work, or if it is necessary to fill in the details yourself, use the settings in the table below:

PCs & computer labs

Bram Daams — Mon, 19 Sep 2022 16:12:50 +0000

C&CZ manages a large number of machines that anybody with a Science-account can use. The PCs in the computer labs run Ubuntu Linux; the study area, the library and the laptop pool run Windows, where students can login with their S-number and RU-password.

C&CZ also manages (for departments) workstations with Ubuntu Linux. The computer labs are available for general use by anybody with a Science login, all RU employees and students, and guests with a temporary login.

JupyterHub

Malte Rösner — Wed, 31 Aug 2022 06:38:28 +0000

JupyterHub is a multi-user Hub that spawns, manages, and proxies multiple instances of the single-user Jupyter notebook server. It can offer notebook servers to a class of students, a scientific research project, or a high-performance computing group.

Please contact C&CZ if you plan to use or are interested in using the JupyterHub for your course or project.

The JupyterHub is available via https://jupyterhub22.science.ru.nl and you can login with your Science username / password combination.

Software licences

Fri, 24 Jun 2022 12:45:46 +0000

License servers

For several software packages there is a license server, that allows use of the software on all PCs while making sure that the total number of licenses in use does not exceed what has been bought. Most of these license servers use FlexNet by Flexera.

Science software licences negotiated by C&CZ

All info can be found on the Science licenses pages. Questions: please contact C&CZ.

Most software can be found on the install share. On a PC with MS-Windows (or a Linux “Samba client”), one can connect to the service:

GitLab

Bram Daams — Fri, 03 Dec 2021 16:33:36 +0000

About GitLab

“GitLab is an incredibly powerful open source code collaboration platform, git repository manager, issue tracker and code reviewer.” Quoted from the GitLab website

Logging in

Info

VPN

Wim Janssen — Fri, 24 Sep 2021 10:55:58 +0000

VPN

A VPN makes it possible to get secure access to the internet or to the campus network from anywhere. The computer at home (or anywhere on the internet) in the latter case becomes part of the campus network. In this way you can get access to services that are normally only accessible from computers on campus. The most common of such services are connecting to disk shares or to special servers.