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Issue No.04 - July/August (1988 vol.8)
pp: 18-29
<p>The development of an operating system that is a central component of a fault-tolerant multiprocessor is described. The operating system, while relatively simple and small, supports multitasking and multiprocessing, as well as both self-diagnostics and cross-diagnostics for fault detection. In the event of a fault, the system permits rapid reconfiguration in a manner that retains processing for the highest-priority tasks. Since the hardware needed to provide fault tolerance is available when there are no faults, the operating system can utilize this excess capacity to accomplish lower-priority tasks during normal operation. This approach yields graceful degradation in response to faults in the system components.</p>
Ronald D. Williams, Barry W. Johnson, Thomas E. Roberts, "An Operating System for a Fault-Tolerant Multiprocessor Controller", IEEE Micro, vol.8, no. 4, pp. 18-29, July/August 1988, doi:10.1109/40.7769
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