Work on TerraNeo continues as it forms an integral part of our new project
CoMPS: Multi-physics simulations for Geodynamics on heterogeneous Exascale Systems. The latter is one
of
15
projects funded by the German Federal Ministry of Education and Research (BMBF)
via its SCALEXA (New Methods and Technologies for Exascale Computing) initiative.
Funded by the European Union - NextGenerationEU. The views and
opinions expressed are solely those of the author(s) and do not
necessarily reflect the views of the European Union or the
European Commission. Neither the European Union nor the European
Commission can be held responsible for them.
The TerraNeo project is powered by the HyTeG (Hybrid Tetrahedral Grids) framework
for
extreme-scale high performance finite element simulations. It is tailored towards matrix-free geometric
multigrid solvers.
HyTeG is built upon the concept of hierarchical hybrid grids (HHG) to enable the solution
of extreme-scale linear systems with up to multiple trillion (1012) unknowns.
The article Textbook Efficiency: Massively
Parallel Matrix-Free Multigrid for the Stokes System studies the efficiency of HyTeG's geometric
multigrid solver applied to extreme-scale saddle point problems.
New preprint published on arXiv: Böhm F., Bauer D., Kohl N., Alappat C., Thönnes D., Mohr M., Köstler H. and Rüde U.,
Code Generation and Performance Engineering for Matrix-Free Finite Element Methods on Hybrid Tetrahedral Grids,
10.48550/arXiv.2404.08371.
Status and Coding Workshop in Raithenhaslach, Feb 6 - Feb 9.
Mantle convection is a central component of the Earth system. The slow but ceaseless deformation of
rocks through viscous creep taking place in the mantle has a far greater impact on our planet than might
immediately be evident.
Immense forces are at work deep below our feet and continuously reshape Earth’s surface. It is convective
motion in the mantle that generates the enormous driving forces leading to large scale horizontal motion,
in the form of plate tectonics and associated earthquake and mountain building activity. At
the same time mantle convection also induces substantial vertical motion in the form of dynamically
maintained topography through 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 modelling relies upon sophisticated computational modelling and is a classical
grand challenge application requiring extremely large grids and many time steps. These are necessary
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 localized phenomena.
TerraNeo is an ambitious project to construct a next generation mantle circulation model. The
time has come to leap forward and leverage the vast computing power that is becoming available
with exascale computing to enable simulation based breakthrough results in our understanding of
the solid Earth.
Publications
2024
Ponsuganth I., D'Ascoli E., Kohl N. and Mohr M., Numerical Studies on Coupled Stokes-Transport
Systems for Mantle Convection, Lecture Notes in Computer Science, vol. 14834, pp. 288-302, Springer
Nature Switzerland, eds.: Franco L., de Mulatier C., Paszynski M., Krzhizhanovskaya V., Dongarra J. and
Sloot P., 10.1007/978-3-031-63759-9_33
Böhm F., Bauer D., Kohl N., Alappat C., Thönnes D., Mohr M., Köstler H. and Rüde U.,
Code Generation and Performance Engineering for Matrix-Free Finite Element Methods on Hybrid Tetrahedral Grids,
10.48550/arXiv.2404.08371
2023
Thönnes D., Rüde U., Model-Based Performance Analysis of the HyTeG Finite Element Framework,
Proceedings of the Platform for Advanced Scientific Computing Conference (PASC '23).
