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Mathematisch-Naturwissenschaftliche FakultätProf. Dr. Axel Klawonn

EXASTEEL Publications

Journal Publications from EXASTEEL

 

Published or accepted

  • Axel Klawonn, Martin Lanser, and Oliver Rheinbach, Nonlinear FETI-DP and BDDC methods, SIAM J. Scientific Computing, 36 (2), pp. A311-C239, 2014. Open full paper download. Download at publisher’s site:http://dx.doi.org/10.1137/130920563.

  • Jörg Schröder, Ashutosh Gandhi, and Daniel Balzani. Two-scale modeling of DP steel incorporating distributed properties inside the micro-constituents. Procedia Engineering, 81:13901395, 2014. http://dx.doi.org/10.1016/j.proeng.2014.10.162

  • Daniel Balzani, Ashutosh Gandhi, Masato Tanaka, and Jörg Schröder. Numerical calculation of thermo-mechanical problems at large strains based on a robust approximation scheme for tangent stiffness matrices. Computational Mechanics. Full Paper

  • Thomas Josef Baron, Kirill Khlopkov, Thomas Pretorius, Daniel Balzani, Dominik Brands and Jörg Schröder, Modeling of microstructure evolution with dynamic recrystallization in finite element simulations of martensitic steel, Steel Research International. Full Paper

  • Axel Klawonn, Martin Lanser, and Oliver Rheinbach, Toward Extremely Scalable Nonlinear Domain Decomposition Methods for Elliptic Partial Differential Equations, SIAM J. on Sci. Comp., Vol. 37, No. 6, December 8, 2015, pp. C667-C696. pdf
     
  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, and Matthias Uran. Nonlinear FETI-DP and BDDC Methods: A Unified Framework and Parallel Results, Accepted for publication in SIAM J. Sci. Comp.,  August 2017.
     
  • A. Klawonn, M. Lanser, O. Rheinbach, Nonlinear BDDC Methods with Approximate Solvers. Electronic Transactions on Numerical Analysis (ETNA), Vol. 49, pp. 244-273, 2018. Preprint. https://doi.org/10.1553/etna_vol49s244
     
  • Axel Klawonn, Stephan Köhler, Martin Lanser, Oliver Rheinbach, Computational Homogenization with Million-way Parallelism using Domain Decomposition Methods. Computational Mechanics. Springer Nature, published online, July 2019. Preprint, Shared Link, and https://doi.org/10.1007/s00466-019-01749-5.
     
  • Alexander Heinlein, Axel Klawonn, Martin Lanser, Janine Weber, Machine Learning in Adaptive Domain Decomposition Methods -Predicting the Geometric Location of Constraints. SIAM J. Sci. Comput. 41 (2019), no. 6, A3887-A3912. Preprint and https://doi.org/10.1137/18M1205364.
     
  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, Janine Weber. Preconditioning the coarse problem of BDDC methods - Three-level, algebraic multigrid, and vertex-based preconditioners, Electronic Transaction on Numerical Analysis, 2019, Volume 51, pp. 432-450, 2019. Preprint and https://doi.org/10.1553/etna_vol51s432

 

 

Conference Proceedings or Technical Reports from EXASTEEL

 

Published or accepted (peer-reviewed)

  • Axel Klawonn, Martin Lanser, Patrick Radtke, and Oliver Rheinbach, On an Adaptive Coarse Space and on Nonlinear Domain Decomposition, Domain Decomposition Methods in Science and Engineering XXI, Jocelyne Erhel, Martin J. Gander, Laurence Halpern, Geraldine Pichot, Taoufik Sassi, and Olof B. Widlund (Eds.), Springer-Verlag, Lecture Notes in Computational Science and Engineering, Vol. 98, pp. 71-83, 2014. http://dx.doi.org/10.1007/978-3-319-05789-7_6 Preprint at INRIA

  • Axel Klawonn, Martin Lanser, and Oliver Rheinbach, A Nonlinear FETI-DP Method with an Inexact Coarse Problem, Proceedings of the 22nd International Conference on Domain Decomposition Methods in Science and Engineering, Lugano, Switzerland, September 2013. Editors: Dickopf, T., Gander, M., Krause, R., Pavarino, L. Springer Lecture Notes on Computational Science and Engineering, 2015. 12p. Submitted January 2014, revised version July 2014. Accepted for publication October 2014. Preprint

  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, Holger Stengel and Gerhard Wellein, Hybrid MPI/OpenMP parallelization in FETI-DP methods, Proceedings of "Recent Trends in Computational Engineering - CE2014", Springer Lecture Notes on Computational Science and Engineering, 2015, accepted for publication. Preprint.

