Logo des Fachbereichs Informatik MIN Faculty
Department of Informatics
Scientific Computing

Prof. Dr. Thomas Ludwig

thomasludwig.jpg

E-mailludwig@dkrz.de
AddressDKRZ, room 119
Telephone+49 40 460094-200
PGPC7F5 EC20 77C1 1682 E4BD D360 9044 79B4 E650 1A1A

Biography

Thomas Ludwig received his doctoral degree and the German habilitation degree at the Technische Universität München, where he conducted research on HPC from 1988 to 2001. From 2001 to 2009 he had a chair for parallel computing at the Universität Heidelberg. 2009 he moved to Hamburg. He is now director of the German Climate Computing Center (DKRZ) and professor at the Universität Hamburg. His research activity is in the fields of high volume data storage, energy efficiency, and performance analysis concepts and tools for parallel systems. At DKRZ Prof. Ludwig takes the responsibility for accomplishing its mission: to provide high performance computing platforms, sophisticated and high capacity data management, and superior service for premium climate science.

Teaching

Wintersemester 2016/2017

Sommersemester 2016

Wintersemester 2015/2016

Sommersemester 2015

Wintersemester 2014/2015

Sommersemester 2014

Wintersemester 2013/2014

Sommersemester 2013

Wintersemester 2012/2013

Sommersemester 2012

Wintersemester 2011/2012

Sommersemester 2011

Wintersemester 2010/2011

Sommersemester 2010

Wintersemester 2009/2010

Publications

2016

2015

  • ArduPower: A low-cost wattmeter to improve energy efficiency of HPC applications (Manuel F. Dolz, Mohammad Reza Heidari, Michael Kuhn, Thomas Ludwig, Germán Fabregat), In Sixth International Green Computing Conference and Sustainable Computing Conference (IGSC) 2015, pp. 1–8, IEEE, IGSC 2015, Las Vegas, USA, 2015-12
    BibTeX DOI
  • MPI-Checker - Static Analysis for MPI (Alexander Droste, Michael Kuhn, Thomas Ludwig), In Proceedings of the Second Workshop on the LLVM Compiler Infrastructure in HPC, LLVM '15, ACM (New York, USA), SC15, Austin, Texas, USA, ISBN: 978-1-4503-4005-2, 2015-11
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  • A Best Practice Analysis of HDF5 and NetCDF-4 Using Lustre (Christopher Bartz, Konstantinos Chasapis, Michael Kuhn, Petra Nerge, Thomas Ludwig), In High Performance Computing, Lecture Notes in Computer Science (9137), pp. 274–281, (Editors: Julian Martin Kunkel, Thomas Ludwig), Springer International Publishing (Switzerland), ISC 2015, Frankfurt, Germany, ISBN: 978-3-319-20118-4, ISSN: 0302-9743, 2015-06
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2014

  • Exascale Storage Systems – An Analytical Study of Expenses (Julian Kunkel, Michael Kuhn, Thomas Ludwig), In Supercomputing Frontiers and Innovations, Series: Volume 1, Number 1, pp. 116–134, (Editors: Jack Dongarra, Vladimir Voevodin), 2014-06
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  • Compression By Default - Reducing Total Cost of Ownership of Storage Systems (Michael Kuhn, Konstantinos Chasapis, Manuel Dolz, Thomas Ludwig), In Supercomputing, Lecture Notes in Computer Science (8488), (Editors: Julian Martin Kunkel, Thomas Ludwig, Hans Werner Meuer), Springer International Publishing (Berlin, Heidelberg), ISC 2014, Leipzig, Germany, ISBN: 978-3-319-07517-4, ISSN: 0302-9743, 2014-06
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  • Evaluating Power-Performace Benefits of Data Compression in HPC Storage Servers (Konstantinos Chasapis, Manuel Dolz, Michael Kuhn, Thomas Ludwig), In IARIA Conference, pp. 29–34, (Editors: Steffen Fries, Petre Dini), IARIA XPS Press, ENERGY 2014, Chamonix, France, ISBN: 978-1-61208-332-2, ISSN: 2308-412X, 2014-04-20 – Awards: Best Paper
    BibTeX
  • Evaluating Lustre's Metadata Server on a Multi-socket Platform (Konstantinos Chasapis, Manuel Dolz, Michael Kuhn, Thomas Ludwig), In Proceedings of the 9th Parallel Data Storage Workshop, PDSW (2014), pp. 13–18, IEEE Press (Piscataway, NJ, USA), SC14, New Orleans, Louisiana, ISBN: 978-1-4799-7025-4, 2014
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2013

