Asynchronous and exact forward recovery for detected errors in iterative solvers
Rights accessOpen Access
European Commission's projectROMOL - Riding on Moore's Law (EC-FP7-321253)
Current trends and projections show that faults in computer systems become increasingly common. Such errors may be detected, and possibly corrected transparently, e.g. by Error Correcting Codes (ECC). For a program to be fault-tolerant, it needs to also handle the Errors that are Detected and Uncorrected (DUE), such as an ECC encountering too many bit flips in a codeword. While correcting an error has an overhead in itself, it can also affect the progress of a program. The most generic technique, rolling back the program state to a previously taken checkpoint, sets back any progress done since then. Alternately, application specific techniques exist, such as restarting an iterative program with its latest iteration's values as initial guess.
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
CitationJaulmes, L., Casas, M., Moreto, M., Ayguadé, E., Labarta, J., Valero, M. Asynchronous and exact forward recovery for detected errors in iterative solvers. "IEEE transactions on parallel and distributed systems", 19 Març 2018, vol. 29, núm. 9, p. 1961-1974
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder