Multiprocessor Checking Using Watchdog Processors

CímMultiprocessor Checking Using Watchdog Processors
Közlemény típusaJournal Article
Kiadás éve1996
SzerzőkMajzik, I., Hohl, W., Pataricza, A., and Sieh, V.
FolyóiratCOMPUTER SYSTEMS SCIENCE AND ENGINEERING
Kötet11
Kiadás5
Pagination301 - 310
Kiadás dátuma1996
ISBN-szám0267-6192
Összefoglalás

A new control flow checking scheme is presented, based on assigned-signature checking using a watchdog processor. This scheme is suitable for a multitasking, multiprocessor environment. The hardware overhead is comparatively low because of three reasons: first, hierarchically structured, the scheme uses only a single watchdog processor to monitor processes on multiple processors. Second, as an assigned-signature scheme, it does not require monitoring the instruction bus of the processors. Third, the run-time and reference signatures are embedded into the checked program; thus, in the watchdog processor neither a reference database nor a time-consuming search and compare engine is required.