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Concept
ETA Systems
Résumé
ETA Systems was a supercomputer company spun off from Control Data Corporation (CDC) in the early 1980s in order to regain a footing in the supercomputer business. They successfully delivered the ETA-10, but lost money continually while doing so. CDC management eventually gave up and folded the company.
Seymour Cray left CDC in the early 1970s when they refused to continue funding of his CDC 8600 project. Instead they continued with the CDC STAR-100 while Cray went off to build the Cray-1. Cray's machine was much faster than the STAR, and soon CDC found itself pushed out of the supercomputing market.
William Norris was convinced the only way to regain a foothold would be to spin off a division that would be free from management prodding. In order to regain some of the small-team flexibility that seemed essential to progress in the field, ETA was created in 1983 with the mandate to build a 10 GFLOPS machine by 1986.
In April 1989 CDC decided to shut down the ETA operation and keep a bare-bones continuation effort alive at CDC. At shutdown, 7 liquid-cooled and 27 air-cooled machines had been sold. At this point ETA had the best price/performance ratio of any supercomputer on the market, and its initial software problems appeared to be finally sorted out. Nevertheless, shortly thereafter CDC exited the supercomputer market entirely, giving away remaining ETA machines free to high schools through the SuperQuest computer science competition.
ETA had only one product, the ETA-10. It was a derivative of the CDC Cyber 205 supercomputer, and deliberately kept compatibility with it. Like the Cyber 205, the ETA-10 did not use vector registers as in the Cray machines, but instead used pipelined memory operations to a high-bandwidth main memory. The basic layout was a shared-memory multiprocessor with up to 8 CPUs, each capable of 4 double-precision or 8 single-precision operations per clock cycle, and up to 18 I/O processors.
The main reason for the ETA-10's speed was the use of liquid nitrogen (LN2) cooling in some models to cool the CPUs.
Source officielle
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