Eviden Launches Jupiter, Europe's Most Powerful Supercomputer

September 5, 2025 by Mai Tao

Eviden , the Atos Group business unit specializing in advanced computing, says its in-house-built Jupiter Booster – a partition designed for large-scale simulations and AI training – has been inaugurated today.

The event took place at the Jülich Supercomputing Centre in Germany, in the presence of Friedrich Merz, Federal Chancellor of Germany, Hendrik Wüst, Minister-President of North Rhine-Westphalia, Dorothee Bär, Federal Minister for Research, Technology and Space and Ina Brandes, Minister for Culture and Science of North Rhine-Westphalia.

Already listed as Europe's most powerful HPC and AI system and the 4th most powerful in the world, Jupiter is set to be the first in Europe to surpass the threshold of one quintillion calculations per second – the equivalent power of 10 million modern desktop computers.

Procured by the EuroHPC JU initiative and hosted at the Jülich Supercomputing Centre in Germany, Jupiter combines compute-intensive power for the Eviden-built booster partition and unrivalled energy-efficiency with sovereign data control, embedded into Eviden's Modular Data Center approach – a unique solution to build a complete data center with pre-built and interchangeable modules.

The Jupiter booster partition, built by Eviden, integrates 24,000 Nvidia GH200 Grace Hopper Superchips interconnected with Nvidia Quantum-2 InfiniBand networking optimized for highly parallel applications such as training AI models or numerically demanding simulations.

By leveraging Eviden's patented, market leading Direct Liquid Cooling technology, Jupiter has demonstrated an unrivalled energy efficiency, a performance that earned its Jedi module the #1 position in the June 2025 Green500 ranking.

From dramatically improving extreme weather forecasts to accelerating breakthroughs in climate science, sustainable energy, AI, quantum research, and structural biology, Jupiter will empower researchers, industries, public organizations across Europe to drive innovation at an unprecedented scale.

Artificial intelligence: Jupiter's power can dramatically accelerate the training of large language models, enabling breakthroughs in generative AI such as OpenGPT-X, a multilingual model with a focus on German.

This high-performance infrastructure allows researchers to train models faster and more efficiently, advancing AI capabilities across science, industry, and media.

From weather forecasting to climate simulation: With the power of the Jupiter supercomputer, researchers can run the Icon atmospheric model at unprecedented resolution, enabling highly detailed simulations of future climate scenarios.

This breakthrough will significantly improve forecasts of extreme weather events and long-term climate changes, helping scientists better understand the impact of rising CO2 levels.

Brain cells simulated in the electronic brain: Using the exascale power of Jupiter, researchers can simulate the brain's neural networks with unprecedented biological realism – right down to individual neurons and their dynamic behavior.

These high-resolution models, powered by software like Arbor, could deepen our understanding of learning, memory, and neurodegenerative diseases such as Alzheimer's.

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