  • Towards Self-optimization in HPC I/O (Michaela Zimmer, Julian Kunkel, Thomas Ludwig), In Supercomputing, Lecture Notes in Computer Science (7905), pp. 422–434, (Editors: Julian Martin Kunkel, Thomas Ludwig, Hans Werner Meuer), Springer (Berlin, Heidelberg), ISC 2013, Leipzig, Germany, ISBN: 978-3-642-38749-4, ISSN: 0302-9743, 2013-06
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  • Evaluating Lossy Compression on Climate Data (Nathanael Hübbe, Al Wegener, Julian Kunkel, Yi Ling, Thomas Ludwig), In Supercomputing, Lecture Notes in Computer Science (7905), pp. 343–356, (Editors: Julian Martin Kunkel, Thomas Ludwig, Hans Werner Meuer), Springer (Berlin, Heidelberg), ISC 2013, Leipzig, Germany, ISBN: 978-3-642-38749-4, ISSN: 0302-9743, 2013-06
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  • Towards I/O Analysis of HPC Systems and a Generic Architecture to Collect Access Patterns (Marc Wiedemann, Julian Kunkel, Michaela Zimmer, Thomas Ludwig, Michael Resch, Thomas Bönisch, Xuan Wang, Andriy Chut, Alvaro Aguilera, Wolfgang E. Nagel, Michael Kluge, Holger Mickler), In Computer Science - Research and Development, Series: 28, pp. 241–251, Springer New York Inc. (Hamburg, Berlin, Heidelberg), ISSN: 1865-2034, 2013-05
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2012