  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, FE^2TI: Computational Scale Bridging for Dual-Phase Steels. Proceedings of ParCo 2015, pp. 797 - 806, IOS Series: Advances in Parallel Computing, Volume 27, Parallel Computing: On the Road to Exascale, 2016. Preprint.

  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, A Highly Scalable Implementation of Inexact Nonlinear FETI-DP without Sparse Direct Solvers. Proceedings of the ENUMATH Conference 2015, Springer Lect. Notes Comput. Sci. Eng., Vol. 112,  Preprint.

  • Allison H. Baker, Axel Klawonn, Tzanio Kolev, Martin Lanser, Oliver Rheinbach, Ulrike Meier Yang, Scalability of Classical Algebraic Multigrid for Elasticity to Half a Million Parallel Tasks, Software for Exascale Computing - SPPEXA 2013-2015, vol. 113 Springer LNCSE, pages 113--140, 2016. Preprint.

  • D. Balzani, A. Gandhi, A. Klawonn, M. Lanser, O. Rheinbach, J. Schröder, One-way and fully-coupled FE^2 methods for heterogeneous elasticity and plasticity problems: Parallel scalability and an application to thermo-elastoplasticity of dual-phase steels, Software for Exascale Computing - SPPEXA 2013-2015, vol. 113 Springer LNCSE, pages 91--112, 2016. Preprint.
     
  • A. Klawonn, M. Lanser, B. Niehoff, P. Radtke, O. Rheinbach, Newton-Krylov-FETI-DP with Adaptive Coarse Spaces, Accepted for publication to the proceedings of the International Conference on Domain Decomposition Methods 23, Springer LNCSE, February 2016.
     
  • A. Klawonn, M. Lanser, O. Rheinbach, M. Uran, New Nonlinear FETI-DP Methods Based on a Partial Nonlinear Elimination of Variables, Accepted for publication to the proceedings of the International Conference on Domain Decomposition Methods 23, Springer LNCSE, February 2016.
     
  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, Using Algebraic Multigrid in Inexact BDDC Domain Decomposition Methods, Proceedings of the International Conference on Domain Decomposition Methods 24. Springer Lecture Notes on Computational Science and Engineering, Vol. 125, 2018, pp. 425-433, https://doi.org/10.1007/978-3-319-93873-8_40.
     
  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, Matthias Uran, On the Accuracy of the Inner Newton Iteration in Nonlinear Domain Decomposition, Proceedings of the International Conference on Domain Decomposition Methods 24. Springer Lecture Notes on Computational Science and Engineering, Vol. 125, 2018, pp. 435-443. https://doi.org/10.1007/978-3-319-93873-8_41
     
  • M. Wittmann, G. Hager, R. Janalík, M. Lanser, A. Klawonn, O. Rheinbach, O. Schenk, and G. Wellein, Multicore Performance Engineering of Sparse Triangular Solves Using a Modified Roofline Model, Proceedings of the 30th IEEE International Symposium on Computer, Architecture and High Peformance Computing (SBAC-PAD), October 2018.
     

  • A. Eftekhari, M. Bollhöfer, and O. Schenk. Distributed memory sparse inverse covariance matrix estimation on high-performance computing architectures. In Proceedings of the International Conference for High Per- formance Computing, Networking, Storage, and Analysis, SC ’18, pages 20:1–20:12, Piscataway, NJ, USA, 2018. IEEE Press.
     

