University of Groningen https://wiki.hpc.rug.nl/ 2026-04-21T17:16:06+00:00 https://wiki.hpc.rug.nl/ https://wiki.hpc.rug.nl/_media/wiki/logo.png text/html 2026-04-08T21:52:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/connecting_via_vsc?rev=1775685146&do=diff Advanced: Connecting to Hábrók with Visual Studio Code Microsoft Visual Studio Code (VS Code) is a popular source code editor and IDE that is available for free and which can run on Linux, Windows and macOS systems. It allows connecting to remote environments and working from them and the installation of extensions to support different programming languages and make use of additional development tools. Because of this, it is suitable for connecting to Hábrók to perform software development task… text/html 2025-06-10T14:06:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/connecting?rev=1749564381&do=diff Connecting to the system Hábrók can be reached through a protocol called SSH (secure shell). The secure in the name implies that the network traffic is encrypted. This means that other people on the network cannot listen in to your username, password, any commands and data transfers that you have between your system and the Hábrók nodes. text/html 2025-07-31T08:49:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/linux?rev=1753951742&do=diff Linux Command line only Other than having ssh installed on your machine, this method has no further prerequisites for its use. You can just pick one of the login/interactive nodes, and connect to it using, for instance: ssh username@login1.hb.hpc.rug.nl After this you will be prompted for your password followed by the authenticator token. text/html 2025-10-23T15:50:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/login_nodes?rev=1761234636&do=diff Login nodes Hábrók has six login nodes that can be used to connect to the system. Besides redundancy reasons (you can always try another one if one of them is down), they all serve different purposes. Login nodes login1.hb.hpc.rug.nl and login2.hb.hpc.rug.nl text/html 2025-09-19T12:59:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/macos?rev=1758286792&do=diff macOS A connection to the cluster can be made from a terminal window using the Terminal app, which can be found in the Utilities folder of Applications. The command to log in is then: ssh username@login1.hb.hpc.rug.nl Here username should be replaced by your username, e.g. your p or s number (in lowercase). After that, press the text/html 2023-07-27T08:38:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/remote_desktop?rev=1690447112&do=diff Advanced: Remote desktop Besides the functionality offered by the portal, no remote desktop functionality has been set up for Hábrók yet. text/html 2023-03-20T11:55:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/ssh_key_login?rev=1679313347&do=diff Advanced: Using SSH keys If you do not want to type in a password every time you log in into a machine an ssh key can be used as an alternative identification method. Such a key must still be protected by a password to prevent other people from using it, but a key manager can be used to prevent you from typing in this password multiple times. text/html 2020-08-27T09:43:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/start?rev=1598521428&do=diff Connecting to the system index text/html 2026-01-27T12:18:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/web_portal?rev=1769516304&do=diff The Web Portal for Hábrók is now available, but some functionality is still lacking. For instance, the interactive apps for TensorFlow and PyTorch are not available yet. Web Portal We have implemented a new web portal for Hábrók, based on software developed at the text/html 2025-04-25T08:38:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.hpc.rug.nl/habrok/connecting_to_the_system/windows?rev=1745570291&do=diff Windows Available software Windows users will need to install client software in order to be able to login into the cluster. The following pieces of software are useful: MobaXterm MobaXterm is a free for personal use SSH client, SFTP client and X server. If it is not available on your machine, it can be downloaded from