Illiac IV


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Illiac IV

(computer)
One of the most infamous supercomputers ever. It used early ideas on SIMD (single instruction stream, multiple data streams). The project started in 1965, it used 64 processors and a 13MHz clock. In 1976 it ran its first sucessfull application. It had 1MB memory (64x16KB).

Its actual performance was 15 MFLOPS, it was estimated in initial predictions to be 1000 MFLOPS. It totally failed as a computer, only a quarter of the fully planned machine was ever built, costs escalated from the $8 million estimated in 1966 to $31 million by 1972, and the computer took three more years of enginering before it was operational.

The only good it did was to push research forward a bit, leading way for machines such as the Thinking Machines CM-1 and CM-2.
References in periodicals archive ?
Much of the advanced work in computing being conducted at Illinois revolved around the design and implementation of the ILLIAC IV computer system (Barnes et al.
The decision to move ILLIAC IV was made partly as a consequence of campus unrest related to military support of the project (by ARPA) at a time when there was also considerable opposition, including violent protests, to the Vietnam War.
in Computer Science at Illinois in 1971) worked on the design of the operating system for the ILLIAC IV (Alsberg and Mills 1969).
This was a reciprocation visit; the previous fall Slotnick and his entourage had visited the University of Pennsylvania (Penn) to talk with Ian McHarg about environmental analysis and computing, a side trip from visiting Burroughs Corporation in Pennsylvania (where ILLIAC IV was being constructed using an Illinois design).
The strategy adopted was similar to that adopted by the designers of the ILLIAC IV operating system (CAC 1972, p.
The ARPANET also loosely ties the ILLIAC IV and IRIS projects together.
This unrest ultimately led to the movement of ILLIAC IV to California, which, in turn, made it necessary to use a network to access this valuable computing resource, a practice that would be adopted by other projects, including IRIS.
Appendix A Daniel Slotnick, ILLIAC IV, and Geographic Information Analysis
The new facility will house 1,800 students, educators and researchers and accommodate the current expansion of UIUC's Computer Science Department, which is renowned for the contributions its students and alumni have made in advancing technology, from providing the inspiration for "HAL" in 2001: A Space Odyssey via the ILLIAC IV, to the invention of groundbreaking computing applications such as the first Internet graphics browser.
He later became an Assistant Professor at the University of Illinois where he participated in the ILLIAC IV computer project.