  • A. Gandhi, D. Balzani, D. Brands, L. Scheunemann, and J. Schröder. A computational two-scale model for the simulation of dual-phase steels under cyclic loading. Proceedings in Applied Mathematics and Mechanics, accepted, 2018.
     

  • A. Heinlein, A. Klawonn, J. Knepper, and O. Rheinbach. An Adaptive GDSW Coarse Space for Two-Level Overlapping Schwarz Methods in Two Dimensions. Springer-Verlag, Lect. Notes Comp. Sci. Eng. Vol. 125, Nov. 2018. Proceedings of the International Conference on Domain Decomposi- tion Methods 24.
     

  • A. Heinlein, A. Klawonn, O. Rheinbach, and O. Widlund. Improving the Parallel Performance of Overlapping Schwarz Methods by Using a Smaller Energy Minimizing Coarse Space. Springer-Verlag, Lect. Notes Comp. Sci. Eng. Vol. 125, Nov. 2018. Proceedings of the International Conference on Domain Decomposition Methods 24.

 

 

Other

  • Axel Klawonn, Martin Lanser, and Oliver Rheinbach, EXASTEEL - Computational Scale Bridging using a FE^2TI approach with (ex_nl/FE^2), JUQUEEN Extreme Scaling Workshop 2015. Report

  • Ashutosh Gandhi, Daniel Balzani, and Jörg Schröder. Modeling advanced high-strength steels based on direct micro-macro calculations. Proceedings of Applied Mathematics and Mechanics, 14:587588, 2014. http://dx.doi.org/10.1002/pamm.201410281
     
  • A. Klawonn, M. Lanser, L. Scheunemann, J. Schröder, Hochleistungsrechnen trifft Hochleistungsstahl: Herausforderungen zweier Welten, UNIKATE, Universität Duisburg-Essen, to appear 2017.
     
  • A. Klawonn, M. Lanser, O.Rheinbach, EXASTEEL - From Micro to Macro Properties, InSiDE, Autumn 2016, pages 80 - 85.
     
  • Axel Klawonn, Martin Lanser, Oliver Rheinbach, Gerhard Wellein, Markus Wittmann, Energy Efficiency of Nonlinear Domain Decomposition Methods. TR, 2018. Download

 

Talks given on EXASTEEL

 

2019

  • Oliver Rheinbach, Computational Scale-Bridging with Million-way Concurrency, Advanced Solvers for modern Architectures 2019 November 11-13, 2019, Münster, Germany
     
  • Oliver Rheinbach, Computational Homogenization with Million-way Parallelism, SPPEXA Symposium 2019, October 21-23, 2019, Dresden, Germany
     
  • Oliver Rheinbach, Supercomputing für neue Materialien, Einweihung des neuen Compute Clusters, URZ, Technische Universität Bergakademie Freiberg, 27.9.2019
     
  • Oliver Rheinbach, Large Scale Homogenization using FE2TI, ICIAM 2019, Valencia, July 15-19, 2019
     

  • Matthias Uran, Simulation of simple contact for dual-phase steel: Towards the Nakajima test, PhD-Workshop (Bochum-Essen-Köln-Freiberg) in Kevelaer, Feb. 2019
     

  • Matthias Uran, Large scale simulations of sheet metal forming with contact using FE2TI, Workshop DLR and University of Cologne in Cologne, Sep. 2019
     

  • Matthias Uran, HPC-based simulation of the Nakajima test - a virtual forming limit curve, SPPEXA Final Symposium in Dresden, Oct. 2019
     

  • Martin Lanser, EXASTEEL: developments in nonlinear and linear domain decomposition methods, GAMM Annual Meeting in Wien, 2019.

 

2018

  • Axel Klawonn, New Aspects on Nonlinear Domain Decomposition Solvers on the Extreme Scale, SIAM PP 18, Tokyo, Japan, March 2018

  • Martin Lanser, Comparison of Different Inexact BDDC Variants for Systems of PDEs, SIAM PP 18, Tokyo, Japan, March 2018
     

  • Matthias Uran, Simulation of Simple Contact for Dual-Phase Steel: Towards the Nakajima Test, PhD-Workshop (Bochum-Essen-Köln-Freiberg) in Kevelaer, Feb 2018.
     