  • Simulation-Aided Performance Evaluation of Server-Side Input/Output Optimizations (Michael Kuhn, Julian Kunkel, Thomas Ludwig), In 20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, pp. 562–566, (Editors: Rainer Stotzka, Michael Schiffers, Yiannis Cotronis), IEEE Computer Society (Los Alamitos, Washington, Tokyo), PDP 2012, Munich Network Management Team, Garching, Germany, ISBN: 978-0-7695-4633-9, ISSN: 1066-6192, 2012
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  • Scientific Computing: Performance and Efficiency in Climate Models (Sandra Schröder, Michael Kuhn, Nathanael Hübbe, Julian Kunkel, Timo Minartz, Petra Nerge, Florens Wasserfall, Thomas Ludwig), In Proceedings of the Work in Progress Session, 20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, SEA-Publications (31), (Editors: Erwin Grosspietsch, Konrad Klöckner), Institute for Systems Engineering and Automation (Johannes Kepler University Linz), PDP 2012, Munich Network Management Team, Garching, Germany, ISBN: 978-3-902457-31-8, 2012
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  • Tracing and Visualization of Energy-Related Metrics (Timo Minartz, Julian M. Kunkel, Thomas Ludwig), In 26th IEEE International Parallel & Distributed Processing Symposium Workshops, IEEE Computer Society, HPPAC 2012, Shanghai, China, 2012
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  • Evaluating the Influence of File System Interfaces and Semantics on I/O Throughput in High Performance Computing (Christina Janssen, Michael Kuhn, Thomas Ludwig), In Proceedings of the Work in Progress Session, 20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, SEA-Publications (31), (Editors: Erwin Grosspietsch, Konrad Klöckner), Institute for Systems Engineering and Automation (Johannes Kepler University Linz), PDP 2012, Munich Network Management Team, Garching, Germany, ISBN: 978-3-902457-31-8, 2012
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  • Tool Environments to Measure Power Consumption and Computational Performance (Timo Minartz, Daniel Molka, Julian Kunkel, Michael Knobloch, Michael Kuhn, Thomas Ludwig), In Handbook of Energy-Aware and Green Computing (Ishfaq Ahmad, Sanjay Ranka), Chapters: 31, pp. 709–743, Chapman and Hall/CRC Press Taylor and Francis Group (6000 Broken Sound Parkway NW, Boca Raton, FL 33487), ISBN: 978-1-4398-5040-4, 2012
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  • eeClust: Energy-Efficient Cluster Computing (Timo Minartz, Daniel Molka, Michael Knobloch, Stephan Krempel, Thomas Ludwig, Wolfgang E. Nagel, Bernd Mohr, Hugo Falter), In Competence in High Performance Computing 2010, pp. 111–124, Springer Berlin Heidelberg (Heidelberg), CiHPC 2010, Schwetzingen, Germany, ISBN: 978-3-642-24025-6, 2012
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  • Visualization of MPI(-IO) Datatypes (Julian Kunkel, Thomas Ludwig), In Applications, Tools and Techniques on the Road to Exascale Computing, Advances in Parallel Computing (22), pp. 473–480, (Editors: Koen De Bosschere, Erik H. D'Hollander, Gerhard R. Joubert, David Padua, Frans Peters), IOS Press (Amsterdam, Berlin, Tokyo, Washington DC), ParCo 2011, University of Ghent, ELIS Department, Ghent, Belgium, ISBN: 978-1-61499-040-6, ISSN: 0927-5452, 2012
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  • Optimizations for Two-Phase Collective I/O (Michael Kuhn, Julian Kunkel, Yuichi Tsujita, Hidetaka Muguruma, Thomas Ludwig), In Applications, Tools and Techniques on the Road to Exascale Computing, Advances in Parallel Computing (22), pp. 455–462, (Editors: Koen De Bosschere, Erik H. D'Hollander, Gerhard R. Joubert, David Padua, Frans Peters), IOS Press (Amsterdam, Berlin, Tokyo, Washington DC), ParCo 2011, University of Ghent, ELIS Department, Ghent, Belgium, ISBN: 978-1-61499-040-6, ISSN: 0927-5452, 2012
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  • IOPm – Modeling the I/O Path with a Functional Representation of Parallel File System and Hardware Architecture (Julian Kunkel, Thomas Ludwig), In 20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, pp. 554–561, (Editors: Rainer Stotzka, Michael Schiffers, Yiannis Cotronis), IEEE Computer Society (Los Alamitos, Washington, Tokyo), PDP 2012, Munich Network Management Team, Garching, Germany, ISBN: 978-0-7695-4633-9, ISSN: 1066-6192, 2012
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  • Simulating Application and System Interaction with PIOsimHD (Julian Kunkel, Thomas Ludwig), In Proceedings of the Work in Progress Session, 20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, SEA-Publications (31), (Editors: Erwin Grosspietsch, Konrad Klöckner), Institute for Systems Engineering and Automation (Johannes Kepler University Linz), PDP 2012, Munich Network Management Team, Garching, Germany, ISBN: 978-3-902457-31-8, 2012
    BibTeX

2011

  • Poster: eeClust - Energy-Efficient Cluster Computing (Michael Knobloch, Timo Minartz, Daniel Molka, Stephan Krempel, Thomas Ludwig, Bernd Mohr), Seattle, USA, Supercomputing Conference, 2011-11-15
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  • Towards an Energy-Aware Scientific I/O Interface – Stretching the ADIOS Interface to Foster Performance Analysis and Energy Awareness (Julian Kunkel, Timo Minartz, Michael Kuhn, Thomas Ludwig), In Computer Science - Research and Development, Series: 1, (Editors: Thomas Ludwig), Springer (Berlin / Heidelberg, Germany), 2011
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  • Performance Characteristics of Global High-Resolution Ocean (MPIOM) and Atmosphere (ECHAM6) Models on Large-Scale Multicore Cluster (Panagiotis Adamidis, Irina Fast, Thomas Ludwig), In Parallel Computing Technologies - 11th International Conference, PaCT 2011, Kazan, Russia, September 19-23, 2011. Proceedings, Lecture Notes in Computer Science (6873), pp. 390–403, (Editors: Victor Malyshkin), Springer, PaCT, Kazan, Russia, ISBN: 978-3-642-23177-3, 2011
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  • Managing Hardware Power Saving Modes for High Performance Computing (Timo Minartz, Michael Knobloch, Thomas Ludwig, Bernd Mohr), In Green Computing Conference and Workshops (IGCC), 2011 International, pp. 1–8, IGCC, Orlando, Florida, USA, ISBN: 978-1-4577-1222-7, 2011
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2010

