Cray-2 Range page

The Cray-2 series of computers were manufactured from 1985 till 1990. 

At the time, the Cray-2 had the largest static memory of any computer in the world. This made it well suited to scientific compute loads as well has very responsive to large interactive workloads. The Cray-2 range also introduced the Unix operating system to Cray customers. The design of this machine used total immersion cooling that dissipated the immense heat generated by the tightly packed circuits. About 30 of these machines were delivered to customer locations all over the world.

NetworkCS Powers Down (last) CRAY-2

A press release lifted from :

     On Thursday, February 11 1999, Network Computing Services, Inc. (NetworkCS) powered off its CRAY-2 system for the last time. 
     This particular system is actually NetworkCS' third CRAY-2. The first such system, a single-processor, 16 MWord 
prototype machine (Serial Number:Q2) was installed in 3Q85. SNQ2 eventually became the module check-out machine for 
Seymour Cray's CRAY-3 project in Colorado Springs, CO. The second system, a four-processor, 256 MWord system 
(Serial Number: 2003) was installed at the end of 1985. In 1989 this system was returned to Cray Research and 
was eventually installed at the Massachusetts Institute of Technology (MIT). 

     The present CRAY-2 system is a four-processor vector supercomputer (Serial Number: 2021), with a 4.1 nanosecond 
clock period, a 2 GByte/s I/O backplane, and is capable of 1.9 gigaflops at peak performance. It has 512 MWords of 
Common Memory accessible by all four processors, and 16 KWords of high-speed Local Memory dedicated to each 
processor. This large memory version of the CRAY-2 was the first of its kind and one of only three that were built. 

     The CRAY-2 was installed for service in December 1988. Its 10+ year life cycle makes it NetworkCS' 
longest-running production system. It also proved to have been one the most reliable high-performance computing systems ever. 

     This passing of an era brings mixed emotions. John Sell, President of NetworkCS remarked, "The CRAY-2 has 
been the most interesting and fun machine we have owned. We can emphatically say, perhaps with some sadness, 
'they don't build them like that anymore '". 
     This system was the last operational CRAY-2 in existence. 
Scroll to Top