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The European High Performance Computing Joint Undertaking (EuroHPC JU)

Our supercomputers

Today the EuroHPC JU has procured seven supercomputers, located across Europe.


Picture of LUMI supercomputer

LUMI is a pre-exascale EuroHPC supercomputer located in Kajaani, Finland. It is a Cray EX supercomputer supplied by Hewlett Packard Enterprise (HPE) and hosted by CSC – IT Center for Science.

375 petaflops
Sustained performance
550 petaflops
Peak performance
Compute partitions:GPU partition (LUMI-G), x86 CPU-partition (LUMI-C), data analytics partition (LUMI-D), container cloud partition (LUMI-K)
Central Processing Unit (CPU):The LUMI-C partition features 64-core next-generation AMD EPYC™ CPUs
Graphics Processing Unit (GPU):LUMI-G based on the future generation AMD Instinct™ GPU
Storage capacity:

LUMI’s storage system consists of three components. First, there is a 7-petabyte partition of ultra-fast flash storage, combined with a more traditional 80-petabyte capacity storage, based on the Lustre parallel filesystem, as well as a data management service, based on Ceph and being 30 petabytes in volume. In total, LUMI has a storage of 117 petabytes and a maximum I/O bandwidth of 2 terabytes per second.

Applications: AI,  especially deep learning, and traditional large scale simulations combined with massive scale data analytics in solving one research problem
TOP500 ranking:#21 in EU; #76 globally (November 2021)
Green500 ranking:#19 in EU; #60 globally (November 2021)
Other details:

LUMI takes over 150m2 of space, which is about the size of a tennis court. The weight of the system is nearly 150 000 kilograms (150 metric tons)



Leonardo is a pre-exascale EuroHPC supercomputer currently built in the Bologna Technopole, Italy. It is supplied by ATOS, based on a BullSequana XH2000 supercomputer and hosted by CINECA

249,47 petaflops
Sustained performance
323,40 petaflops
Peak performance
Compute partitions: Booster, hybrid CPU-GPU module delivering 240 PFlops, Data-Centric, delivering 9 Pflops and featuring DDR5 Memory and local NVM for data analysis
Central Processing Unit (CPU):Intel Ice-Lake (Booster), Intel Sapphire Rapids (data-centric)
Graphics Processing Unit (GPU):NVIDIA Ampere architecture-based GPUs, delivering 10 exaflops of FP16 Tensor Flow AI performance
Storage capacity:Leonardo is equipped with over 100 petabytes of state-of-the-art storage capacity and 5PB of High Performance storage
Applications:The system targets: modular computing, scalable computing applications, data-analysis computing applications, visualization applications and interactive computing applications, urgent and cloud computing
Other details:Leonardo will be hosted in the premises of the Tecnopolo di Bologna. The area devoted to the EuroHPC Leonardo system includes 890 sqm of data hall, 350 sqm of data storage, electrical and cooling and ventilation systems, offices and ancillary spaces


Picture of VEGA supercomputer

Vega is a petascale EuroHPC supercomputer located in Maribor, Slovenia. It is supplied by Atos, based on the BullSequana XH2000 supercomputer and hosted by IZUM.


6,92 petaflops
Sustained performance
10,05 petaflops
Peak performance
Compute partitions:CPU partition: 960 nodes, 256GB memory/node, 20% double memory, HDR100 & GPU partition: 60 nodes, HDR200
Central Processing Unit (CPU) :122.800 cores, 1920 CPUs, AMD Epyc 7H12
Graphics Processing Unit (GPU):240 Nvidia A100 cards
Storage capacity:High-performance NVMe Lustre (1PB), large-capacity Ceph (23PB)
Applications:Traditional Computational, AI, Big Data/HPDA, Large-scale data processing
TOP500 ranking:#35 in EU; #120 globally (November 2021)
Green500 ranking:#59 in EU; #231 globally (November 2021)
Other details:Wide bandwidth for data transfers to other national and international computing centres (up to 500 Gbit/s). Data processing throughput 400GB/s from high-performance storage and 200Gb/s from large capacity storage



MeluXina is a petascale EuroHPC supercomputer located in Bissen, Luxembourg. It is supplied by Atos, based on the BullSequana XH2000 supercomputer platform and hosted by LuxProvide



