Sensitivity of computational fluid dynamics simulations against soft errors

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dc.authoridŞenol Pişkin / 0000-0002-8799-9472en_US
dc.authorscopusidŞenol Pişkin / 8636421200
dc.authorwosidŞenol Pişkin / JYJ-0063-2024
dc.contributor.authorYetkin, E. Fatih
dc.contributor.authorPişkin, Şenol
dc.date.accessioned2021-07-28T08:46:09Z
dc.date.available2021-07-28T08:46:09Z
dc.date.issued2021en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractComputational capabilities of the largest high performance computing systems have increased by more than 100 folds in the last 10 years and keep increasing substantially every year. This increase is made possible mostly by multi-core technology besides the increase in clock speed of CPUs. Nowadays, there are systems with more than 100 thousand cores installed and available for processing simultaneously. Computational simulation tools are always in need of more than available computational sources. This is the case for especially complex, large scale flow problems. For these large scale problems, the soft error tolerance of the simulation codes should also be encountered where it is not an issue in relatively small scale problems due to the low occurrence probabilities. In this study, we analyzed the reaction of an incompressible flow solver to randomly generated soft errors at several levels of computation. Soft errors are induced into the final global assembly matrix of the solver by manipulating predetermined bit-flip operations. Behaviour of the computational fluid dynamics (CFD) solver is observed after iterative matrix solver, flow convergence and CFD iterations. Results show that the iterative solvers of CFD matrices are highly sensitive to customized soft errors while the final solutions seem more intact to bit-flip operations. But, the solutions might still differ from the real physical results depending on the bit-flip location and iteration number. So, the next generation computing platforms and codes should be designed to be able to detect bit-flip operations and be designed bit-flip resistant.en_US
dc.identifier.citationYetkin, E. F., & Pişkin, Ş. (2021). Sensitivity of computational fluid dynamics simulations against soft errors. Computing, 1-23.en_US
dc.identifier.doi10.1007/s00607-021-00976-0en_US
dc.identifier.issn0010-485Xen_US
dc.identifier.issn1436-5057en_US
dc.identifier.scopus2-s2.0-85110550937en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/s00607-021-00976-0
dc.identifier.urihttps://hdl.handle.net/20.500.12713/1955
dc.identifier.wosWOS:000673091000001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorPişkin, Şenol
dc.language.isoenen_US
dc.publisherSPRINGER WIENen_US
dc.relation.ispartofCOMPUTINGen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHigh Performance Computingen_US
dc.subjectNavier-Stokes Equationsen_US
dc.subjectFault Toleranceen_US
dc.subjectSilent Data Corruptionen_US
dc.subjectBiCGen_US
dc.subjectExascale/Petascale Computingen_US
dc.subjectBit-Flip Erroren_US
dc.subjectSimulation Platformen_US
dc.titleSensitivity of computational fluid dynamics simulations against soft errorsen_US
dc.typeArticleen_US

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