  • Matthias Uran, Simulation of Simple Contact for Dual-Phase Steel: Towards the Nakajima Test, Workshop TKS and Bochum-Essen-Köln in Dortmund, July 2018.
     

  • Matthias Uran, Simulation of Simple Contact for Dual-Phase Steel: Towards the Nakajima Test, Workshop DLR and University of Cologne in Cologne, Oct 2018.
     

  • Martin Lanser, Comparison of Different Inexact BDDC Variants for Systems of PDEs, SIAM PP Conference in Tokyo, Japan, Mar 2018.
     

  • Martin Lanser, FE2TI: Million Way Parallelism in Computational Homogenization, Workshop DLR and University of Cologne in Cologne, Mar 2018.
     

  • Martin Lanser, Comparison of Various Extremely Parallel Inexact BDDC Approaches and their Application to Nonlinear Problems, International Domain Decomposition Conference in St.John’s, Newfoundland, July 2018.
     

  • Axel Klawonn, Machine Learning in adaptive domain decomposition methods - predicting the geometric location of constratins, International Domain Decomposition Conference, St. John’s, Newfoundland, Canada, July 2018.
     

  • Axel Klawonn, Power and Energy Efficiency of Nonlinear Domain Decomposition Methods, International Domain Decomposition Conference, St.John’s, Newfoundland, Canada, July 2018.
     

  • Axel Klawonn, Extreme Scale Computing für neue Werkstoffe, Einweihung des Parallelrechners LiDo3, TU Dortmund, May 2018.
     

  • Axel Klawonn, Saving Energy and Avoiding Communication with Nonlinear Domain Decomposition Methods, European Congress on Computational Mechanics, (ECCM), Glasgow, UK, June 2018.
     

  • Axel Klawonn, FE2TI - Combining Computational Scale Bridging and Domain Decomposition Solvers for Dual-Phase Steel, 89th Annual GAMM Conference, Munich, March 2018.
     

  • Axel Klawonn, EXASTEEL - Extreme Scale Computing for New Materials, CoSaS 2018 - International Symposium on Computational Science at Scale, University of Erlangen-Nuremberg, September 2018.
     

  • Axel Klawonn, EXASTEEL - Extreme Scale Computing for New Materials, Second French-German-Japanese Workshop on Programming and Computing for Exascale and Beyond, German Embassy, Tokyo, Japan, October 2018.
     

  • Axel Klawonn, Extreme Scale Computing for New Materials, Colloquium, The University of Tokyo, Tokyo, Japan, October 2018.
     

  • Axel Klawonn, New Aspects of Nonlinear Domain Decomposition Solvers at the Extreme Scale, SIAM Conference on Parallel Processing, Tokyo, March 2018.
     

  • Oliver Rheinbach, Exascale Computing for New Materials, 11th Workshop on Analysis and Advanced Numerical Methods for Partial Differential Equations, Särkisaari, Aug 2018.
     

  • Ashutosh Gandhi, Simulation of DP steel microstructures for the prediction of macroscopic kinematic hardening, Kevelaer, Feb 2018.
     

  • Daniel Balzani, A computational two-scale model for the simulation of dual-phase steels under cyclic loading, GAMM, München, Mar 2018.

2017

  • Axel Klawonn, Nonlinear FETI-DP Methods for Nonlinear Problems, DD XXIV, Svalbard, Norway, Feb 2017
     
  • Axel Klawonn, FETI-DP and BDDC for Composite Materials - Adaptive Coarse Spaces in 3D, DD XXIV, Svalbard, Norway, Feb 2017
     
  • Axel Klawonn, FETI-DP, BDDC, and GDSW for Composite Materials - Adaptive Coarse Spaces in 3D, Workshop in Honor of Olof Widlund, New York, USA, Feb 2017
     
  • Axel Klawonn, Avoiding Communication by Nonlinear Domain Decomposition Methods, 2nd Workshop on Power-Aware Computing, Max-Planck-Gesellschaft, Schloss Ringberg, Jul 2017
     
