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 32.5: Learning to use modern tools, part 5a: Version control systems (VCSs), Subversion
Version control is a central component of software development that allows (i) to go back in the development history of a program to find out which change, when and by whom, introduced a feature or a bug, and (ii) allows multiple people to collaborate on projects. It works by having a place somewhere on the internet that keeps the current development sources, avoiding that developers have to send each other files with their modifications.
In this lecture, I introduce the general concepts of version control, and discuss and demonstrate the main ideas of one of the two big, open source version control systems, subversion. You can find (much) more information in the online version of the definitive book on subversion.
Slides: click here