HOW SUPERCOMPUTING DEMOCRATISES AI Digital twin technology is the practice of creating a computer model of an object such as a machine or a human organ, or a process like the weather. By studying the behaviour of the twin, it is possible to predict the behaviour of the real-world counterpart, using that knowledge to address problems before they occur. Digital twin technology is undergoing tremendous change, thanks to increases in the processing capabilities of high-performance computing (HPC) technologies and the use of artificial intelligence (AI) software. Formula One racing carmakers are creating digital twins of their cars and testing them in virtual wind tunnels. Medical companies are building digital twins of organs such as the heart to observe how they might respond to various interventions. Weather organisations are building digital twins of storm systems.