Sustained performance
18,29 petaflops
Peak performance
Compute partitions:Cluster, Accelerator - GPU, Accelerator - FPGA, Large Memory
Central Processing Unit (CPU):AMD EPYC
Graphics Processing Unit (GPU):NVIDIA Ampere A100
Storage capacity:20 petabytes main storage with an all-flash scratch tier at 400GB/s, and a 5 petabytes tape library expandable to 100 petabytes
Applications:Traditional Computational, AI and Big Data/HPDA workloads
TOP500 ranking:#11 in EU; #45 globally (November 2021)
Green500 ranking:#2 in EU; #9 globally (November 2021)
Other details:Modular Supercomputer Architecture with a Cloud Module for complex use cases and persistent services, an aggregated 476TB RAM, Infiniband HDR interconnect in Dragonfly+ topology, high speed links to the GÉANT network and Public Internet


Picture of Karolina supercomputer

Karolina is a petascale EuroHPC supercomputer located in Ostrava, Czech Republic. It is supplied by Hewlett Packard Enterprise (HPE), based on an HPE Apollo 2000Gen10 Plus and HPE Apollo 6500 supercomputers. Karolina is hosted by IT4Innovations National Supercomputing Center.

9,59 petaflops
Sustained performance
12,91 petaflops
Peak performance
Compute partitions:

The supercomputer consists of 6 main parts:  

  • a universal part for standard numerical simulations, which will consist of approximately 720 computer servers with a theoretical peak performance of 3.8 PFlop/s,
  • an accelerated part with 70 servers and each of them being equipped with 8 GPU accelerators providing a performance of 11 PFlop/s for standard HPC simulations and up to 150 PFlop/s for artificial intelligence computations, 
  • a part designated for large dataset processing that will provide a shared memory of as high as 24 TB, and a performance of 74 TFlop/s,
  • 36 servers with a performance of 131 TFlop/s will be dedicated for providing cloud services,
  • a high-speed network to connect all parts as well as individual servers at a speed of up to 200 Gb/s,
  • data storages that will provide space for more than 1 PB of user data and will also include high-speed data storage with a speed of 1 TB/s for simulations as well as computations in the fields of advanced data analysis and artificial intelligence.
Central Processing Unit (CPU):More than 100,000 CPU cores and 250 TB of RAM
Graphics Processing Unit (GPU): More than 3.8 million CUDA cores / 240,000 tensor cores of NVIDIA A100 Tensor Core GPU accelerators with a total of 22.4 TB of superfast HBM2 memory
Storage capacity:More than 1 petabyte of user data with high-speed data storage with a speed of 1 TB/s
Applications: Traditional Computational , AI, Big Data
TOP500 ranking:#19 in EU; #71 globally (November 2021)
Green500 ranking:#8 in EU; #8 globally (November 2021)


Picture of Discoverer supercomputer
Sofia Tech Park

Discoverer is a petascale EuroHPC supercomputer located in Sofia, Bulgaria. It is supplied by Atos, based on the BullSequana XH2000 supercomputer and hosted by Sofia Tech Park.

4,51 petaflops
Sustained performance
5,94 petaflops
Peak performance
Compute partitions:One partition providing 1128 nodes, 4,44 petaflops
Central Processing Unit (CPU):AMD EPYC 7H12 64core, 2.6GHz, 280W (Code name Rome)
Graphics Processing Unit (GPU): No
Storage capacity:2 petabytes
Applications: Traditional Computational
TOP500 ranking:#30 in EU; #104 globally (November 2021)
Green500 ranking:#57 in EU; #226 globally (November 2021)
Other details:Topology - Dragonfly+ with 200Gbps (IB HDR) bandwidth per link



Deucalion is a petascale EuroHPC supercomputer currently built in Guimarães, Portugal. It is supplied by Fujitsu combining a Fujitsu PRIMEHPC (ARM partition) and Atos Bull Sequana (x86 partitions). Deucalion is hosted by MACC

7,22 petaflops
Sustained performance
10 petaflops
Peak performance
Compute partitions:ARM Partition: 1632 nodes, 3.8 PFLops ; x86 Partition: 500 nodes, 1,62 PFLops ; Accelerated: 33 nodes, 1,72 PFLops
Central Processing Unit (CPU):

A64FX (ARM partition), AMD EPYC (x86 partitions)

Graphics Processing Unit (GPU): NVidia Ampere
Storage capacity:

430 TB High-speed NVMe partition, 10.6 PB high-speed based Parallel File System partition.

Applications: Traditional Computational, AI, Big Data
Other details:

Deucalion will be installed at the Portuguese Foundation for Science and Technology (FCT) Minho Advanced Computing Centre (MACC), in close collaboration with the municipality of Guimarães, in the North of Portugal, as part of a fully sustainable computing infrastructure aiming at promoting new advancements in the digital and green transitions.