Starting in the spring 2013, I videotaped the lectures for my MATH 676: Finite element methods in scientific computing course at the KAMU TV studio at Texas A&M. These are lectures on many aspects of scientific computing, software, and the practical aspects of the finite element method, as well as their implementation in the deal.II software library. Support for creating these videos was also provided by the National Science Foundation and the Computational Infrastructure in Geodynamics.

Note 1: In some of the videos, I demonstrate code or user interfaces. If you can't read the text, change the video quality by clicking on the "gear" symbol at the bottom right of the YouTube player.

Note 2: deal.II is an actively developed library, and in the course of this development we occasionally deprecate and remove functionality. In some cases, this implies that we also change tutorial programs, but the nature of videos is that this is not reflected in something that may have been recorded years ago. If in doubt, consult the current version of the tutorial.

Lecture 13: step-4: A dimension-independent Laplace solver

step-4 is the the first program in deal.II where we make use of the dimension-independent programming paradigm that allows us to write programs that run in 2d and 3d (and 1d, if you want). The idea here is to write programs so that we can develop and debug them in 2d where computations are relatively cheap and then have the confidence to run the exact same code in 3d where everything is so much more expensive and time consuming.

Slides: click here