MareNostrum 5: A Giant in Supercomputing

MareNostrum 5, located in Spain, holds the prestigious title of the fourteenth most powerful supercomputer globally, as ranked on the TOP500 list. This isn’t just a supercomputer; it is a “living” entity that continually evolves. Recently, it received a significant boost in funding for a critical upgrade focused on artificial intelligence (AI) model training and inference.

A Major Investment for Innovation

The Barcelona Supercomputing Center (BSC) announced an investment of approximately 129 million euros to enhance MareNostrum 5. This funding, secured through a collaboration with Fsas Technologies (Fujitsu) and Telefónica, will be co-funded 50% by the European High Performance Computing Joint Undertaking (EuroHPC JU) and the other 50% by Spain, Portugal, and Turkey. The upgrade is set to be implemented in the first half of 2026, marking a significant step in the supercomputer’s evolution. Detailed documentation can be found on the European Commission’s website.

Adapting for a New Era: Focus on AI

The upcoming update for MareNostrum 5 isn’t just a reiteration of previous capabilities but is solely focused on artificial intelligence and machine learning workloads. A key goal is to enhance European digital sovereignty, thus reducing technological dependencies and preventing unintentional technology transfers out of the EU.

The Shift from HPC to AI

MareNostrum 5’s expanded architecture will introduce specialized compute partitions dedicated to tasks such as large language model (LLM) training and inference. Currently, this supercomputer operates with five distinct partitions, providing a staggering 175.30 PFLOPS of Rmax power (FP64, Linkpack) or 215.40 PFLOPS according to EuroHPC. Its total power capacity reaches approximately 20 MW.

Targeting 30 Exaflops for AI

Aiming for 30 FP4 exaflops specifically for AI tasks is ambitious, especially when considering that the current power dedicated to traditional HPC is just 0.17 FP64 exaflops. These new FP4 exaflops are tailored for training and large-scale inference and shouldn’t be directly compared with their FP64 counterparts.

Hardware Innovations: NVIDIA on the Horizon

While the technical documentation lacks specific details on the hardware configuration, it does mention a GH72 partition, which bears similarities to the specifications of NVIDIA’s DGX GB200 NVL72 supercomputer. Minimum requirements, including 180 GB of HBM3e memory or higher, suggest potential compatibility with multiple high-performance GPU models, including NVIDIA and AMD options.

A Step Towards Semiconductor Independence

In conjunction with these developments, BSC has also announced progress in semiconductor design. The successful validation of the Cinco Ranch TC1 chip, developed by the Barcelona Zettascale Lab, represents a stride towards technological independence for the EU. Utilizing RISC-V architecture and Intel’s 3 nm technology, this chip operates at 1.25 GHz and marks a notable achievement in semiconductor design.

Strengthening European Supercomputing

The MareNostrum 5 upgrade is a vital component of EuroHPC’s broader mission to advance European supercomputing capabilities. Currently, Europe boasts 12 supercomputers, including notable systems like Jupiter in Germany and the incoming Alice Recoque in France, which are expected to be among the first exascale systems in Europe.

In conclusion, MareNostrum 5 is not just a supercomputer; it is a symbol of Europe’s ambition to lead in supercomputing and AI technology, ensuring its independence and fostering innovation within the continent.



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