Donald B. Gillies

For other people named Donald Gillies, see Donald A. Gillies.

For other people named similarly, see Donald Gillis (disambiguation).

Donald B. Gillies in 1974 (Courtesy UIUC Dept. of Computer Science).

Donald Bruce Gillies (October 15, 1928 – July 17, 1975) was a Canadian mathematician and computer scientist, known for his work in game theory, computer design, and minicomputer programming environments.

Education

Donald B. Gillies was born in Toronto, Canada and attended the University of Toronto Schools, a laboratory school originally affiliated with the University. Students at this Ontario school skipped a year ahead and so he finished his 13th-grade studies at the age of 18.

Gillies attended the University of Toronto (1946–1950), intending to major in Languages and started his first semester taking seven different language courses. In his second semester he quickly switched back to majoring in Mathematics which was his love while in high school. In the Putnam exam competition of 1950, Gillies placed in the top 10 in North America, following his University of Toronto classmates John P. Mayberry and Richard J. Semple who were top 5 Putnam Fellows. Toronto would likely have won the competition in 1950 had Gillies been on the faculty-designated team.^[1])

After one year of graduate school at the University of Illinois at Urbana-Champaign (1951), Gillies transferred to Princeton University at the urging of John P. Mayberry to study under John von Neumann. Gillies and Mayberry were arch-rivals and best friends, and after Mayberry beat Gillies in the Putnam exam, each competed to finish their PhD degree first. At Princeton Gillies met his future wife, Alice E. Dunkle. When their relationship fizzled, knowing of the rivalry, she flirted with Mayberry, who subsequently approached Gillies to ask if he was still dating her.^[2] This tactic, used only once, led to their eventual marriage.

During his time at Princeton his interest area was computer design first and mathematics second. He continued to work summers with U-Illinois researchers in the check-out of the ORDVAC Computer at Aberdeen Proving Ground in Maryland.

At one point during his graduate studies, Von Neumann found out that Gillies had been spending time working on an Assembler (something that had not yet been invented). Von Neumann became enraged and told Gillies to stop work immediately because computers would never be used to perform such menial tasks.

After only two years of study at Princeton, Gillies completed his PhD before Mayberry, at age 25, in 1953, which was published in "Contributions to the theory of games" — in which he characterized the core which is the set of stable solutions in a non-zero sum game.

Early career

Gillies then went to England for two years to work for the NRDC (National Research Development Corporation) and worked with an early Pegasus computer there. This was done at a time when the U.S. government was drafting young people of all kinds - including Canadians - into service in the Korean War. When Gillies returned to the USA in 1956 he received a 1-A draft status which persisted until he was age 36. Upon returning to the USA, Gillies married Alice E. Dunkle and began a job as a professor at the University of Illinois at Urbana-Champaign.^[3]

In early October 1957 just hours after launch of Sputnik I, the UIUC Astronomy Department rigged an ad-hoc interferometer to measure signals from the satellite. The launch — by the Russian Military — caused a widespread panic across the United States. Gillies and Dr Jim Snyder programmed the ILLIAC I computer to calculate the satellite orbit from this data in under two days. The subsequent report of the ephemeris (orbit) and later publication in the journal Nature^[4] helped to dispel some of the fear created by the Sputnik launch by the Soviet Union. It also lent credance to the (likely false) idea that the Sputnik launch was part of an organized effort to dominate space.^[5]

Gillies wrote 3 patents in the late 1950s. One of them laid out all the details of how to implement a base register for relocation in computers — before it had been done. He considered these patents as kind of a joke, and assigned the rights of the patents to IBM, without taking fees for this service. This kept the ideas from being patented by others which would have hindered progress in the computer industry.

Starting in 1958, Gillies designed the 3-stage pipeline control of the ILLIAC II supercomputer at the University of Illinois. The control circuitry consisted of advanced control, delayed control, and interplay. This work was in the public domain, and competed with the Stretch computer system design from IBM that is often credited with inventing pipelining. This work was presented in a 1962 Michigan conference on computer design, "On the design of a very high speed computer" by Gillies.

The Math Department at UIUC celebrated the new primes with a postal meter cancellation stamp — until Appel and Haken proved the 4-color theorem in 1976.

During check-out of the ILLIAC II computer, Gillies found 3 new Mersenne primes, and published them in a paper, "Three new Mersenne primes and a statistical theory." The checkout algorithm was designed to exercise every aspect of the ILLIAC II computer. Gillies also wanted to draw attention to this new computer design in the field of mathematics. His new Mersenne primes were reported in the Guinness Book of World Records, and the largest one was immortalized on all mail sent from the Postal Annex at the Math department of the University of Illinois.