Association for Computing Machinery, New York, NY, USA, Article 23, 1–12. 10.1145/3592979.3593422
Kohl N., Bauer D., Böhm F., Rüde U., Fundamental Data Structures for Matrix-Free Finite Elements on Hybrid Tetrahedral Grids, International Journal of Parallel, Emergent and Distributed Systems, 1--24, (2023). 10.1080/17445760.2023.2266875
2022
Kohl N., Mohr M., Eibl S., Rüde U., A Massively Parallel Eulerian-Lagrangian Method for Advection-Dominated
Transport in Viscous Fluids, SIAM Journal on Scientific Computing, 44, C260-C285, (2022). 10.1137/21M1402510
Kohl N., Rüde U., Textbook Efficiency: Massively Parallel Matrix-Free Multigrid for the Stokes System,
SIAM Journal on Scientific Computing, 44, C124-C155, (2022). 10.1137/20M1376005
2020
Horbach A., Mohr M., Bunge H., A Semi-Analytic Accuracy Benchmark for Stokes Flow in 3-D Spherical Mantle
Convection Codes, GEM - International Journal of Geomathematics, 11, (2020). 10.1007/s13137-019-0137-3
Drzisga D., Rüde U., Wohlmuth B., Stencil Scaling for Vector-Valued PDEs on Hybrid Grids With Applications
to Generalized Newtonian Fluids, SIAM J. Sci. Comp., 42, B1429-B1461, (2020). 10.1137/19M1267891
Bauer S., Bunge H., Drzisga D., Ghelichkhan S., Huber M., Kohl N., Mohr M., Rüde U., Thönnes D., Wohlmuth B.,
TerraNeo - Mantle Convection Beyond a Trillion Degrees of Freedom, (2020). 10.1007/978-3-030-47956-5_19
2019
Bauer S., Huber M., Ghelichkhan S., Mohr M., Rüde U., Wohlmuth B., Large-scale Simulation of Mantle
Convection Based on a New Matrix-Free Approach, Journal of Computational Science, 31, 60-76, (2019). 10.1016/j.jocs.2018.12.006
Kohl N., Thönnes D., Drzisga D., Bartuschat D., Rüde U., The HyTeG Finite-Element Software Framework for
Scalable Multigrid Solvers, International Journal of Parallel, Emergent and Distributed Systems, 1--20,
(2018). 10.1080/17445760.2018.1506453
Drzisga D., John L., Rüde U., Wohlmuth B., Zulehner W., On the Analysis of Block Smoothers for Saddle Point
Problems, SIAM Journal on Matrix Analysis and Applications, 39, 932--960, (2018). 10.1137/16M1106304
Huber M., Rüde U., Wohlmuth B., Adaptive control in roll-forward recovery for extreme scale multigrid,
Int. J. High Perf. Comp. Appl., 1--21, (2018). 10.1177/1094342018817088
Bauer S., Drzisga D., Mohr M., Rüde U., Waluga C., Wohlmuth B., A stencil scaling approach for accelerating
matrix-free finite element implementations, SIAM Journal on Scientific Computing, 40, C748-C778, (2018).
10.1137/17M1148384
Huber M., Rüde U., Waluga C., Wohlmuth B., Surface Couplings for Subdomain-Wise Isoviscous Gradient Based
Stokes Finite Element Discretizations, J. Sci. Comput., 74, 895–919, (2018). 10.1007/s10915-017-0470-3
Kohl N., Hötzer J., Schornbaum F., Bauer M., Godenschwager C., Köstler H., Nestler B., Rüde U., A scalable
and extensible checkpointing scheme for massively parallel simulations, Int. J. High Perf. Comp. Appl.,
33, (2018). 10.1177/1094342018767736
Rüde U., Willcox K., McInnes L., Sterck H., Research and Education in Computational Science and
Engineering, (2018). 10.1137/16M1096840
Drzisga D., Gmeiner B., Rüde U., Scheichl R., Wohlmuth B., Scheduling massively parallel multigrid for
multilevel Monte Carlo methods, SIAM J. Sci. Comp., 39, S873--S897, (2017). 10.1137/16M1083591
John L., Pustejovska P., Wohlmuth B., Rüde U., Energy-corrected finite element methods for the Stokes
system, IMA J. Num. Ana., 37, 687--729, (2017). 10.1137/16M1106304
Bauer S., Mohr M., Rüde U., Weismüller J., Wittmann M., Wohlmuth B., A two-scale approach for efficient
on-the-fly operator assembly in massively parallel high performance multigrid codes, Applied Numerical
Mathematics, 122, 14-38, (2017). 10.1016/j.apnum.2017.07.006
Bolten M., Franchetti F., Kelly P., Lengauer C., Mohr M., Algebraic description and automatic generation of
multigrid methods in SPIRAL, Concurrency and Computation: Practice and Experience, 29, (2017). 10.1002/cpe.4105
2016
Gmeiner B., Huber M., John L., Rüde U., Wohlmuth B., A quantitative performance study for Stokes solvers at
the extreme scale, J. Comp. Sci., 17, 509--521, (2016). 10.1016/j.jocs.2016.06.006
Huber M., Gmeiner B., Rüde U., Wohlmuth B., Resilience for Massively Parallel Multigrid Solvers, SIAM
J. Sci. Comp., 38, S217--S239, (2016). 10.1137/15M1026122
Rüde U., Gmeiner B., Bartuschat D., Wohlmuth B., Waluga C., Huber M., John L., Bunge H., Weismüller J.,
Baumann S., Mohr M., TerraNeo -- Integrated Co-Design of an Exascale Earth Mantle Modeling Framework,
inSiDE, 14, 78--81, (2016).
