VSC/Slurm Tips and Tricks

This is not official documentation for the Vienna Scientific Cluster. For this check the VSC Wiki. Instead, this is my personal cheat sheet of things that are not well documented elsewhere. Also while the content is focused on the VSC, most of the things mentioned here also apply to similar setups that use Slurm at other universities.

Visualizing Point Clouds

Assuming you have a dataset of particles (e.g. dark matter particles in cosmological simulation, SPH-particles, etc.) and their coordinates, there are multiple ways to browse through them as a 3D point cloud.

How to use Open Data from Vienna in QGIS and other software

The city of Vienna publishes a lot of datasets under a free license (CC BY 4.0 and a large fraction of them are geospatial data (like the list of parking zones I use in my parking app).

How to install GlitchTip without Docker

You like the error tracking provides, you want to self-host it, but the setup takes up too many resources? Then might be something for you. It is a FOSS reimplementation of the sentry backend with most important features. You can install it using docker following their guide, but if you like me like to install things from stretch without docker, then this guide might be for you.

How to stream audio of a single program/game using OBS and PulseAudio

You want to stream a game like the Jackbox Party packs to your friends, but use the same computer for voice chat at the same time without that audio appearing on the stream?

Then this might be a solution.

How to Install Jitsi Meet on Debian or Ubuntu

Installing Jitsi Meet on your own server allows you to Voice-/Videochat with multiple people and use features like screen sharing. Unlike other services it works without accounts or desktop clients — you just need to share a link with others.