ESSENTIAL - you must install the VirtualBox that is linked below. This is required for the tutorial. You should arrive at the tutorial with the VirtualBox pre-installed. No time is available in the tutorial if you have not installed this (but you're welcome to buddy-up with someone who has it installed - we'll make sure this happens if you don't have the image).
It is essential that you install the VirtualBox that we provide, it is a 2GB download (it expands to 7GB on your hard-disk) and it contains all the essential packages for our tutorial.
You can find the download and install instructions on Ian's blog here: Tutorial Notes for Applied Parallel Computing (with VirtualBox)