Getting started

The GRFolres code can in principle be run in serial on a desktop machine. However, for most problems of interest one will need to run the code in parallel. Therefore the instructions here describe how to compile the code in parallel, and assume that you are running it on a remote cluster.

Whilst there is no "typical" problem size, as an order of magnitude estimate a run might use 96-128 cores with 4-6GB of memory each (for smaller cores one can use more cores and share the memory) and take several hours to run.

The keys steps, which are detailed in this section, are as follows:

1. Follow steps 1,2 and 3 listed in the GRChombo wiki
2. Get and compile GRFolres
   • Compiling the code
3. Run one or all of the examples
   • Running examples
4. Visualise the hdf5 output, see GRChombo wiki