Waluga C., Wohlmuth B., Rüde U., Mass-corrections for the conservative coupling of flow and transport on
collocated meshes, J. Comp. Phys., 305, 319--332, (2016). 10.1016/j.jcp.2015.10.044
Bauer S., Bunge H., Drzisga D., Gmeiner B., Huber M., John L., Mohr M., Rüde U., Stengel H., Waluga C.,
Weismüller J., Wellein G., Wittmann M., Wohlmuth B., Hybrid Parallel Multigrid Methods for Geodynamical
Simulations, (2016). 10.1007/978-3-319-40528-5_10
2015
Gmeiner B., Rüde U., Stengel H., Waluga C., Wohlmuth B., Performance and scalability of hierarchical hybrid
multigrid solvers for Stokes systems, SIAM J. Sci. Comp., 37, C143--C168, (2015). 10.1137/130941353
Gmeiner B., Rüde U., Stengel H., Waluga C., Wohlmuth B., Towards textbook efficiency for parallel
multigrid, Numerical Mathematics: Theory, Methods and Applications, 8, 22--46, (2015). 10.4208/nmtma.2015.w10si
Weismüller J., Gmeiner B., Ghelichkhan S., Huber M., John L., Wohlmuth B., Rüde U., Bunge H., Fast
asthenosphere motion in high-resolution global mantle flow models, Geophys. Res. Lett., 42, 7429-7435,
(2015). 10.1002/2015GL063727
2014
Gmeiner B., Waluga C., Wohlmuth B., Local mass-corrections for continuous pressure approximations of
incompressible flow, SIAM J. Numer. Ana., 52, 2931--2956, (2014). 10.1137/140959675
2013
Bunge H., Paleo-structure of the Earth's Mantle, SIAM News, 46, (2013).
Gmeiner B., Design and analysis of hierarchical hybrid multigrid methods for peta-scale systems and
beyond, University of Erlangen-Nuremberg, (2013).
Theses
2020
Drzisga D., Accelerating Isogeometric Analysis and Matrix-free Finite Element Methods Using the Surrogate
Matrix Methodology, (2020). PhD thesis.
2019
Bauer S., New approaches for efficient on-the-fly FE operator assembly in a high-performance mantle
convection framework, (2019). 10.5282/edoc.23741PhD
thesis.
2018
Huber M., Massively parallel and fault-tolerant multigrid solvers on peta-scale systems, (2018). PhD
thesis.
2016
Weismüller J., Development and application of high performance software for mantle convection modeling,
(2016). 10.5282/edoc.19152PhD thesis.
2013
Gmeiner B., Design and analysis of hierarchical hybrid multigrid methods for peta-scale systems and
beyond, University of Erlangen-Nuremberg, (2013). PhD thesis.
