29:
274:, which performed at 2.507 petaflops. The TOP500 list is revised semiannually, and the rankings change frequently, indicating the speed at which computing power is increasing. In November 2011, Riken reported that K had become the first supercomputer to exceed 10 petaflops, achieving a LINPACK performance of 10.51 quadrillion computations per second with a computing efficiency ratio of 93.2%. K received top ranking in all four performance benchmarks at the 2011
1376:
398:. This is 29.8% more efficient than China's NUDT TH MPP (ranked #2 in 2011), and 225.8% more efficient than Oak Ridge's Jaguar-Cray XT5-HE (ranked #3 in 2011). However, K's power efficiency still fell far short of the 2097.2 GFlops/kWatt supercomputer record set by IBM's NNSA/SC Blue Gene/Q Prototype 2. For comparison, the average power consumption of a TOP 10 system in 2011 was 4.3 MW, and the average efficiency was 463.7 GFlop/kW.
141:
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rapid transit system renamed one of its stations from "Port Island Minami" to "K Computer Mae" (meaning "In front of K Computer") denoting its vicinity. In June 2021, after the decommissioning of K computer, the station was renamed as
217:, and in November 2011, K became the first computer to top 10 petaflops. It had originally been slated for completion in June 2012. In June 2012, K was superseded as the world's fastest supercomputer by the American
289:
supercomputer replaced K as the world's fastest supercomputer, with a LINPACK performance of 16.325 petaflops. Sequoia is 55% faster than K, using 123% more CPU processors, but is also 150% more energy efficient.
47:
334:
technology. Each cabinet contained 96 computing nodes, in addition to six I/O nodes. Each computing node contained a single processor and 16 GB of memory. The computer's
198:
architecture with over 80,000 compute nodes. It was used for a variety of applications, including climate research, disaster prevention and medical research. The K computer's
263:, making it the fastest supercomputer in the world at the time; it achieved this performance with a computing efficiency ratio of 93.0%. The previous record holder was the
1615:
28:
1181:
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supercomputer, in 2020, which took the top spot on the June 2020 TOP500 list, at that time nearly three times faster than second most powerful supercomputer.
409:, the K computer's performance equaled "one million linked desktop computers". The computer's annual running costs were estimated at US$ 10 million.
976:
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1098:
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394: – the equivalent of almost 10,000 suburban homes) on the June 2011 TOP500 list, it is relatively efficient, achieving 824.6
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On the TOP500 list, it became first in June 2011, falling down through time to lower positions, to eighteenth in
November 2018.
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function for moving files between global and local file systems. Fujitsu developed an optimized parallel file system based on
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1146:""K Computer Mae" on the Port Liner will change its station name in June 2021 - [WTM] Railway & Travel News"
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Yokokawa, Mitsuo; Shoji, Fumiyoshi; Uno, Atsuya; Kurokawa, Motoyoshi; Watanabe, Tadashi (1–3 August 2011).
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The K supercomputer was decommissioned on 30 August 2019. In Japan, the K computer was succeeded by the
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Special
Interview: Taking on the Challenge of a 10-Petaflop Computer, Riken News, No. 298, April 2006.
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Yuichiro Ajima; et al. (2009). "Tofu: A 6D Mesh/Torus
Interconnect for Exascale Computers".
382:, called the Fujitsu Exabyte File System (FEFS), which is scalable to several hundred petabytes.
195:
673:. IEEE/ACM International Symposium on Low Power Electronics and Design. IEEE. pp. 371–372.
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Riken
Advanced Institute for Computational Science (AICS) in Kobe, which housed the K computer
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SPARC64(TM) VIIIfx: Fujitsu's New
Generation Octo Core Processor for PETA Scale computing
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contained in 864 cabinets, for a total of 705,024 cores, manufactured by
Fujitsu with
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Fujitsu
Scientific & Technical Journal, July 2012 (Vol. 48, No. 3, The K computer
1037:
826:"Japan pulls plug on K, once the world's fastest supercomputer, after seven-year run"
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Although the K computer reported the highest total power consumption (9.89
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ranked K the world's fastest supercomputer, with a computation speed of over 8
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The K computer: Japanese next-generation supercomputer development project
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with parallel/distributed functions, and provided users with an automatic
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405:, professor of electrical engineering and computer science at the
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As of
November 2018, the K computer held third place for the
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Now integrated into other
Fujitsu divisions or business groupings
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On 18 June 2012, the TOP500 Project
Committee announced that the
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418:
331:
183:
1235:
878:""K computer" No. 1 in Four Benchmarks at HPC Challenge Awards"
780:"TOP500 - K computer, SPARC64 VIIIfx 2.0GHz, Tofu interconnect"
852:"Japan's Fugaku gains title as world's fastest supercomputer"
1231:
763:"IBM supercomputer overtakes Fujitsu as world's fastest"
748:. Fujitsu. 2 November 2011. Retrieved 10 November. 2011.
