I'm going to use a more powerful server to run my simulations on it using a remote control software. It's my first time to try that. What are the things that I should be aware of? Do I have to install the codes that I'm using on that server too? How can I use it, please?

What is the difference between density functional perturbation theory (DFPT) and many-body perturbation theory (MBPT)? Also, please help me understand why approximations like PBEsol are considered as DFPT, whereas GW approximations as MBPT.