  • Classification of Network Computers Based on Distribution of ICMP-echo Round-trip Times (Julian Kunkel, Jan C. Neddermeyer, Thomas Ludwig), Research Papers (1), Staats- und Universitätsbibliothek Hamburg (Carl von Ossietzky, Von-Melle-Park 3, 20146 Hamburg), 2010-09-28
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  • Poster: Simulation of Cluster Power Consumption and Energy-to-Solution (Timo Minartz, Julian Kunkel, Thomas Ludwig), Passau, Germany, International Conference on Energy-Efficient Computing and Networking, 2010-04-14
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  • From experimental setup to bioinformatics: an RNAi screening platform to identify host factors involved in HIV-1 replication (Kathleen Börner, Johannes Hermle, Christoph Sommer, Nigel P. Brown, Bettina Knapp, Bärbel Glass, Julian Kunkel, Gloria Torralba, Jürgen Reymann, Nina Beil, Jürgen Beneke, Rainer Pepperkok, Reinhard Schneider, Thomas Ludwig, Michael Hausmann, Fred Hamprecht, Holger Erfle, Lars Kaderali, Hans-Georg Kräusslich, Maik J. Lehmann), In Biotechnology Journal, Series: 5-1, pp. 39–49, WILEY-VCH (Weinheim, Germany), ISSN: 1860-7314, 2010-01
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  • Tracing Performance of MPI-I/O with PVFS2: A Case Study of Optimization (Yuichi Tsujita, Julian Kunkel, Stephan Krempel, Thomas Ludwig), In Parallel Computing: From Multicores and GPU's to Petascale, pp. 379–386, IOS Press, PARCO 2009, ISBN: 978-1-60750-530-3, 2010
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  • I/O Performance Evaluation with Parabench – Programmable I/O Benchmark (Olga Mordvinova, Dennis Runz, Julian Kunkel, Thomas Ludwig), In Procedia Computer Science, Series: 1-1, pp. 2119–2128, Elsevier B.V (Amsterdam, Netherlands), ISSN: 1877-0509, 2010
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  • I/O Benchmarking of Data Intensive Applications (Olga Mordvinova, Thomas Ludwig, Christian Bartholomä), In Problems in Programming, Series: 2-3, pp. 107–115, National Academy of Sciences of Ukraine, ISSN: 1727-4907, 2010
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  • Simulation of power consumption of energy efficient cluster hardware (Timo Minartz, Julian Kunkel, Thomas Ludwig), In Computer Science - Research and Development, Series: 3, pp. 165–175, (Editors: Thomas Ludwig), Springer (Berlin / Heidelberg, Germany), ISSN: 1865-2034, 2010
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2009

