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Starbeamrainbowlabs Tjovik

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A computer science student who loves to explore and learn new things.

Blog posts

Resizing Encrypted LVM Partitions on Linux

I found recently that I needed to resize some partitions on my new laptop as the Ubuntu installer helpfully decided to create only a 1GB swap partition, which is nowhere near enough for hibernation (you need a swap partition that's at least as big as your computer's RAM in order to hibernate). Unfortunately resizing my swap partition didn't allow me to hibernate successfully in the end, but I thou… Read more →


The Spaceship | Why open-source is important

It was a day like any other: Captain Ralph of the small cargo ship SS carryalot was taking a shipment of bavarian noodles to Epsilon V in time for their annual noodle festival with his partner, Egbert the Engineer. Unfortunately though, he was having some FTL drive trouble. An hour or two previously, he docked with the layover station Alpha 9 to refuel, but yet the FTL drive suddenly abruptly cut… Read more →


Running multiple local versions of CUDA on Ubuntu without sudo privileges

I've been playing around with Tensorflow.js for my PhD (see my PhD Update blog post series), and I had some ideas that I wanted to test out on my own that aren't really related to my PhD. In particular, I've found this blog post to be rather inspiring - where the author sets up a character-based recurrent neural network to generate text. The idea of transcoding all those characters to numerical va… Read more →


PhD Update 6: The road ahead

Hey, I'm back early with another post in my PhD series! Turns out there was a bit of mix up last time, and I misplaced update 4 - so I've renamed the duplicate update 4 to update 5. Before we continue, here are all the posts in this series so far: PhD Update 1: Directions PhD Update 2: The experiment, the data, and the supercomputers PhD Update 3: Simulating simulations with some success PhD Updat… Read more →


Proteus VIII Laptop from PC Specialist in Review

Recently I bought a new laptop from PC Specialist. Unfortunately I'm lost the original quote / specs that were sent to me, but it was a Proteus VIII. It has the following specs: CPU: Intel i7-10875H RAM: 32 GiB DDR4 2666MHz Disk: 1 TiB SSD (M.2; nvme) GPU: Nvidia GeForce RTX 2060 In this post, I want to give a review now that I've had the device for a short while. I'm still experiencing some teeth… Read more →


Run a Program on your dedicated Nvidia graphics card on Linux

I've got a new laptop, and in it I have an Nvidia graphics card. The initial operating system installation went ok (Ubuntu 20.10 Groovy Gorilla is my Linux distribution of choice here), but after I'd done a bunch of configuration and initial setup tasks it inevitably came around to the point in time that I wanted to run an application on my dedicated Nvidia graphics card. Doing so is actually real… Read more →


Adventurous Accounts: The Pepperminty Wiki Android App

I've found recently that there are a growing number of things I haven't blogged about on here yet because I either haven't finished them, or I have run into difficulties. I'd like to start blogging about these projects here and there, so in this post I'm going to talk about the Pepperminty Wiki Android App. For those not in the know, Pepperminty Wiki is a wiki engine I've built myself from scratch… Read more →


Lua in Review 2

Back in 2015, I reviewed the programming language Lua. A few months ago I rediscovered the maze generation implementation I ported as part of that post, and since then I've been writing quite a bit of Lua - so I thought I'd return to the thoughts in that original post and write another language review now that I've had some more experience with the language. For those not in the know, Lua is a lig… Read more →


New website for Pepperminty Wiki

By now, Pepperminty Wiki is quite probably my longest running project - and I'm absolutely committed to continuing to support and improve it over time (I use it to host quite a lot of very important information myself). As part of this, one of the things I'm always looking to improve is the installation process and the first impression users get when they first visit Pepperminty Wiki. Currently, t… Read more →


Stitching videos from frames with ffmpeg (and audio/video editing tricks)

ffmpeg is awesome. In case you haven't heard, ffmpeg is a command-line tool for editing and converting audio and video files. It's taken me a while to warm up to it (the command-line syntax is pretty complicated), but since I've found myself returning to it again and again I thought I'd blog about it so you can use it too (and also for my own reference :P). I have 2 common tasks I perform with ffm… Read more →