Welcome to the Cray History site where the entire timeline of supercomputers that bore the Cray name are represented.

From Cray-1 to Cray-T3E and beyond, the complex history of these premier supercomputers is explored. Join in and contribute to the archive with recollections, photographs and information.

*** Moved to new hosting environment 29 Aug 2023 *** 

Explore the family tree of Cray systems with specifications, documents and pictures.
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Help us build out this historical archive with corrections, photos, documents and contributions.    Contact us here.

Know of any Cray systems ? Check and correct the Cray-1, Cray-2 and XMP customer and locations listings.

Go see a Historic Cray system on display at one of these locations.

Fifty years of Cray supercomputers was celebrated with a virtual tour hosted by TNMOC in UK on 6th April 2022. This virtual talk explored the physical and logical structure of a Cray-1, peaking ‘under the covers’ of these remarkable machines. The talk also illuminates how these machines evolved and samples some of what was achieved using Cray supercomputers in the UK.  Recording of talk is here.  Print of slides and other updates are posted here.

What was it like building early Cray systems ? 

Read this personal account by Sonja Gardener of her time assembling early Cray supercomputer systems.

Illustration 21: On-site XMP Module tester

What was it like servicing and repairing complex Cray systems ? 

Read this personal account by Charlie Clark of his time as field engineering manager at Cray .

Early in March 2023 had a couple of days at the Computer Museum of America in Atlanta. Took the opportunity to wander round and make some mini-videos of some of the Cray Supercomputer exhibits. See the collection here.

Thanks to Lonnie and David Laufer Creative director at CMoA for the titles and opportunity.

Research the Cray Channels magazine, the premier source for information about Cray Research systems, customers and applications.
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Cray Machine Families

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