# Multigrid Hierarchy ## Compilation To run this example, compile in release mode using the following typical cmake/make build routine: ``` cd 02_mg_hierarchy mkdir build cd build cmake -DCMAKE_BUILD_TYPE=Release .. make -j8 ``` If all goes well, you should be able to find and run the executable `main_bin` directly with no arguments. ## Demo Show the construction of our multigrid hierarchy and visualize the corresponding prolongation operators between different levels. Press `0` `1` `2` to toggle between different levels.