  • Axel Klawonn, Some recent results EXASTEEL, SPPEXA Annual Meeting, TU Munich, Garching, Mar 2017
     
  • Axel Klawonn, Robust and Parallel Scalable Domain Decomposition Methods in Solid Mechanics, Mathematical Colloquium, University of Stuttgart, Dec 2017
     
  • Axel Klawonn, Towards Computing on the Extreme Scale in Nonlinear Solid Mechanics, AICES Seminar, RWTH Aachen University, Jul 2017
     
  • Martin Lanser, Nonlinear BDDC, DD XXIV, Svalbard, Norway, Feb 2017
     
  • Martin Lanser, Highly Scalable Implicit Solvers for Elasticity Problems on More than Half a Million Parallel Tasks, SIAM CSE, Atlanta, USA, Mar 2017
     
  • Martin Lanser, A Framework for Nonlinear FETI-DP and BDDC Methods, PARNUM, Waischenfeld, Apr 2017
     
  • Martin Lanser, On the use of AMG Methods Designed for Elasticity Problems in Inexact Methods, 17th GAMM Workshop Applied and Numerical Linear Algebra, Cologne, Sep 2017
     
  • Matthias Uran, Nonlinear FETI-DP Methods for Nonlinear Problems, PhD-Workshop (Essen-Köln-Freiberg), Kevelaer, Feb 2017
     
  • Matthias Uran, Nonlinear FETI-DP Methods for Nonlinear Problems, GAMM Annual Meeting, Weimar, Germany, Mar 2017
     
  • Matthias Uran, Simulation of Simple Contact for Dual-Phase Steel: Towards the Nakajima Test, Workshop DLR and University of Cologne, Cologne, Oct 2017
     
  • Markus Wittmann, Performance analysis of sparse triangular solve on current hardware architectures, 17th GAMM Workshop on Applied and Numerical Linear Algebra, Cologne, Sep 2017.
     
  • Daniel Balzani, Aspects of modeling and simulation of multiphase steels based on direct micro-macro transitions, Invited seminar at Saarland University, Saarbrücken, 2017.
     
  • Daniel Balzani, Construction of statistically similar RVEs for the direct micro-macro simulation of multiphase steels, GSIS International Winter School, Sendai, Japan, 2017.
     
  • Daniel Balzani, Coupled two-scale modeling and simulation of complex materials - application to multiphase steels, Summer school "Materials 4.0", TU Dresden, 2017.
     
  • Ashutosh Gandhi, Influence of microstructure morphology on multi-scale modeling of low-alloyed TRIP steels, SIAM Conference on Computational Science and Engineering, Atlanta, USA, 2017.
     
  • Ashutosh Gandhi, Coupled two-scale simulation of multiphase steels, Bochum, 2017.
     
  • Lisa Scheunemann, Modeling of polycrystals using a fcc crystal visco-plasticity theory with aspects on robust complex-step derivative approximation for the tangent moduli, SIAM Conference on Computational Science and Engineering, Atlanta, USA, 2017.  
     
  • Lisa Scheunemann, Comparison of different polycrystalline unitcells / SSRVEs for the description of macroscopic yield curves, World Congress on Computational Mechanics, Barcelona, Spain, 2017.
     
  • Oliver Rheinbach, Domain Decomposition for Exascale Computing, Strobl, Austria, Sep 2017
     
  • Oliver Rheinbach, Nonlinear Domain Decomposition Solvers on the Exascale, 17th GAMM Workshop Applied and Numerical Linear Algebra, Cologne, Sep 2017
     
  • Oliver Rheinbach, Domain Decomposition for Extreme Scale Computing, Workshop in Honor of Olof Widlund, New York, USA, Feb 2017
     
  • Oliver Rheinbach, FE2TI - An Extremely Scalable Computational Homogenization Approach in 3D, SIAM Conference on Computational Science \& Engineering, Atlanta, USA, Feb 2017
     
  • Oliver Rheinbach, Parallel Nonlinear Domain Decomposition in Multiscale Problems, Platform for Advanced Scientific Computing (PASC), Lugano, Switzerland, Jun 2017
     
