Contact   howto

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...

Login   howto

Science login 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 howto for more information....

Hardware servers   howto

Servers and Workstations C&CZ manages ca. 900 Linux workstations and servers, and ca. 900 servers and workstations with MS-Windows, primarily in the domain science.ru.nl. Dual boot Windows/Linux machines are counted twice. The ca. 350 servers are distributed over three datacenters, ca. 150 have a fast network connection (25 Gb/s). Workstations C&CZ manages (for departments) workstations with Ubuntu Linux or MS-Windows. There are also workstations in the PC-rooms for general use by anybody with a Science login, but also by all RU employees and students and guests with a temporary login....

Data storage   howto

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....

High Performance Computing   howto

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. Financial model The faculty in general doesn’t own (m)any compute nodes, departments purchase their own servers (we can help configure these), which we install and manage during their lifetime. All clusternodes can be integrated in our SLURM cluster management....

ZFS Volumes   howto

A new storage option has been developed by C&CZ. This page will show the technical details and properties of this storage, which will hopefully help you make a decision if this is something you want. Any storage we handout we call a “volume”. For these ZFS volumes: Size Storage size can be as large as you want, but smaller than the amount we can put in a single machine. Currently (2024+) we can buy machines with roughly 140-200 TB storage....

Cleanup disk space   howto

You might have received an email that your personal or group network disk is almost full. This articles describes some tools to identify large files/directories and cleanup disk space. Finding large files / directories with WinDirStat (graphical, Windows) WinDirStat is a disk cleanup tool for Windows that provides a visual representation of disk space usage. It helps you to quickly identify and understand which files and folders are consuming the most space....

Carbon Connects   howto

Project: Carbon Connects Funding Party NW Europe Link to official website: https://sites.google.com/view/c-toolbox/home

Disk quota   howto

Your personal quota only determine the amount of disk space your own data may occupy and the number of files and folders you may have on your Windows U:\ disk or Linux home directory. Quotas may be active on other disks as well, however not all disks have quotas. The mail servers also use quotas to limit the disk space of each user’s mailbox. Windows On Windows desktops where the home directory is available as U: or H: disk right click on the disk, then choose Properties to view the amounts of used and available personal disk space in kbytes....

Module command for optional software versions   howto

On C&CZ managed Ubuntu hosts, the “module” command is available. This makes it easy to use specific versions of available software. To view which modules are available, use: module avail and to use Matlab-R2023a: module add Matlab-R2023a` For more info, see the Environment Modules website.

Updated Aug 25, 2023  ·  Peter van Campen · Created Aug 25, 2023