Euro-processor switched on for functional assessment

The general availability of the CPU is scheduled for the end of 2026.

Rhea1 will equip the CPU cluster module of JUPITER, Europe’s first exascale supercomputer which is owned by EuroHPC, hosted and operated by Jülich Supercomputing Centre in Germany.

With more than 61 billion transistors (7.8 billion equivalent gates), Rhea1 is the most complex server CPU ever designed in Europe. It includes in a single package:

• 80 arm Neoverse V1 cores ensuring high compute performance and efficient performance per watt. Each core includes 2 x 256-bit Scalable Vector Extension (SVE) engines, enabling fast vector computations while optimizing area and energy use;
• Built-in High Bandwidth Memory, with 4 stacks of HBM, to provide a balanced solution ideal for supercomputing, big data and AI Inference applications, which are often memory bandwidth bound;
• 4 DDR5 interfaces supporting 2 DIMMs Per Channel (2DPC);
  104 lanes of PCIe Gen5 interface: up to 6 x 16 lanes + 2 x 4 lanes;

In addition to performance, customers are targeting it for back-door free and kill switch free security, energy-efficiency, flexibility and a mature software ecosystem.

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