Handbook of European HPC projects


European Processor Initiative (SGA2)

The European Processor Initiative (EPI) is a cornerstone of the European initiative towards strategic autonomy in HPC, chip technologies and infrastructure. The project has completed its first three-year phase (2018-2021), delivering cutting-edge technologies for European sovereignty such as the Rhea General-Purpose Processor (GPP) and a proof-of-concept implementation of European accelerator technology.  

The second phase of the project will build on the achievements of the first phase with the following objectives: 

  • Finalise the development and the bring-up of the first generation of low-power processor units; 
  • Develop the second generation of the GPP applying technological enhancements targeting the European Exascale machines;  
  • Develop the second generation of low power accelerator test chips, usable by the HPC community for tests; 
  • Develop sound and realistic industrialisation & commercialisation paths and enable the long-term economical sustainability with an industrialisation path in the edge computing area, demonstrated in a few well-chosen proofs of concept like autonomous shuttles or video surveillance. 

EPI focuses on processor technologies based on ARM and RISC-V instruction set architectures (ISA) to address the central challenge of developing a competitive European microprocessor and accelerator including the required technology to integrate and use the resulting products for HPC and other applications.


Contact email

European Processor


Coordinating Organization:
Atos (Bull SAS), France

Project Timespan
2022-01-01 – 2024-12-31

Other Partners:
  • BSC – Barcelona Supercomputing Center, Spain
  • Infineon Technologies AG, Germany
  • SemiDynamics technology services SL, Spain
  • CEA – Commissariat à l’Energie Atomique et aux Energies Alternatives, France
  • Chalmers Tekniska Hoegskola, Sweden
  • ETHZ – Eidgenössische Technische Hochschule Zürich, Switzerland
  • FORTH – Foundation for Research and Technology – Hellas, Greece
  • GENCI – Grand Equipement National de Calcul Intensif, France
  • IST – Instituto Superior Technico, Portugal
  • FZJ – Forschungszentrum Jülich GmbH, Germany
  • UNIBO – Alma mater studiorum – Universita di Bologna, Italy
  • UNIZG-FER Sveučilište u Zagrebu – Fakultet elektrotehnike i računarstva, Croatia
  • Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V., Germany
  • E4 Computer Engineering SpA, Italy
  • Università di Pisa, Italy
  • Kalray SA, France
  • Extoll GmbH, Germany
  • Bayerische Akademie der Wissenschaften / Leibniz Rechenzentrum (LRZ), Germany
  • Elektrobit – Automotive GmbH, Germany
  • Prove & Run, France
  • KIT – Karlsruhe Institute for Technology, Germany
  • Menta SAS, France
  • SIPEARL SAS, France
  • Kernkonzept, Germany
  • Leonardo, Italy
  • ZeroPoint Technologies, Sweden