Later career

In the late 1960s, Gillies became concerned that students were not getting direct access to computers any more. He lobbied UIUC to adopt the 1968 WATFOR one-pass FORTRAN compiler / runtime system from the University of Waterloo in Ontario. This was a fast-turnaround IDE for batch-based mainframe computers. At the time it was common practice to submit a job (card deck) and pick up the results the next day. The WATFOR compiler could compile, link, and run a short program in the compiler's memory space in a few seconds. This compiler allowed the university to offer underclass programming courses not only to computer scientists but also to business majors and to other non-specialists.

In 1969, Gillies received a preprint of Wirth's "Pascal User Manual and Report" and launched a project to build the first Pascal compiler written in North America. Ian Stocks was one of the graduate students who worked on this fast-turnaround 2-pass compiler, and the compiler (for the Digital Equipment PDP-11 minicomputer) was completed in the early 1970s. This work was part of the "PDP-11 Playpen" project which focused on getting graduate students direct access to low-cost computer hardware, such as the PDP-11/23, where the Pascal compiler ran.

Two years later at the urging of his graduate student, Greg Chesson, Gillies became in 1974 the first licensee for the UNIX operating system from Bell Labs. Chesson went on to be the third person to edit the Unix kernel and was the eighth hire at Silicon Graphics Inc..

In memoriam

Gillies died unexpectedly at age 46 on July 17, 1975, of a rare viral myocarditis. Digital Equipment Corporation and many of his friends, colleagues, and family contributed money for the Donald B. Gillies Memorial Lectureship In Computer Science, at the University of Illinois at Urbana Champaign. This annual lectureship continues until this day.

In 1994, the Nobel Memorial Prize in Economic Sciences was awarded to John Forbes Nash. In the Nash Seminar, Gillies (who was at Princeton at the same time as Nash) was mentioned as a pioneer in the field of game theory. Nash proved the existence of stable solutions for non-zero sum games; Gillies and Shapley extended this work by characterizing the core which is the set of stable solutions that cannot be improved by a coalition.

In 2006 the Donald B. Gillies Chair Professorship was established in the department of Computer Science at the University of Illinois. A generous donation from Lawrence (Larry) White, a former student, established this chair. The first professor to hold this chair is Lui Sha, a well-known authority on real-time and embedded systems.

Students

• Greg Chesson
• Ian Stocks
• Al Davis
• Many others, some in the UIUC Mathematics Department.

See also

• History of computing
• Largest known prime number

References

1. ^ L.E. Bush, William Lowell Putnam Mathematical Competition, American Math Montly Vol 57 No 7 (Aug-Sep 1950) pp 467-470
2. ^ Alice E. D. Gillies, personal communication
3. ^ Engagement Announcement (New York Times), Alice E. Dunkle is Betrothed to Donald Gillies, a Mathematician, December 10, 1955.
4. ^ I. R. King, G. C. McVittie, G. W. Swenson, Jr., and S. P. Wyatt, Jr., "Further observations of the first satellite," Nature, No. 4593, November 9, 1957, p. 943.
5. ^ Vladimir Isachenov (AP), Secrets of Sputnik Launch Revealed, October 1, 2007.

External links

• Donald B. Gillies at the Mathematics Genealogy Project.
• Donald B. Gillies Memorial Lecture (UIUC CS Dept.), Donald B. Gillies Memorial Lecture (UIUC Math Dept.)
• University of Illinois Computing Timeline
• Some History of the Department of Astronomy (UIUC Astronomy Dept.)
• At the dawn of the space age (UIUC Astronomy Dept.)
• Sputnik's Secret History Finally Revealed (AP via FOX News, October 1, 2007)
• Mersenne Primes History, Theorems and Lists
• Donald B. Gillies chair professorship at the University of Illinois at Urbana-Champaign
• Five Mathematics PhDs granted by Donald B. Gillies, 1965-1973
• Gillies, D.B. ; Meagher, R.E. ; Muller, D.E. ; McKay, R.W. ; Nash, J.P. ; Robertson, J.E. ; Taub, A.H., On the design of a very high-speed computer, University of Illinois Digital Computer Lab Report No. 80, October 01, 1957.
• Donald B. Gillies, Three New Mersenne Primes and a Statistical Theory, Mathematics of Comput., Vol. 18:85 (Jan. 1964), pp. 93-97.
• Ian Stocks and Jayant Krishnaswamy, On a transportable high level language for minicomputers, ACM SIGMINI/SIGPLAN Conference, March 1976
• On a transportable high level language for minicomputers

Persondata
Name	Gillies, Donald B.
Alternative names
Short description
Date of birth	October 15, 1928
Place of birth
Date of death	July 17, 1975
Place of death