René Widera

32 papers A 2B 1Journal 18Unranked 11
YearRankTypeTitle / Venue / Authors
2025 — conf
A Parallel and Highly-Portable HPC Poisson Solver: Preconditioned Bi-CGSTAB with alpaka.
IPDPS (Workshops)
Luca Pennati, Måns I. Andersson, Klaus Steiniger, René Widera, Tapish Narwal, Michael Bussmann, Stefano Markidis
2025 J jnl
A Parallel and Highly-Portable HPC Poisson Solver: Preconditioned Bi-CGSTAB with alpaka.
CoRR
Luca Pennati, Måns I. Andersson, Klaus Steiniger, René Widera, Tapish Narwal, Michael Bussmann, Stefano Markidis
2025 J jnl
Optimizations on Graph-Level for Domain Specific Computations in Julia and Application to QED.
CoRR
Anton Reinhard, Simeon Ehrig, René Widera, Michael Bussmann, Uwe Hernandez Acosta
2025 J jnl
The Artificial Scientist - in-transit Machine Learning of Plasma Simulations.
CoRR
Jeffrey Kelling, Vicente Bolea, Michael Bussmann, Ankush Checkervarty, Alexander Debus, Jan Ebert, Greg Eisenhauer, Vineeth Gutta, Stefan Kesselheim, Scott Klasky, Richard Pausch, Norbert Podhorszki, Franz Pöschel, David Rogers, Jeyhun Rustamov, Steve Schmerler, Ulrich Schramm, Klaus Steiniger, René Widera, Anna Willmann, Sunita Chandrasekaran
2025 A conf
The Artificial Scientist: in-Transit Machine Learning of Plasma Simulations.
IPDPS
Jeffrey Kelling, Vicente Bolea, Michael Bussmann, Ankush Checkervarty, Alexander Debus, Jan Ebert, Greg Eisenhauer, Vineeth Gutta, Stefan Kesselheim, Scott Klasky, Vedhas Pandit, Richard Pausch, Norbert Podhorszki, Franz Pöschel, David Rogers, Jeyhun Rustamov, Steve Schmerler, Ulrich Schramm, Klaus Steiniger, René Widera, Anna Willmann, Sunita Chandrasekaran
2024 — conf
Enabling High- Throughput Parallel I/O in Particle-in-Cell Monte Carlo Simulations with openPMD and Darshan I/O Monitoring.
CLUSTER Workshops
Jeremy J. Williams, Daniel Medeiros, Stefan Costea, David Tskhakaya, Franz Poeschel, René Widera, Axel Huebl, Scott Klasky, Norbert Podhorszki, Leon Kos, Ales Podolnik, Jakub Hromadka, Tapish Narwal, Klaus Steiniger, Michael Bussmann, Erwin Laure, Stefano Markidis
2024 J jnl
Enabling High-Throughput Parallel I/O in Particle-in-Cell Monte Carlo Simulations with openPMD and Darshan I/O Monitoring.
CoRR
Jeremy J. Williams, Daniel Medeiros, Stefan Costea, David Tskhakaya, Franz Poeschel, René Widera, Axel Huebl, Scott Klasky, Norbert Podhorszki, Leon Kos, Ales Podolnik, Jakub Hromadka, Tapish Narwal, Klaus Steiniger, Michael Bussmann, Erwin Laure, Stefano Markidis
2023 — conf
Application Experiences on a GPU-Accelerated Arm-based HPC Testbed.
HPC Asia Workshops
Wael R. Elwasif, William F. Godoy, Nick Hagerty, James Austin Harris, Oscar R. Hernandez, Bálint Joó, Paul R. C. Kent, Damien Lebrun-Grandié, Elijah A. MacCarthy, Verónica G. Melesse Vergara, Bronson Messer, Ross Miller, Sarp Oral, Sergei I. Bastrakov, Michael Bussmann, Alexander Debus, Klaus Steiniger, Jan Stephan, René Widera, Spencer H. Bryngelson, Henry Le Berre, Anand Radhakrishnan, Jeffrey Young, Sunita Chandrasekaran, Florina M. Ciorba, Osman Seckin Simsek, Kate Clark, Filippo Spiga, Jeff R. Hammond, John E. Stone, David J. Hardy, Sebastian Keller, Jean-Guillaume Piccinali, Christian Trott
2023 J jnl
EZ: An efficient, charge conserving current deposition algorithm for electromagnetic particle-in-cell simulations.
Comput. Phys. Commun.
Klaus Steiniger, René Widera, Sergey I. Bastrakov, Michael Bussmann, Sunita Chandrasekaran, Benjamín Hernández, Kristina Holsapple, Axel Huebl, Guido Juckeland, Jeffrey Kelling, Matt Leinhauser, Richard Pausch, David M. Rogers, Ulrich Schramm, Jeffrey Young, Alexander Debus
2023 — conf
Hardware-Agnostic Interactive Exascale In Situ Visualization of Particle-In-Cell Simulations.
PASC
Felix Meyer, Benjamín Hernández, Richard Pausch, René Widera, David Groß, Sergei I. Bastrakov, Axel Huebl, Guido Juckeland, Jeffrey Kelling, Matt Leinhauser, David M. Rogers, Ulrich Schramm, Klaus Steiniger, Stefan Gumhold, Jeff Young, Michael Bussmann, Sunita Chandrasekaran, Alexander Debus
2023 J jnl
LLAMA: The low-level abstraction for memory access.
Softw. Pract. Exp.
Bernhard Manfred Gruber, Guilherme Amadio, Jakob Blomer, Alexander Matthes, René Widera, Michael Bussmann
2022 J jnl
Early Application Experiences on a Modern GPU-Accelerated Arm-based HPC Platform.
CoRR
Wael R. Elwasif, Sergei I. Bastrakov, Spencer H. Bryngelson, Michael Bussmann, Sunita Chandrasekaran, Florina M. Ciorba, Michael A. Clark, Alexander Debus, William F. Godoy, Nick Hagerty, Jeff R. Hammond, David J. Hardy, James Austin Harris, Oscar R. Hernandez, Bálint Joó, Sebastian Keller, Paul R. C. Kent, Henry Le Berre, Damien Lebrun-Grandié, Elijah A. MacCarthy, Verónica G. Melesse Vergara, Bronson Messer, Ross Miller, Sarp Oral, Jean-Guillaume Piccinali, Anand Radhakrishnan, Osman Seckin Simsek, Filippo Spiga, Klaus Steiniger, Jan Stephan, John E. Stone, Christian Trott, René Widera, Jeffrey Young
2022 — conf
Evaluating GPU Programming Models for the LUMI Supercomputer.
SCFA
George S. Markomanolis, Aksel Alpay, Jeff Young, Michael Klemm, Nicholas Malaya, Aniello Esposito, Jussi Heikonen, Sergey I. Bastrakov, Alexander Debus, Thomas Kluge, Klaus Steiniger, Jan Stephan, René Widera, Michael Bussmann
2022 J jnl
Metrics and Design of an Instruction Roofline Model for AMD GPUs.
ACM Trans. Parallel Comput.
Matthew Leinhauser, René Widera, Sergei I. Bastrakov, Alexander Debus, Michael Bussmann, Sunita Chandrasekaran
2021 — conf
Challenges Porting a C++ Template-Metaprogramming Abstraction Layer to Directive-Based Offloading.
WACCPD@SC
Jeffrey Kelling, Sergey I. Bastrakov, Alexander Debus, Thomas Kluge, Matt Leinhauser, Richard Pausch, Klaus Steiniger, Jan Stephan, René Widera, Jeff Young, Michael Bussmann, Sunita Chandrasekaran, Guido Juckeland
2021 J jnl
Challenges Porting a C++ Template-Metaprogramming Abstraction Layer to Directive-based Offloading.
CoRR
Jeffrey Kelling, Sergei I. Bastrakov, Alexander Debus, Thomas Kluge, Matt Leinhauser, Richard Pausch, Klaus Steiniger, Jan Stephan, René Widera, Jeff Young, Michael Bussmann, Sunita Chandrasekaran, Guido Juckeland
2021 J jnl
LLAMA: The Low Level Abstraction For Memory Access.
CoRR
Bernhard Manfred Gruber, Guilherme Amadio, Jakob Blomer, Alexander Matthes, René Widera, Michael Bussmann
2021 J jnl
Metrics and Design of an Instruction Roofline Model for AMD GPUs.
CoRR
Matthew Leinhauser, René Widera, Sergei I. Bastrakov, Alexander Debus, Michael Bussmann, Sunita Chandrasekaran
2021 B conf
Transitioning from File-Based HPC Workflows to Streaming Data Pipelines with openPMD and ADIOS2.
