Dr. rer. nat. Oliver Meister

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Meister.jpg
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


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

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Posters

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Talks

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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

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Research Stays

Teaching

Lab Courses

Seminars

Tutorials