CEA (Commissariat à l’Energie Atomique et aux Energies Alternatives) is a major French public research and technology agency. The Institute of Research into the Fundamental Laws of the Universe (CEA/DSM/Irfu) is part of the Direction of Matter Science, its physics research branch. Irfu carries fundamental research in High Energy Physics, Nuclear Physics and Astrophysics, as well as R&D in accelerator, cryomagnetism, and detector technology.

Irfu is strongly involved in the CERN LHC programs through its Atlas, CMS and Alice contributions, and is also pursuing significant actions for instrument development and data management in large international collaborations such as Euclid and Cerenkov Telescope Array. In the field of astrophysics, Irfu leads COAST, a strong high level program of simulation of the universe at various scales, supported by computational HPC resources and visualization tools.

For what concerns computing resources, Irfu is in partnership with CNRS/IN2P3 to operate the Lyon Computing Center (WLCG Tier1/2 and others) and the GRIF Ile de France regional grid (WLCG Tier2, shared between 6 regional physics laboratories).