View source for LUMI

{{short description|Supercomputer in Finland}}
{{Infobox custom computer
| Image           = File:The LUMI supercomputer.jpg
| Image_Size      =
| Alt             =
| Caption         =
| Dates           = June 13, 2022
| Sponsors        = [[European High-Performance Computing Joint Undertaking]], LUMI Consortium
| Operators       =
| Location        = [[Kajaani]], [[Finland]]
| Architecture    = 362,496 cores, AMD [[EPYC]] CPUs, 10,240 AMD [[Radeon Instinct]] MI250X GPUs (144,179,200 cores)<ref name="lumig"/><ref name="mi250docs">{{Cite web |url=https://www.amd.com/en/products/server-accelerators/instinct-mi250x |title=Archived copy |access-date=2024-07-15 |archive-date=2023-10-08 |archive-url=https://web.archive.org/web/20231008074826/https://www.amd.com/en/products/server-accelerators/instinct-mi250x |url-status=live }}</ref>
| Power           = 7.1 MW
| OS              =
| Space           = 150 m<sup>2</sup>
| Memory          = 1.75 petabytes
| Storage         = 117 petabytes
| Speed           = 379&nbsp;[[FLOPS|petaFLOPS]] (Rmax) / 531&nbsp;[[FLOPS|petaFLOPS]] (Rpeak)
| Cost            = €144.5 million
| ChartName       =
| ChartPosition   =
| ChartDate       =
| Purpose         =
| Legacy          =
| Emulators       =
| Website         = {{URL|https://www.lumi-supercomputer.eu|www.lumi-supercomputer.eu}}
| Sources         =
}}
'''LUMI''' ('''Large Unified Modern Infrastructure''') is a [[Petascale computing|petascale]] [[supercomputer]] located at the [[CSC – IT Center for Science|CSC]] data center<ref name="scbs">{{cite web |url=https://sciencebusiness.net/network-updates/csc-one-worlds-mightiest-supercomputers-lumi-will-lift-european-research-and |title=CSC: One of the world's mightiest supercomputers LUMI will lift European research and competitiveness to a new level |publisher=Science Business Publishing International SRL |date=October 21, 2020 |website=ScienceBusiness |access-date=February 14, 2021 |archive-date=July 15, 2024 |archive-url=https://web.archive.org/web/20240715090308/https://sciencebusiness.net/network-updates/csc-one-worlds-mightiest-supercomputers-lumi-will-lift-european-research-and |url-status=live }}</ref> in [[Kajaani]], [[Finland]]. In January 2023, the computer became the fastest supercomputer in Europe.<ref name="2022-06-13-phoronix" />
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 [[TOP500|most powerful computers in the world]].<ref>{{Cite web|last=Black|first=Doug|date=2020-05-01|title=LUMI: the EuroHPC pre-exascale system of the North|url=https://insidehpc.com/2020/05/lumi-the-eurohpc-pre-exascale-system-of-the-north/|access-date=2021-02-15|website=insideHPC|language=en-US|archive-date=2020-12-02|archive-url=https://web.archive.org/web/20201202003446/https://insidehpc.com/2020/05/lumi-the-eurohpc-pre-exascale-system-of-the-north/|url-status=live}}</ref> The November 2022 [[TOP500]] ranks LUMI at number five, with a measured performance of 309.1 PFLOPS.<ref>{{Cite web |title=November 2022 {{!}} TOP500 |url=https://www.top500.org/lists/top500/2022/11/ |access-date=2022-11-19 |website=www.top500.org |archive-date=2022-11-16 |archive-url=https://web.archive.org/web/20221116115309/https://top500.org/lists/top500/2022/11/ |url-status=live }}</ref>
== Architecture ==
The system is being supplied by [[Hewlett Packard Enterprise]] (HPE), providing an HPE [[Cray]] EX supercomputer with next generation 64-core [[Advanced Micro Devices|AMD]] [[EPYC]] CPUs and AMD [[Radeon Instinct]] GPUs.<ref name="hpe">{{cite web |url=https://www.hpe.com/us/en/newsroom/press-release/2020/10/hewlett-packard-enterprise-wins-160m-contract-to-power-one-of-the-worlds-fastest-supercomputers-based-in-finland-to-bolster-europes-research-in-science-and-unlock-economic-growth.html |title=Hewlett Packard Enterprise wins $160M+ contract to power one of the world's fastest supercomputers based in Finland to bolster Europe's research in science and unlock economic growth |publisher=Hewlett Packard Enterprise Development LP |date=October 21, 2020 |website=Hewlett Packard Enterprise |access-date=February 13, 2021 |archive-date=July 19, 2021 |archive-url=https://web.archive.org/web/20210719084527/https://www.hpe.com/us/en/newsroom/press-release/2020/10/hewlett-packard-enterprise-wins-160m-contract-to-power-one-of-the-worlds-fastest-supercomputers-based-in-finland-to-bolster-europes-research-in-science-and-unlock-economic-growth.html |url-status=live }}</ref><ref>{{Cite journal|last1=Elster|first1=Anne C.