Markus Wittmann

28 papers C 2Journal 18Unranked 5
YearRankTypeTitle / Venue / Authors
2021 J jnl
Energy efficiency of nonlinear domain decomposition methods.
Int. J. High Perform. Comput. Appl.
Axel Klawonn, Martin Lanser, Oliver Rheinbach, Gerhard Wellein, Markus Wittmann
2020 — ch.
EXASTEEL: Towards a Virtual Laboratory for the Multiscale Simulation of Dual-Phase Steel Using High-Performance Computing.
Software for Exascale 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
2018 C conf
Multicore Performance Engineering of Sparse Triangular Solves Using a Modified Roofline Model.
SBAC-PAD
Markus Wittmann, Georg Hager, Radim Janalík, Martin Lanser, Axel Klawonn, Oliver Rheinbach, Olaf Schenk, Gerhard Wellein
2017 J jnl
Lattice Boltzmann Benchmark Kernels as a Testbed for Performance Analysis.
CoRR
Markus Wittmann, Viktor Haag, Thomas Zeiser, Harald Köstler, Gerhard Wellein
2016 J jnl
A two-scale approach for efficient on-the-fly operator assembly in massively parallel high performance multigrid codes.
CoRR
Simon Bauer, Marcus Mohr, Ulrich Rüde, Jens Weismüller, Markus Wittmann, Barbara I. Wohlmuth
2016 J jnl
Chip-level and multi-node analysis of energy-optimized lattice Boltzmann CFD simulations.
Concurr. Comput. Pract. Exp.
Markus Wittmann, Georg Hager, Thomas Zeiser, Jan Treibig, Gerhard Wellein
2016 J jnl
Extreme Scale-out SuperMUC Phase 2 - lessons learned.
CoRR
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
2016 — —
Hardware-effiziente, hochparallele Implementierungen von Lattice-Boltzmann-Verfahren für komplexe Geometrien.
Markus Wittmann
2016 — ch.
Hybrid Parallel Multigrid Methods for Geodynamical Simulations.
Software for Exascale Computing
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
2015 — conf
Extreme Scale-out SuperMUC Phase 2 - lessons learned.
PARCO
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
2015 J jnl
Short Note on Costs of Floating Point Operations on current x86-64 Architectures: Denormals, Overflow, Underflow, and Division by Zero.
CoRR
Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2014 — conf
Defmacro for C: Lightweight, Ad Hoc Code Generation.
ELS
Kai Selgrad, Alexander Lier, Markus Wittmann, Daniel Lohmann, Marc Stamminger
2014 J jnl
Modeling and analyzing performance for highly optimized propagation steps of the lattice Boltzmann method on sparse lattices.
CoRR
Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2013 J jnl
A Survey of Checkpoint/Restart Techniques on Distributed Memory Systems.
Parallel Process. Lett.
Faisal Shahzad, Markus Wittmann, Moritz Kreutzer, Thomas Zeiser, Georg Hager, Gerhard Wellein
2013 — conf
An Evaluation of Different I/O Techniques for Checkpoint/Restart.
IPDPS Workshops
Faisal Shahzad, Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2013 J jnl
An analysis of energy-optimized lattice-Boltzmann CFD simulations from the chip to the highly parallel level
CoRR
Markus Wittmann, Georg Hager, Thomas Zeiser, Gerhard Wellein
2013 J jnl
Asynchronous MPI for the Masses
CoRR
Markus Wittmann, Georg Hager, Thomas Zeiser, Gerhard Wellein
2013 J jnl
Comparison of different propagation steps for lattice Boltzmann methods.
Comput. Math. Appl.
Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2012 C conf
Asynchronous Checkpointing by Dedicated Checkpoint Threads.
EuroMPI
Faisal Shahzad, Markus Wittmann, Thomas Zeiser, Gerhard Wellein
2011 J jnl
Comparison of different Propagation Steps for the Lattice Boltzmann Method
CoRR
Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2011 J jnl
Domain decomposition and locality optimization for large-scale lattice Boltzmann simulations
CoRR
Markus Wittmann, Thomas Zeiser, Georg Hager, Gerhard Wellein
2011 J jnl
Optimizing ccNUMA locality for task-parallel execution under OpenMP and TBB on multicore-based systems
CoRR
Markus Wittmann, Georg Hager
2010 J jnl
Leveraging Shared Caches for Parallel Temporal Blocking of Stencil Codes on Multicore Processors and Clusters.
Parallel Process. Lett.
Markus Wittmann, Georg Hager, Jan Treibig, Gerhard Wellein
2010 J jnl
Leveraging shared caches for parallel temporal blocking of stencil codes on multicore processors and clusters
CoRR
Markus Wittmann, Georg Hager, Jan Treibig, Gerhard Wellein
2010 — conf
Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory.
IPDPS Workshops
Markus Wittmann, Georg Hager, Gerhard Wellein
2009 J jnl
A Proof of Concept for Optimizing Task Parallelism by Locality Queues
CoRR
Markus Wittmann, Georg Hager
2009 — conf
Efficient Temporal Blocking for Stencil Computations by Multicore-Aware Wavefront Parallelization.
COMPSAC (1)
Gerhard Wellein, Georg Hager, Thomas Zeiser, Markus Wittmann, Holger Fehske
2009 J jnl
Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory
CoRR
Markus Wittmann, Georg Hager, Gerhard Wellein