The Jean-Claude Laprie Award

Jean-Claude Laprie
About the Jean-Claude Laprie Award

The Jean-Claude Laprie Award in Dependable Computing is awarded annually since 2012 by the IFIP Working Group 10.4 on Dependable Computing and Fault Tolerance in his honor. The award recognizes outstanding papers that have significantly influenced the theory and/or practice of Dependable Computing.

It takes the form of a memorial plaque presented to the author(s) at the Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN).

Eligibility and Selection Criteria

Any paper relating to dependable and secure computing, and published at least 10 years prior to the award year (e.g., 2011 or earlier for the 2021 award) is eligible for the award.
The award seeks to recognize papers that have had a significant impact in the intervening years in one or more of the three following categories:

  • Technical/scientific research impact
  • Industrial/commercial product impact
  • Broad impact on the dependable computing community

Winner of the 2021 Jean-Claude Laprie Award

For 2021, the Award Committee has unanimously decided to select the following paper:

Measurement and Modeling of Computer Reliability as Affected by System Activity

Iyer, Ravishankar K. and Rossetti, David J and Hsueh, Mei-Chen. ACM TOCS 1986.

The Award Citation:

“Measurement and modeling of computer reliability as affected by system activity" authored by R. K. Iyer, D. J. Rossetti, and M. C. Hsueh and published in ACM Transactions on Computer Systems in 1986 was one of the first papers to perform empirical studies of failures in real systems (IBM Mainframe and the Stanford Linear Accelerator Computing System). The paper showed that there exists a strong correlation between the nature of the workload and its intensity and the failure rate of the system. This was a seminal result in that it showed that one needs to understand the overall system’s composition and behavior, in order to make predictions of its overall reliability. It also established the primary role of empirical measurements of failures of real systems, rather than rely upon (simple) analytical or simulation models of failures, and hence established the scientific foundations of the field of empirical reliability measurement.

The paper has had a tremendous impact in shaping subsequent empirical studies, as well as those in analytical modelling of computer systems. The idea has been incorporated in classical dependability textbooks (e.g., Reliable Computer Systems: Design and Evaluation, Third Edition, By Daniel P. Siewiorek, Robert S. Swarz), dependability tools (e.g., SHARPE) and into many commercial systems for dependability measurement (e.g., by IBM). This paper has been considered as a landmark paper in the field of computer system reliability by the evaluation committee, which resulted in its unanimous selection for the award.”

DSN-2021 Jean-Claude Laprie Award Committee

Chair: Sonia Ben Mokhtar, LIRIS/CNRS, FR


  • Haining Wang, Virginia Tech, USA
  • Evgenia Smirni, College of William and Mary College, USA
  • Domenico Cotroneo, Univ. di Napoli Federico II, IT Italy
  • Marco Vieira, University of, Coimbra, Portugal
  • Elias P. Duarte, Federal University of Paraná, Brazil
  • Xavier Defago, Tokyo Institute of Technology, Japan

About Jean-Claude Laprie

Jean-Claude Laprie (1944-2010) was Directeur de Recherche at LAAS-CNRS. He devoted his entire career to research on the dependability of computing systems. His unique capability of abstraction and formalization, and his contributions to the formulation of the concepts and methodologies of dependability were influential in defining and unifying the field of dependable and secure computing, rapidly leading to national and international recognition. He received the IFIP Silver Core in 1992, the Silver Medal of French Scientific Research in 1993, and the Grand Prize in Informatics of the French Academy of Science in 2009. He was made Chevalier de l'Ordre National du Mérite in 2002.


Past Award Winners


Ateniese, G., Di Pietro, R., Mancini, L. V., Tsudik, G. Scalable and Efficient Provable Data Possession. In Proc. 4th Intl. Conf. on Security and Privacy in Communication Networks (SecureComm), Istanbul, Turkey (September 2008), Art. No.9, pp.1-10


Huang, Y., Kintala, C., Kolettis, N., & Fulton, N.D. "Software Rejuvenation: Analysis, Module and Applications". In Proceedings of the 25th International Symposium on Fault-Tolerant Computing (FTCS), pp 381-390.


Algirdas Avizienis and Liming Chen, "On the implementation of N-version programming for software fault tolerance during execution", in Proc. COMPSAC, 1977, 149-155.


Kuang-Hua Huang and Jacob A. Abraham, "Algorithm Based Fault Tolerance for Matrix Operations", in IEEE Transactions on Computers, Vol. C-33, No. 6, pp. 518-528, June 1984

Richard Schlichting and Fred Schneider "Fail-Stop Processors: An Approach to Designing Fault-Tolerant Computing Systems" in ACM Transactions on Computing Systems, 1(3), Aug. 1983, pp. 222-238.


W.C.Carter and P.R.Schneider, "Design of Dynamically Checked Computers", Proceedings of the IFIP Congress, Vol.2, pp.878 – 883 (1968).

A. Avizienis, J.C. Laprie, B. Randell and C. Landwehr, "Basic concepts and taxonomy of dependable and secure computing", IEEE Transactions on dependable and secure computing. Vol.1. No.1, pp.1 - 23 (2004).


A. L. Hopkins, Jr., T.B. Smith, III, and J.H. Lala, "FTMP—A highly reliable fault-tolerant multiprocess for aircraft", Proceedings of the IEEE, vol.66, no.10, pp.1221, 1239, Oct. 1978


B. Randell, "System Structure for Software Fault Tolerance", IEEE Transactions on Software Engineering, vol.SE-1, no.1, 1975, pp 220-232.

J.H. Wensley, L. Lamport, J. Goldberg, M.W. Green, K.N. Levitt, P.M. Melliar-Smith, R.E. Shostak, C.B. Weinstock, "SIFT: The Design and Analysis of a Fault-Tolerant Computer for Aircraft Control", Proceedings of the IEEE, vol.66, no.10, 1978, pp.1240-1255.

H. Kopetz, G. Bauer, "The Time-Triggered Architecture", Proceedings of the IEEE, vol.91, no.1, 2003, pp. 112-126.



L. Lamport, R. Shostak, and M. Pease, “The Byzantine Generals Problem (1982)

J. Gray, “Why Do Computers Stop and What Can Be Done About It? (1986)

W.G. Bouricius, W.C. Carter and P.R. Schneider, “Reliability Modeling Techniques for Self-Repairing Computer Systems (1969)


A. Avizienis, “Design of fault-tolerant computers (1967)

J. F. Meyer, “On evaluating the performability of degradable computing systems (1980)

D. A. Patterson, G. Gibson, and R. H. Katz, “A case for redundant arrays of inexpensive disks (RAID) (1988)