152: – named for the Japanese word/numeral "
646:"Supercomputer "K computer" Takes First Place in World"
304:, with 0.6027 HPCG PFLOPS in November 2018.
977:"Riken Advanced Institute for Computational Science"
952:. Proceedings of Hot Chips 21. IEEE Computer Society
922:""SPARC64™ VIIIfx": A Fast, Reliable, Low-power CPU"
494:
K computer, SPARC64 VIIIfs 2.0GHz, Tofu interconnect
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1099:"An Overview of Fujitsu's Lustre Based File System"
801:"HPCG - November 2018 | TOP500 Supercomputer Sites"
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1167:Riken Next-Generation Supercomputer R&D Center
1162:Riken Advanced Institute for Computational Science
354:The nodes were connected by Fujitsu's proprietary
180:Riken Advanced Institute for Computational Science
79:Riken Advanced Institute for Computational Science
725:
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1616:Corporate Headquarters Office Technology System
615:"Japanese supercomputer 'K' is world's fastest"
581:"Japanese 'K' Computer Is Ranked Most Powerful"
756:
754:
159:
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317:The K computer comprised 88,128 2.0 GHz
255:Project Committee announced that K had set a
8:
370:The system adopted a two-level local/global
21:
746:"K computer" Achieves Goal of 10 Petaflops"
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268:National University of Defense Technology
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701:"Operating System for the K computer"
507:"Operation System for the K computer"
7:
1861:
1294:Fujitsu Computer Products of America
1071:(11). IEEE Computer Society: 36–40.
730:June 2011 TOP500 Supercomputer Sites
413:K Computer Mae rapid transit station
1212:World's most powerful supercomputer
296:K computer held third place in the
259:record with a performance of 8.162
943:Takumi Maruyama (25 August 2009).
14:
761:Kottoor, Naveena (18 June 2012).
1860:
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1848:
1374:
505:Moroo, Jun; et al. (2012).
338:system was designed to minimize
194:. The K computer was based on a
52:
1357:International Computers Limited
1126:. Trends in Japan. January 2012
134:: 18th, as of November 2018
1:
1946:SPARC microprocessor products
1034:"Open MPI powers 8 petaflops"
547:"TOP500 List - November 2018"
401:According to TOP500 compiler
170:(10) – was a
92:processors, Tofu interconnect
1564:Supercomputers and servers:
1321:Fujitsu Technology Solutions
520:(3): 295–301. Archived from
428:Keisan Kagaku Center Station
16:Supercomputer in Kobe, Japan
1216:June 2011 – June 2012
1009:"Programming on K computer"
902:. HPCG Benchmark. June 2017
699:Moroo; et al. (2012).
679:10.1109/ISLPED.2011.5993668
1972:
1172:K computer: Fujitsu Global
1822:
1440:Fujitsu Siemens Computers
1372:
1218:
1209:
1199:
1194:
1124:"Japan's K Supercomputer"
880:. Riken. 17 November 2011
160:
26:
1897:34.653361°N 135.220472°E
1305:Fujitsu Consulting India
1290:Fujitsu Client Computing
900:"June 2017 HPCG Results"
1951:Supercomputing in Japan
1931:One-of-a-kind computers
1400:General Airconditioners
982:. Riken. Archived from
445:Supercomputing in Japan
407:University of Tennessee
39:June 2011 – August 2019
1926:Fujitsu supercomputers
145:
123:10.51 petaflops (Rmax)
1902:34.653361; 135.220472
1779:Fujitsu's Application
1501:Global Cloud Platform
1317:Fujitsu Semiconductor
251:On 20 June 2011, the
143:
1758:Shiodome City Center
1589:Business computers:
1352:HAL Computer Systems
1313:Fujitsu Laboratories
830:www.japantimes.co.jp
514:Fujitsu Sci. Tech. J
276:HPC Challenge Awards
1936:Petascale computers
1893: /
1148:. 17 November 2020.