  • Tracing Internal Communication in MPI and MPI-I/O (Julian Kunkel, Yuichi Tsujita, Olga Mordvinova, Thomas Ludwig), In International Conference on Parallel and Distributed Computing, Applications and Technologies, PDCAT, pp. 280–286, IEEE Computer Society (Washington, DC, USA), PDCAT-09, Hiroshima University, Higashi Hiroshima, Japan, ISBN: 978-0-7695-3914-0, 2009-12-29
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  • USB Flash Drives as an Energy Efficiency Storage Alternative (Olga Mordvinova, Julian Kunkel, Christian Baun, Thomas Ludwig, Marcel Kunze), In Proceedings of the 10th IEEE/ACM International Conference on Grid Computing, pp. 175–182, IEEE Computer Society (Washington, DC, USA), GRID-09, IEEE/ACM, Banff, Alberta, Canada, ISBN: 978-1-4244-5148-7, 2009-10
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  • Using Non-blocking I/O Operations in High Performance Computing to Reduce Execution Times (David Buettner, Julian Kunkel, Thomas Ludwig), In Proceedings of the 16th European PVM/MPI Users' Group Meeting on Recent Advances in Parallel Virtual Machine and Message Passing Interface, pp. 134–142, Springer-Verlag (Berlin, Heidelberg), EuroPVM/MPI-09, CSC - IT, Espoo, Finland, ISBN: 978-3-642-03769-6, 2009
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  • Poster: Data Storage and Processing for High Throughput RNAi Screening (Julian Kunkel, Thomas Ludwig, M. Hemberger, G. Torralba, E. Schmitt, M. Hausmann, V. Lindenstruth, N. Brown, R. Schneider), Heidelberg, Germany, German Symposium on Systems Biology 2009, 2009
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  • A Strategy for Cost Efficient Distributed Data Storage for In-memory OLAP (Olga Mordvinova, Oleksandr Shepil, Thomas Ludwig, Andrew Ross), In Proceedings of the IADIS International Conference Applied Computing 2009 (1), pp. 109–117, IADIS Press (Algarve, Portugal), IADIS-09, International Association for Development of the Information Society, Rome, Italy, ISBN: 978-972-8924-97-3, 2009
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  • Small-file Access in Parallel File Systems (Philip Carns, Sam Lang, Robert Ross, Murali Vilayannur, Julian Kunkel, Thomas Ludwig), In IPDPS '09: Proceedings of the 2009 IEEE International Symposium on Parallel and Distributed Processing, pp. 1–11, IEEE Computer Society (Washington, DC, USA), IPDPS-09, University of Rome, Rome, Italy, ISBN: 978-1-4244-3751-1, 2009
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  • Dynamic file system semantics to enable metadata optimizations in PVFS (Michael Kuhn, Julian Kunkel, Thomas Ludwig), In Concurrency and Computation: Practice and Experience, Series: 21-14, pp. 1775–1788, John Wiley and Sons Ltd. (Chichester, UK), ISSN: 1532-0626, 2009
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2008

  • Bottleneck Detection in Parallel File Systems with Trace-Based Performance Monitoring (Julian Kunkel, Thomas Ludwig), In Euro-Par '08: Proceedings of the 14th international Euro-Par conference on Parallel Processing, pp. 212–221, Springer-Verlag (Berlin, Heidelberg), Euro-Par-08, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain, ISBN: 978-3-540-85450-0, 2008
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  • Directory-Based Metadata Optimizations for Small Files in PVFS (Michael Kuhn, Julian Kunkel, Thomas Ludwig), In Euro-Par '08: Proceedings of the 14th international Euro-Par conference on Parallel Processing, pp. 90–99, Springer-Verlag (Berlin, Heidelberg), Euro-Par-08, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain, ISBN: 978-3-540-85450-0, 2008 – Awards: Best Paper
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2007

  • Performance Evaluation of the PVFS2 Architecture (Julian Kunkel, Thomas Ludwig), In PDP '07: Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, pp. 509–516, IEEE Computer Society (Washington, DC, USA), PDP-07, Euromicro, Napoli, Italy, ISBN: 0-7695-2784-1, 2007
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  • Analysis of the MPI-IO Optimization Levels with the PIOViz Jumpshot Enhancement (Thomas Ludwig, Stephan Krempel, Michael Kuhn, Julian Kunkel, Christian Lohse), In Recent Advances in Parallel Virtual Machine and Message Passing Interface, Lecture Notes in Computer Science (4757), pp. 213–222, (Editors: Franck Cappello, Thomas Hérault, Jack Dongarra), Springer (Berlin / Heidelberg, Germany), EuroPVM/MPI-07, Institut national de recherche en informatique et automatique, Paris, France, ISBN: 978-3-540-75415-2, 2007
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  • Smart Carpet: A Footstep Tracking Interface (Domnic Savio, Thomas Ludwig), In Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops (2), pp. 754–760, IEEE Computer Society (Washington, DC, USA), AINAW-07, IEEE, Niagara Falls, Ontario, Canada, ISBN: 978-0-7695-2847-2, 2007
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2006

  • Tracing the MPI-IO Calls' Disk Accesses (Thomas Ludwig, Stephan Krempel, Julian Kunkel, Frank Panse, Dulip Withanage), In Recent Advances in Parallel Virtual Machine and Message Passing Interface, Lecture Notes in Computer Science (4192), pp. 322–330, (Editors: Bernd Mohr, Jesper Larsson Träff, Joachim Worringen, Jack Dongarra), Springer (Berlin / Heidelberg, Germany), EuroPVM/MPI-06, C&C Research Labs, NEC Europe Ltd., and the Research Centre Jülich, Bonn, Germany, ISBN: 3-540-39110-X, 2006
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2005

  • Hint Controlled Distribution with Parallel File Systems (Hipolito Vasquez, Thomas Ludwig), In Recent Advances in Parallel Virtual Machine and Message Passing Interface (3666), pp. 110–118, Springer (Berlin / Heidelberg, Germany), EuroPVM/MPI-05, Sorrento, Italy, ISBN: 978-3-540-29009-4, 2005
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2004

  • A Fast Program for Phylogenetic Tree Inference with Maximum Likelihood (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier), In High Performance Computing in Science and Engineering, pp. 273–283, (Editors: Siegfried Wagner, Werner Hanke, Arndt Bode, Franz Durst), Springer (Berlin / Heidelberg, Germany), ISBN: 978-3-540-26657-0, 2004-05
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  • Parallel Inference of a 10.000-taxon Phylogeny with Maximum Likelihood (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier), In Euro-Par 2004 Parallel Processing, Lecture Notes in Computer Science (3149), pp. 997–1004, (Editors: Marco Danelutto, Marco Vanneschi, Domenico Laforenza), Springer (Berlin / Heidelberg, Germany), Euro-Par-04, University of Pisa and Institute of Information Science and Technologies (ISTI-CNR), Pisa, Italy, 2004
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  • Research Trends in High Performance Parallel Input/Output for Cluster Environments (Thomas Ludwig), In Proceedings of the 4th International Scientific and Practical Conference on Programming, pp. 274–281, UkrPROG-04, National Academy of Sciences of Ukraine, Kiev, Ukraine, 2004
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  • New Fast and Accurate Heuristics for Inference of Large Phylogenetic Trees (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier), In Proceedings of 18th IEEE/ACM International Parallel and Distributed Processing Symposium, pp. 193, IEEE Computer Society (Washington, DC, USA), IPDPS-04, University of New Mexico, Santa Fe, New Mexico, ISBN: 0-7695-2132-0, 2004
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  • Phylogenies with Statistical Methods: Problems & Solutions (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier), In Proceedings of 4th International Conference on Bioinformatics and Genome Regulation and Structure, pp. 229–233, BGRS-04, Novosibirsk, Russia, 2004
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  • A Fast Program for Maximum Likelihood-based Inferrence of Large Phylogenetic Trees (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier), In Proceedings of the 2004 ACM symposium on Applied computing, pp. 197–201, ACM (New York, USA), SAC-04, University of Cyprus, Nicosia, Cyprus, ISBN: 1-58113-812-1, 2004
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  • Helics - ein Rechner der Superklasse (Peter Bastian, Thomas Ludwig), In Ruperto Carola, Series: 3, pp. 4–7, Universitätsverlag C. Winter (Heidelberg), ISSN: 0035-998 X, 2004
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2003

  • Monitoring concepts for parallel systems: an evolution towards interoperable tool environments (Roland Wismüller, Thomas Ludwig, Wolfgang Karl, Arndt Bode), In On-line monitoring systems and computer tool interoperability (Thomas Ludwig, Barton Miller), pp. 1–21, Nova Science Publishers, Inc. (Commack, NY, USA), ISBN: 1-59033-888-X, 2003
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  • On-line monitoring systems and computer tool interoperability (Thomas Ludwig, Barton Miller), Nova Science Publishers, Inc. (Commack, NY, USA), ISBN: 1-59033-888-X, 2003
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  • DAxML: A Program for Distributed Computation of Phylogenetic Trees Based on Load Managed CORBA (Alexandros Stamatakis, Markus Lindermeier, Michael Ott, Thomas Ludwig, Harald Meier), In Parallel Computing Technologies, Lecture Notes in Computer Science (2763), pp. 538–548, (Editors: Victor Malyshkin), Springer (Berlin / Heidelberg, Germany), PaCT-03, Nizhni Novgorod State University and Russian Academy of Sciences (Academgorodok, Novosibirsk), Nizhni Novgorod, Russia, 2003
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  • Phylogenetic tree inference on PC architectures with AxML/PAxML (Alexandros P. Stamatakis, Thomas Ludwig), In Proceedings of the International Parallel and Distributed Processing Symposium, pp. 8, IEEE Computer Society (Washington, DC, USA), IPDPS-03, University of Nice, Nice, France, ISBN: 0-7695-1926-1, 2003
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2002