  • Olaf Schenk, ISC 2017 High Performance Conference, Session on Algorithms for Extreme Scale in Practice, Frankfurt, Germany, June 2017
     
  • Olaf Schenk, HPCSE17, University of Ostrava, IT4Innovations National Supercomputing Center, Czech Republic, May 2017

2016

  • Ashutosh Gandhi, A Computational Two-Scale Model for the Simulation of Micro-Heterogeneous Low-Alloyed TRIP Steels, GAMM Annual Meeting, 2016
     
  • Ashutosh Gandhi, A Computational Multi-Scale Model for Low-Alloyed TRIP-Steels, WCCM XII and APCOM VI, Seoul, South Korea, 2016
     
  • Ashutosh Gandhi, Influence of Microstructure Morphology on Multi-Scale Modeling of Low-Alloyed TRIP Steels, EUROMECH 584 - Multi-Uncertainty and Multi-Scale Methods and Related Applications, Porto, Portugal, 2016
     
  • Axel Klawonn, Nonlinear Preconditioning - Towards Computing on the Extreme Scale, Joint DMV-GAMM Annual Conference, Brunswick, Germany, March 7 - 11, 2016
     
  • Axel Klawonn, A Framework for Nonlinear FETI-DP and BDDC Domain Decomposition Methods, SIAM Conference on Parallel Processing (SIAM PP16), Paris, France, April 12 - 15, 2016
     
  • Axel Klawonn,  A Framework for Nonlinear FETI-DP Methods - Towards Computing on the Extreme Scale, 5th European Seminar on Computing (ESCO 2016), Pilzen, Czech  Republic, June 5-10, 2016 
     
  • Axel Klawonn, Auf dem Weg zum Extreme Scale Computing in den Materialwissenschaften, Kolloquium anl\"asslich der Inbetriebnahme des Hochleistungsrechners magnitUDE, Universit\"at Duisburg-Essen, Duisburg, Germany, June 28, 2016
     
  • Axel Klawonn, Towards Computing on the Extreme Scale in Nonlinear Structural Mechanics, Fraunhofer-Institut f\"ur Techno- und Wirtschaftsmathematik, Kaiserslautern, Germany, June 17, 2016
     
  • Axel Klawonn, FE2TI - An Approach for Tuning FE$^2$ Toward Extreme Scale Computing, GAMM-FA - Data Driven Modeling and Numerical Simulation of Microstructured Materials, Universit\"at Stuttgart, Germany, September 26-27, 2016
     
  • Martin Lanser, Scalable Nonlinear Domain Decomposition Methods, SPPEXA Conference in Munich, 2016
     
  • Martin Lanser, Scalability of Classical Algebraic Multigrid for Elasticity to Half a Million Parallel Tasks, GAMM Annual Meeting, 2016
     
  • Martin Lanser, FE2TI: Computational Scale Bridging for Dual-Phase Steels, Workshop DLR and University of Cologne, 2016
     
  • Martin Lanser, FE2TI - Computational Scale Bridging for Dual-Phase Steels, SIAM PP in Paris, 2016
     
  • Martin Lanser, FE2TI - Computational Scale Bridging for Dual-Phase Steels, Workshop University of Cologne and TU Bergakademie Freiberg, 2016
     
  • Stefan Prüger, Modeling of Low-Alloyed TRIP-Steels Based on Direct Micro-Macro Simulations, ECCOMAS, Crete, Greece, 2016
     
  • Oliver Rheinbach, Parallel Implicit Solvers for Partial Differential Equations, Seminar of the Work Group on Complex and Distributed IT Systems, TU Berlin, January 2016
     
  • Oliver Rheinbach, Scaling Nonlinear FETI-DP Domain Decomposition Methods to 786452 Cores, SIAM PP in Paris, 2016 
     
  • Jörg Schröder, Advanced High-Strength Steel Simulations based on Direct Micro-Macro Calculations, SPPEXA Conference in Munich, 2016
     
  • Gerhard Wellein: Performance Engineering - Welcome to the world of FLOPs, Bytes and Cycles! Invited talk at 45th SPEEDUP Workshop on High-Performance Computing, Basel, Switzerland, September 15, 2016. 
     
