Tutorial Overview

Tutorial overview

There are two kinds of tutorials for t8code: The general tutorials, which lead you step by step and show the basic usage of t8code.
Furthermore, there are feature tutorials, which detail on more advanced or additional features of t8code. You will find the code for these tutorials in the tutorials/ folder of t8code.

Building the tutorials

The tutorials are build together with t8code when you invoke make. In order to build them when using CMake, make sure that you set -DT8CODE_BUILD_TUTORIALS=ON, which is set by default.

General

• Step 0 Hello World - Setting up an application and using t8code's logging function.

• Step 1 Creating a coarse mesh - Building a simple coarse mesh.

• Step 2 Creating a uniform forest - Constructing a uniform forest on top of a coarse mesh.

• Step 3 Adapting a forest - How to refine and coarsen a forest.

• Step 4 Partition,-Balance,-Ghost - Modifying the forest further by partitioning, balancing and computing ghost elements.

• Step 5 Store element data - How to gather data of the local elements, exchange it and output it to a .vtu file.

• Step 6 Computing stencils - How to gather data from element's face neighbors and collect stencils in, e.g., finite difference computations.

• Step 7 Interpolation - How to interpolate data on an adapted forest.

• Build cmesh - A tutorial of how to create a cmesh in 2D and in 3D.

• Search algorithm - A tutorial for the hierarchical search to identify elements matching a user defined criterion.

Features

• Feature Curved meshes - A tutorial about the generation of curved adaptive meshes.