Horst D. Simon

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Horst D. Simon
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BornAugust 8, 1953
Stadtsteinach, Germany
Academic background
EducationPh.D. in Mathematics
Alma materUniversity of California, Berkeley
ThesisThe Lanczos Algorithm for the Solution of Symmetric Linear Systems. (1982)
Doctoral advisorBeresford Parlett
Academic work
DisciplineComputer scientist
Main interestsHigh Performance Computing, parallel computing, algorithms, partitioning

Horst D. Simon (born August 8, 1953) is a renowned computer scientist known for his contributions to high-performance computing (HPC) and computational science.[1][2]

Early life and education

Horst D. Simon was born on August 8, 1953, in Stadtsteinach, Germany. From 1963-1972, he attended a high school in Germany, Markgraf-Georg-Friedrich Gymnasium Kulmbach. He completed his undergraduate studies at Technical University of Berlin from 1973-1976. Horst D. Simon joined University of California, Berkeley in 1976 from where he studied Mastery in mathematics|Masters of Mathematics from 1976-1977 and graduated with PhD in Mathematics in 1982.[2][3]


Horst Simon is an internationally recognized expert in the development of parallel computational methods for the solution of scientific problems. His research interests include development of sparse matrix algorithms, algorithms for large-scale Eigenvalue algorithm|eigenvalue problems, and domain decomposition algorithms.[4]

Early in his career he has served as a senior manager for Silicon Graphics from 1994-1996.[5]

From 1989-1994, he has worked at NASA Ames Research Center in Moffett Field, CA while serving as head of Applied Research Department for Computer Sciences Corporation.[2] He has also worked at Boeing Computer Services from 1983-1989. Horst Simon has been an Assistant Professor of Applied Mathematics at the State University of New York from 1982-1983.

Lawrence Berkeley National Laboratory

Simon joined Lawrence Berkeley National Laboratory in 1996 as director of the newly formed NERSC Division.[6] In 2004, Simon was appointed Associate Laboratory Director (ALD) for Computing Sciences at Berkeley Lab. In 2007, Simon was appointed Adjunct Professor in the Department of Electrical Engineering and Computer Science (EECS) at UC Berkeley.

In 2010, Simon was appointed Deputy Laboratory Director and Chief Research Officer (CRO) of LBNL.[7][8] In collaboration with the senior laboratory scientific leadership, he develops, funds, and monitors the progress of the multidisciplinary laboratory research initiatives. In 2018 these include water-energy research, machine learning for science, microbiome research for environmental application, quantum information science, advanced microelectronics beyond Moore’s law, and biogenic materials and chemistry.

From 2012-2014 Simon had assumed the leadership role in the development of the “second campus” at LBNL, a project to create a new site for the expanding programs at LBNL in biosciences and the environment. From 2014 onnward, Simon focused his activities on developing the strategic thrust of “Energy Innovation” at Berkeley Lab. Since 2016 Simon is leading the Diversity and Inclusion in Science working group at LBNL, exploring new structures to recruit and retain a more diverse workforce.


Horst Simon was appointed in 2022 as the founding director of ADIA Lab.[9][10] The Abu Dhabi Investment Authority has established ADIA Lab as an independent organization dedicated to research. This includes research in Data Science, Artificial Intelligence, Machine Learning, and High-Performance and Quantum computing|Quantum Computing. The lab aims to apply these advancements to areas such as climate change and energy transition, Blockchain|blockchain technology, financial inclusion and investing, cybersecurity, health sciences, education, telecommunications, and space exploration.[11]

