Publications

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  • A Similarity Study of I/O Traces via String Kernels (Raul Torres, Julian Kunkel, Manuel F. Dolz, Thomas Ludwig), In The Journal of Supercomputing, pp. 1–13, Springer, ISSN: 0920-8542, 2018-07-03
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  • Poster: Performance Conscious HPC (PeCoH) - 2018 (Kai Himstedt, Nathanael Hübbe, Sandra Schröder, Hendryk Bockelmann, Michael Kuhn, Julian Kunkel, Thomas Ludwig, Stephan Olbrich, Matthias Riebisch, Markus Stammberger, Hinnerk Stüben), Frankfurt, Germany, ISC HPC, 2018-06-26
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  • Poster: A user-controlled GGDML Code Translation Technique for Performance Portability of Earth System Models (Nabeeh Jumah, Julian Kunkel), Frankfurt, Germany, ISC HPC, 2018-06-26
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  • Poster: Advanced Computation and I/O Methods for Earth-System Simulations (AIMES) (Julian Kunkel, Thomas Ludwig, Thomas Dubos, Naoya Maruyama, Takayuki Aoki, Günther Zängl, Hisashi Yashiro, Ryuji Yoshida, Hirofumi Tomita, Masaki Satoh, Yann Meurdesoif, Nabeeh Jumah, Anastasiia Novikova, Anja Gerbes), Frankfurt, Germany, ISC HPC, 2018-06-26
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  • Poster: The Virtual Institute for I/O and the IO-500 (Julian Kunkel, Jay Lofstead, John Bent), Frankfurt, Germany, ISC HPC, 2018-06-26
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  • Poster: International HPC Certification Program (Julian Kunkel, Kai Himstedt, Weronika Filinger, Jean-Thomas Acquaviva, William Jalby, Lev Lafayette), Frankfurt, Germany, ISC HPC, 2018-06-26
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  • A Survey of Storage Systems for High-Performance Computing (Jakob Lüttgau, Michael Kuhn, Kira Duwe, Yevhen Alforov, Eugen Betke, Julian Kunkel, Thomas Ludwig), In Supercomputing Frontiers and Innovations, Series: Volume 5, Number 1, pp. 31–58, (Editors: Jack Dongarra, Vladimir Voevodin), Publishing Center of South Ural State University (454080, Lenin prospekt, 76, Chelyabinsk, Russia), 2018-04
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  • Performance Portability of Earth System Models with User-Controlled GGDML code Translation (Nabeeh Jum'ah, Julian Kunkel), Lecture Notes in Computer Science, pp. 0–0, (Editors: Rio Yokota, Michele Weiland, David Keyes, Carsten Trintis), Springer, P3MA workshop, ISC HPC, ISC Team, Frankfurt, Germany, 2018
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  • Understanding Metadata Latency with MDWorkbench (Julian Kunkel, George S. Markomanolis), Lecture Notes in Computer Science, pp. 0–0, (Editors: Rio Yokota, Michele Weiland, David Keyes, Carsten Trintis), Springer, WOPSSS workshop, ISC HPC, ISC Team, Frankfurt, Germany, 2018
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  • Benefit of DDN's IME-Fuse and IME-Lustre File Systems for I/O Intensive HPC Applications (Eugen Betke, Julian Kunkel), Lecture Notes in Computer Science, pp. 0–0, (Editors: Rio Yokota, Michele Weiland, David Keyes, Carsten Trintis), Springer, WOPSSS workshop, ISC HPC, ISC Team, Frankfurt, Germany, 2018
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  • Tools for Analyzing Parallel I/O (Julian Kunkel, Eugen Betke, Matt Bryson, Philip Carns, Rosemary Francis, Wolfgang Frings, Roland Laifer, Sandra Mendez), Lecture Notes in Computer Science, pp. 0–0, (Editors: Rio Yokota, Michele Weiland, David Keyes, Carsten Trintis), Springer, HPC-IODC workshop, ISC HPC, ISC Team, Frankfurt, Germany, 2018
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  • Cost and Performance Modeling for Earth System Data Management and Beyond (Jakob Lüttgau, Julian Kunkel), Lecture Notes in Computer Science, pp. 0–0, (Editors: Rio Yokota, Michele Weiland, David Keyes, Carsten Trintis), Springer, HPC-IODC workshop, ISC HPC, ISC Team, Frankfurt, Germany, 2018
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  • Towards Green Scientific Data Compression Through High-Level I/O Interfaces (Yevhen Alforov, Anastasiia Novikova, Michael Kuhn, Julian Kunkel, Thomas Ludwig), pp. 0–0, Springer, SBAC-PAD 2018, Lyon, France, 2018
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  • Towards an HPC Certification Program (Julian Kunkel, Kai Himstedt, Nathanael Hübbe, Hinnerk Stüben, Sandra Schröder, Michael Kuhn, Matthias Riebisch, Stephan Olbrich, Thomas Ludwig, Weronika Filinger, Jean-Thomas Acquaviva, Anja Gerbes, Lev Lafayette), In Journal of Computational Science Education, pp. 0–0, 2018
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  • Comparison of Clang Abstract Syntax Trees using String Kernels (Raul Torres, Julian Kunkel, Manuel F. Dolz, Thomas Ludwig), pp. 0–0, CADO 2018, Orleans, France, 2018
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  • Towards Decoupling the Selection of Compression Algorithms from Quality Constraints – an Investigation of Lossy Compression Efficiency (Julian Kunkel, Anastasiia Novikova, Eugen Betke), In Supercomputing Frontiers and Innovations, Series: Volume 4, Number 4, pp. 17–33, (Editors: Jack Dongarra, Vladimir Voevodin), 2017-12
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  • Poster: Toward Decoupling the Selection of Compression Algorithms from Quality Constraints (Julian Kunkel, Anastasia Novikova, Eugen Betke), Denver, CO, USA, SC17, 2017-11-14
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  • Understanding Hardware and Software Metrics with respect to Power Consumption (Julian Kunkel, Manuel F. Dolz), In Sustainable Computing: Informatics and Systems, Series: Sustainable Computing, (Editors: Ishfaq Ahmad), Elsevier, ISSN: 2210-5379, 2017-11-04
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  • Poster: Icosahedral Modeling with GGDML (Nabeeh Jumah, Julian Kunkel, Günther Zängl, Hisashi Yashiro, Thomas Dubos, Yann Meurdesoif), Hamburg, Germany, DKRZ user workshop 2017, 2017-10-09
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  • GGDML: Icosahedral Models Language Extensions (Nabeeh Jumah, Julian Kunkel, Günther Zängl, Hisashi Yashiro, Thomas Dubos, Yann Meurdesoif), In Journal of Computer Science Technology Updates, Series: Volume 4, Number 1, pp. 1–10, Cosmos Scholars Publishing House, 2017-06-21
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  • Poster: Performance Conscious HPC (PeCoH) (Julian Kunkel, Michael Kuhn, Thomas Ludwig, Matthias Riebisch, Stephan Olbrich, Hinnerk Stüben, Kai Himstedt, Hendryk Bockelmann, Markus Stammberger), Frankfurt, Germany, ISC High Performance 2017, 2017-06-20
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  • Poster: Enhanced Adaptive Compression in Lustre (Anna Fuchs, Michael Kuhn, Julian Kunkel, Thomas Ludwig), Frankfurt, Germany, ISC High Performance 2017, 2017-06-20
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  • Poster: Towards Performance Portability for Atmospheric and Climate Models with the GGDML DSL (Nabeeh Jumah, Julian Kunkel, Günther Zängl, Hisashi Yashiro, Thomas Dubos, Yann Meurdesoif), Germany, Frankfurt, ISC 2017, 2017-06-20
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  • Poster: The Virtual Institute for I/O and the IO-500 (Julian Kunkel, Jay Lofstead, John Bent), Frankfurt, Germany, ISC High Performance 2017, 2017-06-20
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  • Poster: Advanced Computation and I/O Methods for Earth-System Simulations (AIMES) (Julian Kunkel, Thomas Ludwig, Thomas Dubos, Naoya Maruyama, Takayuki Aoki, Günther Zängl, Hisashi Yashiro, Ryuji Yoshida, Hirofumi Tomita, Masaki Satoh, Yann Meurdesoif, Nabeeh Jumah, Anastasiia Novikova), Germany, Frankfurt, ISC 2017, 2017-06-20
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  • Wissenschaftliches Rechnen - Scientific Computing - 2016 (Yevhen Alforov, Eugen Betke, Konstantinos Chasapis, Anna Fuchs, Fabian Große, Nabeeh Jumah, Michael Kuhn, Julian Kunkel, Hermann Lenhart, Jakob Lüttgau, Philipp Neumann, Anastasiia Novikova, Jannek Squar, Thomas Ludwig), Research Group: Scientific Computing, University of Hamburg (Deutsches Klimarechenzentrum GmbH, Bundesstraße 45a, D-20146 Hamburg), 2017-06-19
