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IBM Journal of Research and Development  
Volume 28, Number 2, Page 184 (1984)
Coding and Error Control
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Fault-Tolerant Memory Simulator

by C. L. Chen, R. A. Rutledge
Memory systems in modern computers employ a variety of methods to achieve fault tolerance, such as single- or double-error correction, page deallocation, or the use of spare chips or cells. Such methods ensure that the failure rate of the system is considerably less than the sum of the failure rates of the components. However, these methods also complicate the task of evaluating system reliability. The memory reliability function is too intractable to handle analytically, and we must turn to Monte Carlo methods. This paper describes the Fault-Tolerant Memory Simulator (FTMS), an interactive APL program which uses Monte Carlo simulation to evaluate the reliability of fault-tolerant memory systems.
Related Subjects: Error control and recovery; Error detection and correction; Fault tolerance; Memory (computer) design and technology