Talks and presentations
2023
E. D'Ascoli, H. Brown, N. Kohl, M. Mohr and H.-P. Bunge, TerraNeo: Ongoing development of a
scalable mantle convection code for exascale computing, poster presentation at the EGU General
Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-4326,
10.5194/egusphere-egu23-4326
N. Kohl, S. F. McCormick, R. Tamstorf, Multigrid Methods Using Block Floating Point Arithmetic, Student Competition Winner,
21st Copper Mountain Conference On Multigrid Methods 2023, Copper Mountain, CO, USA, 16–20 Apr 2023,
Copper Mountain Multigrid 2023
2022
N. Kohl, Performance of massively parallel multigrid
on hybrid tetrahedral grids, 2022,
ISC High Performance, Hamburg, Germany
N. Kohl, Massively parallel solvers for buoyancy-driven convection in Stokes flow
, 2022,
SIAM Conference on Parallel Processing for Scientific Computing, Seattle/Virtual, USA
2019
U. Rüde, Parallel algorithms for solving finite element systems with ten trillion unknowns, 2019,
Modeling 2019, Olomouc, Czech Republic
U. Rüde, Extreme Scale Resilient Multigrid Solvers, 2019,
Challenges in High Performance Computing, Canberra, Australia
M. Mohr, S. Bauer, D. Drzisga, S. Ghelichkhan, M. Huber, B. Keith,
U. Rüde, B. Wohlmuth, Surrogate polynomials in matrix-free approaches for low-order FEM The
Mathematics of Finite Elements and Applications (MAFELAP 2019), Brunel University London, 18 - 21 June 2019
N. Kohl, U. Rüde, Designing Finite Element Multigrid Solvers for Extreme-Scale Earth Mantle Convection
Simulations, ISC High Performance 2019, Frankfurt, 16 - 20 June 2019
U. Rüde, Matrix-Free Multigrid on Hierarchical Hybrid Grids, 2019,
19th Copper Mountain Conference on Multigrid Methods, Copper Mountain, USA
U. Rüde, What is the largest finite element system that we can solve today?, 2019, Rencontres
Mathématiques de Rouen 2019, Rouen, France
U. Rüde, Parallel multigrid for systems with a trillion unknowns and beyond, 2019, The 28th
biennial Numerical Analysis Conference 2019, University of Strathclyde, Glasgow
U. Rüde, TerraNeo - Towards an Efficient and Sustainable Extreme Scale Earth Mantle Convection
Framework, 2019, SPPEXA Annual Plenary Meeting 2019
2018
U. Rüde, Extreme Performance for Computational Science, Second French-Japanese-German Workshop on
Programming and Computing for Exascale and Beyond, October, 2018
U. Rüde, Performance Engineering for Computational Science, HPC-Status-Konferenz der Gauß-Allianz,
October, 2018
U. Rüde, Extreme Performance for Computational Science, 2018, Second French-Japanese-German
Workshop
on Programming and Computing for Exascale and Beyond
U. Rüde, TerraNeo: Towards a Sustainable Exascale Framework for Earth Mantle Convection, 2018,
CoSaS 2018: International Symposium on Computational Science at Scale, Erlangen, Germany
U. Rüde, Fast scalable solvers for robust discretizations in CFD, 2018, ECCM-ECFD 2018:
Minisymposium: Exascale algorithms and software techniques for computational fluid and solid mechanics (S.
Turek, A. Klawonn, and U.Ruede), 11 - 15 June 2018, Glasgow, UK
2017
U. Rüde, Simulation mit Supercomputern: Die Grenzen der Vorhersagbarkeit sprengen, 2017,
Conference: Collegium Alexandrinum der Universität Erlangen-Nürnberg
U. Rüde, Multiphysics simulation not yet at the extreme scale, 2017,
LDAV 2017
M. Mohr, TerraNeo: Mantle Convection Modelling and the road to Exa-Scale, SIAM Conference on
Mathematical and Computational Issues in the Geosciences 2017,
Erlangen, Germany, Sep. 11 - 14, 2017.
U. Rüde, Supercomputing for Applications in the Material Sciences, 2017,
MORE'17: Implicitly constituted materials: Modeling, Analysis and Computing
U. Rüde, M. Huber, B. Wohlmuth Resilience for Parallel Multigrid and Adaptive Mesh Refinement,
2017,
SIAM Annual Meeting 2017
U. Rüde, Algorithmic Efficiency and the Energy Wall, 2017,
PACO
U. Rüde, Numerical Simulation of Multiphase Flows at the Extreme Scale, 2017,
EPSRC Fluid Dynamics Symposium: Fluid Dynamics Modelling for Real World Applications
U. Rüde, How to solve Finite element systems beyond a trillion degrees of freedom, 2017, PARNUM
S. Bauer, Terra-Neo,
SPPEXA-Annual Meeting 2017, Garching, Germany, Mar. 20 - 21, 2017.
U. Rüde, Parallel multigrid methods for Geodynamics, MMELSP 2016, Constanta, Romania, Oct. 12
-
16, 2016.