|title=The European Factor: From ARM to Atos|url=https://ieeexplore.ieee.org/document/9364770|access-date=2021-07-09|journal=Computing in Science & Engineering|publisher=IEEE|issue=1|volume=23|doi=10.1109/MCSE.2020.3044070|date=February 26, 2021|pages=102–105|bibcode=2021CSE....23a.102E|s2cid=230608538|language=en-US|archive-date=2024-07-15|archive-url=https://web.archive.org/web/20240715090227/https://ieeexplore.ieee.org/document/9364770|url-status=live}}</ref> LUMI is a [[Graphics processing unit|GPU]] based system, and the majority of its computing power comes from its GPU cores, an [[Computer architecture|architecture]] which was chosen primarily for its cost/performance advantage.<ref>{{Cite web|last=Maagaard Winther|first=Cecilie|date=December 6, 2019|title=Huge HPC project offers great opportunities but is not without challenges|url=https://vidensportal.deic.dk/en/news/2019-12-06/LUMI-huge-opportunities|archive-url=|archive-date=|access-date=February 15, 2021|website=deic.dk|publisher=Danish e-infrastructure Cooperation}}</ref> The system is equipped with 1.75 petabytes of [[Random-access memory|RAM]],<ref name="lumig">{{Cite web |url=https://docs.lumi-supercomputer.eu/hardware/compute/lumig/ |title=Archived copy |access-date=2024-07-15 |archive-date=2023-03-31 |archive-url=https://web.archive.org/web/20230331131120/https://docs.lumi-supercomputer.eu/hardware/compute/lumig/ |url-status=live }}</ref><ref name="lumic">{{Cite web |url=https://docs.lumi-supercomputer.eu/hardware/compute/lumic/ |title=Archived copy |access-date=2024-07-15 |archive-date=2023-03-31 |archive-url=https://web.archive.org/web/20230331114947/https://docs.lumi-supercomputer.eu/hardware/compute/lumic/ |url-status=live }}</ref><ref name="lumid">{{Cite web |url=https://docs.lumi-supercomputer.eu/hardware/compute/lumid/ |title=Archived copy |access-date=2024-07-15 |archive-date=2023-03-31 |archive-url=https://web.archive.org/web/20230331120640/https://docs.lumi-supercomputer.eu/hardware/compute/lumid/ |url-status=live }}</ref> and storage includes a 7-petabyte partition of flash storage, combined with 80-petabytes of traditional storage, both based on the [[Lustre (file system)|Lustre]] parallel [[file system]], as well as a 30-petabyte data management service based on [[Ceph (software)|Ceph]]. This gives the system a total of 117 petabytes of storage with an aggregated I/O [[Bandwidth (computing)|bandwidth]] of 2 terabytes per second.<ref name="wccft">{{cite web |url=https://wccftech.com/amd-next-gen-epyc-radeon-instinct-powered-lumi-supercomputer-announced-2021/ |title=AMD's Next Gen EPYC & Radeon Instinct Powered LUMI Supercomputer Announced For 2021, 550 Petaflops Peak Horsepower |publisher=NewAge ADS, LLC |date=October 22, 2020 |website=Wccftech.com |access-date=February 14, 2021 |archive-date=July 15, 2024 |archive-url=https://web.archive.org/web/20240715090308/https://wccftech.com/amd-next-gen-epyc-radeon-instinct-powered-lumi-supercomputer-announced-2021/ |url-status=live }}</ref>
== Funding ==
LUMI is co-funded by the [[European High-Performance Computing Joint Undertaking|EuroHPC]] Joint Undertaking and the LUMI Consortium, which is composed of the following countries: [[Finland]], [[Belgium]], [[Czech Republic]], [[Denmark]], [[Estonia]], [[Iceland]], [[Norway]], [[Netherlands|the Netherlands]], [[Poland]], [[Sweden]], and [[Switzerland]]. The total budget is €144.5 million.<ref name="ehcp">{{cite web |url=https://eurohpc-ju.europa.eu/news/lumi-new-eurohpc-world-class-supercomputer-finland |title=LUMI: a new EuroHPC world-class supercomputer in Finland |publisher=European Commission |date=October 21, 2020 |website=EuroHPC |access-date=February 14, 2021 |archive-date=June 10, 2021 |archive-url=https://web.archive.org/web/20210610152353/https://eurohpc-ju.europa.eu/news/lumi-new-eurohpc-world-class-supercomputer-finland |url-status=dead }}</ref> <ref>{{Cite web |title=LUMI consortium |url=https://lumi-supercomputer.eu/lumi-consortium/ |access-date=2024-08-21 |website=LUMI |language=en-US}}</ref>
== Energy ==