  • Efficiently Building On-Line Tools for Distributed Heterogeneous Environments (Günther Rackl, Thomas Ludwig, Markus Lindermeier, Alexandros Stamatakis), In Proceedings of the International Workshop on Performance-Oriented Application Development for Distributed Architectures, Scientific Programming (10-1), pp. 67–74, IOS Press (Amsterdam, The Netherlands), PADDA-01, Technical University Munich, Munich, Germany, ISSN: 1058-9244, 2002
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  • Adapting PAxML to the Hitachi SR8000-F1 Supercomputer (Alexandros Stamatakis, Thomas Ludwig, Harald Meier), In High Performance Computing in Science and Engineering (Siegfried Wagner, Werner Hanke, Arndt Bode, Franz Durst), pp. 453–466, Springer (Berlin / Heidelberg, Germany), 2002
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  • Accelerating Parallel Maximum Likelihood-based Phylogenetic Tree Calculations using Subtree Equality Vectors (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier, Marty J. Wolf), In Proceedings of the Supercomputing Conference 2002, pp. 40, IEEE Computer Society (Washington, DC, USA), sc-02, IEEE/ACM, Baltimore, Maryland, USA, ISBN: 0-7695-1524-X, 2002
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  • AxML: a fast program for sequential and parallel phylogenetic tree calculations based on the maximum likelihood method (Alexandros P. Stamatakis, Thomas Ludwig, Harald Meier, Marty J. Wolf), In Proceedings of 1. IEEE Bioinformatics Conference, pp. 21–28, IEEE Computer Society (Washington, DC, USA), CSB-02, Stanford University, Palo Alto, California, USA, ISBN: 0-7695-1653-X, 2002
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  • Efficiently building on-line tools for distributed heterogeneous environments (Günther Rackl, Thomas Ludwig, Markus Lindermeier, Alexandros Stamatakis), In Scientific Programming, Series: 10 (1), pp. 67–74, IOS Press (Amsterdam, The Netherlands), ISSN: 1058-9244, 2002
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2001

  • Tool Environments in CORBA-Based Medical High Performance Computing (Thomas Ludwig, Markus Lindermeier, Alexandros Stamatakis, Günther Rackl), In Parallel Computing Technologies, Lecture Notes in Computer Science (2127), pp. 447–455, (Editors: Victor Malyshkin), Springer (Berlin / Heidelberg, Germany), PaCT-01, Institute of Computational Mathematics and Mathematical Geophysics of the Russian Academy of Sciences (Novosibirsk), Novosibirsk, Russia, 2001
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  • EveMan - a Mobile Time and Space Organisation System for the Palm Computing Platform (Andreas Krause, Thomas Ludwig), In ITG-Fachbericht 168, VDE Verlag (Berlin, Germany), APC-01, Munich, Germany, 2001
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  • A methodology for efficiently developing on-line tools for heterogeneous middleware (Thomas Ludwig, Günther Rackl), In Proceedings of the 34th Annual Hawaii International Conference on System Sciences, pp. 10, IEEE Computer Society (Washington, DC, USA), HICSS-34, University of Hawaii, Island of Maui, Hawaii, USA, ISBN: 0-7695-0981-9, 2001
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2000