S. Bauer, M. Mohr, U. Rüde, M. Wittmann and B. Wohlmuth, A Novel Approach for Efficient Stencil
Assembly in Curved Geometries, poster presentation,
PASC 2016 conference, Lausanne, Switzerland, June 8 - 10, 2016.
D. Bartuschat, U. Rüde, Simulation of Earth Mantle Convection, ESCO 2016, Pilsen, Czech
Republic, June 5 - 10, 2016.
U. Rüde, Parallel Textbook Multigrid Efficiency, 14th Copper Mountain Conference on
Iterative Methods, Copper Mountain, USA, Mar. 20 - 25, 2016.
U. Rüde, Multigrid at the Extreme Scale,
COSSE-Workshop 2016, Delft, Netherlands, Feb. 16, 2016.
M. Huber, Resilience for Multigrid Software at the Extreme Scale,
SPPEXA-Annual Meeting 2016, Munich, Germany, Jan. 25 - 27, 2016.
M. Huber, Resilience for Multigrid Software at the Extreme Scale,
SIAM Parallel Processing 2016, Paris, France, Apr. 12 - 15, 2016.
M. Huber, Towards controlling errors in faulty computing environments,
Seminar of the Department of Numerical Mathematics, Charles University, Prague, Czech Republic, June 8,
2016.
B. Wohlmuth, The role of mathematics in high performance computing for geophysical problems,
Magne S. Espedal Lecture, University of Bergen, Norway, Sept. 26, 2016.
B. Wohlmuth, Hybrid hierarchical concepts for large scale flow simulations,
CCOMAS 2016, Crete, Greece, June 7, 2016.
B. Wohlmuth, Reduction techniques in PDE simulation,
7th European Congress of Mathematics, Berlin, Germany, July 19, 2016.
B. Wohlmuth, The role of numerical analysis in multi-physics applications,
Heidelberg, Germany, Nov. 9, 2016.
B. Wohlmuth, Model reduction techniques in vibro-acoustics,
MAFELAP, Brunel University, UK, June 16, 2016.
B. Wohlmuth, Large scale flow simulations,
MOX, Milano, Italy, Mar. 3, 2016.
B. Wohlmuth, Reduction techniques in PDE simulation,
WCCM XII $\&$ APCOM VI, Seoul, Korea, July 26, 2016.
J. Weismüller, Fast asthenosphere motion in high-resolution global mantle flow models,
EGU 2016, Vienna, Austria, Apr. 17 - 22, 2016
S. Bauer, Efficient stencil assembly in global geodynamic models,
EGU 2016, Vienna, Austria, Apr. 17 - 22, 2016.
2015
J. Weismüller, B. Gmeiner, M. Huber, L. John, M. Mohr, U. Rüde, B. Wohlmuth and H.-P. Bunge,
Mantle Convection on Modern Supercomputers, poster presentation,
AGU Fall Meeting 2015, San Francisco, USA, Dec. 14 - 18, 2015.
L. John, Robust hybrid parallel multigrid methods for incompressible fluids, Workshop on advanced
numerical techniques in biomedical computing, Simula Oslo, Norway,
Dec. 3, 2015.
L. John, Robust parallel multigrid methods for the Stokes equations, Enumath Conference, Ankara,
Turkey, Sept. 14 - 18, 2015.
J. Weismüller, B. Gmeiner, M. Mohr, C. Waluga, B. Wohlmuth, U. Rüde and H.-P. Bunge. Mantle convection on modern
supercomputers, European Geosciences Union General Assembly 2015, Vienna, Austria, Apr. 12 -
17,
2015.
S. Baumann and M. Mohr, Aspects of Multigrid for Mantle Convection, 17th Copper Mountain
Conference on Multigrid Methods, USA, Mar. 22 - 27, 2015.
M. Huber, Resilience for Exascale Enabled Multigrid Methods, 17th Copper Mountain
Conference on Multigrid Methods, USA, Mar. 22 - 27, 2015.
L. John, Robust parallel hierarchical hybrid multigrid methods for the Stokes equations,
17th Copper Mountain Conference on Multigrid Methods, USA, Mar. 22 - 27, 2015.
U. Rüde. Visiting professor at the National University of Singapore, High Performance and Parallel
Computing for Materials Defects and Multiphase Flows, Jan. 1 - Mar. 31, 2015.
