Cray EL

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 will explored the physical and logical structure of Cray-1  SN34, peaking ‘under the covers’ of this remarkable machine. The talk also illuminates how these machines evolved and sample some of what was …

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EL and C90 Poster Centerfolds

These two posters appeared side by side in Cray Channels V13_N4 as centre folds. Also distributed as wall posters. These two machines, at the opposite ends of the Cray performance spectrum, nevertheless less ran the same UNICOS operating systems and compiler environments. The EL often appeared at larger Cray sites acting as a software development …

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High Performance Computing Workshop “Performance Programming on the Cray YMP-EL” 

High Performance Computing Workshop Performance Programming on the Cray YMP-EL by Dr. Andrew J. Pounds High Performance Computing Group Georgia Institutute of Technology. Click link for .pdf High performance programmining on the Cray EL Vector_OCR  A great introduction into how to make your programs run fast on a Cray EL.  

Cray YMP-EL boot up sequence and annotated configuration files

  Cray EL boot sequence for sn5411 This document shows the boot sequence, as seen from the system console of a 2 IOS, 8 CPU Cray EL followed by the IOS and system configuration files. The later of which is passed to Unicos during the boot. User input in bold. HK68/V30 ver 01.04 -Power Up …

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Apple Computer and Cray Research – some notes

What are the Cray Research connections with Apple Computers ?   Cray XMP/48 with Apple SE inside (c)1987 John Greenleigh   Cray Research and Apple Computers, seemly at opposite ends of the computer price spectrum, do have some subtle historical links. It is well known that Seymour Cray used an Apple desktop when designing Cray Computer Corp machines. …

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