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.

Explore the family tree of Cray systems with specifications and pictures.

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

Help us build out this historical archive with corrections, photos, documents and contributions.    Contact us here.

First mission check and correct the Cray-1 and Cray-2 customer and locations listings.

Fifty years of Cray supercomputers April 2022 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 sample 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 servicing and repairing complex Cray systems ? 

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

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