B. Wohlmuth. Local modifications – global effects, MFO Workshop, Jan. 15, 2015.
U. Rüde. Parallel multigrid solvers for geophysical flow, Workshop on Recent Advances in Parallel
and
High Performance Computing Techniques and Applications, NUS, Singapur, Jan. 14, 2015.
U. Rüde. Coupled Physical Models for Exa-Scale Computing, 9th International Conference on Computational
Physics, NUS, Singapur, Jan. 10, 2015.
B. Wohlmuth. From reduced complexity to large scale computation, AfriComp 2015, Marrakesh, Jan. 8,
2015.
2014
U. Rüde. The Emergence of Predictive Science - Computational Science and Engineering,
Indo-European Winter Academy, IIT Kanpur, Kanpur, Indien, Dec. 4, 2014.
C. Waluga. Achieving local mass-conservation in coupled flow/transport problems using continuous
pressure
spaces. Talk at IGPM Oberseminar, RWTH Aachen, Germany, Dec. 4, 2014.
B. Wohlmuth. Energy- and mass-corrections for optimal control problems, IGDK Annual Colloquium, Herrsching,
Dec. 3-5, 2014.
C. Waluga. Physics-aware solver concepts for geophysical applications on massively parallel
architectures. Numerical Methods on
High-Performance Computers, Heidelberg, Germany, Dec. 1-3, 2014.
U. Rüde. Combining Granular Dynamics and Lattice Boltzmann Methods, Gastvorlesung, IIT Delhi, Delhi,
Indien, Dec. 1, 2014.
H.-P. Bunge. Observations and Geodynamic Interpretation of Rapid Plate Motion Variations. Invited
talk in Structure and dynamics of Earth-like Planets, workshop, College de France, Nov. 21, 2014.
U. Rüde. Parallel Multigrid Solvers for Geophysical Flow Problems, Gastvorlesung, Australien
National University, Canberra, AUS, Nov. 17, 2014.
U. Rüde. Towards Exa-Scale Simulation Technology, Gastvorlesung, Universidade Federal do
Parana,
Curitiba, Brasilien, Oct. 30, 2014.
U. Rüde. Introduction to Multigrid Methods, Gastvorlesung, Universidade Federal do Paran\'{a,
Curitiba, Brasilien, Oct. 29, 2014.
B. Wohlmuth. Singularities and pollution in case of re-entrant corners, IMA Workshop on Structure-Preserving
Discretizations of Partial Differential Equations, Minneapolis,
Oct. 22, 2014.
B. Wohlmuth. From reduced complexity to large scale computation, Chicago, Oct. 19, 2014.
U. Rüde. Optimal Algorithms for Elliptic PDE in the Presence of Singularities, 10th Workshop on
Mathematical Modelling of Environmental and Life Sciences Problems, Constanta, Romania, Oct. 16, 2014.
U. Rüde. Challenges and Opportunities of Extreme Scale Numerical Simulation, Seminarul
Stiintific de Matematica Aplicata, Ovidius-Universitatea, Constanta, Romania, Oct. 15, 2014.
U. Rüde. Towards Exascale Simulation Technology, Ringvorlesung "Simulationswissenschaften", TU
Clausthal,
Göttingen, Oct. 1, 2014.
U. Rüde. Perspectives of Granular Dynamics and Lattice Boltzmann Methods in Porous Media
Applications, Workshop "Reactive Flows in Deformable, Complex Media",
Oberwolfach, Sept. 23, 2014.
B. Wohlmuth. From reduced complexity to large scale computation, PTM-DMV 2014, Pozna, Sept. 19,
2014.
U. Rüde. Challenges and Opportunities of Extreme Scale Numerical Simulation, Lectures on Numerical
Mathematics and Applications, Uni Würzburg,
Würzburg, Aug. 27, 2014.
U. Rüde. Is 2.44 trillion unknowns the largest finite element system that can be solved today?, 4th
European Seminar on Computing (ESCO 2014), Pilsen, Jun 16, 2014.
U. Rüde. Is 2.44 trillion unknowns the largest finite element system that can be solved today,
Einladung,
Charles University, Prag, Jun 09, 2014.
B. Wohlmuth. Consistent modelling of interface conditions for multi-physics applications, Charles University
Prague, Jun 9, 2014.
