Daniel Slotnick
Daniel Leonid Slotnick | |
|---|---|
| Born | Template:Birth date |
| Died | October 25, 1985 (aged 53) Baltimore, Maryland, U.S. |
| Occupation(s) | Mathematician, Computer Architect |
| Known for | Parallel processing, Chief architect of ILLIAC IV, Contributions to ARPANET |
Daniel Leonid Slotnick (born November 12, 1931 – died October 25, 1985) was a prominent American figure in both mathematics and computer architecture. In 1958, together with John Cocke, he introduced the groundbreaking idea of parallel processing for numerical computations. Slotnick held the position of chief architect for the ILLIAC IV supercomputer and led a significant DARPA research contract during the early 1970s that was instrumental in the creation of ILLIAC IV and also played a role in advancing the ARPANET. This initiative was based at a specialized center at the University of Illinois Urbana-Champaign, initially named the Center for Advanced Computation. The construction of ILLIAC IV was undertaken by Burroughs Corporation, which utilized custom-designed chips from Fairchild Semiconductor. Due to campus disruptions and legislative shifts such as the Mansfield amendments, ILLIAC IV was eventually relocated to the Ames Research Center, where Slotnick’s DARPA contract was discontinued. Following his passing, his personal collection of materials was donated to a supercomputing research institute established by the Institute for Defense Analyses and the National Security Agency in Washington, D.C. In recognition of his contributions, The Journal of Supercomputing published a commemorative tribute in 1987.
Slotnick passed away in Baltimore, Maryland on October 25, 1985, at the age of 53, reportedly due to a heart attack.
ARPANET
Although much of the development work on ARPANET took place at MIT Lincoln Laboratory and BBN Technologies, Slotnick’s DARPA-supported efforts were crucial during its planning stages. His contributions included defining a standard character encoding and creating the Purdy polynomial, a cryptographically secure hash function used for safeguarding passwords. Following ILLIAC IV’s transfer to the Ames Research Center, connectivity was restricted to telephone-based network access.
Awards
In recognition of his achievements, Slotnick was awarded the AFIPS Prize in 1962 and was honored as an IEEE Fellow in 1976.