The computer uses 100% [[Hydroelectricity|hydroelectric]] energy, and the heat it generates will be captured and used to heat buildings in the area,<ref name="hpcw">{{cite web |url=https://www.hpcwire.com/off-the-wire/lumi-supercomputer-will-start-operations-next-year-promotes-green-transition/ |title=LUMI Supercomputer Will Start Operations Next Year, Promotes Green Transition |publisher=Tabor Communications |date=November 17, 2020 |website=HPCwire |access-date=February 13, 2021 |archive-date=December 1, 2020 |archive-url=https://web.archive.org/web/20201201032923/https://www.hpcwire.com/off-the-wire/lumi-supercomputer-will-start-operations-next-year-promotes-green-transition/ |url-status=live }}</ref><ref>{{Cite web|title=Be prepared for Euro-HPC resource LUMI {{!}} Karolinska Institutet|url=https://staff.ki.se/be-prepared-for-euro-hpc-resource-lumi|access-date=2021-07-09|website=staff.ki.se|language=en|archive-date=2021-07-09|archive-url=https://web.archive.org/web/20210709184144/https://staff.ki.se/be-prepared-for-euro-hpc-resource-lumi|url-status=live}}</ref> making LUMI one of the most environmentally efficient supercomputers in the world.<ref>{{Cite web|date=27 October 2020|title=LUMI supercomputer will now be built|url=https://www.vr.se/english/just-now/news/news-archive/2020-10-27-lumi-supercomputer-will-now-be-built.html|website=Swedish Research Council|access-date=2021-07-09|archive-date=2021-07-09|archive-url=https://web.archive.org/web/20210709185732/https://www.vr.se/english/just-now/news/news-archive/2020-10-27-lumi-supercomputer-will-now-be-built.html|url-status=live}}</ref> The former [[UPM (company)|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.<ref>{{cite speech|title=The pan-European supercomputer of the North|first=Pekka|last=Manninen|event=1st LUMI Roadshow|location=EuroCC National EuroHPC Competence Center Sweden|date=January 22, 2021|url=http://media.enccs.se/2021/01/LUMI-ENCCS.pdf|access-date=July 9, 2021|archive-date=July 9, 2021|archive-url=https://web.archive.org/web/20210709191011/http://media.enccs.se/2021/01/LUMI-ENCCS.pdf|url-status=live}}</ref>
== Operation ==
Half of LUMI's capacity belongs to the EuroHPC Joint Undertaking, 20% of which is reserved for industry and SME use.<ref>{{Cite web|last=Nordgren|first=Kaj|date=June 22, 2021|title=Finland grants access to startups to supercomputer resources|url=https://www.businessfinland.fi/en/whats-new/news/2021/finland-grants-access-to-local-startups-to-the-state-owned-supercomputer-center-csc|access-date=2021-07-13|website=Business Finland|language=en-US|archive-date=2021-07-13|archive-url=https://web.archive.org/web/20210713090452/https://www.businessfinland.fi/en/whats-new/news/2021/finland-grants-access-to-local-startups-to-the-state-owned-supercomputer-center-csc|url-status=live}}</ref> The other half is shared among the LUMI Consortium countries, according to each country’s financial contribution.<ref>{{Cite web|title=FAQ|url=https://www.lumi-supercomputer.eu/faq/|access-date=2021-07-13|website=LUMI|language=en-US|archive-date=2021-07-13|archive-url=https://web.archive.org/web/20210713085506/https://www.lumi-supercomputer.eu/faq/|url-status=live}}</ref>
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.<ref>{{Cite web|date=2021-06-01|title=LUMI pilot projects selected|url=https://www.lumi-supercomputer.eu/lumi-pilot-projects-selected/|access-date=2021-07-09|website=LUMI|language=en-US|archive-date=2021-07-12|archive-url=https://web.archive.org/web/20210712010829/https://www.lumi-supercomputer.eu/lumi-pilot-projects-selected/|url-status=live}}</ref>
== Naming ==
The word "lumi" means "snow" in [[Finnish language|Finnish]].<ref>{{cite book|last=Alanne|first=Severi|author-link=Severi Alanne|title=Suomalais-Englantilainen Sanakirja - Finnish-English Dictionary|url=https://archive.org/details/suomalaisenglan00alangoog/page/n354/mode/2up|year=1919|publisher=Tyomies Publishing Company|location=Superior, Wisconsin|page=343}}</ref>
== See also ==
* [[Leonardo (supercomputer)|Leonardo]], another EuroHPC supercomputer under construction in [[Bologna]], [[Italy]]
* [[European High-Performance Computing Joint Undertaking|EuroHPC]] (European High-Performance Computing Joint Undertaking).
== References ==
{{reflist|refs=
<ref name="2022-06-13-phoronix">{{cite news |last1=Larabel |first1=Michael |title=LUMI Inaugurated As Europe's Most Powerful Supercomputer - Powered By AMD CPUs/GPUs |url=https://www.phoronix.com/scan.php?page=news_item&px=LUMI-Supercomputer-Inaugurated |access-date=14 June 2022 |work=www.phoronix.com |date=13 June 2022 |language=en |archive-date=14 June 2022 |archive-url=https://web.archive.org/web/20220614045553/https://www.phoronix.com/scan.php?page=news_item&px=LUMI-Supercomputer-Inaugurated |url-status=live }}</ref>
}}
[[Category:Cray products]]
[[Category:Petascale computers]]
[[Category:Supercomputing in Europe]]
[[Category:Kajaani]]
[[Category:Information technology in Finland]]