CMU-CS-85-177 Computer Science Department School of Computer Science, Carnegie Mellon University
Fault Free Performance Validation of a Fault-Tolerant Multiprocessor: Baseline and Synthetic Workload Measurements CMU-CS-85-177 Edward W. Czeck, Daniel P. Siewiorek, Zary Segall November 1985 Today's aircraft use on board computers to perform isolated functions. Soon aircraft must utilize ultrareliable computer systems to provide flight critical functions. This project outlines a Validation Methodology for ultrareliable computer systems and applies the methodology to the Fault Tolerant Multiprocessor FTMP system at NASA Langley's AIRLAB. The validation experiments applied to FTMP measured the operating system and fault tolerant software overheads on FTMP. The real time operating systems consumed 63% of the system throughput whereas the fault tolerant software required only 5%. Although the validation methodology was applied strictly to FTMP the methodology proved effective by uncovering both system implementation dependencies and undesirable behavior in the FTMP system.
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