Detection of Silent Data Corruptions in Smoothed Particle Hydrodynamics Simulations

Cavelan, Aurélien and Cabezón, Rubén M. and Ciorba, Florina M.. (2019) Detection of Silent Data Corruptions in Smoothed Particle Hydrodynamics Simulations. In: CCGrid 2019: The 19th Annual IEEE/ACM International Symposium in Cluster, Cloud, and Grid Computing. pp. 31-40.

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Official URL: https://edoc.unibas.ch/75267/

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Silent data corruptions (SDCs) hinder the correctness of long-running scientific applications on large scale computing systems. Selective particle replication (SPR) is proposed herein as the first particle-based replication method for detecting SDCs in Smoothed particle hydrodynamics (SPH) simulations. SPH is a mesh-free Lagrangian method commonly used to perform hydrodynamical simulations in astrophysics and computational fluid dynamics. SPH performs interpolation of physical properties over neighboring discretization points (called SPH particles) that dynamically adapt their distribution to the mass density field of the fluid. When a fault (e.g., a bit-flip) strikes the computation or the data associated with a particle, the resulting error is silently propagated to all nearest neighbors through such interpolation steps. SPR replicates the computation and data of a few carefully selected SPH particles. SDCs are detected when the data of a particle differs, due to corruption, from its replicated counterpart. SPR is able to detect many DRAM SDCs as they propagate by ensuring that all particles have at least one neighbor that is replicated. The detection capabilities of SPR were assessed through a set of error-injection and detection experiments and the overhead of SPR was evaluated via a set of strong-scaling experiments conducted on a HPC system. The results show that SPR achieves detection rates of 91-99.9%, no false-positives, at an overhead of 1-10%.
Faculties and Departments:05 Faculty of Science > Departement Mathematik und Informatik
05 Faculty of Science > Departement Mathematik und Informatik > Informatik > High Performance Computing (Ciorba)
UniBasel Contributors:Cavelan, Aurélien and Cabezon, Ruben M. and Ciorba, Florina M.
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Note:Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:21 May 2022 09:43
Deposited On:10 Mar 2020 10:10

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