1407: NFS problems under investigation

When we moved the gateways of our networks from the old location to the new firewalls, we have received some complaints about NFS filesystems having slowness, longer delays or unavailability. In general NFS should never be a requirement for a clusternode job if you can avoid it, because this I/O is always much slower than local I/O from /scratch. We are investigating how we can optimise the network to resolve this issue, but we are hard pressed to know the exact cause of the problem....

Use eduVPN instead of Science VPNs VPNsec/OpenVPN   news

For RU students and employees, the SURF service eduVPN has many advantages over the older Science VPNs: VPNsec and OpenVPN. It’s very easy to install and use eduVPN on Windows/macOS/Android/iOS/Linux and you have access to all Science services that are also available through the Science VPNsec/OpenVPN. We list it on our VPN page as the primary VPN to use. We advise users of the Science VPNs to move over to eduVPN....

Updated Feb 23, 2024  ·  Peter van Campen · Created Feb 23, 2024

New version of Mathematica 14.0.0   news

A new version of Mathematica (14.0.0) has been installed on all C&CZ managed Linux systems, older versions can still be found in /vol/mathematica. When connected wired or wireless on campus or through VPN, the software for Windows, Linux and macOS can be found on the C&CZ Install disc. During the installation you must specify: License server: mathematica.science.ru.nl License: L4601-6478 According to the Mathematica Quick Revision History: “Version 14.0 continues to expand the scope and breadth of our computational coverage while streamlining and polishing existing areas....

Updated May 31, 2024  ·  Peter van Campen · Created Feb 16, 2024

SageMath on loginservers and JupyterHub, Digital Security and Math clusternodes   news

The free open-source mathematics software system SageMath version 9.5 has been installed on Science loginservers and JupyterHub, Digital Security and Math clusternodes. The mission of SageMath is to create viable free open source alternative to Magma, Maple, Mathematica and Matlab. SageMath builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more. Access their combined power through a common, Python-based language or directly via interfaces or wrappers....

Updated May 31, 2024  ·  Peter van Campen · Created Feb 16, 2024

Large response survey services provided by C&CZ   news

We are pleased that we received 330 completed surveys. Many of these were very positive. Some contained suggestions for improvements or new services. We’ll analyze the results further in the next months.

Updated Jan 23, 2024  ·  Peter van Campen · Created Jan 23, 2024

Short survey regarding the services provided by C&CZ   news

We would like to draw your attention to a short survey regarding the services provided by C&CZ. We would really appreciate it if you would take a few minutes to provide us with feedback. Based on the results, we will determine how we can further improve our services for the faculty in the coming years. Thank you very much in advance for your response! Note The survey has now been closed....

Updated Jan 10, 2024  ·  Bram Daams · Created Dec 13, 2023

Policy changes for outgoing email (SMTP)   news

To counteract email spoofing, the following changes are forthcoming, affecting the way email can be sent. Science SMTP authentication requirement from specific networks Currently, it is possible to send emails via SMTP without authentication when connected to the campus network. For user devices, it has always been recommended to use authenticated SMTP. Starting from January 8, 2024, C&CZ will no longer allow unauthenticated SMTP from user networks. The first networks for which this policy will be enforced will be Eduroam and VPN....

Updated Dec 13, 2023  ·  Peter van Campen · Created Dec 12, 2023

Maple license continued for 2 concurrent users   news

The license of Maple has been continued in 2024 as a 2-user license. All FNWI employees and students are allowed to use Maple. If you want to use Maple, please contact C&CZ.

Updated Dec 8, 2023  ·  Peter van Campen · Created Dec 1, 2023

New A0 poster printer, twice as fast   news

Because the old poster printer broke down, we ordered an HP Designjet Z6 44 inch postscript. The new printer is twice as fast, so the speed of service will be even better. See the poster printer page for all details.

Updated Nov 21, 2023  ·  Peter van Campen · Created Nov 21, 2023

New Intel compilers (oneAPI Base and HPC Toolkits)   news

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, clusternodes with Ubuntu 22.04 and loginservers. When these compilers are available, the module command module avail will list among others “compiler/latest”. Then e.g. the Intel C (icc) and Fortran (ifort) compilers can be used after typing...

Updated May 30, 2024  ·  Peter van Campen · Created Oct 27, 2023

New version of OriginLabPro (2023b)   news

A new version (2023b) of OriginLabPro, software for scientific graphing and data analysis, can be found on the Install-disk. See the website of OriginLab for all info on the new version. The license server supports this new version. There is a support contract until August 2026. Departments within FNWI can request installation and license info from C&CZ, also for standalone use. Installation on C&CZ managed PCs is being planned. In case of questions contact C&CZ....

Updated Oct 10, 2023  ·  Peter van Campen · Created Oct 10, 2023