1077:10.1109/MC.2009.370
527:on 28 December 2013
178:, installed at the
23:
1464:Products, services
1433:Former and defunct
1384:Joint ventures and
1340:Former and defunct
1299:Fujitsu Consulting
1286:Amdahl Corporation
586:The New York Times
196:distributed memory
146:
1876:
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1804:Fujitsu Frontiers
1799:Kawasaki Frontale
1718:
1717:
1458:
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1370:
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1331:Nifty Corporation
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1219:Succeeded by
1187:June 2017 Top 500
386:Power consumption
344:power consumption
313:Node architecture
300:test proposed by
202:was based on the
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1963:
1956:64-bit computers
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1832:Now wholly owned
1809:Fujitsu Red Wave
1774:Atlas Consortium
1690:SPARC Enterprise
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1200:Preceded by
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1040:. Archived from
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924:. Fujitsu Global
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832:. 16 August 2019
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423:Port Island Line
417:On 1 July 2011,
362:) interconnect.
200:operating system
188:Hyōgo Prefecture
174:manufactured by
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109:Operating system
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1326:Glovia Services
1303:
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1206:2.566 petaflops
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1044:on 28 June 2011
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553:. November 2018
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858:. 23 June 2020
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1737:Toshio Ikeda
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1532:Processors:
1272:subsidiaries
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1900: /
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1680:Pocket LOOX
1222:IBM Sequoia
956:24 February
928:24 February
884:17 November
810:16 November
785:15 November
557:16 November
372:file system
366:File system
287:IBM Sequoia
247:Performance
219:IBM Sequoia
168:quadrillion
1915:Categories
1700:TurboSPARC
1582:Primequest
1573:K computer
1551:SPARC64 X+
1511:Macroscope
684:30 January
479:References
329:45 nm
325:processors
319:eight-core
283:California
182:campus in
150:K computer
22:K computer
1675:Micro 16s
1450:Socionext
1421:Denso Ten
1104:. Fujitsu
1014:. Fujitsu
836:30 August
706:. Fujitsu
648:. Fujitsu
272:Tianhe-1A
261:petaflops
215:petaflops
65:Operators
1855:Category
1842:Spun off
1636:FM Towns
1598:Lifebook
1578:Primergy
1445:Spansion
1203:Tianhe-1
1195:Records
1065:Computer
862:13 April
450:Graph500
434:See also
396:GFlop/kW
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1867:Commons
1695:SPARC64
1609:Defunct
1593:Celsius
1474:Current
1405:TranSys
1393:Current
1279:Current
1263:Fujitsu
1108:24 June
1085:2049404
1048:24 June
1018:24 June
993:20 June
710:18 June
652:20 June
625:20 June
592:20 June
376:staging
350:Network
285:-based
265:Chinese
257:LINPACK
176:Fujitsu
128:Ranking
88:88,128
69:Fujitsu
1751:Places
1724:People
1710:VP2000
1631:FLEPia
1621:DC/OSx
1568:Fugaku
1526:VM2000
1516:OpenFT
1491:BS2000
1486:BCeSIS
1130:6 June
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531:23 May
380:Lustre
253:TOP500
241:Fugaku
234:Sierra
230:Summit
211:TOP500
132:TOP500
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1941:Riken
1767:Other
1685:SINIX
1665:FM-11
1626:Eagle
1536:A64FX
1521:SESAM
1424:(14%)
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1347:FANUC
1102:(PDF)
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510:(PDF)
456:Notes
192:Japan
120:Speed
114:Linux
100:12.6
97:Power
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1837:Sold
1670:iPAD
1660:FM-8
1655:FM-7
1546:FR-V
1506:HOAP
1496:Enon
1481:ALiS
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1110:2011
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864:2024
838:2019
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559:2018
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468:See
419:Kobe
360:Tofu
342:and
332:CMOS
232:and
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148:The
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