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Register file soft error recovery

United States Patent

October 15, 2013
View the Complete Patent at the US Patent & Trademark Office
Register file soft error recovery including a system that includes a first register file and a second register file that mirrors the first register file. The system also includes an arithmetic pipeline for receiving data read from the first register file, and error detection circuitry to detect whether the data read from the first register file includes corrupted data. The system further includes error recovery circuitry to insert an error recovery instruction into the arithmetic pipeline in response to detecting the corrupted data. The inserted error recovery instruction replaces the corrupted data in the first register file with a copy of the data from the second register file.
Fleischer; Bruce M. (Yorktown Heights, NY), Fox; Thomas W. (Rochester, NY), Wait; Charles D. (Rochester, CT), Muff; Adam J. (Rochester, NY), Watson, III; Alfred T. (Rochester, NY)
International Business Machines Corporation (Armonk, NY)
12/ 652,360
January 5, 2010
This invention was made with Government support under contract number B554331 awarded by The Department of Energy. The Government has certain rights to this invention.