luajit2 backend for Cantor

I am happy to announce the new luajit2 backend for Cantor, that will be released with KDE 4.14. If you haven’t heard of Cantor yet, it is a KDE application that provides a notebook-like frontend for various programming languages, with a mathematical and scientific focus.

Computing the discrete Fourier transform as a matrix multiplication

I really like using the Lua programming language. It is has as nice and simple syntax and a very efficient implementation called luajit. Recently, I needed to do a lot of computations using matrices, linear algebra and the like, and I wanted to do this in Lua :). This personal need resulted in the creation of the lna (Lua Numerical Algorithms) library, that provides the following features:

Testing the intel_pstate CPU governor

I’ve heard about the classical ondemand CPU scaling governor on Linux being no longer fit for modern intel CPUs, so I’ve tested the new intel_pstate governor. On Ubuntu 13.10, this is done by adding intel_pstate=enable to the GRUB_CMDLINE_LINUX_DEFAULT line on /etc/default/grub and running update-grub.

Ubuntu 13.10 (Saucy) on a Lenovo z400 touch

After 7 years of intense usage, my ancient Acer notebook decided that it had already served his duty and went to retirement.