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 41.5: Parallelization on a cluster of distributed memory machines — Part 3: Distributed computing in deal.II and step-40
This lecture discusses the step-40 tutorial program in which we show how to do parallel computations in deal.II using MPI. It also presents an overview of the general philosophy one needs to have to successfully parallelize programs to very large numbers of processors — in the case of step-40, the program has been tested to 16,000 processors (and it would have probably scaled to even larger core counts if it had been possible at the time we were writing it to solve problems with PETSc that have more than 2 billion unknowns).
Slides: click here