JUPITER Exascale Supercomputer, lead customer
October 5, 2023
The first European exascale supercomputer will be fueled by Rhea1, the energy-efficient HPC-dedicated microprocessor.
Our solution
From climate modelling to drug discovery, high-performance computing (HPC) enables scientists and engineers to tackle the most demanding computational challenges on a large scale.
SiPearl CPUs are specifically designed for these workloads: they combine a high number of cores, high-bandwidth memory and an energy-efficient architecture to maintain maximum throughput in massively parallel applications.
They will power the two first European exascale supercomputers belonging to EuroHPC JU: Rhea1 will be integrated into the JUPITER machine based in Germany and Rhea2 will be part of Alice Recoque in France.
Typical workloads
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Climate and weather modelling
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Computational fluid dynamics
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Drug discovery and genomics
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Advanced materials simulation
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Nuclear and plasma physics
Why SiPearl
→ Rhea1 includes 80 Arm Neoverse V1 cores with 4 stacks of HBM memory for sustained performance on memory-bound workloads.
→ Energy-efficient architecture that reduces total cost of ownership at exascale.
→ Designed in Europe, supporting strategic compute sovereignty for research institutions.
First commercial awards
SiPearl, selected for Alice Recoque
November 18, 2025
SiPearl will equip the new French exascale supercomputer, Alice Recoque, which will be built by Eviden.
Read the press release: