Gerhard Wellein

191 papers A 9C 12Misc 2Journal 130Unranked 31

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	AI Application Benchmarking: Power-Aware Performance Analysis for Vision and Language Models. CoRR Martin Mayr, Sebastian Wind, Lukas Schröder, Georg Hager, Harald Köstler, Gerhard Wellein
2026	J	`jnl`	Analytic roofline modeling and energy analysis of the LULESH proxy application on multi-core clusters. Int. J. High Perform. Comput. Appl. Ayesha Afzal, Georg Hager, Gerhard Wellein
2026	J	`jnl`	Exploring metrics for analyzing dynamic behavior in MPI programs via a coupled-oscillator model. Parallel Comput. Ayesha Afzal, Georg Hager, Gerhard Wellein
2026	J	`jnl`	Microarchitectural comparison, in-core modeling, and memory hierarchy analysis of state-of-the-art CPUs: Grace, Sapphire Rapids, and Genoa. Parallel Comput. Jan Laukemann, Georg Hager, Gerhard Wellein
2026	—	`conf`	On the Challenges of Energy-Efficiency Analysis in HPC Systems: Evaluating Synthetic Benchmarks and Gromacs. SCA/HPC Asia Workshops Rafael Ravedutti Lucio Machado, Jan Eitzinger, Georg Hager, Gerhard Wellein
2026	J	`jnl`	SteuerLLM: Local specialized large language model for German tax law analysis. CoRR Sebastian Wind, Jeta Sopa, Laurin Schmid, Quirin Jackl, Sebastian Kiefer, Fei Wu, Martin Mayr, Harald Köstler, Gerhard Wellein, Andreas Maier, Soroosh Tayebi Arasteh
2025	J	`jnl`	Agentic large language models improve retrieval-based radiology question answering. CoRR Sebastian Wind, Jeta Sopa, Daniel Truhn, Mahshad Lotfinia, Tri-Thien Nguyen, Keno K. Bressem, Lisa Adams, Mirabela Rusu, Harald Köstler, Gerhard Wellein, Andreas K. Maier, Soroosh Tayebi Arasteh
2025	J	`jnl`	Algebraic temporal blocking for sparse iterative solvers on multi-core CPUs. Int. J. High Perform. Comput. Appl. Christie L. Alappat, Jonas Thies, Georg Hager, Holger Fehske, Gerhard Wellein
2025	J	`jnl`	Cache blocking of distributed-memory parallel matrix power kernels. Int. J. High Perform. Comput. Appl. Dane C. Lacey, Christie L. Alappat, Florian Lange, Georg Hager, Holger Fehske, Gerhard Wellein
2025	J	`jnl`	Exploring metrics for analyzing dynamic behavior in MPI programs via a coupled-oscillator model. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2025	J	`jnl`	GROMACS Unplugged: How Power Capping and Frequency Shapes Performance on GPUs. CoRR Ayesha Afzal, Anna Kahler, Georg Hager, Gerhard Wellein
2025	J	`jnl`	Multi-step retrieval and reasoning improves radiology question answering with large language models. npj Digit. Medicine Sebastian Wind, Jeta Sopa, Daniel Truhn, Mahshad Lotfinia, Tri-Thien Nguyen, Keno K. Bressem, Lisa Adams, Mirabela Rusu, Harald Köstler, Gerhard Wellein, Andreas K. Maier, Soroosh Tayebi Arasteh
2025	J	`jnl`	On the Challenges of Energy-Efficiency Analysis in HPC Systems: Evaluating Synthetic Benchmarks and Gromacs. CoRR Rafael Ravedutti Lucio Machado, Jan Eitzinger, Georg Hager, Gerhard Wellein
2024	A	`conf`	Alya towards Exascale: Optimal OpenACC Performance of the Navier-Stokes Finite Element Assembly on GPUs. IPDPS Herbert Owen, Dominik Ernst, Thomas Gruber, Oriol Lehmkuhl, Guillaume Houzeaux, Lucas Gasparino, Gerhard Wellein
2024	J	`jnl`	Alya towards Exascale: Optimal OpenACC Performance of the Navier-Stokes Finite Element Assembly on GPUs. CoRR Herbert Owen, Dominik Ernst, Thomas Gruber, Oriol Lehmkuhl, Guillaume Houzeaux, Lucas Gasparino, Gerhard Wellein
2024	J	`jnl`	Analytic Roofline Modeling and Energy Analysis of LULESH Proxy Application on Multi-Core Clusters. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2024	J	`jnl`	Cache Blocking of Distributed-Memory Parallel Matrix Power Kernels. CoRR Dane C. Lacey, Christie L. Alappat, Florian Lange, Georg Hager, Holger Fehske, Gerhard Wellein
2024	A	`conf`	CloverLeaf on Intel Multi-Core CPUs: A Case Study in Write-Allocate Evasion. IPDPS Jan Laukemann, Thomas Gruber, Georg Hager, Dossay Oryspayev, Gerhard Wellein
2024	—	`conf`	Microarchitectural comparison and in-core modeling of state-of-the-art CPUs: Grace, Sapphire Rapids, and Genoa. SC Workshops Jan Laukemann, Georg Hager, Gerhard Wellein
2024	J	`jnl`	Microarchitectural comparison and in-core modeling of state-of-the-art CPUs: Grace, Sapphire Rapids, and Genoa. CoRR Jan Laukemann, Georg Hager, Gerhard Wellein
2023	J	`jnl`	Algebraic Temporal Blocking for Sparse Iterative Solvers on Multi-Core CPUs. CoRR Christie L. Alappat, Jonas Thies, Georg Hager, Holger Fehske, Gerhard Wellein
2023	J	`jnl`	Analytical performance estimation during code generation on modern GPUs. J. Parallel Distributed Comput. Dominik Ernst, Markus Holzer, Georg Hager, Matthias Knorr, Gerhard Wellein
2023	J	`jnl`	CloverLeaf on Intel Multi-Core CPUs: A Case Study in Write-Allocate Evasion. CoRR Jan Laukemann, Thomas Gruber, Georg Hager, Dossay Oryspayev, Gerhard Wellein
2023	J	`jnl`	Level-Based Blocking for Sparse Matrices: Sparse Matrix-Power-Vector Multiplication. IEEE Trans. Parallel Distributed Syst. Christie L. Alappat, Georg Hager, Olaf Schenk, Gerhard Wellein
2023	J	`jnl`	MD-Bench: A performance-focused prototyping harness for state-of-the-art short-range molecular dynamics algorithms. Future Gener. Comput. Syst. Rafael Ravedutti Lucio Machado, Jan Eitzinger, Jan Laukemann, Georg Hager, Harald Köstler, Gerhard Wellein
2023	J	`jnl`	MD-Bench: Engineering the in-core performance of short-range molecular dynamics kernels from state-of-the-art simulation packages. CoRR Rafael Ravedutti Lucio Machado, Jan Eitzinger, Jan Laukemann, Georg Hager, Harald Köstler, Gerhard Wellein
2023	J	`jnl`	Making Applications Faster by Asynchronous Execution: Slowing Down Processes or Relaxing MPI Collectives. CoRR Ayesha Afzal, Georg Hager, Stefano Markidis, Gerhard Wellein
2023	J	`jnl`	Making applications faster by asynchronous execution: Slowing down processes or relaxing MPI collectives. Future Gener. Comput. Syst. Ayesha Afzal, Georg Hager, Stefano Markidis, Gerhard Wellein
2023	—	`conf`	Physical Oscillator Model for Supercomputing. SC Workshops Ayesha Afzal, Georg Hager, Gerhard Wellein
2023	J	`jnl`	Physical Oscillator Model for Supercomputing. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2023	—	`conf`	SPEChpc 2021 Benchmarks on Ice Lake and Sapphire Rapids Infiniband Clusters: A Performance and Energy Case Study. SC Workshops Ayesha Afzal, Georg Hager, Gerhard Wellein
2023	J	`jnl`	SPEChpc 2021 Benchmarks on Ice Lake and Sapphire Rapids Infiniband Clusters: A Performance and Energy Case Study. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2023	J	`jnl`	The Role of Idle Waves, Desynchronization, and Bottleneck Evasion in the Performance of Parallel Programs. IEEE Trans. Parallel Distributed Syst. Ayesha Afzal, Georg Hager, Gerhard Wellein
2022	—	`conf`	Addressing White-box Modeling and Simulation Challenges in Parallel Computing. SIGSIM-PADS Ayesha Afzal, Gerhard Wellein, Georg Hager
2022	J	`jnl`	Analytic performance model for parallel overlapping memory-bound kernels. Concurr. Comput. Pract. Exp. Ayesha Afzal, Georg Hager, Gerhard Wellein
2022	J	`jnl`	Analytical Performance Estimation during Code Generation on Modern GPUs. CoRR Dominik Ernst, Markus Holzer, Georg Hager, Matthias Knorr, Gerhard Wellein
2022	J	`jnl`	Execution-Cache-Memory modeling and performance tuning of sparse matrix-vector multiplication and Lattice quantum chromodynamics on A64FX. Concurr. Comput. Pract. Exp. Christie L. Alappat, Nils Meyer, Jan Laukemann, Thomas Gruber, Georg Hager, Gerhard Wellein, Tilo Wettig
2022	—	`conf`	Exploring Techniques for the Analysis of Spontaneous Asynchronicity in MPI-Parallel Applications. PPAM (1) Ayesha Afzal, Georg Hager, Gerhard Wellein, Stefano Markidis
2022	J	`jnl`	Exploring Techniques for the Analysis of Spontaneous Asynchronicity in MPI-Parallel Applications. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein, Stefano Markidis
2022	J	`jnl`	Level-based Blocking for Sparse Matrices: Sparse Matrix-Power-Vector Multiplication. CoRR Christie L. Alappat, Georg Hager, Olaf Schenk, Gerhard Wellein
2022	—	`conf`	MD-Bench: A Generic Proxy-App Toolbox for State-of-the-Art Molecular Dynamics Algorithms. PPAM (1) Rafael Ravedutti Lucio Machado, Jan Eitzinger, Harald Köstler, Gerhard Wellein
2022	J	`jnl`	MD-Bench: A generic proxy-app toolbox for state-of-the-art molecular dynamics algorithms. CoRR Rafael Ravedutti Lucio Machado, Jan Eitzinger, Harald Köstler, Gerhard Wellein
2022	J	`jnl`	Multiway p-spectral graph cuts on Grassmann manifolds. Mach. Learn. Dimosthenis Pasadakis, Christie Louis Alappat, Olaf Schenk, Gerhard Wellein
2022	J	`jnl`	The Role of Idle Waves, Desynchronization, and Bottleneck Evasion in the Performance of Parallel Programs. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2021	C	`conf`	Analytic Modeling of Idle Waves in Parallel Programs: Communication, Cluster Topology, and Noise Impact. ISC Ayesha Afzal, Georg Hager, Gerhard Wellein
2021	J	`jnl`	Analytic Modeling of Idle Waves in Parallel Programs: Communication, Cluster Topology, and Noise Impact. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2021	J	`jnl`	ECM modeling and performance tuning of SpMV and Lattice QCD on A64FX. CoRR Christie L. Alappat, Nils Meyer, Jan Laukemann, Thomas Gruber, Georg Hager, Gerhard Wellein, Tilo Wettig
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
2021	C	`conf`	Opening the Black Box: Performance Estimation during Code Generation for GPUs. SBAC-PAD Dominik Ernst, Georg Hager, Matthias Knorr, Gerhard Wellein, Markus Holzer
2021	J	`jnl`	Opening the Black Box: Performance Estimation during Code Generation for GPUs. CoRR Dominik Ernst, Georg Hager, Markus Holzer, Matthias Knorr, Gerhard Wellein
2021	J	`jnl`	Performance engineering for real and complex tall & skinny matrix multiplication kernels on GPUs. Int. J. High Perform. Comput. Appl. Dominik Ernst, Georg Hager, Jonas Thies, Gerhard Wellein
2021	A	`conf`	YaskSite: Stencil Optimization Techniques Applied to Explicit ODE Methods on Modern Architectures. CGO Christie L. Alappat, Johannes Seiferth, Georg Hager, Matthias Korch, Thomas Rauber, Gerhard Wellein
2020	J	`jnl`	A Recursive Algebraic Coloring Technique for Hardware-efficient Symmetric Sparse Matrix-vector Multiplication. ACM Trans. Parallel Comput. Christie L. Alappat, Achim Basermann, Alan R. Bishop, Holger Fehske, Georg Hager, Olaf Schenk, Jonas Thies, Gerhard Wellein
2020	J	`jnl`	An analytic performance model for overlapping execution of memory-bound loop kernels on multicore CPUs. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2020	J	`jnl`	Analytic performance modeling and analysis of detailed neuron simulations. Int. J. High Perform. Comput. Appl. Francesco Cremonesi, Georg Hager, Gerhard Wellein, Felix Schürmann
2020	J	`jnl`	Bridging the Architecture Gap: Abstracting Performance-Relevant Properties of Modern Server Processors. Supercomput. Front. Innov. Johannes Hofmann, Christie L. Alappat, Georg Hager, Dietmar Fey, Gerhard Wellein
2020	C	`conf`	Desynchronization and Wave Pattern Formation in MPI-Parallel and Hybrid Memory-Bound Programs. ISC Ayesha Afzal, Georg Hager, Gerhard Wellein
2020	J	`jnl`	Desynchronization and Wave Pattern Formation in MPI-Parallel and Hybrid Memory-Bound Programs. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2020	—	`ch.`	ESSEX: Equipping Sparse Solvers For Exascale. Software for Exascale Computing Christie L. Alappat, Andreas Alvermann, Achim Basermann, Holger Fehske, Yasunori Futamura, Martin Galgon, Georg Hager, Sarah Huber, Akira Imakura, Masatoshi Kawai, Moritz Kreutzer, Bruno Lang, Kengo Nakajima, Melven Röhrig-Zöllner, Tetsuya Sakurai, Faisal Shahzad, Jonas Thies, Gerhard Wellein
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
2020	J	`jnl`	K-way p-spectral clustering on Grassmann manifolds. CoRR Dimosthenis Pasadakis, Christie Louis Alappat, Olaf Schenk, Gerhard Wellein
2020	J	`jnl`	PHIST: A Pipelined, Hybrid-Parallel Iterative Solver Toolkit. ACM Trans. Math. Softw. Jonas Thies, Melven Röhrig-Zöllner, Nigel Overmars, Achim Basermann, Dominik Ernst, Georg Hager, Gerhard Wellein
2020	—	`conf`	Performance Modeling of Streaming Kernels and Sparse Matrix-Vector Multiplication on A64FX. PMBS@SC Christie L. Alappat, Jan Laukemann, Thomas Gruber, Georg Hager, Gerhard Wellein, Nils Meyer, Tilo Wettig
2020	J	`jnl`	Performance Modeling of Streaming Kernels and Sparse Matrix-Vector Multiplication on A64FX. CoRR Christie L. Alappat, Jan Laukemann, Thomas Gruber, Georg Hager, Gerhard Wellein, Nils Meyer, Tilo Wettig
2020	C	`conf`	Understanding HPC Benchmark Performance on Intel Broadwell and Cascade Lake Processors. ISC Christie L. Alappat, Johannes Hofmann, Georg Hager, Holger Fehske, Alan R. Bishop, Gerhard Wellein
2020	J	`jnl`	Understanding HPC Benchmark Performance on Intel Broadwell and Cascade Lake Processors. CoRR Christie L. Alappat, Johannes Hofmann, Georg Hager, Holger Fehske, Alan R. Bishop, Gerhard Wellein
2019	J	`jnl`	A Recursive Algebraic Coloring Technique for Hardware-Efficient Symmetric Sparse Matrix-Vector Multiplication. CoRR Christie L. Alappat, Georg Hager, Olaf Schenk, Jonas Thies, Achim Basermann, Alan R. Bishop, Holger Fehske, Gerhard Wellein
2019	J	`jnl`	Analytic Performance Modeling and Analysis of Detailed Neuron Simulations. CoRR Francesco Cremonesi, Georg Hager, Gerhard Wellein, Felix Schürmann
2019	—	`conf`	Automatic Throughput and Critical Path Analysis of x86 and ARM Assembly Kernels. PMBS@SC Jan Laukemann, Julian Hammer, Georg Hager, Gerhard Wellein
2019	J	`jnl`	Automatic Throughput and Critical Path Analysis of x86 and ARM Assembly Kernels. CoRR Jan Laukemann, Julian Hammer, Georg Hager, Gerhard Wellein
2019	J	`jnl`	Bridging the Architecture Gap: Abstracting Performance-Relevant Properties of Modern Server Processors. CoRR Johannes Hofmann, Christie L. Alappat, Georg Hager, Dietmar Fey, Gerhard Wellein
2019	J	`jnl`	CRAFT: A Library for Easier Application-Level Checkpoint/Restart and Automatic Fault Tolerance. IEEE Trans. Parallel Distributed Syst. Faisal Shahzad, Jonas Thies, Moritz Kreutzer, Thomas Zeiser, Georg Hager, Gerhard Wellein
2019	C	`conf`	ClusterCockpit - A web application for job-specific performance monitoring. CLUSTER Jan Eitzinger, Thomas Gruber, Ayesha Afzal, Thomas Zeiser, Gerhard Wellein
2019	A	`conf`	Code generation for massively parallel phase-field simulations. SC Martin Bauer, Johannes Hötzer, Dominik Ernst, Julian Hammer, Marco Seiz, Henrik Hierl, Jan Hönig, Harald Köstler, Gerhard Wellein, Britta Nestler, Ulrich Rüde
2019	J	`jnl`	Collecting and Presenting Reproducible Intranode Stencil Performance: INSPECT. CoRR Julian Hornich, Julian Hammer, Georg Hager, Thomas Gruber, Gerhard Wellein
2019	J	`jnl`	Collecting and Presenting Reproducible Intranode Stencil Performance: INSPECT. Supercomput. Front. Innov. Julian Hornich, Julian Hammer, Georg Hager, Thomas Gruber, Gerhard Wellein
2019	J	`jnl`	Delay Propagation and Overlapping Mechanisms on Clusters: A Case Study of Idle Periods based on Workload, Communication, and Delay Granularity. CoRR Ayesha Afzal, Georg Hager, Gerhard Wellein
2019	J	`jnl`	Performance Engineering for a Tall & Skinny Matrix Multiplication Kernel on GPUs. CoRR Dominik Ernst, Georg Hager, Jonas Thies, Gerhard Wellein
2019	—	`conf`	Performance Engineering for a Tall & Skinny Matrix Multiplication Kernels on GPUs. PPAM (1) Dominik Ernst, Georg Hager, Jonas Thies, Gerhard Wellein
2019	C	`conf`	Propagation and Decay of Injected One-Off Delays on Clusters: A Case Study. CLUSTER Ayesha Afzal, Georg Hager, Gerhard Wellein
2018	—	`conf`	Automated Instruction Stream Throughput Prediction for Intel and AMD Microarchitectures. PMBS@SC Jan Laukemann, Julian Hammer, Johannes Hofmann, Georg Hager, Gerhard Wellein
2018	J	`jnl`	Automated Instruction Stream Throughput Prediction for Intel and AMD Microarchitectures. CoRR Jan Laukemann, Julian Hammer, Johannes Hofmann, Georg Hager, Gerhard Wellein
2018	J	`jnl`	Building and utilizing fault tolerance support tools for the GASPI applications. Int. J. High Perform. Comput. Appl. Faisal Shahzad, Moritz Kreutzer, Thomas Zeiser, Rui Machado, Andreas Pieper, Georg Hager, Gerhard Wellein
2018	C	`conf`	Chebyshev Filter Diagonalization on Modern Manycore Processors and GPGPUs. ISC Moritz Kreutzer, Dominik Ernst, Alan R. Bishop, Holger Fehske, Georg Hager, Kengo Nakajima, Gerhard Wellein
2018	J	`jnl`	Chebyshev Filter Diagonalization on Modern Manycore Processors and GPGPUs. CoRR Moritz Kreutzer, Georg Hager, Dominik Ernst, Holger Fehske, Alan R. Bishop, Gerhard Wellein
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
2018	J	`jnl`	Optimization and performance evaluation of the IDR iterative Krylov solver on GPUs. Int. J. High Perform. Comput. Appl. Hartwig Anzt, Moritz Kreutzer, Eduardo Ponce, Gregory D. Peterson, Gerhard Wellein, Jack J. Dongarra
2018	J	`jnl`	Performance Engineering. Inform. Spektrum Georg Hager, Gerhard Wellein
2017	C	`conf`	An Analysis of Core- and Chip-Level Architectural Features in Four Generations of Intel Server Processors. ISC Johannes Hofmann, Georg Hager, Gerhard Wellein, Dietmar Fey
2017	J	`jnl`	An analysis of core- and chip-level architectural features in four generations of Intel server processors. CoRR Johannes Hofmann, Georg Hager, Gerhard Wellein, Dietmar Fey
2017	J	`jnl`	CRAFT: A library for easier application-level Checkpoint/Restart and Automatic Fault Tolerance. CoRR Faisal Shahzad, Jonas Thies, Moritz Kreutzer, Thomas Zeiser, Georg Hager, Gerhard Wellein
2017	J	`jnl`	GHOST: Building Blocks for High Performance Sparse Linear Algebra on Heterogeneous Systems. Int. J. Parallel Program. Moritz Kreutzer, Jonas Thies, Melven Röhrig-Zöllner, Andreas Pieper, Faisal Shahzad, Martin Galgon, Achim Basermann, Holger Fehske, Georg Hager, Gerhard Wellein
2017	J	`jnl`	Kerncraft: A Tool for Analytic Performance Modeling of Loop Kernels. CoRR Julian Hammer, Jan Eitzinger, Georg Hager, Gerhard Wellein
2017	C	`conf`	LIKWID Monitoring Stack: A Flexible Framework Enabling Job Specific Performance monitoring for the masses. CLUSTER Thomas Röhl, Jan Eitzinger, Georg Hager, Gerhard Wellein
2017	J	`jnl`	LIKWID Monitoring Stack: A flexible framework enabling job specific performance monitoring for the masses. CoRR Thomas Röhl, Jan Eitzinger, Georg Hager, 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
2017	J	`jnl`	Performance analysis of the Kahan-enhanced scalar product on current multi-core and many-core processors. Concurr. Comput. Pract. Exp. Johannes Hofmann, Dietmar Fey, Michael Riedmann, Jan Eitzinger, Georg Hager, Gerhard Wellein
2017	J	`jnl`	Preconditioned Krylov solvers on GPUs. Parallel Comput. Hartwig Anzt, Mark Gates, Jack J. Dongarra, Moritz Kreutzer, Gerhard Wellein, Martin Koehler
2017	J	`jnl`	Validation of hardware events for successful performance pattern identification in High Performance Computing. CoRR Thomas Röhl, Jan Eitzinger, Georg Hager, Gerhard Wellein
2016	—	`conf`	Analysis of Intel's Haswell Microarchitecture Using the ECM Model and Microbenchmarks. ARCS Johannes Hofmann, Dietmar Fey, Jan Eitzinger, Georg Hager, Gerhard Wellein
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	—	`conf`	Efficiency of General Krylov Methods on GPUs - An Experimental Study. IPDPS Workshops Hartwig Anzt, Jack J. Dongarra, Moritz Kreutzer, Gerhard Wellein, Martin Koehler
2016	J	`jnl`	Exploring performance and power properties of modern multi-core chips via simple machine models. Concurr. Comput. Pract. Exp. Georg Hager, Jan Treibig, Johannes Habich, 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	J	`jnl`	High-performance implementation of Chebyshev filter diagonalization for interior eigenvalue computations. J. Comput. Phys. Andreas Pieper, Moritz Kreutzer, Andreas Alvermann, Martin Galgon, Holger Fehske, Georg Hager, Bruno Lang, Gerhard Wellein
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
2016	—	`ch.`	Performance Engineering and Energy Efficiency of Building Blocks for Large, Sparse Eigenvalue Computations on Heterogeneous Supercomputers. Software for Exascale Computing Moritz Kreutzer, Jonas Thies, Andreas Pieper, Andreas Alvermann, Martin Galgon, Melven Röhrig-Zöllner, Faisal Shahzad, Achim Basermann, Alan R. Bishop, Holger Fehske, Georg Hager, Bruno Lang, Gerhard Wellein
2016	J	`jnl`	Performance analysis of the Kahan-enhanced scalar product on current multi- and manycore processors. CoRR Johannes Hofmann, Dietmar Fey, Michael Riedmann, Jan Eitzinger, Georg Hager, Gerhard Wellein
2016	J	`jnl`	Performance and power for highly parallel systems. Concurr. Comput. Pract. Exp. Georg Hager, Darren J. Kerbyson, Abhinav Vishnu, Gerhard Wellein
2016	—	`ch.`	Towards an Exascale Enabled Sparse Solver Repository. Software for Exascale Computing Jonas Thies, Martin Galgon, Faisal Shahzad, Andreas Alvermann, Moritz Kreutzer, Andreas Pieper, Melven Röhrig-Zöllner, Achim Basermann, Holger Fehske, Georg Hager, Bruno Lang, Gerhard Wellein
2015	J	`jnl`	Analysis of Intel's Haswell Microarchitecture Using The ECM Model and Microbenchmarks. CoRR Johannes Hofmann, Dietmar Fey, Jan Eitzinger, Georg Hager, Gerhard Wellein
2015	J	`jnl`	Automatic Loop Kernel Analysis and Performance Modeling With Kerncraft. CoRR Julian Hammer, Georg Hager, Jan Eitzinger, Gerhard Wellein
2015	—	`conf`	Automatic loop kernel analysis and performance modeling with Kerncraft. PMBS@SC Julian Hammer, Georg Hager, Jan Eitzinger, Gerhard Wellein
2015	C	`conf`	Building a Fault Tolerant Application Using the GASPI Communication Layer. CLUSTER Faisal Shahzad, Moritz Kreutzer, Thomas Zeiser, Rui Machado, Andreas Pieper, Georg Hager, Gerhard Wellein
2015	J	`jnl`	Building a fault tolerant application using the GASPI communication layer. CoRR Faisal Shahzad, Moritz Kreutzer, Thomas Zeiser, Rui Machado, Andreas Pieper, Georg Hager, Gerhard Wellein
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`	GHOST: Building blocks for high performance sparse linear algebra on heterogeneous systems. CoRR Moritz Kreutzer, Jonas Thies, Melven Röhrig-Zöllner, Andreas Pieper, Faisal Shahzad, Martin Galgon, Achim Basermann, Holger Fehske, Georg Hager, Gerhard Wellein
2015	J	`jnl`	High-performance implementation of Chebyshev filter diagonalization for interior eigenvalue computations. CoRR Andreas Pieper, Moritz Kreutzer, Martin Galgon, Andreas Alvermann, Holger Fehske, Georg Hager, Bruno Lang, Gerhard Wellein
2015	J	`jnl`	Increasing the Performance of the Jacobi-Davidson Method by Blocking. SIAM J. Sci. Comput. Melven Röhrig-Zöllner, Jonas Thies, Moritz Kreutzer, Andreas Alvermann, Andreas Pieper, Achim Basermann, Georg Hager, Gerhard Wellein, Holger Fehske
2015	J	`jnl`	Multicore-Optimized Wavefront Diamond Blocking for Optimizing Stencil Updates. SIAM J. Sci. Comput. Tareq M. Malas, Georg Hager, Hatem Ltaief, Holger Stengel, Gerhard Wellein, David E. Keyes
2015	—	`conf`	Performance Analysis of the Kahan-Enhanced Scalar Product on Current Multicore Processors. PPAM (1) Johannes Hofmann, Dietmar Fey, Michael Riedmann, Jan Eitzinger, Georg Hager, Gerhard Wellein
2015	A	`conf`	Performance Engineering of the Kernel Polynomal Method on Large-Scale CPU-GPU Systems. IPDPS Moritz Kreutzer, Andreas Pieper, Georg Hager, Gerhard Wellein, Andreas Alvermann, Holger Fehske
2015	J	`jnl`	Performance analysis of the Kahan-enhanced scalar product on current multicore processors. CoRR Johannes Hofmann, Dietmar Fey, Jan Eitzinger, Georg Hager, Gerhard Wellein
2015	A	`conf`	Quantifying Performance Bottlenecks of Stencil Computations Using the Execution-Cache-Memory Model. ICS Holger Stengel, Jan Treibig, Georg Hager, Gerhard Wellein
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	J	`jnl`	A Unified Sparse Matrix Data Format for Efficient General Sparse Matrix-Vector Multiplication on Modern Processors with Wide SIMD Units. SIAM J. Sci. Comput. Moritz Kreutzer, Georg Hager, Gerhard Wellein, Holger Fehske, Alan R. Bishop
2014	J	`jnl`	Comparing the Performance of Different x86 SIMD Instruction Sets for a Medical Imaging Application on Modern Multi- and Manycore Chips. CoRR Johannes Hofmann, Jan Treibig, Georg Hager, Gerhard Wellein
2014	—	`conf`	Comparing the performance of different x86 SIMD instruction sets for a medical imaging application on modern multi- and manycore chips. WPMVP@PPoPP Johannes Hofmann, Jan Treibig, Georg Hager, Gerhard Wellein
2014	—	`conf`	ESSEX: Equipping Sparse Solvers for Exascale. Euro-Par Workshops (2) Andreas Alvermann, Achim Basermann, Holger Fehske, Martin Galgon, Georg Hager, Moritz Kreutzer, Lukas Krämer, Bruno Lang, Andreas Pieper, Melven Röhrig-Zöllner, Faisal Shahzad, Jonas Thies, Gerhard Wellein
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
2014	J	`jnl`	Multicore-optimized wavefront diamond blocking for optimizing stencil updates. CoRR Tareq M. Malas, Georg Hager, Hatem Ltaief, Holger Stengel, Gerhard Wellein, David E. Keyes
2014	—	`conf`	Overhead Analysis of Performance Counter Measurements. ICPP Workshops Thomas Roehl, Jan Treibig, Georg Hager, Gerhard Wellein
2014	—	`conf`	Performance Engineering for a Medical Imaging Application on the Intel Xeon Phi Accelerator. ARCS Workshops Johannes Hofmann, Jan Treibig, Georg Hager, Gerhard Wellein
2014	J	`jnl`	Performance Engineering for a Medical Imaging Application on the Intel Xeon Phi Accelerator. CoRR Johannes Hofmann, Jan Treibig, Georg Hager, Gerhard Wellein
