Dependable Computing and

Fault Tolerance

The IEEE Technical Committee on Dependable Computing and Fault Tolerance
IFIP Working Group 10.4 on Dependable Computing and Fault Tolerance

Dependable Computing and Fault Tolerance News

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2018 Laprie Award Winners

The IFIP 10.4 working group on Dependable Computing created the award in honor of the late Jean-Claude Laprie in 2011. It recognizes outstanding papers that have significantly influenced the theory and/or practice of Dependable Computing. For 2018, the award committee has selected:

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


Avizienis and Chen’s On the Implementation of N-version Programming for Software Fault Tolerance during Execution introduced one of the most fundamental approaches to software fault tolerance. Through a set of concepts and definitions as well as principles of implementation, and by applying those principles in a carefully conducted experiment, the paper comprehensively introduces and evaluates the opportunities and challenges of N-version programming. The concept of N-version diversity introduced in the paper has significantly enhanced the design of reliable systems in industrial practice, for example in the triple-triple redundant 777 flight computer. In addition, as evidenced by the increasing number of citations the paper receives annually, its impact on the academic community is felt to this day and is not diminishing. This exceptional paper has been foundational to four decades of academic research in system design diversity with application to a variety of dependability concerns, including security.