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  • SFS: A Tool for Large Scale Analysis of Compression Characteristics (Julian Kunkel), Research Papers (4), Research Group: Scientific Computing, University of Hamburg (Deutsches Klimarechenzentrum GmbH, Bundesstraße 45a, D-20146 Hamburg), 2017-05-05
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  • Interaktiver C-Programmierkurs, ICP (Julian Kunkel, Jakob Lüttgau), In HOOU Content Projekte der Vorprojektphase 2015/16 – Sonderband zum Fachmagazin Synergie (Kerstin Mayrberger), pp. 182–186, Universität Hamburg (Universität Hamburg, Mittelweg 177, 20148 Hamburg), ISBN: 978-3-924330-57-6, 2017-04-10
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  • An MPI-IO In-Memory Driver for Non-Volatile Pooled Memory of the Kove XPD (Julian Kunkel, Eugen Betke), In High Performance Computing: ISC High Performance 2017 International Workshops, DRBSD, ExaComm, HCPM, HPC-IODC, IWOPH, IXPUG, P^3MA, VHPC, Visualization at Scale, WOPSSS, Lecture Notes in Computer Science (10524), pp. 644–655, (Editors: Julian Kunkel, Rio Yokota, Michaela Taufer, John Shalf), Springer, ISC High Performance, Frankfurt, Germany, ISBN: 978-3-319-67629-6, 2017
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  • A Novel String Representation and Kernel Function for the Comparison of I/O Access Patterns (Raul Torres, Julian Kunkel, Manuel Dolz, Thomas Ludwig), In International Conference on Parallel Computing Technologies, Lecture Notes in Computer Science (10421), pp. 500–512, (Editors: Victor Malyshkin), Springer, PaCT, Nizhni Novgorod, Russia, ISBN: 978-3-319-62932-2, 2017
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  • Toward Decoupling the Selection of Compression Algorithms from Quality Constraints (Julian Kunkel, Anastasiia Novikova, Eugen Betke, Armin Schaare), In High Performance Computing: ISC High Performance 2017 International Workshops, DRBSD, ExaComm, HCPM, HPC-IODC, IWOPH, IXPUG, P^3MA, VHPC, Visualization at Scale, WOPSSS, Lecture Notes in Computer Science (10524), pp. 1–12, (Editors: Julian Kunkel, Rio Yokota, Michaela Taufer, John Shalf), Springer, ISC High Performance, Frankfurt, Germany, ISBN: 978-3-319-67629-6, 2017
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  • Simulation of Hierarchical Storage Systems for TCO and QoS (Jakob Lüttgau, Julian Kunkel), In High Performance Computing: ISC High Performance 2017 International Workshops, DRBSD, ExaComm, HCPM, HPC-IODC, IWOPH, IXPUG, P^3MA, VHPC, Visualization at Scale, WOPSSS, Lecture Notes in Computer Science (10524), pp. 116–128, (Editors: Julian Kunkel, Rio Yokota, Michaela Taufer, John Shalf), Springer, ISC High Performance, Frankfurt, Germany, ISBN: 978-3-319-67629-6, 2017
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  • Real-Time I/O-Monitoring of HPC Applications with SIOX, Elasticsearch, Grafana and FUSE (Eugen Betke, Julian Kunkel), In High Performance Computing: ISC High Performance 2017 International Workshops, DRBSD, ExaComm, HCPM, HPC-IODC, IWOPH, IXPUG, P^3MA, VHPC, Visualization at Scale, WOPSSS, Lecture Notes in Computer Science (10524), pp. 158–170, (Editors: Julian Kunkel, Rio Yokota, Michaela Taufer, John Shalf), Springer, ISC High Performance, Frankfurt, Germany, ISBN: 978-3-319-67629-6, 2017
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  • Poster: Predicting I/O-performance in HPC using Artificial Neural Networks (Jan Fabian Schmid, Julian Kunkel), Frankfurt, ISC High Performance 2015, 2016-21-06
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  • Poster: Analyzing Data Properties using Statistical Sampling Techniques – Illustrated on Scientific File Formats and Compression Features (Julian Kunkel), Frankfurt, ISC High Performance 2016, 2016-21-06 – Awards: Best Poster
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  • Analyzing Data Properties using Statistical Sampling – Illustrated on Scientific File Formats (Julian Kunkel), In Supercomputing Frontiers and Innovations, Series: Volume 3, Number 3, pp. 19–33, (Editors: Jack Dongarra, Vladimir Voevodin), 2016-10
