The Cray-2 was a vector supercomputer, which was offered by the company Cray Research 1985. It was the advancement of the Cray-1 and with its appearance the world-wide fastest computers, until it was replaced from the Cray X-MP.

The computer consists of 1 to 4 vector processors. Each individual processor has an achievement of approximately 0.488 GFlops and is clocked with 244 MHz. With 4 processors thus the achievement on 1,951 GFlops adds up. These 4 processors are background processors, which are used for actual counting. The Cray 2 possesses Vordergrundprozessor.Die processors for I/O handling, synchronisation of the background processors and for implementing tasks of system consists of silicon. Seymour Cray tried to make processors of gallium arsenide. However these processors were not yet operational, when the Cray 2 was developed. It was problematic that the 4 background processors were clearly faster than data by main storage be supplied could. In order to limit this problem, each of the 4 processors has 128 KByte memory, which is connected with the respective processor through very fast Pipes. This memory is filled by the foreground processor with data from the main memory. The main memory amounts to up to 4 GByte.

See also

Cray, Cray-1, Cray-3, Cray-4

Related links

• http://www.netlib.org/benchmark/top500/reports/report94/Architec/node5.html
• http://ed-thelen.org/comp-hist/vs-cray-res.htm

Articles in category "Cray-2"

We found here 9 articles.

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• Cray 2
  The actual Cray 2 with 8 processors. In the background is the storage unit that held the chilled fluourinert before being pumped into the computer.


• Cray 2
  Cray 2. One foreground, four background; 244 MHz clock; 2 GB RAM; 64 or 128-way memory interleave; 16-K word (128 KB) cache; 8 16-word prefetch buffers ...


• Cray-2 - Wikipedia, the free encyclopedia
  The Cray-2 foreground. Behind the CPU is the Cray-2's fluorinert cooling ... However the chips simply weren't ready for production, and the Cray-2 had to ...


• Cray-2 - Wikipedia, the free encyclopedia
  The Cray-2 foreground. Behind the CPU is the Cray-2's fluorinert cooling ... However the chips simply weren't ready for production, and the Cray-2 had to ...


• Cray-2 supercomputer proves to be powerful tool, but is under-utilized
  MIT users have had access to a Cray-2 supercomputer facility since July, but not as many have utilized it as had been expected. ...


• The Cray Computer Corporation Cray-2
  The Cray-2 is the system that was developed by Seymour Cray and was the ... The Cray-2 contains a foreground processor which performs system tasks, ...