CUDA C++ new code for multiple GPUs Masters Physics Thesis guide

I asked my professor for my masters thesis and he sent me this:

if you are interested in a programming related thesis in my group, you might want to have a look at the following codes that we develop and maintain:

Our new code for multiple GPUs
https://github.com/christophmschaefer/miluphpc

based on our older code for a single GPU
https://github.com/christophmschaefer/miluphcuda

I’ve attached the three papers (two published and one submitted) describing the codes.

SO I NEED HELP TO LEARN THIS AND GET STARTED