Cray-History.net

Korean Meteorological Administration – Cray systems

KMA the Korean Meteorological Administration was a steady user of Cray systems.After replacing a NEC SX-5 in 2004 with a Cray X-1 the site hosted a Cray X-1E followed by a KE6 then an XC40 . In-depth reviews : 13339-operational-visualization-process-and-tools-nwp-model-output-kma 14423-status-hpc-infrastructure-and-nwp-operation-kma KMA Products Currently “The Korea Meteorological Administration (KMA) is building a large-scale weather

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100th Cray Supercomputer and 100th X-MP

Cray XMP / By Clive England

The 100th Machine ( which is a red XMP built in 85 ) about 55 Cray-1s were made. Celebration glasses with the inscription “Celebrating 100 of the worlds fastest Computers March 1985” were issued and an all employee party was held. The 100th Cray XMP was SN225 in March 1987 From Cray Chips

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University of Kiel – Cray X-MP Installation and maintenance photos

Some installation and maintenance photos on the first X-MP SN318 at University of Kiel. ** A big thanks to Juergen Kreuels for the photos and recollections.** Cray Chips Notes 25/11/1987 Shipment has been made to the University of Kiel, West Germany, of CRAY X-MP system Serial 318. This is our tenth customer and eleventh

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KFA / FZJ in Juelich – A German Supercomputer site

Cray XMP, Cray YMP Model D, Cray T3E / By Clive England

Situated in the west of Germany between Köln and Aachen close to the French & Dutch borders is KFA Juelich now known as Forschungszentrum Jülich a supercomputer centre that has hosted Cray systems and others. Introducing themselves with the words .. The Jülich Supercomputing Centre (JSC) at Forschungszentrum Jülich operates and develops supercomputers of the

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DKRZ – German supercomputer site

Uncategorised / By Clive England

Based in Hamberg, Germany DKRZ or Deutsches Klimarechenzentrum GmbH is high performance climate computing site with a long history of supercomputer deployments. An early user of CDC Cyber systems the site got its first Cray-2 system in November 1988. Following this a Cray-YMP4E followed in the early ’90s. By 1995 the site had moved on

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SN411 was at SINTEF in Trondheim

Uncategorised / By Clive England

From Cray Chips “TO THE LAND OF THE TROLLS” 1986/12/11 For various reasons the route a system takes to reach its destination may be as individual as the computer’s configuration. Hank Rosenbaum proved this on following Serial 411 to Norway. The path led by truck from Chippewa Falls to Minneapolis; by plane to Chicago and

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Dan’s Collection of Cray systems in Watford, UK

Cray YMP Model E, Cray T3D, Cray T90 / By Clive England

Update 21 May 2026 – The collection was seen (May 2026) for sale at an auction site in the UK. With Sales page here Listing Page captured here. Historic Cray Supercomputers Linked to GCHQ and Edinburgh University Head to Auction was Dan Goldsmith Dan Goldsmith has collected these Cray Research systems and kindly shared the

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There is beauty in chips

Books Articles etc / By Clive England

It’s not often that the worlds of fashion and glamour intersect with the hard industrial process of creating a supercomputer. We are used to seeing how supercomputers have changed the world of engineering and technology but discovering this story during research into the 250 issues of Cray Chips was an unexpected angle. From this issue

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Cray systems in Brazil

Cray XT / By Clive England

After hearing a rumour that a Cray-2 went to Brazil I had a dig into the Archives – then was reminded that co-conspirator Alistair had spent some time in Brazil and had some inside knowledge. Turns out no Cray-2 but a couple of later systems did service in Brazil. In Cray Chips from January

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The 12 Crays of Christmas 2025

Cray Machine Families, Books Articles etc / By Clive England

Decided to do a few posts in the “Cray Supercomputer Fans” Facebook group as the 12 Crays of Christmas – enjoy. In approx order Cray-1 XMP Cray-2 YMP-M90 C90 T3E XT3 / Red Storm CS6400 EL * / J90 / SV1 later CX1 CS LV & AC XT5h ( Black Widow) Cray-1, Serial Number 1

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CHM exhibit “Little Character” and SC write up

Uncategorised, Museums, Books Articles etc / By Clive England

Dag Spicer at the Computer History Museum writes .…. I also wanted to share with you a unique Cray artefact we have on permanent display in our Supercomputing gallery (with a Cray-1 (S/N 6), Cray-2, and Cray-3. It’s called, “lLttle Character” (1958) and the story I was told about it was that it was Seymour’s

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John Schmuhl Remembers The Cray 2 at US Army Tank Automotive R&D Center in Warren, Michigan, USA.

Cray-2, Support And Service / By Clive England

John Schmuhl reports on FB: I had the honor of managing the Cray-2 supercomputer site at the US Army Tank Automotive Research, Development and Engineering Center in Warren, Michigan. Ours was Serial Number SN2014. The Cray-2 4 cpu 256 GBytes DRAM was installed in the summer and fall of 1987, went online in January 1988,

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SC100 Seymour Cray at 100 years

Museums, Events / By Clive England

Sunday 28th September 2025 would have been Seymour Cray’ 100th Birthday. Various events were held in the UK and USA. A talk was presented in the UK at The Nation Museum of Computing and open houses were held at Chippewa Falls museum of Industry and Technology and Chippewa Area History Centre. Talk recording here The

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The Seymour Cray Era of Supercomputers: From Fast Machines to Fast Codes (Pub. ACM Books 2025 )

Books Articles etc / By Clive England

By: Boelie Elzen and Donald MacKenzie ISBN: 979-8-4007-1369-9 DOI: 10.1145/3705551. eBook: $36.00 | Paperback: $45.00 | Hardcover: $65.00 ACM Members receive a 25% discount on all books, and Student Members receive a 30% discount. For low-cost access to all ACM Books, Professional and Student Members may purchase an annual subscription. Notes Available on

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Computer Conservation Society Film show 2023

Cray-Film-Show, Events / By Clive England

This film show concentrated on material about supercomputers built by Cray Research. From the classic C shaped Cray-1, through generations of systems, we saw and heard about the technology, applications and people involved with the world’s most powerful computers. Featuring a recently re-discovered interview with founder Seymour Cray and animations from real life applications. This

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