This tutorial introduces the European Environment for Scientific Software Installations (EESSI) and shows how to access and use scientific software through a shared, portable software stack.

A rendered version of this tutorial is available at https://ocaisa.github.io/eessi-tutorial/

• Access to a Linux system
• Basic command-line knowledge

• What is EESSI?
• Accessing EESSI
• Running software from EESSI
• Exploring available applications
• Use cases such as
  • EESSI as a base
  • EESSI in CI
  • Customising EESSI for a specific system (e.g., MPI, GPUs,...)