Ultrascale Simulations of Non-smooth Granular Dynamics

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Autorinnen und Autoren: Preclik T, Rüde U
Verlagsort: arXiv
Jahr der Veröffentlichung: 2014
Sprache: Englisch


This article presents new algorithms for massively parallel granular dynamics simulations on distributed memory architectures using a domain partitioning approach. Collisions are modelled with hard contacts in order to hide their micro-dynamics and thus to extend the time and length scales that can be simulated. The multi-contact problem is solved using a nonlinear block Gauss-Seidel method that is conforming to the subdomain structure. The parallel algorithms employ a sophisticated protocol between processors that delegate algorithmic tasks such as contact treatment and position integration uniquely and robustly to the processors. Communication overhead is minimized through aggressive message aggregation, leading to excellent strong and weak scaling. The robustness and scalability is assessed on three clusters including two peta-scale supercomputers with up to 458 752 processor cores. The simulations can reach unprecedented resolution of up to ten billion (1010) non-spherical particles and contacts.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Preclik, Tobias
Lehrstuhl für Informatik 10 (Systemsimulation)
Rüde, Ulrich Prof. Dr.
Lehrstuhl für Informatik 10 (Systemsimulation)


Preclik, T., & Rüde, U. (2014). Ultrascale Simulations of Non-smooth Granular Dynamics. arXiv.

Preclik, Tobias, and Ulrich Rüde. Ultrascale Simulations of Non-smooth Granular Dynamics. arXiv, 2014.


Zuletzt aktualisiert 2018-08-08 um 02:55