SLURM batch software The Science cn-cluster uses SLURM for batch management. The cluster consists of 2 parts, determined by the ubuntu version, each has its own login node. Currently we have Login node Ubuntu version number of nodes cnlogin20 ubuntu 20.04 22 cnlogin22 ubuntu 22.04 91 Typically you login to the login node and use that to submit your jobs. Terminology term meaning node A node is a single machine in the cluster....
Tips for Wacom One from teacher Sebastiaan Terwijn A few tips for the use of the Wacom One pen display. To connect the device, you need a computer with both a USB and an HDMI connection. If your computer does not have these, you will need an extra converter cable, for example HDMI to DisplayPort or mini-DisplayPort. My Thinkpad has the latter. The Wacom One is significantly larger than a standard iPad (13 inch vs 10....
If accidentally one or more files are lost from a home-directory (U:-disk) or a /vol-directory or some other place on a C&CZ server, probably the files can be restored. To be present on backup, a file must of course have existed during a (nightly) backup. Different independent backup schemes are used : Daily backups to disk. Monthly backups to tape. Yearly backups to tape. Daily backup All server disk-partitions except temporary space like /tmp, /var/tmp, /scratch, are backed-up after each working day....
Wikis maintained by C&CZ lab.cs.ru.nl algemeen Science clean exaktueel gi hef icis-intra isp mbs microbiology natuurkundepracticum new-devices-lab Planco privacy tfpie theochem
Lending laptop pool General remarks The Faculty of Science has a pool of 60 RU-standard laptops that can be lent by employees and students of the Faculty. These are standard-RU laptops. They are almost identical in use to the pc’s in the computer labs. The main difference is that reservation is not through Housing & Logistics. The reservation of the laptops is administered by the Library of Science. Use for FNWI education has precedence....
How can I access my course file? The course files is an network disk that can be attached on campus. Off-campus, VPN must be used to attach this network disk. More info on how to attach a network disk and on using VPN is available. Linux users have the alternative to login with ‘ssh’ on the Science loginserver lilo, followed by a cd to /vol/cursusdossiers. Windows: At ‘File Explorer’, choose the option ‘Map Network Drive’, and type in file://cursusdossiers-srv....
New Intel compilers (Intel OneAPI Base and HPC Toolkits) The newest versions of the Intel compilers, available under the name Intel OneAPI, do no longer require a license, they are freely available. The 2023.2 version has been installed on C&CZ managed Ubuntu systems. When they are available, the module command module avail will list among others “compiler/latest”, so e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing...
Apache Setup In order to improve the security of websites, we have switched to a new setup for our webservers. Until recently we had just one apache httpd running on a webserver. Different websites were served through the apache virtualhosts mechanism. The main advantage of running just one httpd is that all websites share the pool of httpd processes. The main disadvantages are inter-website security and shared log files. The new setup that is chosen doesn’t have these disadvantages....
C&CZ has obtained a partner account at domain name registrar QDC, allowing us to register a .nl, .com, .org or .eu domain name quickly and easily. Many other extensions are possible but sometimes at significantly higher cost. The (technical) administration of such a domain name is controlled by C&CZ (the C&CZ Internet domain name servers). In this way Radboud University Nijmegen becomes the owner of the domain name instead of an individual employee of a department)....
students WWW by students All student associations of the Science Faculty have their own WWW service. These are Thalia (Computer Science), 1 Desda (Mathematics), 2 Sigma (Chemistry), 3 Marie Curie (Physics), 4 BeeVee (Biology), 5 Leonardo (Sciences), 6 Students who would like to start their own www service are advised to contact their association using the association’s website or by sending a mail to one of the mail addresses. If that doesn’t work out you can always visit C&CZ and talk to one of the system administrators to see if it is possible to start a new WWW service....