  • Gerhard Wellein: Performance Engineering - Welcome to the world of FLOPs, Bytes and Cycles! Invited talk at University of Exeter, Exeter, UK, October 25, 2016. 
     
  • Olaf Schenk, Applications of Large-Scale Nonlinear Optimization at the Petascale: Achievements and Perspectives, Zurich Initiative on Computational Economics, Zurich, Switzerland, February 2016. 
     
  • Olaf Schenk, Applications of Large-Scale Nonlinear Optimization at the Petascale: Achievements and Perspectives, Zurich Initiative on Computational Economics, Zurich, Switzerland, February 2016.

2015

  • Martin Lanser (Universität zu Köln), FE2TI: Computational Scale Bridging for Dual-Phase Steels, ParCo 2015, Edinburgh, 1.-4. September 2015.

  • Oliver Rheinbach (TU Bergakademie Freiberg), Domain Decomposition Methods in Computational Scale Bridging for Extreme Scale Computations, 23rd International Conference on Domain Decomposition Methods, July 6-10, 2015, South Korea.

  • Oliver Rheinbach (TU Bergakademie Freiberg), Axel Klawonn (Universität zu Köln), Computational Scale Bridging using PETSc on 458K Cores, Celebrating 20 years of Computational Science with PETSc, Chicago, June 15-18, 2015.

  • Axel Klawonn (Universität zu Köln), Parallel scalable FETI methods for nonlinear problems, SIAM Conference on Computational Sciene and Engineering (CSE), Minisymposium Large Scale Solution Methods for Coupled and Nonlinear Problems, Salt Lake City, USA, March 14-18, 2015.

  • Oliver Rheinbach, EXASTEEL - Bridging Scales for Multiphase Steels, JUQUEEN Scaling Workshop, Jülich, February 5-6, 2015.

  • Dominik Brands (Universität Duisburg-Essen), Simulation of DP steel using SSRVEs based on 3D EBSD-FIB and experimental data, Gamm Seminar on Microstructures, Regensburg, January 16-17, 2015.

 

2014

  • Martin Lanser, (Universität zu Köln), A massively parallel domain decomposition / AMG method for elasticity problems, Numerical Methods for High-Performance Computing, Heidelberg, December 1-3, 2014.

  • Jörg Schröder (Universität Duisburg-Essen), Two-scale modeling of DP steel incorporating distributed properties inside the micro-constituents, 11th International Conference on Technology of Plasticity, October 19-24, Nagoya, Japan, 2014.

  • Martin Lanser, (Universität zu Köln), New Approaches to Nonlinear Domain Decomposition, 3rd International Workshop on Computational Engineering CE 2014, Stuttgart, October 6-10, 2014.

  • Axel Klawonn (Universität zu Köln), Domain Decomposition Methods - Part II: Parallel Scalability and Nonlinear Approaches, Invited Plenary Talk Woudschoten Conferentie 2014, Woudschoten/Zeist, The Netherlands, October 8-10, 2014.

  • Martin Lanser, (Universität zu Köln), A massively parallel domain decomposition / AMG method for elasticity problems, Computational Science Day 2014, Cologne, September 29, 2014.

  • Axel Klawonn (Universität zu Köln), Parallel domain decomposition methods for nonlinear problems, Invited Plenary, Workshop Modelling and Simulation in Biomechanics, Mariatrost/Graz, Austria, September 15-17, 2014.

  • Oliver Rheinbach, Scalable Nonlinear FETI-DP Methods, 8th International Workshop on Parallel Matrix Algorithms and Applications, Lugano July 2-4, 2014.

  • Axel Klawonn (Universität zu Köln), Domain decomposition methods - Towards extreme scalability using new nonlinear approaches and enhanced robustness using adaptive coarse spaces, Conference: ACOMEN 2014 - 6th International Conference on Advanced Computational Methods in Engineering, Invited Plenary Talk, Ghent, Belgium, June 23-28, 2014.