B. Wohlmuth. Dual and hybrid hierarchical grids for fast Stokes solvers, Schnelle iterative
Löser, MFO, May 11-16, 2014.
J. Weismüller, B. Gmeiner, M. Mohr, C. Waluga, H.-P. Bunge, Developing an exascale model for mantle
convection, European Geosciences Union General Assembly 2014, Vienna, Austria, Apr. 27 - May 02,
2014.
U. Rüde. Is 2,44 trillion unknowns the largest finite element system that can be solved
today?,
Workshop
"Advances in Numerical Algorithms and High Performance Computing", London, Apr. 14, 2014.
C. Waluga. Discretization Concepts for Terra-Neo. ExaStencils workshop 2014, University of Dresden,
Germany, Mar. 31 - Apr. 1, 2014.
B. Wohlmuth. Duality and hierarchy in modern finite element analysis, Department of Mathematics,
The
University of Texas at Austin, Mar. 21, 2014.
U. Rüde. The waLBerla Framework: Multi-physics Simulations on Heterogeneous Platforms, 16th
SIAM
Conference on Parallel Processing for Scientific Computing (PP 14), SIAM, Portland, USA, Feb. 20, 2014.
B. Wohlmuth. Numerical schemes for variational inequalities in PDE based contact problems, BIRS,
Banff, Feb. 19, 2014.
U. Rüde, Towards an Integrated Performance Oriented Co-Design Methodology, Dagstuhl Seminar
"Connecting Performance Analysis and Visualization to Advance Extreme Scale Computing", Jan. 09, 2014.
2013
B. Gmeiner, C. Waluga, U. Rüde, B. Wohlmuth, Performance and Scalability of Hierarchical Hybrid
Multigrid Solvers for Stokes Systems, New Algorithms for Exascale Computing, University of Cologne,
Germany, Dec. 5, 2013.
U. Rüde, Towards Exa-Scale Simulation for Science and Engineering, Invitation, EDF, Paris,
Nov.
29, 2013.
B. Gmeiner, U. Rüde, C. Waluga, and B. Wohlmuth, Mathematics meets high performance computation in
geo-physics applications: Highly scalable multigrid Stokes solver for buoyancy driven non-isothermal
Stokes
simulation, 2014 DFG Math Calendar, p.20 (October)
U. Rüde, New Math for Exascale Computational Science?, DOE Workshop on Applied Mathematics
Research for Exascale Computing, Washington Aug. 22, 2013.
H.-P. Bunge. Data Assimilation in Global Mantle Flow Models: Theory, Modelling and Uncertainties to
Reconstruct Earth Structure Back in Time, invited lecture, SIAM GS13, Jun 17-20, Padua, Italy, 2013.
B. Gmeiner, U. Rüde, B. Wohlmuth, Peta-Scale Multigrid for the Stokes System with Finite
Elements, 9th International Conference on Large-Scale Scientific Computations, Sozopol, Bulgaria,
Jun.
06, 2013.
U. Rüde, Introduction to Parallel Scientific Computing, Workshop "Lecture on Numerical
Mathematics and Applications", Zaragoza, Spain, Jun. 03, 2013.
J. Weismüller, M. Mohr, H.-P. Bunge, Convective patterns in a 2d mantle convection simulation,
European Geosciences Union General Assembly 2013, Vienna, Austria, Apr. 07-12, 2013.
U. Rüde, Textbook parallel efficiency for multigrid, Weizmann Workshop 2013 on Multilevel
computational methods and optimization, Israel, Apr. 04, 2013.
B. Gmeiner, U. Rüde, PetaScale Finite Element Methods for Hierarchical Hybrid Grids using Hybrid
Parallelization, 16th Copper Mountain Conference on Multigrid Methods, Copper Mountain, Colorado,
USA,
Mar. 19, 2013.
B. Wohlmuth, Consistent Modeling of Interface Conditions for Multi-Physics Applications, SIAM
Conference on Computational Science and Engineering, Boston, USA, Mar. 01, 2013.
U. Rüde, Towards Exascale Computing: Multilevel Methods and Flow Solvers for Millions of
Cores,
Invitation, IWR - Institutskolloquium, Interdisciplinary Center for Scientific Computing, Heidelberg, Jan.
25,
2013.
TerraNeo