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Einrichtungen >> Technische Fakultät (TF) >> Department Informatik (INF) >> Lehrstuhl für Informatik 10 (Systemsimulation) >>

Mantle convection is a vital component of the Earth system. The relentless deformation taking place in the mantle by viscous creep has a far greater impact on our planet than might be immediately evident. Immense forces are at work in mantle convection cells: Continuously reshaping Earth’s surface, the mantle provides the enormous driving forces necessary to support large-scale horizontal motion, in the form of plate tectonics and associated earthquake and mountain building activity. At the same time the mantle induces substantial vertical motion in the form of dynamically maintained topography through lateral pressure gradients beneath tectonic plates. This vertical motion is perhaps the most spectacular manifestation of mantle convection - and its most defining and enduring impact upon the entire Earth system.
Mantle convection modeling relies upon sophisticated computational modeling and is a classical grand challenge application requiring extremely large grids and many time steps to represent the system with spatial and temporal resolutions fine enough to allow for the use of earth-like physical parameters. The mantle is characterized by strongly variable (e.g., stress-, temperature-, and pressure-dependent) viscosities with local contrasts spanning several orders of magnitude and demanding adaptivity in order to capture localization phenomena.
TERRA-NEO is an ambitious project to construct a next- generation mantle-circulation model. The time has come to leap forward and to leverage the vast computing power that will become available with exascale computing to enable simulation-based breakthrough results in our understanding of the solid Earth.
Prof. Dr. Ulrich Rüde, Prof. Dr. Gerhard Wellein, Dr.-Ing. Björn Gmeiner, M.Sc.(hons), Dr.-Ing. Jan Eitzinger, Bunge, Hans-Peter, Mohr, Marcus, Weismüller, Jens, Wohlmuth, Barbara, Waluga, Christian, Dr.-Ing. Dominik Bartuschat, M.Sc.(hons); Dipl.-Ing. (FH)

convection, Multigrid, Finite Elements, Supercomputing

Beginn: 1.1.2012

Gmeiner, Björn ; Mohr, M. ; Rüde, Ulrich: Hierarchical Hybrid Grids for Mantle Convection: A First Study. In: TU München (Veranst.) : Proceedings of the 11th International Symposium on Parallel and Distributed Computing (11th International Symposium on Parallel and Distributed Computing München 25.--29.06.2012). 2012, S. 309-314. - ISBN 978-1-4673-2599-8
Weismüller, Jens ; Gmeiner, Björn ; Ghelichkhan, S. ; Huber, Markus ; John, Lukas ; Wohlmuth, Barbara ; Rüde, Ulrich ; Bunge, H.-P.: Fast asthenosphere motion in high-resolution global mantle flow models. In: Geophysical Research Letters 42 (2015), Nr. 18, S. 7429-7435
Gmeiner, Björn ; Rüde, Ulrich ; Stengel, Holger ; Waluga, Christian ; Wohlmuth, Barbara: Performance and Scalability of Hierarchical Hybrid Multigrid Solvers for Stokes Systems. In: SIAM Journal on Scientific Computing 37 (2015), Nr. 2, S. C143--C168
Gmeiner, Björn ; Rüde, Ulrich ; Stengel, Holger ; Waluga, C. ; Wohlmuth, Barbara: Towards Textbook Efficiency for Parallel Multigrid. In: Numerical Mathematics: Theory, Methods and Application 8 (2015), Nr. 1, S. 22-46
Weißmüller, Johannes ; Gmeiner, Björn ; Mohr, Marcus ; Waluga, C. ; Wohlmuth, Barbara ; Rüde, Ulrich ; Bunge, H.-P.: Mantle convection on modern supercomputers. In: EGU General Assembly (Hrsg.) : EGU General Assembly Conference Abstracts. Bd. 17. Harvard : EGU General Assembly, 2015, S. 1.
Kuckuk, Sebastian ; Gmeiner, Björn ; Köstler, Harald ; Rüde, Ulrich: A Generic Prototype to Benchmark Algorithms and Data Structures for Hierarchical Hybrid Grids. In: Bader, Michael ; Bode, Arndt ; Bungartz, Hans-Joachim ; Gerndt, Michael ; Joubert, Gerhard R. ; Peters, Frans (Hrsg.) : Parallel Computing: Accelerating Computational Science and Engineering (CSE) (ParCo 2013 Garching 10.-13.9.2013). 2014, S. 813-822.
Gmeiner, Björn ; Waluga, C. ; Wohlmuth, B:: Local mass-corrections for continuous pressure approximations of incompressible flow. In: SIAM J. Numer. Anal. 52 (2014), Nr. 6, S. 2931-2956
Gmeiner, Björn ; Köstler, Harald ; Stürmer, Markus ; Rüde, Ulrich: Parallel multigrid on hierarchical hybrid grids: a performance Study on current high performance computing clusters. In: Concurrency and Computation: Practice and Experience 26 (2014), Nr. 1, S. 217-240
Gmeiner, Björn ; Rüde, Ulrich ; Wasniewski, J.: Peta-Scale Hierarchical Hybrid Multigrid Using Hybrid Parallelization. In: Lirkov, I. ; Margenov, S. (Hrsg.) : Large-Scale Scientific Computing. Bd. 8353. Berlin, Heidelberg, New York : Springer, 2014, (Lecture Notes in Computer Science), S. 439-447. - ISBN 978-3-662-43879-4
Wohlmuth, B. ; Gmeiner, Björn ; Stengel, H. ; Rüde, Ulrich ; Waluga, C.: Dual and Hybrid Hierarchical Grids for Fast Geophysical Flow Simulations. In: Bank, R.E. ; Grasedyck, L. ; Hackbusch, W. ; Wittum, G. (Hrsg.) : MFO Report Nr. 24 (Schnelle Löser für Partielle Differentialgleichungen Oberwolfach 11.-16.5.2014). Bd. 24. Oberwolfach : EMS Publishing House, 2014, S. 1356-1359.
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