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And while Setonix delivers 30 times the computational speed of Magnus and Galaxy, we expect it to require only slightly more energy, and our challenge remains to mitigate this use as far as we can. Our current supercomputer Magnus rates 453rd in the world for performance (Top500), and Setonix, if fully operational today, would rank in the top 10.
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The first step in the greening of HPC is better measurement, tracking and reporting of power use, particularly among the biggest supercomputing centres on the planet.Īs we install the first stage of Setonix, which will be the most powerful research supercomputer in the Southern Hemisphere, we have debuted on the Green500 which sits alongside the Top500 supercomputers by power. In other words, the supercomputer’s energy use is often a real-world energy saver - in this case, a half a million-dollar saving in CO2 emissions - but it is not enough to stop there. When a supercomputer like Magnus calculates the best way to maximise the use of gas turbines, that means the researchers behind this science don’t need to build a physical warehouse for that test to take place, for example, or operate machinery to generate those winds, or travel to a remote location where these tests can take place. There’s a philosophical element to this problem, of course.īecause supercomputers exist, and can be put to use in such a breadth of ways, other things do not need to exist. There is some good news, with estimates that HPC centres are likely to use 620 billion kWh less than was anticipated a decade ago, as both computing and renewable technology improves.īut energy use is still a major challenge, and as more users of supercomputers - major industry, university institutions and governments - have to declare the emissions throughout their supply chain, focus will inevitably turn to how much HPC contributes to that mix.
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It is estimated the information technology and computing sector contributes 2% of the world’s carbon dioxide emissions, with data centres and HPC facilities contributing a significant portion of that total. It’s no surprise, therefore, that the sector is striving to make HPC more energy efficient, speeding up our own energy transition even as we support the science to help other industries do the same. Running the world’s fastest supercomputer in Japan takes about 29 megawatts of power - 26MW at its most efficient - or enough to power about 40,000 Australian homes.
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In fact, it’s often argued that the green transition can’t take place without the digital and HPC transition occurring alongside it, driving and refining innovation and testing approaches at speed.īut here’s the rub: many HPC centres are themselves big users of energy, thanks to the requirements of powerful processors and the correspondingly powerful cooling needed to keep them operating. Whether it is helping maximise the output for wave power, investigating new materials for hydrogen, or making legacy gas turbines more efficient, supercomputers are playing a critical role in the energy transition future. Supercomputing will be a critical tool in helping the world avoid climate crisis - but the HPC sector has its own challenges ahead in improving environmental performance, writes Mark Stickells, executive director at Pawsey Supercomputing Centre.
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