About LUMI and EuroHPC

The next era of High-Performance Computing

The new LUMI website is online at www.lumi-supercomputer.eu, please check the website for latest information about LUMI.


The European High-Performance Computing Joint Undertaking (EuroHPC JU) is pooling European resources to develop top-of-the-range exascale supercomputers for processing big data, based on competitive European technology.

One of the pan-European pre-exascale supercomputers, LUMI, will be located in CSC’s data center in Kajaani, Finland.

The supercomputer will be hosted by the LUMI consortium. The LUMI (Large Unified Modern Infrastructure) consortium countries are Finland, Belgium, Czech Republic, Denmark, Estonia, Iceland, Norway, Poland, Sweden and Switzerland.

LUMI will be one of the world’s best known scientific instruments for the lifespan of 2021–2026.

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EuroHPC Joint Undertaking

EuroHPC is a key factor for the whole of Europe to promote digitalisation. To bridge the high-performance computing (HPC) and digital skills gap is an integral part of the ecosystem. The combination of HPC and other technologies such as big data, cloud services, and artificial intelligence is another essential part of the European digital agenda. Recent advances in artificial intelligence, such as deep learning, which are shaping the societies today and even more so in the future, are not possible without high-performance computing. 32 countries have signed the EuroHPC Declaration. Have a look at this video explaining European HPC strategy.

The EuroHPC Governing Board decided to place the exascale precursor supercomputers in Finland, Italy and Spain.

The budget for the EuroHPC JU in 2019–2020 is over 960 million Euros, which includes public investments from the EU and participating states as well as investments from private partners. The total budget of the EuroHPC pre-exascale system in CSC’s data center in Kajaani is over 202 million Euros. Half of this funding comes from the EU and the other half from the consortium countries.

What is an exaflop?

Exascale supercomputers are the next big step in high-performance computing. One exaflop means processor computing power corresponding to 1018 floating point calculations per second or one trillion calculations per second. When installed and launched in the beginning of 2021, the LUMI supercomputer in Kajaani, Finland, will have processor peak computing power of over 200 petaflop/s or 0.2 exaflop/s. In other words, about ten times more powerful than the most powerful supercomputer currently in Europe.

LUMI: one of the most competitive supercomputers in the world

  • At the time of installation, one of the world’s fastest computer systems, the theoretical computing power of more than 200 quintillion calculations per second.
  • Performance more than tenfold compared to Europe’s fastest supercomputer today (Piz Daint, Switzerland).
  • LUMI’s computing power is equivalent to the combined performance to 600,000 of the latest MacBook Pro computers. These would form a 9.3-kilometer tower.
  • Its data reading speed from disk to memory corresponds to the simultaneous operation of 18500 Blu Ray players.
  • LUMI is the size of a basketball court.
  • Storage: over 60 petabytes with a sizeable flash layer providing more than 1 terabytes of bandwidth.
  • Used technologies: The supercomputer achieves its high performance with a large number of nodes with accelerators (GPUs). In addition the system is complemented by a CPU only partition, IaaS cloud services and a large object storage solution.



Machine room construction: September 2019 – October 2020
System procurement: November 2019 – July 2020
System installations: Q4/2020
Operations: Q1/2021-Q4/2026

Read more about the LUMI consortium.

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