2014	J	`jnl`	Performance Engineering of the Kernel Polynomial Method on Large-Scale CPU-GPU Systems. CoRR Moritz Kreutzer, Georg Hager, Gerhard Wellein, Andreas Pieper, Andreas Alvermann, Holger Fehske
2014	J	`jnl`	Quantifying performance bottlenecks of stencil computations using the Execution-Cache-Memory model. CoRR Holger Stengel, Jan Treibig, 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	J	`jnl`	A unified sparse matrix data format for modern processors with wide SIMD units. CoRR Moritz Kreutzer, Georg Hager, Gerhard Wellein, Holger Fehske, Alan R. Bishop
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
2013	J	`jnl`	Optimization of FASTEST-3D for Modern Multicore Systems CoRR Christoph Scheit, Georg Hager, Jan Treibig, Stefan Becker, Gerhard Wellein
2013	J	`jnl`	Pushing the limits for medical image reconstruction on recent standard multicore processors. Int. J. High Perform. Comput. Appl. Jan Treibig, Georg Hager, Hannes G. Hofmann, Joachim Hornegger, Gerhard Wellein
2012	C	`conf`	Asynchronous Checkpointing by Dedicated Checkpoint Threads. EuroMPI Faisal Shahzad, Markus Wittmann, Thomas Zeiser, Gerhard Wellein
2012	J	`jnl`	Best practices for HPM-assisted performance engineering on modern multicore processors CoRR Jan Treibig, Georg Hager, Gerhard Wellein
2012	J	`jnl`	Exploring performance and power properties of modern multicore chips via simple machine models CoRR Georg Hager, Jan Treibig, Johannes Habich, Gerhard Wellein
2012	—	`conf`	Performance Patterns and Hardware Metrics on Modern Multicore Processors: Best Practices for Performance Engineering. Euro-Par Workshops Jan Treibig, Georg Hager, Gerhard Wellein
2012	—	`conf`	Sparse Matrix-vector Multiplication on GPGPU Clusters: A New Storage Format and a Scalable Implementation. IPDPS Workshops Moritz Kreutzer, Georg Hager, Gerhard Wellein, Holger Fehske, Achim Basermann, Alan R. Bishop
2011	J	`jnl`	A flexible Patch-based lattice Boltzmann parallelization approach for heterogeneous GPU-CPU clusters. Parallel Comput. Christian Feichtinger, Johannes Habich, Harald Köstler, Georg Hager, Ulrich Rüde, 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`	Efficient multicore-aware parallelization strategies for iterative stencil computations. J. Comput. Sci. Jan Treibig, Gerhard Wellein, Georg Hager
2011	J	`jnl`	Hybrid-Parallel Sparse Matrix-Vector Multiplication with Explicit Communication Overlap on Current Multicore-Based Systems. Parallel Process. Lett. Gerald Schubert, Holger Fehske, Georg Hager, Gerhard Wellein
2011	J	`jnl`	Hybrid-parallel sparse matrix-vector multiplication with explicit communication overlap on current multicore-based systems CoRR Gerald Schubert, Holger Fehske, Georg Hager, Gerhard Wellein
2011	—	`book`	Introduction to High Performance Computing for Scientists and Engineers. Georg Hager, Gerhard Wellein
2011	J	`jnl`	LIKWID: Lightweight Performance Tools CoRR Jan Treibig, Georg Hager, Gerhard Wellein
2011	—	`conf`	Parallel Sparse Matrix-Vector Multiplication as a Test Case for Hybrid MPI+OpenMP Programming. IPDPS Workshops Gerald Schubert, Georg Hager, Holger Fehske, Gerhard Wellein
2011	J	`jnl`	Parallel sparse matrix-vector multiplication as a test case for hybrid MPI+OpenMP programming CoRR Gerald Schubert, Georg Hager, Holger Fehske, Gerhard Wellein
2011	J	`jnl`	Performance analysis and optimization strategies for a D3Q19 lattice Boltzmann kernel on nVIDIA GPUs using CUDA. Adv. Eng. Softw. Johannes Habich, Thomas Zeiser, Georg Hager, Gerhard Wellein
2011	J	`jnl`	Performance engineering for the Lattice Boltzmann method on GPGPUs: Architectural requirements and performance results CoRR Johannes Habich, Christian Feichtinger, Harald Köstler, Georg Hager, Gerhard Wellein
2011	—	`conf`	Poster: LIKWID: lightweight performance tools. SC Companion Jan Treibig, Georg Hager, Gerhard Wellein, Michael Meier
2011	J	`jnl`	Pushing the limits for medical image reconstruction on recent standard multicore processors CoRR Jan Treibig, Georg Hager, Hannes G. Hofmann, Joachim Hornegger, Gerhard Wellein
2011	J	`jnl`	Simulation software for supercomputers. J. Comput. Sci. Michael Bader, Miriam Mehl, Ulrich Rüde, Gerhard Wellein
