Advances in artificial intelligence, advanced simulation, and growing global technological competition are placing supercomputing at the heart of Europe’s digital strategy. Beyond the cloud and traditional data centers, facilities such as the Barcelona Supercomputing Center (BSC) have become key players in scientific research, industry, and technological sovereignty in Europe.

To gain an inside look at how this infrastructure works, the Data Centre World – Tech Show Madrid team visited the Barcelona Supercomputing Center, one of Europe’s leading supercomputing centers and home to the MareNostrum 5 supercomputer.

 

Barcelona Supercomputing Center: From Academic Project to Critical Infrastructure

The Barcelona Supercomputing Center traces its origins to the 1990s, when Mateo Valero spearheaded the first high-performance computing (HPC) initiatives in Spain.

Today, the BSC is Spain's largest research center, with more than 1,400 professionals and activities closely tied to competitive European projects, which explains its sustained growth.

Unlike a conventional data center, the Barcelona Supercomputing Center is defined not only by its infrastructure, but also by its ability to generate applied scientific knowledge.

 

Supercomputing in Europe: A Model Different from the Data Center

The Barcelona Supercomputing Center's model differs from that of the major hyperscalers. Here, the infrastructure is not geared toward digital services, but exclusively toward scientific research.

Access to supercomputing resources is granted through competitive calls for proposals, in which researchers from across Europe apply for computing time.

This system is part of the European strategy led by the EuroHPC Joint Undertaking, which aims to ensure European technological sovereignty and the availability of world-class HPC infrastructure.

MareNostrum 5: The Heart of the Barcelona Supercomputing Center

Photo by the Barcelona Supercomputing Center

 

MareNostrum 5 is the centerpiece of the Barcelona Supercomputing Center and one of the most powerful supercomputers in Europe.

It has an approximate capacity of 314 petaflops, making it one of the most powerful HPC supercomputing systems on the continent. It consists of thousands of computing nodes, organized into racks and connected via high-speed networks.

Its architecture combines:

• CPU (general-purpose computing)
• GPU (acceleration for artificial intelligence)

When it went live in 2023, its runs ranked among the world’s top 20, solidifying the Barcelona Supercomputing Center’s role in the global supercomputing ecosystem.

 

The Evolution of Supercomputing: Exponential Growth

The evolution of the Barcelona Supercomputing Center reflects the growth of supercomputing in Europe.

The first MareNostrum operated at gigaflops, while MareNostrum 4 reached 13.9 petaflops. The current generation exceeds 300 petaflops, demonstrating exponential growth in computing power.

This rapid technological obsolescence necessitates constant upgrades to HPC infrastructure in order to remain globally competitive.

 

Energy and Efficiency in Supercomputing

One of the major challenges facing the Barcelona Supercomputing Center is energy management.

The supercomputer operates 24/7, which results in high energy consumption. To optimize its performance, the BSC uses a closed-loop liquid cooling system, which is more efficient than traditional air-cooling systems.

This system allows you to:

• Improving energy efficiency
• Reduce the environmental impact
• Reusing waste heat

Supercomputing efficiency thus becomes a key factor in the design of these infrastructures.

 

Technological sovereignty and European chips

The Barcelona Supercomputing Center plays a significant role in one of the sector’s key debates: technological sovereignty in Europe.

Currently, supercomputing systems rely heavily on chips and semiconductors developed outside Europe. This dependence poses a strategic risk.

For this reason, the BSC is participating in initiatives to develop European chips, with the aim of strengthening the continent's technological autonomy.

 

Artificial Intelligence and Technology Transfer

The role of the Barcelona Supercomputing Center is evolving toward a model that combines HPC, artificial intelligence, and technology transfer.

Through initiatives such as the AI Factory, the BSC provides companies, startups, and small and medium-sized enterprises with access to supercomputing and AI infrastructure, driving innovation across the business community.

In addition, the center promotes the creation of technology spin-offs, bringing research findings to market.

 

Quantum computing and digital twins

The Barcelona Supercomputing Center is also exploring emerging technologies such as quantum computing, which is still in the experimental phase.

Meanwhile, classical supercomputing enables the development of applications such as digital twins, which are used to simulate complex systems such as:

• climate models
• urban infrastructure
• biomedicine

These applications reinforce the role of supercomputing as a key tool for data-driven decision-making.

Photo by the Barcelona Supercomputing Center

 

The Future of Supercomputing in Europe

Supercomputing in Europe will play a key role in fields such as artificial intelligence, industry, energy, and healthcare.

Infrastructures such as the Barcelona Supercomputing Center are a key factor in strengthening Europe's technological competitiveness on the global stage.

In this context, work is already underway on the next generation of supercomputing, with the future MareNostrum 6 on the horizon, which will mark a new leap forward in computing power and energy efficiency, in line with the shift toward infrastructures increasingly geared toward artificial intelligence and European technological autonomy.

These challenges—energy, sustainability, talent, and technological autonomy—will shape the sector’s evolution in the coming years.

This debate will be one of the main themes at the Data Centre World Madrid, within the framework of Tech Show Madrid 2026, to be held on November 4 and 5 at IFEMA Madrid, where the role of supercomputing and critical infrastructure in the present and the digital future will be examined.

 

Request more information here:

https://www.techshowmadrid.es/formulario-expositores