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Workshop: Multi-scale, Multi-physics and Coupled Problems on highly parallel systems (MMCP) at HPC Asia 2021, January 20-22, Jeju/South Korea

This workshop will provide a platform for presentations and discussions on advances in numerical simulation for complex multi-scale, multi-physics and coupled problems. The goal of the workshop is to gather researchers (computer scientists, engineers, mathematicians, physicists, chemists, biologists, material sciences etc.) working on different disciplines but all facing challenges in multi-scale and multi-physics as well as coupled simulations on HPC systems. This workshop is the second event in the series; the first was held at HPCAsia 2020, in Fukuoka, Japan.

Applications with different characteristics in parts of the computational domain lead to additional performance issues. The optimum setting for the one part might be contradictory to the optimum for another; the overall optimum might be a non-optimal, but still a good enough compromise for researchers.

Several approaches have been considered while developing different solutions depending on the application and hardware combination. On the application side, monolithic or partitioned approaches have been introduced; on the hardware side, homogeneous and heterogeneous cluster settings. All combinations have advantages and disadvantages, all leading to the question: how to find the optimal configuration and setting of all parameters, with respect to quality of solution vs. computational efficiency.

The basis is – of course – the performance and efficiency of each component (region or solver), but the characteristics of other scales, other physical phenomena might change the game. Also, a coupling tool might introduce, e.g., load imbalances or hinder the overlapping of communication and computation.

The main focus of the workshop will be set on computational issues regarding performance and suitability for high-performance computing. Furthermore the underlying strategies to enable these simulations will be highlighted.

Keeping these aims in mind, contributions from all aspects of engineering applications will be considered. Topics of applications will include (but not be limited to):

  • Multi-scale problems
  • Multi-physics problems
  • Molecular dynamics
  • Multi-Domain/Concurrency
  • Multi-scale and/or multi-physics modelling for biomedical or biological systems
  • Novel approaches to combine different scales and physics models in one problem solution
  • Challenging applications in industry and academia, e.g. multiphase flows, fluid-structure interactions, chemical engineering, material science, biophysics, automotive industry, …
  • Load balancing
  • Adaptivity
  • Heterogeneous architectures
  • New algorithms for parallel-distributed computing, specific to this topic.

Format and Submission Guidelines

Workshop participants are requested to submit a 2-page abstract (templates for Word and Latex) via EasyChair.

Important dates

Submission deadline:November 13, 2020 (extended)
Notification of Acceptance:November 20, 2020
Conference date:January, 20 to 22, 2021


  • Prof. Dr.-Ing. Sabine Roller
  • Prof. Dr.-Ing. Sabine Roller is professor at the University of Siegen where she is heading the Lab for Simulation Techniques and Scientific Computing as well as the Center for Information and Media Technology (ZIMT). She is working in the field of coupled multi-physics and multi-scale simulations, Computational Fluid Dynamics and efficient implementation of different methods, using parallelization and vectorization techniques, heterogeneous domain decomposition and modern hard- and software developments like GPU computing and PGAS languages. She was scientific chair of the PASC’2018 conference together with Jack Wells, ORNL, and has organized workshops on sustained simulation performance in Japan, as well as a panel on "Funding strategies for HPC software beyond borders" at SC’14, and a workshop on “Software Frameworks for Scalable Scientific Simulations” at ISC’15. She is vice-speaker of the strategic committee of National High-Performance Computing (NHR) at German Joint Science Conference GWK (Gemeinsame Wissenschaftskonferenz).

    Address: University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen/Germany

    Email: sabine.roller@uni-siegen.de

  • Neda Ebrahimi Pour, M. Sc.
  • Neda Ebrahimi Pour, M. Sc. is PhD student in the area of simulation techniques and scientific computing at the University of Siegen. She studied mechanical engineering and her work is related to high performance computing and coupled simulations for fluid-structure-acoustics (FSA) interactions. Starting from 2017, she contributes in the organisation of the yearly CFD Workshop at the University of Siegen. Further, she was one of the co-organizers of the PDSEC’20 workshop at IPDPS conference 2020 as well as the MMCP’20 workshop at HPC Asia conference in 2020 in Fukuoka/Japan. She was also an organizer of the special track at PDSEC’19 workshop at IPDPS conference 2019 in Rio de Janeiro/Brazil.

    Address: University of Siegen, Adolf-Reichwein-Straße 2, 57076 Siegen/Germany

    Email: neda.epour@uni-siegen.de

  • Dr. Osni Marques
  • Dr. Osni Marques is a member of the Scalable Solvers Group, Computational Research Division, at the Lawrence Berkeley National Laboratory. Osni’s research interests include algorithms for the solution of eigenvalue problems, software libraries and tools for the solution of computational problems, methodologies for improving the development of software libraries and applications, and parallel and scientific computing. He is currently co-PI in the DOE-funded projects Advancing Software Productivity for Exascale Applications (IDEAS-ECP), and Frameworks, Algorithms and Scalable Technologies for Mathematics (FASTMath) SciDAC Institute. He is also a collaborator in the project Extreme-scale Scientific Software Development Kit for the ECP (xSDK4ECP). Osni has contributed to projects funded by the NSF for the development of the LAPACK and ScaLAPACK libraries of algorithms for dense linear algebra calculations. Osni was awarded a M.Sc. and a Ph.D. in Structural Engineering by the Federal University of Rio de Janeiro, Brazil.

    Address: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 50F-1650, Berkeley, CA 94720-8139

    Email: oamarques@lbl.gov

Program Committee members

  • Hiroyuki Takizawa, Tohoku University, Department of Mechanical Engineering, High Performance Computing, Japan
  • Holger Marschall, Technical University of Darmstadt, Thermo-Fluids & Interfaces, Germany
  • Ryusuke Egawa, Tokyo Denki University, Department of Information and Communication Engineering, Japan
  • Keita Teranishi, Sandia National Laboratories, California, USA
  • Benjamin Uekermann, Eindhoven University of Technology, Department of Mechanical Engineering, Energy Technology, Netherland


Time Title Authors
18:30 - 18:40 10:30 - 10:40 Opening Remarks Sabine Roller (STS, Zimt, University of Siegen), Osni Marques( Scalable Solvers Group, Lawrence Berkeley National Laboratory)
18:40 - 19:25 10:40 - 11:25 Invited Talk: High Performance Computing and Its Industrial Applications in Fugaku Era (Abstract) Chisachi Kato (University of Tokyo, Center for Research on Innovative Simulation Software (CISS))
19:25 - 19:35 11:25 - 11:35 Break
19:35 - 19:50 11:35 - 11:50 Talk: Multi-scale Modelling of Urban Air Pollution with Coupled Weather Forecast and Traffic Simulation on HPC Architecture László Környei (Széchenyi István University), Zoltán Horváth, Ákos Kovács, Bence Liszkai, Andreas Ruopp
19:50 - 20:05 11:50 - 12:05 Talk: Advantages of Space-Time Finite Elements for Domains with Time Varying Topology Norbert Hosters (RWTH Aachen), Maximilian von Danwitz, Patrick Antony, Marek Behr
20:05 - 20:20 12:05 - 12:20 Talk: Molecular-Continuum Flow Simulation in the Exascale and Big Data Era Philipp Neumann (Helmut-Schmidt University), Vahid Jafari, Piet Jarmatz, Felix Maurer, Helene Wittenberg, Niklas Wittmer
20:20 - 20:30 12:20 - 12:30 Break
20:30 - 20:45 12:30 - 12:45 Talk: An efficient halo approach for Euler-Lagrange simulations based on MPI-3 shared memory Patrick Kopper (University of Stuttgart), Marcel Pfeiffer, Stephen Copplestone, Andrea Beck
20:45 - 21:00 12:45 - 13:00 Talk: Node-level Performance Optimizations in CFD Codes Peter Wauligmann (High Performance Computing Center Stuttgart (HLRS)), Jakob Dürrwächter, Philipp Offenhäuser, Adrian Schlottke, Martin Bernreuther, Björn Dick
21:00 - 21:10 13:00 - 13:10 Closing Remarks Sabine Roller (STS, Zimt, University of Siegen), Osni Marques( Scalable Solvers Group, Lawrence Berkeley National Laboratory)

The program is also available as PDF file.