  • Airport simulation using CORBA and DIS (Günther Rackl, Filippo de Stefani, Francois Héran, Antonello Pasquarelli, Thomas Ludwig), In Future Generation Computer Systems, Series: 16 (5), pp. 465–472, Elsevier Science Publishers B. V. (Amsterdam, The Netherlands), ISSN: 0167-739X, 2000
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  • Interoperable Run Time Tools for Distributed Systems - A Case Study (Roland Wismüller, Thomas Ludwig), In The Journal of Supercomputing, Series: 17-3, pp. 277–289, Springer (Berlin / Heidelberg, Germany), ISSN: 0920-8542, 2000
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  • Interoperability Support in Distributed On-Line Monitoring Systems (Jörg Trinitis, Vaidy Sunderam, Thomas Ludwig, Roland Wismüller), In Proceedings of High Performance Computing and Networking - 8th International Conference, Lecture Notes in Computer Science (1823), pp. 261–269, (Editors: Marian Bubak, Hamideh Afsarmanesh, Bob Hertzberger, Roy Williams), Springer (Berlin / Heidelberg, Germany), HPCN-00, University of Amsterdam, Amsterdam, The Netherlands, 2000
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  • CORBA-basierte verteilte Berechnung medizinischer Bilddaten mit SPM (Marcel May, Frank Munz, Thomas Ludwig), In Bildverarbeitung für die Medizin, Informatik aktuell, pp. 213–217, (Editors: Alexander Horsch, Thomas Lehmann), Springer (Berlin / Heidelberg, Germany), BVM-00, Technical University Munich, Munich, Germany, ISBN: 3-540-67123-4, 2000
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  • Effiziente Scheduling-Algorithmen für datenparallele Anwendungen der funktionellen medizinischen Bildgebung auf NOWs (Frank Munz, Thomas Ludwig, Arndt Bode, Sibylle Ziegler, Markus Schwaiger), In Bildverarbeitung für die Medizin, Informatik aktuell, pp. 403–407, (Editors: Alexander Horsch, Thomas Lehmann), Springer (Berlin / Heidelberg, Germany), BVM-00, Technical University Munich, Munich, Germany, ISBN: 3-540-67123-4, 2000
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  • Performance assessment of parallel spectral analysis: Towards a practical performance model for parallel medical applications (Frank Munz, Thomas Ludwig, Sibylle Ziegler, Peter Bartenstein, Markus Schwaiger, Arndt Bode), In Future Generation Computer Systems, Series: 16 (5), pp. 553–562, Elsevier Science Publishers B. V. (Amsterdam, The Netherlands), ISSN: 0167-739X, 2000
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1999

  • Kinetic analysis of functional images: The case for a practical approach to performance prediction (Frank Munz, Thomas Ludwig, Sibylle Ziegler, Peter Bartenstein, Markus Schwaiger, Arndt Bode), In High Performance Computing, Lecture Notes in Computer Science (1615), pp. 169–180, (Editors: Constantine Polychronopoulos, Kazuki Fukuda, Shinji Tomita), Springer (Berlin / Heidelberg, Germany), ISHPC-99, Kyoto, Japan, 1999
    BibTeX URL DOI
  • Synergetic Tool Environments (Thomas Ludwig, Jörg Trinitis, Roland Wismüller), In Parallel Computing Technologies, Lecture Notes in Computer Science (1662), pp. 754–754, (Editors: Victor Malyshkin), Springer (Berlin / Heidelberg, Germany), PaCT-99, Institute of Computational Mathematics and Mathematical Geophysics of the Russian Academy of Sciences (Novosibirsk) and the Electrotechnical University of St.Petersburg, St. Petersburg, Russia, 1999
    BibTeX URL DOI
  • Towards Monitoring in Parallel and Distributed Environments (Ivan Zoraja, Günther Rackl, Thomas Ludwig), In Proceedings of the International Conference on Software in Telecommunications and Computer Networks, pp. 133–141, SoftCom-99, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, FESB Split, Trieste, Venice, Italy, 1999
    BibTeX URL DOI

Talks

2010

2008

  • Werkzeuge zur Analyse der Speicher- und Energieeffizienz bei Hochleistungsrechnern (Prof. Dr. Thomas Ludwig), Meeting, University Frankfurt, Computer Science Department, 2008-05-17 Abstract Presentation
  • Performance Visualization of MPI-IO Operations in Parallel Programs (Prof. Dr. Thomas Ludwig), International Workshop on Advanced Computing and Applications, Ho Chi Minh City, Vietnam, 2008-03-16

Supervised Theses

Impressum
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