SMC
Franz Poeschel, Juncheng E, William F. Godoy, Norbert Podhorszki, Scott Klasky, Greg Eisenhauer, Philip E. Davis, Lipeng Wan, Ana Gainaru, Junmin Gu, Fabian Koller, René Widera, Michael Bussmann, Axel Huebl
2021 J jnl
Transitioning from file-based HPC workflows to streaming data pipelines with openPMD and ADIOS2.
CoRR
Franz Poeschel, Juncheng E, William F. Godoy, Norbert Podhorszki, Scott Klasky, Greg Eisenhauer, Philip E. Davis, Lipeng Wan, Ana Gainaru, Junmin Gu, Fabian Koller, René Widera, Michael Bussmann, Axel Huebl
2017 — conf
On the Scalability of Data Reduction Techniques in Current and Upcoming HPC Systems from an Application Perspective.
ISC Workshops
Axel Huebl, René Widera, Felix Schmitt, Alexander Matthes, Norbert Podhorszki, Jong Youl Choi, Scott Klasky, Michael Bussmann
2017 J jnl
On the Scalability of Data Reduction Techniques in Current and Upcoming HPC Systems from an Application Perspective.
CoRR
Axel Huebl, René Widera, Felix Schmitt, Alexander Matthes, Norbert Podhorszki, Jong Youl Choi, Scott Klasky, Michael Bussmann
2017 — conf
Tuning and Optimization for a Variety of Many-Core Architectures Without Changing a Single Line of Implementation Code Using the Alpaka Library.
ISC Workshops
Alexander Matthes, René Widera, Erik Zenker, Benjamin Worpitz, Axel Huebl, Michael Bussmann
2017 J jnl
Tuning and optimization for a variety of many-core architectures without changing a single line of implementation code using the Alpaka library.
CoRR
Alexander Matthes, René Widera, Erik Zenker, Benjamin Worpitz, Axel Huebl, Michael Bussmann
2016 — conf
Alpaka - An Abstraction Library for Parallel Kernel Acceleration.
IPDPS Workshops
Erik Zenker, Benjamin Worpitz, René Widera, Axel Huebl, Guido Juckeland, Andreas Knüpfer, Wolfgang E. Nagel, Michael Bussmann
2016 J jnl
Alpaka - An Abstraction Library for Parallel Kernel Acceleration.
CoRR
Erik Zenker, Benjamin Worpitz, René Widera, Axel Huebl, Guido Juckeland, Andreas Knüpfer, Wolfgang E. Nagel, Michael Bussmann
2016 J jnl
In situ, steerable, hardware-independent and data-structure agnostic visualization with ISAAC.
CoRR
Alexander Matthes, Axel Huebl, René Widera, Sebastian Grottel, Stefan Gumhold, Michael Bussmann
2016 J jnl
In situ, steerable, hardware-independent and data-structure agnostic visualization with ISAAC.
Supercomput. Front. Innov.
Alexander Matthes, Axel Huebl, René Widera, Sebastian Grottel, Stefan Gumhold, Michael Bussmann
2016 — conf
Performance-Portable Many-Core Plasma Simulations: Porting PIConGPU to OpenPower and Beyond.
ISC Workshops
Erik Zenker, René Widera, Axel Huebl, Guido Juckeland, Andreas Knüpfer, Wolfgang E. Nagel, Michael Bussmann
2016 J jnl
Performance-Portable Many-Core Plasma Simulations: Porting PIConGPU to OpenPower and Beyond.
CoRR
Erik Zenker, René Widera, Axel Huebl, Guido Juckeland, Andreas Knüpfer, Wolfgang E. Nagel, Michael Bussmann
2013 A conf
Radiative signatures of the relativistic Kelvin-Helmholtz instability.
SC
Michael Bussmann, Heiko Burau, Thomas E. Cowan, Alexander Debus, Axel Huebl, Guido Juckeland, Thomas Kluge, Wolfgang E. Nagel, Richard Pausch, Felix Schmitt, Ulrich Schramm, Joseph Schuchart, René Widera
2012 — conf
Phase-Based Profiling in GPGPU Kernels.
ICPP Workshops
Robert Dietrich, Felix Schmitt, René Widera, Michael Bussmann