John Gustafson (scientist) explained

John Leroy Gustafson
Birth Date:19 January 1955
Birth Place:United States
Thesis Title:Asymptotic Expansions of Elliptic Integrals
Thesis Year:1982
Doctoral Advisor:Bille C. Carlson

John Leroy Gustafson (born January 19, 1955) is an American computer scientist and businessman, chiefly known for his work in high-performance computing (HPC) such as the invention of Gustafson's law, introducing the first commercial computer cluster, measuring with QUIPS, leading the reconstruction of the Atanasoff–Berry computer, inventing the unum number format and computation system,[1] and several awards for computer speedup. Currently he is the Chief Technology Officer at Ceranovo, Inc.[2] He was the Chief Graphics Product Architect and Senior Fellow at AMD from September 2012 until June 2013,[3] [4] and he previously held the positions of Architect of Intel Labs-SC,[5] CEO of Massively Parallel Technologies, Inc.[6] and CTO at ClearSpeed Technology.[7] Gustafson holds applied mathematics degrees from the California Institute of Technology and Iowa State University.

Childhood and education

Gustafson was raised in Des Moines, Iowa. After completing a degree in Applied Mathematics at California Institute of Technology in 1977 he moved to Ames, Iowa and completed his M.S. (1981) and Ph.D. (1982) at Iowa State University.

His mother was an electronics technician at Collins Radio and his father was a chemical engineer turned MD, both as a result of World War II. His parents encouraged his scientific explorations at a young age. Assembling radio transmitters, designing and executing chemistry experiments, and making holograms are some of his favorite childhood explorations.[8]

Unums

See main article: unum (number format). Gustafson has devised a new format for storing real numbers in computers use a variable number of bits depending on the number of digits required, called unum number format.[9] Normal formats store numbers as a fixed number of bits, for example 64 bits is usual for double-precision floating-point format numbers. This can allow them to be smaller than doubles for fast processing and also more precise or larger than the limits for double when desirable.[10]

Awards and honors

In 1988, Gustafson was the recipient of the inaugural Gordon Bell Prize. He has received other awards for his work in HPC, including the International Atanasoff Award (2006). He was awarded the IEEE Computer Society Golden Core Award in 2007.

Other awards and honors include:

External links

Notes and References

  1. Book: Gustafson . John L. . John Gustafson (scientist) . The End of Error: Unum Computing . . 2nd corrected printing, 1st . 2016-02-04 . 2015-02-05 . 978-1-4822-3986-7 . . 24 . 2016-05-30. https://books.google.com/books?id=fZsXBgAAQBAJ http://www.crcpress.com/product/isbn/9781482239867
  2. Web site: John Gustafson Moves to Ceranovo as CTO . Lewey . Anton . 2014-01-20 . insideHPC . 2015-06-27.
  3. Web site: AMD Hires John Gustafson as Chief Graphics Product Architect . 2012-08-28 . .
  4. Web site: Now at AMD John Gustafson Wants to Light a Fire Under GPU Computing . Michael . Feldman . 2012-09-13 . HPCwire . 2016-07-11 . live . https://web.archive.org/web/20160711212702/https://www.hpcwire.com/2012/09/13/now_at_amd_john_gustafson_wants_to_light_a_fire_under_gpu_computing/ . 2016-07-11.
  5. Web site: AMD Hires Ex-Intel Labs Architect, John Gustafson, As Chief Graphics Product Architecture . Anand Lal . Shimpi . Anand Lal Shimpi . 2012-08-28 . . 2016-07-11 . live . https://web.archive.org/web/20160711211916/http://www.anandtech.com/show/6202/amd-hires-exintel-labs-architect-john-gustafson-as-chief-graphics-product-architecture . 2016-07-11.
  6. Web site: Massively Parallel Names HPC Industry Leader John Gustafson CEO . Abbie . Kendall . 2008-05-15 . . 2016-07-11.
  7. Web site: Dr. John Gustafson Accepts Position with ClearSpeed Technology; HPC Industry Pioneer Joins the Company as CTO, HPC . Paul . Owen . 2005-09-06 . . 2016-07-11.
  8. Web site: Movers and Shakers in HPC: John Gustafson . Caroline . Connor . 2010-10-20 . HPCwire . 2012-07-22 . https://web.archive.org/web/20120722232951/http://www.hpcwire.com/hpcwire/2010-10-20/movers_and_shakers_in_hpc_john_gustafson.html . 2012-07-22.
  9. Web site: Slidecast: John Gustafson Explains Energy Efficient Unum Computing . 2015-03-02 . Rich . Brueckner . Inside HPC . The Rich Report . 2016-06-10 . live . https://web.archive.org/web/20160710220847/http://insidehpc.com/2015/03/slidecast-john-gustafson-explains-energy-efficient-unum-computing/ . 2016-07-10.
  10. Web site: Unum Computing: An Energy Efficient and Massively Parallel Approach to Valid Numerics . March 2015 . 2016-07-11.

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