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Active | June 13, 2022 |
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Sponsors | European High-Performance Computing Joint Undertaking, LUMI Consortium |
Location | Kajaani, Finland |
Architecture | 362,496 cores, AMD EPYC CPUs, 10,240 AMD Radeon Instinct MI250X GPUs (144,179,200 cores) [1] [2] |
Power | 8.5 MW |
Space | 150 m2 |
Memory | 1.75 petabytes |
Storage | 117 petabytes |
Speed | 550 petaFLOPS (peak) |
Cost | €144.5 million |
Website | www.lumi-supercomputer.eu |
LUMI (Large Unified Modern Infrastructure) is a petascale supercomputer located at the CSC data center [3] in Kajaani, Finland. As of January 2023 [update] , the computer is the fastest supercomputer in Europe. [4]
The completed system consists of 362,496 cores, capable of executing more than 375 petaflops, with a theoretical peak performance of more than 550 petaflops, which places it among the top five most powerful computers in the world. [5] The November 2022 TOP500 ranks LUMI at number five, with a measured performance of 309.1 PFLOPS. [6]
The system is being supplied by Hewlett Packard Enterprise (HPE), providing an HPE Cray EX supercomputer with next generation 64-core AMD EPYC CPUs and AMD Radeon Instinct GPUs. [7] [8] LUMI is a GPU based system, and the majority of its computing power comes from its GPU cores, an architecture which was chosen primarily for its cost/performance advantage. [9] The system is equipped with 1.75 petabytes of RAM, [1] [10] [11] and storage includes a 7-petabyte partition of flash storage, combined with 80-petabytes of traditional storage, both based on the Lustre parallel file system, as well as a 30-petabyte data management service based on Ceph. This gives the system a total of 117 petabytes of storage with an aggregated I/O bandwidth of 2 terabytes per second. [12]
LUMI is co-funded by the EuroHPC Joint Undertaking and the LUMI Consortium, which is composed of the following countries: Finland, Belgium, Czech Republic, Denmark, Estonia, Iceland, Norway, Poland, Sweden, and Switzerland. The total budget is €144.5 million. [13]
The computer uses 100% hydroelectric energy, and the heat it generates will be captured and used to heat buildings in the area, [14] [15] making LUMI one of the most environmentally efficient supercomputers in the world. [16] The former UPM paper mill where LUMI is located had only a single 2 minute power outage during its 38 years of operations thanks to the site's reliable connection to the national grid. [17]
Half of LUMI's capacity belongs to the EuroHPC Joint Undertaking, 20% of which is reserved for industry and SME use. [18] The other half is shared among the LUMI Consortium countries, according to each country’s financial contribution. [19]
By June 2021 pilot projects had been selected for the first run of the CPU partition, scheduled for September 2021, with full operations including the GPU partition planned for 2022. [20]
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