Simultaneously multithreaded processing and single event failure detection method
AssigneeThe Aerospace Corporation
InventorEugene Grayver
Life of this patent
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Abstract
A multithreaded processor is programmed for executing multiple simultaneous working programs by respective processor worker threads each executing the identical code having identical results for achieving redundant operations that can be compared to each other by one or more checker threads for determining when one of the working programs or checker threads has failed for a single event fault detection and recovery of a failed worker or checker monitoring program so as to mitigate the effects of single event failure that may be due to radiation.
Claims10
A method implemented by a program executed by and within a programmed simultaneously multithreaded processor for detecting a single event failure, the method comprising the steps of,
- executing like worker programs by respective worker threads of the processor,
- storing respective results from the execution of the like worker programs,
- executing a monitoring program by a checker thread of the processor for comparing the stored respective results, and
- determining when a result of the results of a respective worker threads is different than remaining results of remaining worker threads for detecting that a respective worker thread has had a single event failure.
A method implemented by a program executed by and within a programmed simultaneously multithreaded processor for detecting a single event failure, the method comprising the steps of,
- executing like worker programs by respective worker threads of the processor,
- storing respective worker results from the execution of the like worker programs,
- executing like monitoring programs by checker threads of the processor for comparing the stored respective worker results, and
- determining when one of the worker results is different than remaining worker results of remaining worker threads for detecting when a respective worker thread has had a single event failure.
Dependencies are inferred from the claim text.