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Dr. rer. nat. Oliver Meister

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Address:
TU München
Institut für Informatik
Boltzmannstr. 3
85748 Garching b. München
Office:
Leibniz Supercomputing Centre
Boltzmannstr. 1
E.2.040
Email:
Meisteromail.png
Phone:
(089) 35831-7812
Office hours:
by arrangement


Contents

About me

In May 2010, after I received my Diploma degree in Informatics at the Technische Universität München (TUM), I started working as a PhD student of Univ.-Prof. Dr. Michael Bader, who had a position as a Junior Professor (JP) in the SGS group at the IPVS, Universität Stuttgart. The group was led by Prof. Dr. Marc-Alexander Schweitzer at the time. Shorty afterwards, Michael Bader accepted a position as Univ.-Prof. at TUM. So I moved back to Munich in November 2011 to continue working as a member of the SCCS chair under Univ.-Prof. Dr. Hans-Joachim Bungartz, where I finished my PhD in 2016. Since August 2016 I have been employed in a private company.

My topics of interest include High Performance Computing (HPC) for applications such as multi-phase flow in porous media and tsunami simulation, dynamically adaptive grids, parallelization of structured meshes and load balancing with space-filling curves.

Research

During my PhD, I developed the software project sam(oa)², a framework for efficient, numerical solution of partial differential equations on HPC architectures based on space-filling curve traversal. Two applications were implemented: two-phase porous media flow and tsunami wave propagation.

Two-Phase Porous Media Flow

This is a dynamically adaptive, parallel simulation of the SPE10 benchmark, where the vertical axis has been scaled by a factor 5 for better visibility. Colors indicate the water saturation (blue = 0.2, pink = 1.0), the lower right corner has been clipped. A central well (I1) injects water into the domain and wells (P1, P2, P3, P4) at the four corners produce oil.

SPE10.png

Below is a simulation of slice 0 of SPE10. The left video shows the log-scaled permeability (black to gray) and water saturation (blue = 0.2, pink = 1.0). The right video shows adaptive refinement and coarsening of the grid and the domain decomposition due to load balancing, marked by distinct colors.

SPE10 single slice.0130.png SPE10 single slice geometry.0130.png

Tsunami Wave Propagation

This is a dynamically adaptive, parallel simulation of the Tohoku tsunami 2011. The left video shows the Japanese coast line with exaggerated tsunami wave fronts (green: positive elevation, red: negative elevation). The right video shows a top view of the scenario, with focus on adaptive refinement and coarsening of the grid.

Tohoku side.0016.png Tohoku top.0016.png

Publications and Presentations

Below you can find a selection of published work and talks.

Publications


Posters

  • O. Meister und M. Bader: Dynamically Adaptive, Parallel Simulation of Two Phase Porous Media Flow in a Quarter Five Spot Problem [BibTeX].
    CMWR 2014, Universität Stuttgart, Juni 2014.
  • O. Meister und M. Bader: A Software Concept for Cache-Efficient Adaptive PDE Solvers -- Applied to Porous Media Flow [BibTeX].
    SimTech 2011, Universität Stuttgart, Juni 2011.
  • O. Meister und M. Bader: A Software Concept for Cache-Efficient Adaptive PDE Solvers -- Applied to Porous Media Flow [BibTeX].
    ASIM 2011, Technische Universität München, März 2011.
  • O. Meister und M. Bader: A Software Concept for Memory-Efficient Adaptive Grid Traversals [BibTeX].
    SimTech Statuseminar 2010, Bad Boll, Dezember 2010.


Talks

  • O. Meister: 2D Adaptivity for 3D Problems: Parallel SPE10 Reservoir Simulation on Dynamically Adaptive Prism Grids [BibTeX].
    ICCS'15, Reykjavik University, Island, Juni 2015.
  • O. Meister: Parallelization Techniques for Dynamically Adaptive Tsunami Simulation using Space Filling Curve Orders [BibTeX].
    SIAM CSE15, Salt Lake City, Utah, März 2015. Co-authors Kaveh Rahnema and Michael Bader.
  • O. Meister: MPI/OpenMP Parallelization of Sam(oa)^2 Using Sierpinski Curves [BibTeX].
    SIAM PP14, Portland, Oregon, Februar 2014.
  • O. Meister: A Dynamically Adaptive, Parallel Solver for Porous Media Flow and Tsunami Simulation [BibTeX].
    Selected Topics and International Network Lectures (Invited Talk), Universität Stuttgart, Juni 2013.
  • O. Meister: sam(oa)^2 -- Space Filling Curves and Adaptive Meshes for Oceanic and Other Applications [BibTeX].
    Colloquium (Invited Talk), Imperial College London, März 2013.
  • O. Meister: Dynamically Adaptive Simulation of Two-Phase Porous Media Flow on Triangular Structured Grids [BibTeX].
    EMG 2012, Schwetzingen, Baden-Württemberg, August 2012.
  • O. Meister: Adaptive, Cache-Efficient Simulation of Two-Phase Porous Media Flow [BibTeX].
    ICCE 2011, TU Darmstadt, Oktober 2011.
  • O. Meister: A Software Concept for Cache-Efficient Simulation on Dynamically Adaptive Structured Triangular Grids [BibTeX].
    ParCo 2011, Gent, Belgien, August 2011.
  • O. Meister: SE concepts for a generic simulation framework on triangular structured grids [BibTeX].
    Colloquium (Invited Talk), KlimaCampus Hamburg, November 2010.


Student Theses

I do not work for the chair anymore, but if you are interested in a topic for a student project/thesis, then contact me and I will forward your request to the appropriate person. Open topics include:

  • Efficient neighbour search in a parallel, adaptive framework
  • Preprocessing permeability tensors for upscaling in porous media flow
  • Tuning a parallel tsunami simulation on adaptive grids

More topics are available on request.

Finished Theses

  • A. Pachalieva: Dynamically Adaptive 2.5D Porous Media Flow Simulation on Xeon Phi Architectures [pdf] [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, März 2016.
  • R. Schaller: Parallelization of a Non-Hydrostatic Shallow Water Model in sam(oa)^2 [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, Oktober 2015.
  • P. Samfaß: A Non-Hydrostatic Shallow Water Model on Triangular Meshes in sam(oa)^2 [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, April 2015.
  • D. Klimenko: Evaluation of Preconditioners for Element-Oriented Conjugate Gradients Solvers [pdf] [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Informatik, Technische Universität München, April 2015.
  • J. Rodrigues Monteiro: Comparison of Cartesian and Dynamically Adaptive Grids for the Parallel Simulation of Shallow Water Waves [pdf] [BibTeX].
    Bachelor's thesis, Institut für Informatik, Technische Universität München, Februar 2015.
  • R. Schaller: Dynamic Load Balancing for Riemann Solvers with Unsteady Runtimes [pdf] [BibTeX].
    Bachelor's thesis, Institut für Informatik, Technische Universität München, September 2014.
  • S. Rettenberger: Ein paralleler Server für adaptive Geoinformation in Strömungssimulationen [pdf] [BibTeX].
    Master's thesis, Institut für Informatik, Technische Universität München, Juni 2012.
  • P. Hirmer, J. Hackländer und M. Greis: Systemanalyse und Workflowverwaltung eines Frameworks für Cache-effiziente Adaptive Simulation [BibTeX].
    Studienarbeit/SEP/IDP, Institut für Parallele und Verteilte Systeme, Universität Stuttgart, Oktober 2011.


Research Stays

Teaching

Lab Courses

Seminars

Tutorials

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