Markus Wittmann

According to our database, Markus Wittmann authored at least 25 papers between 2009 and 2021.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2021

Energy efficiency of nonlinear domain decomposition methods.

Axel Klawonn, Martin Lanser, Oliver Rheinbach, Gerhard Wellein, Markus Wittmann

Int. J. High Perform. Comput. Appl., 2021

2020

EXASTEEL: Towards a Virtual Laboratory for the Multiscale Simulation of Dual-Phase Steel Using High-Performance Computing.

Axel Klawonn, Martin Lanser, Matthias Uran, Oliver Rheinbach, Stephan Köhler, Jörg Schröder, Lisa Scheunemann, Dominik Brands, Daniel Balzani, Ashutosh Gandhi, Gerhard Wellein, Markus Wittmann, Olaf Schenk, Radim Janalík

Proceedings of the Software for Exascale Computing - SPPEXA 2016-2019, 2020

2018

Multicore Performance Engineering of Sparse Triangular Solves Using a Modified Roofline Model.

Markus Wittmann, Georg Hager, Radim Janalík, Martin Lanser, Axel Klawonn, Oliver Rheinbach, Olaf Schenk, Gerhard Wellein

Proceedings of the 30th International Symposium on Computer Architecture and High Performance Computing, 2018

2017

Lattice Boltzmann Benchmark Kernels as a Testbed for Performance Analysis.

Markus Wittmann, Viktor Haag, Thomas Zeiser, Harald Köstler, Gerhard Wellein

CoRR, 2017

2016

Hybrid Parallel Multigrid Methods for Geodynamical Simulations.

Simon Bauer, Hans-Peter Bunge, Daniel Drzisga, Björn Gmeiner, Markus Huber, Lorenz John, Marcus Mohr, Ulrich Rüde, Holger Stengel, Christian Waluga, Jens Weismüller, Gerhard Wellein, Markus Wittmann, Barbara I. Wohlmuth

Proceedings of the Software for Exascale Computing - SPPEXA 2013-2015, 2016

Hardware-effiziente, hochparallele Implementierungen von Lattice-Boltzmann-Verfahren für komplexe Geometrien.

Markus Wittmann

PhD thesis, 2016

A two-scale approach for efficient on-the-fly operator assembly in massively parallel high performance multigrid codes.

Simon Bauer, Marcus Mohr, Ulrich Rüde, Jens Weismüller, Markus Wittmann, Barbara I. Wohlmuth

CoRR, 2016

Chip-level and multi-node analysis of energy-optimized lattice Boltzmann CFD simulations.

Markus Wittmann, Georg Hager, Thomas Zeiser, Jan Treibig, Gerhard Wellein

Concurr. Comput. Pract. Exp., 2016

2015

Short Note on Costs of Floating Point Operations on current x86-64 Architectures: Denormals, Overflow, Underflow, and Division by Zero.

Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

CoRR, 2015

Extreme Scale-out SuperMUC Phase 2 - lessons learned.

Nicolay Hammer, Ferdinand Jamitzky, Helmut Satzger, Momme Allalen, Alexander Block, Anupam Karmakar, Matthias Brehm, Reinhold Bader, Luigi Iapichino, Antonio Ragagnin, Vasilios Karakasis, Dieter Kranzlmüller, Arndt Bode, Herbert Huber, Martin Kühn, Rui Machado, Daniel Grünewald, Philipp V. F. Edelmann, Friedrich K. Röpke, Markus Wittmann, Thomas Zeiser, Gerhard Wellein, Gerald Mathias, Magnus Schwörer, Konstantin Lorenzen, Christoph Federrath, Ralf Klessen, Karl-Ulrich Bamberg, Hartmut Ruhl, Florian Schornbaum, Martin Bauer, Anand Nikhil, Jiaxing Qi, Harald Klimach, Hinnerk Stüben, Abhishek Deshmukh, Tobias Falkenstein, Klaus Dolag, Margarita Petkova

Proceedings of the Parallel Computing: On the Road to Exascale, 2015

2014

Modeling and analyzing performance for highly optimized propagation steps of the lattice Boltzmann method on sparse lattices.

Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

CoRR, 2014

Defmacro for C: Lightweight, Ad Hoc Code Generation.

Kai Selgrad, Alexander Lier, Markus Wittmann, Daniel Lohmann, Marc Stamminger

Proceedings of ELS 2014 - 7th European Lisp Symposium, Paris, France, May 5-6, 2014., 2014

2013

A Survey of Checkpoint/Restart Techniques on Distributed Memory Systems.

Faisal Shahzad, Markus Wittmann, Moritz Kreutzer, Thomas Zeiser, Georg Hager, Gerhard Wellein

Parallel Process. Lett., 2013

An analysis of energy-optimized lattice-Boltzmann CFD simulations from the chip to the highly parallel level

Markus Wittmann, Georg Hager, Thomas Zeiser, Gerhard Wellein

CoRR, 2013

Asynchronous MPI for the Masses

Markus Wittmann, Georg Hager, Thomas Zeiser, Gerhard Wellein

CoRR, 2013

Comparison of different propagation steps for lattice Boltzmann methods.

Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

Comput. Math. Appl., 2013

An Evaluation of Different I/O Techniques for Checkpoint/Restart.

Faisal Shahzad, Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

Proceedings of the 2013 IEEE International Symposium on Parallel & Distributed Processing, 2013

2012

Asynchronous Checkpointing by Dedicated Checkpoint Threads.

Faisal Shahzad, Markus Wittmann, Thomas Zeiser, Gerhard Wellein

Proceedings of the Recent Advances in the Message Passing Interface, 2012

2011

Domain decomposition and locality optimization for large-scale lattice Boltzmann simulations

Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

CoRR, 2011

Comparison of different Propagation Steps for the Lattice Boltzmann Method

Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein

CoRR, 2011

Optimizing ccNUMA locality for task-parallel execution under OpenMP and TBB on multicore-based systems

Markus Wittmann, Georg Hager

CoRR, 2011

2010

Leveraging Shared Caches for Parallel Temporal Blocking of Stencil Codes on Multicore Processors and Clusters.

Markus Wittmann, Georg Hager, Jan Treibig, Gerhard Wellein

Parallel Process. Lett., 2010

Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory.

Markus Wittmann, Georg Hager, Gerhard Wellein

Proceedings of the 24th IEEE International Symposium on Parallel and Distributed Processing, 2010

2009

A Proof of Concept for Optimizing Task Parallelism by Locality Queues

Markus Wittmann, Georg Hager

CoRR, 2009

Efficient Temporal Blocking for Stencil Computations by Multicore-Aware Wavefront Parallelization.

Gerhard Wellein, Georg Hager, Thomas Zeiser, Markus Wittmann, Holger Fehske

Proceedings of the 33rd Annual IEEE International Computer Software and Applications Conference, 2009