2011	J	`jnl`	Sparse matrix-vector multiplication on GPGPU clusters: A new storage format and a scalable implementation CoRR Moritz Kreutzer, Georg Hager, Gerhard Wellein, Holger Fehske, Achim Basermann, Alan R. Bishop
2011	—	`conf`	likwid-bench: An Extensible Microbenchmarking Platform for x86 Multicore Compute Nodes. Parallel Tools Workshop Jan Treibig, Georg Hager, Gerhard Wellein
2010	J	`jnl`	A Flexible Patch-Based Lattice Boltzmann Parallelization Approach for Heterogeneous GPU-CPU Clusters CoRR Christian Feichtinger, Johannes Habich, Harald Köstler, Georg Hager, Ulrich Rüde, Gerhard Wellein
2010	J	`jnl`	Efficient multicore-aware parallelization strategies for iterative stencil computations CoRR Jan Treibig, Gerhard Wellein, Georg Hager
2010	—	`conf`	LIKWID: A Lightweight Performance-Oriented Tool Suite for x86 Multicore Environments. ICPP Workshops Jan Treibig, Georg Hager, Gerhard Wellein
2010	J	`jnl`	LIKWID: A lightweight performance-oriented tool suite for x86 multicore environments CoRR Jan Treibig, Georg Hager, Gerhard Wellein
2010	—	`conf`	LIKWID: Lightweight Performance Tools. CHPC Jan Treibig, Georg Hager, Gerhard Wellein
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`	Benchmark Analysis and Application Results for Lattice Boltzmann Simulations on NEC SX Vector and Intel Nehalem Systems. Parallel Process. Lett. Thomas Zeiser, Georg Hager, Gerhard Wellein
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`	Multi-core architectures: Complexities of performance prediction and the impact of cache topology CoRR Jan Treibig, Georg Hager, Gerhard Wellein
2009	J	`jnl`	Multicore-aware parallel temporal blocking of stencil codes for shared and distributed memory CoRR Markus Wittmann, Georg Hager, Gerhard Wellein
2009	A	`conf`	The world's fastest CPU and SMP node: Some performance results from the NEC SX-9. IPDPS Thomas Zeiser, Georg Hager, Gerhard Wellein
2008	J	`jnl`	Data Access Characteristics and Optimizations for Sun UltraSPARC T2 and T2+ Systems. Parallel Process. Lett. Georg Hager, Thomas Zeiser, Gerhard Wellein
2008	A	`conf`	Data access optimizations for highly threaded multi-core CPUs with multiple memory controllers. IPDPS Georg Hager, Thomas Zeiser, Gerhard Wellein
2008	J	`jnl`	Performance comparison of different parallel lattice Boltzmann implementations on multi-core multi-socket systems. Int. J. Comput. Sci. Eng. Stefan Donath, Klaus Iglberger, Gerhard Wellein, Thomas Zeiser, Aditya Nitsure, Ulrich Rüde
2008	—	`ch.`	Vector Computers in a World of Commodity Clusters, Massively Parallel Systems and Many-Core Many-Threaded CPUs: Recent Experience Based on an Advanced Lattice Boltzmann Flow Solver. High Performance Computing in Science and Engineering Thomas Zeiser, Georg Hager, Gerhard Wellein
2007	J	`jnl`	Data access optimizations for highly threaded multi-core CPUs with multiple memory controllers CoRR Georg Hager, Thomas Zeiser, Gerhard Wellein
2007	J	`jnl`	Hierarchical hybrid grids: achieving TERAFLOP performance on large scale finite element simulations. Int. J. Parallel Emergent Distributed Syst. Benjamin Karl Bergen, Gerhard Wellein, Frank Hülsemann, Ulrich Rüde
2007	J	`jnl`	RZBENCH: Performance evaluation of current HPC architectures using low-level and application benchmarks CoRR Georg Hager, Holger Stengel, Thomas Zeiser, Gerhard Wellein
2004	A	`conf`	Performance Evaluation of Parallel Large-Scale Lattice Boltzmann Applications on Three Supercomputing Architectures. SC Thomas Pohl, Frank Deserno, Nils Thürey, Ulrich Rüde, Peter Lammers, Gerhard Wellein, Thomas Zeiser
2003	J	`jnl`	Communication and Optimization Aspects of Parallel Programming Models on Hybrid Architectures. Int. J. High Perform. Comput. Appl. Rolf Rabenseifner, Gerhard Wellein
2003	Misc	`conf`	Comparison of Parallel Programming Models on Clusters of SMP Nodes. HPSC Rolf Rabenseifner, Gerhard Wellein
2003	Misc	`conf`	Exact Numerical Treatment of Finite Quantum Systems Using Leading-Edge Supercomputers. HPSC Georg Hager, Eric Jeckelmann, Holger Fehske, Gerhard Wellein
2002	—	`conf`	Fast Sparse Matrix-Vector Multiplication for TeraFlop/s Computers. VECPAR Gerhard Wellein, Georg Hager, Achim Basermann, Holger Fehske