Selected publications


  • Simon, Horst D; Bailey, David H; Barszcz, Eric; Barton, John T (1991). "The NAS parallel benchmarks". The International Journal of Supercomputing Applications. Sage Publications. 5 (3): 63–73. doi:10.1177/10943420910050030.
  • Pothen, Alex; Simon, Horst D; Liou, Kang-Pu (1990). "Partitioning sparse matrices with eigenvectors of graphs". SIAM journal on matrix analysis and applications. Society for Industrial and Applied Mathematics. 11 (3): 430–452. doi:10.1137/0611030.
  • Ding, Chris; He, Xiaofeng; Simon, Horst D (2005). "On the equivalence of nonnegative matrix factorization and spectral clustering". Proceedings of the 2005 SIAM international conference on data mining. Society for Industrial and Applied Mathematics: 606–610. doi:10.1137/1.9781611972757.70.
  • Simon, Horst D (1991). "Partitioning of unstructured problems for parallel processing". Computing systems in engineering. Pergamon. 2 (2–3): 135–148. doi:10.1016/0956-0521(91)90014-V.
  • Barnard, Stephen T; Simon, Horst D (1994). "Fast multilevel implementation of recursive spectral bisection for partitioning unstructured problems". Concurrency: Practice and experience. John Wiley & Sons, Ltd. 6 (2): 101–117.
  • Ding, Chris HQ; He, Xiaofeng; Zha, Hongyuan; Gu, Ming; Simon, Horst D (2001). "A min-max cut algorithm for graph partitioning and data clustering". Proceedings 2001 IEEE international conference on data mining. IEEE: 107–114. doi:10.1109/ICDM.2001.989507.


Awards and nominations

  • 1998 — Gordon Bell Prize (jointly with group from Cray and Boeing) in recognition of his efforts in parallel processing research.[12]
  • 1995 — H. Julian Allen Award (jointly with the NAS Parallel Benchmarks Team) for notable scientific papers written by authors at NASA Ames Research Center, for the NAS Parallel Benchmarks.[13]
  • 2009 — Gordon Bell Prize (in collaboration with IBM researchers) for the second time for the development of innovative techniques that produce new levels of performance on a real application.[12][14][15]
  • 2012 — Gordon Bell Prize Finalist (jointly with group from Intel and LBNL) for development of best price performance application.
  • 2015 — Test of Time Award (ACM), for the long term impact (citations) of the paper “NAS Parallel Benchmarks” (jointly with the NAS Parallel Benchmarks team).[7]
  • 2016 — Society for Industrial and Applied Mathematics - Supercomputing Career Award.[16]


  1. "Horst D. Simon". Computing Sciences Research. Retrieved 2023-05-15.
  2. 2.0 2.1 2.2 Land, Kimberly W. (June 5, 2000). "Computer scientist will tell the future of computers". www.nasa.gov. Retrieved 2023-05-15.
  3. "Horst D. Simon (IEEE)". ieeexplore.ieee.org. Retrieved 2023-05-15.
  4. Leonardo Dagum, Horst D. Simon, David H. Bailey, Eric Barszcz (October 1994). "NAS Parallel Benchmark Results 10-94" (PDF). NAS Technical Report NAS-94-001.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. "Colloquium Lectures 2000 | NASA Langley Colloquium & Sigma Series Lectures". Retrieved 2023-05-15.
  6. "Lifeboat Foundation Bios: Dr. Horst D. Simon". lifeboat.com. Retrieved 2023-05-15.
  7. 7.0 7.1 "Horst Simon to Lead New Research Center for Data and Computational Sciences in Abu Dhabi". HPCwire. Retrieved 2023-05-15.
  8. staff (2023-01-30). "Nobel Prize Winner and Former DOE Secretary Prof. Steven Chu Joins ADIA Lab Advisory Board". High-Performance Computing News Analysis | insideHPC. Retrieved 2023-05-15.
  9. "Abu Dhabi-based ADIA Lab to open European headquarters in Spain". Arabian Business. May 22, 2023.
  10. "ADIA Lab to Establish European HQ in Spain". High-Performance Computing News Analysis | insideHPC. 2023-03-21. Retrieved 2023-05-15.
  11. "ADIA Lab commences operation to explores latest technologies". www.gulftoday.ae. Retrieved 2023-05-15.
  12. 12.0 12.1 "ACM Gordon Bell Prize Recognizes Top Accomplishments in Running Science Apps on HPC". SC16. 2016-08-25. Retrieved 2023-05-15.
  13. "H. Julian Allen Awards". history.arc.nasa.gov. Retrieved 2023-05-15.
  14. "Horst D Simon: ACM Gordon Bell Prize (2009)". awards.acm.org. Retrieved 2023-05-15.
  15. Markoff, John (2007-08-06). "I.B.M. Near Supercomputer Contract". The New York Times. ISSN 0362-4331. Retrieved 2023-05-15.
  16. "LBNL's Dr. Horst Simon Named Director of Abu Dhabi Investment Authroity Lab for Computational Sciences". High-Performance Computing News Analysis | insideHPC. 2022-10-18. Retrieved 2023-05-15.

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