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ILLIAC was the name given to a series of supercomputers built at the University of Illinois at Urbana-Champaign. A supercomputer is a Computer that is at the frontline of processing capacity particularly speed of calculation (at the time of its introduction This article is about the flagship campus For other uses and locations of University of Illinois, see University of Illinois (disambiguation The University of In all 5 computers were built in this series between 1951 and 1974. Design of the ILLIAC VI began in early 2005.

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ORDVAC

ORDVAC was the first of two computers built under contract at the University of Illinois. The ORDVAC or Or dnance D iscrete V ariable A utomatic C ORDVAC was delivered to US Army Aberdeen Proving Grounds in the spring of 1951 and checked out in the summer. As part of the contract, funds were provided to the University of Illinois to build a second identical computer known as ILLIAC I. (See IAS machine)

ILLIAC I

ILLIAC I was the first von Neumann architecture computer to be built and owned by an American university. The IAS machine was the first electronic digital Computer built by the Institute for Advanced Study (IAS, Princeton NJ, USA. The ILLIAC I ( Illi nois A utomatic C omputer) a pioneering Computer built in 1952 by the University of Illinois The von Neumann architecture is a design model for a stored-program Digital computer that uses a processing unit and a single separate storage structure It was put into service on September 22, 1952. Events 66 - Emperor Nero creates the Legion I Italica. 1236 - The Lithuanians Year 1952 ( MCMLII) was a Leap year starting on Tuesday (link will display full calendar of the Gregorian calendar. The computer was based upon plans published by von Neumann, Eckert, and Mauchly at Princeton, but the Princeton computer was completed exceedingly late. John Adam Presper "Pres" Eckert Jr ( April 9, 1919 – June 3, 1995) was an American electrical engineer and John William Mauchly ( August 30 1907 &ndash January 8 1980) was an American Physicist who along with J Using the von Neumann architecture from Institute for Advanced Study (IAS), it was built with 2,800 vacuum tubes and weighed about 5 tons. The von Neumann architecture is a design model for a stored-program Digital computer that uses a processing unit and a single separate storage structure The Institute for Advanced Study, located in Princeton New Jersey, United States is a center for theoretical research ILLIAC I had a 5k main memory and 64k Drum memory. By 1956 it had gained more computing power than all computers in Bell Labs combined. Bell Laboratories (also known as Bell Labs and formerly known as AT&T Bell Laboratories and Bell Telephone Laboratories) is the Research organization ILLIAC I was decommissioned in 1963 when ILLIAC II (see below) became operational. A programming manual can be found at [1]

(See IAS machine) (See also ENIAC)

ILLIAC II

The ILLIAC II was the first transistorized and pipelined super computer built by the University of Illinois. The IAS machine was the first electronic digital Computer built by the Institute for Advanced Study (IAS, Princeton NJ, USA. ENIAC, short for Electronic Numerical Integrator And Computer, was the first general-purpose electronic Computer. The ILLIAC II was a revolutionary super-computer built by the University of Illinois that became operational in 1962. At its inception in 1958 it was 100 times faster than competing machines of that day. It became operational in 1962, two years later than expected.

ILLIAC II had 8192 words of core memory, backed up by 65,536 words of storage on magnetic drums. The core memory access time was 1. 8 to 2 µs. The magnetic drum access time was 7 µs. A "fast buffer" was also provided for storage of short loops and intermediate results (similar in concept to what is now called cache). The "fast buffer" access time was 0. 25 µs.

The word size was 52 bits. Floating point numbers used a format with 7 bits of exponent (power of 4) and 45 bits the mantissa. The significand (also Coefficient or Mantissa) is the part of a floating-point number that contains its significant digits Instructions were either 26 bits or 13 bits long, allowing packing of up to 4 instructions per memory word.

In 1963 Donald B. Gillies used the ILLIAC II to find three Mersenne primes, with 2917, 2993, and 3376 digits - the largest primes known at the time. Donald Bruce Gillies ( October 15[[ 928]] – July 17[[ 975]] was a Canadian mathematician and computer scientist known for his work in Game theory In Mathematics, a Mersenne number is a positive integer that is one less than a Power of two: M_n=2^n-1

ILLIAC III

The ILLIAC III was a fine-grained SIMD pattern recognition computer built by the University of Illinois in 1966. The ILLIAC III was a fine-grained SIMD Pattern recognition computer built by the University of Illinois in 1966. In Computing, SIMD ( S ingle I nstruction M ultiple D ata is a technique employed to achieve data level parallelism as in a Vector

This ILLIAC's initial task was image processing of bubble chamber experiments used to detect nuclear particles. Later it was used on biological images. The machine was destroyed in a fire, caused by a Variac shorting on one of the wooden-top benches, in 1968.

ILLIAC IV

Main article: ILLIAC IV

The ILLIAC IV was one of the most infamous supercomputers ever, one of the first attempts at a massively parallel computer. ILLIAC IV was one of the most infamous Supercomputers ever in a series of research machines ILLIACs, from the University of Illinois. ILLIAC IV was one of the most infamous Supercomputers ever in a series of research machines ILLIACs, from the University of Illinois. A supercomputer is a Computer that is at the frontline of processing capacity particularly speed of calculation (at the time of its introduction Key to the ILLIAC IV design was fairly high parallelism with up to 256 processors, used to allow the machine to work on large data sets in what would later be known as vector processing. Parallel computing is a form of computation in which many instructions are carried out simultaneously operating on the principle that large problems can often A vector processor, or array processor, is a CPU design where the instruction set includes operations that can perform mathematical operations on multiple data The machine was finally ready for operation in 1976, after a decade of development that was now massively late, massively over budget, and outperformed by existing commercial machines like the Cray-1. The Cray-1 was a Supercomputer designed by a team including Seymour Cray for Cray Research.

CEDAR

CEDAR is a hierarchical shared-memory supercomputer completed in 1988. The development team was led by Professor David Kuck. David J Kuck was a professor in the Computer Science Department the University of Illinois at Urbana-Champaign from 1965 to 1993 This SMP (symmetric multiprocessing) system embodied advances in interconnection networks, control unit support of parallelism, optimizing compilers and parallel algorithms and applications. It is occasionally referred to as ILLIAC V.

ILLIAC VI

The ILLIAC VI is currently under construction at the University of Illinois Urbana-Champaign. It is a 65K node communications supercomputer utilizing commodity DSPs as the computation nodes. It will be a fixed point workhorse capable of over 1. 2 quadrillion multiply-accumulate operations per second and will have a bi-sectional bandwidth of over 4 terabytes per second.

Trusted ILLIAC

The Trusted ILLIAC was completed in 2006 at the University of Illinois Urbana-Champaign's Coordinated Science Laboratory and Information Trust Institute. This article is about the flagship campus For other uses and locations of University of Illinois, see University of Illinois (disambiguation The University of History The Information Trust Institute (ITI was founded in 2004 as an interdisciplinary unit designed to approach Information security research from a It is a 256 node Linux cluster, with each node having two processors and onboard FPGA's to enable smart compilers and programming models, system assessment and validation, configurable trust mechanisms, automated fault management, on-line adaptation, and numerous other configurable trust frameworks. The nodes each have access to 8 GB memory on a 6. 4 GB/s bus, and are connected via 8 GB/s PCI-Express to the FPGAs. A 2. 5 GB/s InfiniBand network provides the internode connectivity. The system itself was constructed using the help and support of AMD and HP.

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