Practical exercise 0: First use of HPC machine, Hello World!

In this practical exercise you will:

• Access ARCHER2 using SSH.

• Become familiar with linux and the command line.

• Compile the provided code example.

• Submit a program to run using the batch system.

• Understand the difference between message passing and threading in relation to the hardware of a super computer.

The focus of this exercise will be to run a series of hello world programs that help to illustrate how parallelism works on a supercomputer.

• Part 1: Logging in via SSH
  • SSH client
  • Connecting to ARCHER2
• Part 2: Compiling and running Hello world!
  • Serial
  • Threading
  • MPI
  • Hybrid
  • Conclusion