Building on the successful BXI (BullSequana eXascale Interconnect) European HPC Interconnect, and as a direct continuation of the RED-SEA project, NET4EXA will continue the development of the next generation of European Interconnects (BXIv3).

The earlier versions BXIv1 and BXIv2 have been deployed in European supercomputers ranking among the TOP15. Designed for the challenges of exascale computing and the growing needs of HPC and AI, BXI provides a high-performance and energy-efficient interconnect solution.

With the introduction of Eviden’s BXIv3, Ethernet has been chosen as the standard protocol, providing an open and globally adopted platform that avoids the limitations of closed proprietary systems, fosters flexibility and interoperability, and enables a broader user base to benefit from advanced HPC and AI capabilities.

The project will showcase a fully functional Pilot at TRL 8, poised for adoption and integration into exascale and post-exascale European supercomputers.

Finally, NET4EXA will contribute by offering analysis and preliminary design for upcoming interconnect features, thus paving the way for continued progress in the field. In particular, the project will prepare the subsequent version, BXIv4, where the focus will be on the development of silicon photonics pluggable transceivers, opening the path towards even higher bandwidth, scalability, and energy efficiency.