The LUMI Supercomputer

LUMI (Large Unified Modern Infrastructure) is the first of three pre-exascale supercomputers built to ensure that Europe is among the world leaders in computing capacity. Norway, through Sigma2, owns part of the LUMI supercomputer, funded by the EU and consortium countries. More information about the Norwegian share of LUMI.

For Norwegian research and business, it is essential to have access to world-class computing power. This technology can solve significant societal challenges in disciplines such as climate, energy, environment and health. 

Read more about the system and who can use it below.

LUMI is the first pre-exascale supercomputer of the EuroHPC Joint Undertaking and is now Europe’s most powerful supercomputer. It ranked third on the Top500 list of the world's fastest supercomputers at its inauguration in June 2022.

LUMI´s theoretical power is more than 550 petaflops. This means 550 quintillion calculations per second and a sevenfold performance compared to the following European supercomputer on the list.

LUMI is a GPU-accelerated supercomputer enabling the convergence of high-performance computing, artificial intelligence, and high-performance data analytics. 

The largest partition of the system is the LUMI-G consisting of GPU accelerated nodes using future-generation AMD instinct GPUs. A smaller CPU-only partition, LUMI-C, features third-generation AMD Epyc CPUs. 

Researchers all over Europe can apply for access to LUMI’s resources, which means that all of Europe can benefit from this new research instrument. For Norwegian researchers, LUMI is available as a resource in the same way as the other Sigma2 resources, with the same application and evaluation process.

LUMI is aimed at AI and HPC workloads that can take advantage of GPU accelerators. LUMI-G is based on AMD GPU Accelerators and AI researchers using one of the larger frameworks, such as TensorFlow and PyTorch, will be able to use LUMI-G directly.

LUMI-C is the compute partition of LUMI, dealing with CPU-based HPC applications. Users interested in this partition should also consider the other clusters already in operation in Norway.

As part of EuroHPC, LUMI is also available for industry usage. The conditions for this type of usage and procedure for applications are still being worked out. Please contact the Norwegian Competence Centre for more information. 

If you wish to use LUMI, you apply for access through the regular Sigma2 call for resources prior to each period start (1 April and 1 October). We manage LUMI as an extension to the national e-infrastructure resources. 

Please contact us at if you want to know more about LUMI and how to get access. 

Deploying world-class exascale-level supercomputing infrastructure in Europe. This is the main goal of the EuroHPC Joint Undertaking - a joint initiative between the European Union, European countries, and private partners. Half of the LUMI resources belong to the EuroHPC Joint Undertaking, and the other half of the resources belong to the participating countries, currently estimated to be 2% for Norway. Each consortium country has a share of the resources based on the country’s contribution to the LUMI funding, and the countries will allocate these resources according to local considerations and policies.

The LUMI consortium consists of the following countries: Belgium, Czech Republic, Denmark, Estonia, Finland, Iceland, Norway, Poland, Sweden, and Switzerland.

The EuroHPC JU is behind 8 new pan-European supercomputers – 3 pre-exascale (among them LUMI) and 5 exascale, some still under deployment and some currently operational.

Illustration of the LUMI HPE Cray EX cabinets.
Illustration of LUMI, an HPC Cray EX Supercomputer. © Hewlett Packard Enterprise. 


LUMI is installed at CSC's datacentre in Kajaani, Finland and hosted by the LUMI consortium. It is powered 100% by hydroelectricity, and its waste heat will cover 20% of the Kajaani's annual district heating needs. 

LUMI documentation (External)

1 system 550+ pflops/s Peak performance. Illustration.

computing power equals 1.5 million modern laptop's capacity. Illustration.

117 PB Storage. Illustration.

Illustrations © CSC.