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James Larus

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James Larus
Born (1958-09-15) September 15, 1958 (age 65)
EducationHarvard University (AB)
UC Berkeley (MSc & PhD)
Known forSingularity (operating system)
Scientific career
Fieldscomputer science
InstitutionsMicrosoft, University of Wisconsin-Madison, EPFL

James R. Larus is an American computer scientist specializing in the fields of programming languages, compilers, and computer architecture.[1] He is currently at École Polytechnique Fédérale de Lausanne (EPFL) where he has served as the Dean of the School of Computer and Communication Sciences (IC) from 2014 until 2021.[2][3]

Before joining EPFL, Larus worked as a Principal Researcher at Microsoft Research (MSR), where he worked from 1998 until 2013.[4] He was at one point the Director of Research and Strategy for Microsoft's eXtreme Computing Group (XCG) where he helped develop the Orleans cloud computing project.[4][5] He was also one of the two co-leads on Microsoft's Singularity project.[6]

Prior to working for Microsoft, James was an associate professor at University of Wisconsin–Madison in the Computer Science department.[7][8]


Larus graduated magna cum laude from Harvard University in 1980 with a Bachelor of Arts in applied mathematics.[7] He got both a Master of Science and a PhD in computer Science from the University of California, Berkeley in 1982 and 1989 respectively.[7]

Publications and Notable Work[edit]

Larus is known for the creation of SPIM, a widely distributed MIPS simulator.[7][9][10]

He has written many papers[7] and has an h-index of 67.[11] One of his best known papers is his paper on efficient path profiling.[12]

He is also a co-author of the book Transactional Memory, published in 2007 by Morgan & Claypool.[4][13]

Larus also helped fund and lead the development of the Decentralized Privacy-Preserving Proximity Tracing (DP-3T) in effort to provide contact tracing as a way to slow the COVID-19 pandemic.[14][15]


Larus was a Harvard College Scholar, a National Science Foundation Young Investigator, and is an ACM Fellow. He has also won numerous awards for his papers over the years.[7]


  1. ^ "Renowned Computer Scientist at the Head of the IC School". Retrieved 14 September 2014.
  2. ^ "James Larus Biography". Retrieved 14 September 2014.
  3. ^ Petersen, Tanya (24 September 2021). "Welcome Rüdiger Urbanke as new IC School Dean!". Retrieved 28 June 2022.
  4. ^ a b c "Microsoft Research Profile". Microsoft Research. Retrieved 14 September 2014.
  5. ^ "Orleans". Microsoft Research. Retrieved 14 September 2014.
  6. ^ "Singularity". Microsoft Research. Retrieved 14 September 2014.
  7. ^ a b c d e f "James Larus CV" (PDF). Retrieved 14 September 2014.
  8. ^ "James Larus Wisconsin Page". Retrieved 15 September 2014.
  9. ^ "SPIM". Retrieved 14 September 2014.
  10. ^ James O. Hamblen; Tyson S. Hall; Michael D. Furman (31 October 2007). Rapid Prototyping of Digital Systems: SOPC Edition. Springer Science & Business Media. pp. 303–. ISBN 978-0-387-72670-0.
  11. ^ "James Larus' Publication List". Google Scholar. Retrieved 22 April 2020.
  12. ^ Ball, Thomas; Larus, James (1996). "Efficient Path Profiling". ACM. Micro 29: 46–57. ISBN 9780818676413.
  13. ^ Harris, Tim; Larus, James; Rajwar, Ravi (2010). "Transactional Memory". Synthesis Lectures on Computer Architecture. 5 (1) (2nd ed.): 1–263. doi:10.2200/S00272ED1V01Y201006CAC011. ISSN 1935-3235.
  14. ^ Zastrow, Mark (2020). "Coronavirus contact-tracing apps: can they slow the spread of COVID-19?". Nature. doi:10.1038/d41586-020-01514-2. PMID 32433633. S2CID 218765305. Retrieved 15 September 2020.
  15. ^ "DP3T - Decentralized Privacy-Preserving Proximity Tracing". Github. Retrieved 15 September 2020.