  • Holger Stengel (Universität Erlangen), Performance Engineering of Stencil Updates on Modern Processors, SPPEXA PhD Seminar, Erlangen (Germany), June 18, 2014.

  • Daniel Balzani (Technische Universität Dresden), Approach for the incorporation of microscopically distributed properties in DP steels, IUTAM Symposium on Micromechanics of Defects in Solids, June 09-13, Seville, Spain, 2014.

  • Axel Klawonn (Universität zu Köln), Domain Decomposition Methods - Towards Extreme Scalability Using Nonlinear Approaches, Invited Talk, Workshop Exploiting Different Levels of Parallelism for Exascale Computing, Conference: ACMS-ICS, Munich, Germany, June 10, 2014.

  • Ashutosh Gandhi (Technische Universität Dresden), Modeling advanced high strength steels based on direct micro-macro calculations, Annual Conference of the GAMM, March 10-14, Erlangen, 2014.

  • Martin Lanser, (Universität zu Köln), New Approaches to Nonlinear Domain Decomposition, GAMM Annual Meeting 2014, Erlangen, March 10-14, 2014.

 

2013

  • Martin Lanser (Universität zu Köln), New Approaches to Nonlinear Domain Decomposition, SPPEXA Workshop New Algorithms for Exascale Computing, University of Cologne, December 3-6, 2013.

  • Axel Klawonn (Universität zu Köln), Nonlinear and Robust FETI-DP Domain Decomposition Methods, Conference: Implicitly Constituted Materials: Modeling, Analysis, and Computing, Chateau Liblice, Invited Plenary Talk, Czech Republic, November 24-27, 2013.

  • Axel Klawonn (Universität zu Köln), Scalable Domain Decomposition Methods in Parallel High Performance Computing and Applications in Medicine and Engineering, Workshop Computational Sciences in Cologne, University of Cologne, October 25, 2013.

  • Martin Lanser (Universität zu Köln), Nonlinear and Nonoverlapping Domain Decomposition - Nonlinear FETI-DP, Workshop: SPPEXA Doctoral retreat - Application and Algorithm: Combination of software tools and programming, Darmstadt, September 16-20, 2013.

  • Ashutosh Gandhi (Universität Duisburg-Essen), Bridging scales for multiphase steels, Workshop: SPPEXA Doctoral retreat - Application and Algorithm: Combination of software tools and programming, Darmstadt, September 16-20, 2013.

  • Oliver Rheinbach (TU Freiberg), Nonlinear FETI-DP Methods, Conference: 22nd International Conference on Domain Decomposition Methods in Science and Engineering, Invited Plenary Talk, University of Lugano, Switzerland, September 16-20, 2013.

  • Holger Stengel (Universität Erlangen), Performance Modeling of Stencil Codes, International Conference on Parallel Computing, Technische Universität München, September 10-13, 2013.

  • Axel Klawonn (Universität zu Köln), Nonlinear FETI-DP and BDDC Methods, Conference: Domain Decomposition Methods for Optimization with PDE Constraints, Invited Plenary Talk, Monte Verita, Ascona, Switzerland, September 1-6, 2013.

  • Oliver Rheinbach (TU Freiberg), Nonlinear FETI-DP - Local Flops are free, Conference: ISC, SPPEXA Satellite Event, Leipzig, June 19, 2013.

  • Axel Klawonn (Universität zu Köln), Nonlinear FETI-DP and BDDC Methods, Conference: MAFELAP 2013 - The Mathematics of Finite Elements and Applications, Brunel University, United Kingdom, June 11-14, 2013.

  • Holger Stengel (Universität Erlangen), Performance Modeling of Stencil Codes, Terra-Neo internal workshop, Pommersfelden (Germany), May 16-18, 2013.

  • Oliver Rheinbach (TU Freiberg), Nonlinear FETI-DP Methods, Conference: High Performance Computing in Science and Engineering, Soláň, Invited Plenary Talk, Soláň, Czech Repulic, May 27-30, 2013.