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Título:
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Asynchronous and exact forward recovery for detected errors in iterative solvers
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Autor/a:
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Jaulmes, Luc Etienne; Casas, Marc; Moreto Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo
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Otros autores:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d'Altes Prestacions |
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Abstract:
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Abstract:
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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. |
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Abstract:
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This manuscript is the journal extension of a previously published conference paper [25]. This work has been partially supported by the European Research Council under the European Union’s 7th FP, ERC Advanced Grant 321253, and by the Spanish Ministry of Science and Innovation under grant TIN2015-65316-P. L. Jaulmes has been partially supported by the Spanish Ministry of Education, Culture and Sports under grant FPU2013/06982. M. Moretó has been partially supported by the Spanish Ministry of Economy and Competitiveness under Juan de la Cierva
postdoctoral fellowship JCI-2012-15047. M. Casas has been partially supported by the Secretary for Universities and Research of the Ministry of Economy and Knowledge of the
Government of Catalonia and the Co-fund programme of the Marie Curie Actions of the European Union’s 7th FP (contract 2013 BP B 00243). We would like to thank Nicolas
Vidal for his contribution on using huge pages natively. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Informàtica
-High performance computing
-Error correction codes
-Hardware
-Redundancy
-Programming
-Program processors
-Registers
-Càlcul intensiu (Informàtica) |
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Derechos:
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Tipo de documento:
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Artículo - Versión presentada
Artículo |
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