Abstract
Recently, complex moment-based eigensolvers have been actively developed in highly parallel environments to solve large and sparse eigenvalue problems. In this paper, we provide an error resilience strategy of a Rayleigh–Ritz type complex moment-based parallel eigensolver for solving generalized eigenvalue problems. Our strategy is based on an error bound of the eigensolver in the case that soft-errors like bit-flip occur. Using the error bound, we achieve an inherent error resilience of the eigensolver that does not require standard checkpointing and replication techniques in the most time-consuming part.
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Acknowledgements
The authors would like to thank the anonymous referees for their useful comments. This research was supported partly by University of Tsukuba Basic Research Support Program Type A, JST/CREST, JST/ACT-I (Grant No. JPMJPR16U6) and KAKENHI (Grant Nos. 25286097, 25870099, 17K12690). This research in part used computational resources of COMA provided by Interdisciplinary Computational Science Program in Center for Computational Sciences, University of Tsukuba.
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Imakura, A., Futamura, Y., Sakurai, T. (2017). An Error Resilience Strategy of a Complex Moment-Based Eigensolver. In: Sakurai, T., Zhang, SL., Imamura, T., Yamamoto, Y., Kuramashi, Y., Hoshi, T. (eds) Eigenvalue Problems: Algorithms, Software and Applications in Petascale Computing. EPASA 2015. Lecture Notes in Computational Science and Engineering, vol 117. Springer, Cham. https://doi.org/10.1007/978-3-319-62426-6_1
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DOI: https://doi.org/10.1007/978-3-319-62426-6_1
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