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  • Predicting I/O Performance in HPC Using Artificial Neural Networks (Jan Fabian Schmid, Julian Kunkel), In Supercomputing Frontiers and Innovations, Series: Volume 3, Number 3, pp. 34–39, (Editors: Jack Dongarra, Vladimir Voevodin), 2016-10
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  • Analyzing Data Properties using Statistical Sampling Techniques – Illustrated on Scientific File Formats and Compression Features (Julian Kunkel), In High Performance Computing: ISC High Performance 2016 International Workshops, ExaComm, E-MuCoCoS, HPC-IODC, IXPUG, IWOPH, P3MA, VHPC, WOPSSS, Lecture Notes in Computer Science (9945 2016), pp. 130–141, (Editors: Michela Taufer, Bernd Mohr, Julian Kunkel), Springer, ISC-HPC 2017, Frankfurt, Germany, ISBN: 978-3-319-46079-6, 2016-06
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  • Data Compression for Climate Data (Michael Kuhn, Julian Kunkel, Thomas Ludwig), In Supercomputing Frontiers and Innovations, Series: Volume 3, Number 1, pp. 75–94, (Editors: Jack Dongarra, Vladimir Voevodin), 2016-06
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  • Towards Automatic and Flexible Unit Test Generation for Legacy HPC Code (Christian Hovy, Julian Kunkel), In Proceedings of the Fourth International Workshop on Software Engineering for High Performance Computing in Computational Science and Engineering, SEHPCCSE16, Salt Lake City, Utah, USA, 2016
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  • Poster: Interaktiver C Kurs (ICP) (Julian Kunkel, Thomas Ludwig, Jakob Lüttgau, Dion Timmermann, Christian Kautz, Volker Skwarek), Hamburg, Campus Innovation 2015, 2015-11-27
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  • Poster: Advanced Data Sieving for Non-Contigouous I/O (Enno Zickler, Julian Kunkel), Frankfurt, Germany, 2015-07-13
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  • Identifying Relevant Factors in the I/O-Path using Statistical Methods (Julian Kunkel), Research Papers (3), Research Group: Scientific Computing, University of Hamburg (Deutsches Klimarechenzentrum GmbH, Bundesstraße 45a, D-20146 Hamburg), 2015-03-14
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  • An analytical methodology to derive power models based on hardware and software metrics (Manuel F. Dolz, Julian Kunkel, Konstantinos Chasapis, Sandra Catalan), In Computer Science - Research and Development, pp. 1–10, Springer US, ISSN: 1865-2042, 2015
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  • Speicherung großer Datenmengen und Energieeffizienz (Thomas Ludwig, Manuel Dolz, Michael Kuhn, Julian Kunkel, Hermann Lenhart), Max-Planck-Gesselschaft (München), 2015
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  • Predicting Performance of Non-Contiguous I/O with Machine Learning (Julian Kunkel, Eugen Betke, Michaela Zimmer), In High Performance Computing, 30th International Conference, ISC High Performance 2015, Lecture Notes in Computer Science (9137), pp. 257–273, (Editors: Julian Martin Kunkel, Thomas Ludwig), ISC High Performance, Frankfurt, ISSN: 0302-9743, 2015
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  • Whitepaper: E10 – Exascale IO (Andre Brinkmann, Toni Cortes, Hugo Falter, Julian Kunkel, Sai Narasimhamurthy), 2014-06
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  • 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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  • Feign: In-Silico Laboratory for Researching I/O Strategies (Jakob Lüttgau, Julian Kunkel), In Parallel Data Storage Workshop (PDSW), 2014 9th, pp. 43–48, SC14, New Orleans, 2014
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  • A Comparison of Trace Compression Methods for Massively Parallel Applications in Context of the SIOX Project (Alvaro Aguilera, Holger Mickler, Julian Kunkel, Michaela Zimmer, Marc Wiedemann, Ralph Müller-Pfefferkorn), In Tools for High Performance Computing 2013, pp. 91–105, ISBN: 978-3-319-08143-4, 2014
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  • The SIOX Architecture – Coupling Automatic Monitoring and Optimization of Parallel I/O (Julian Kunkel, Michaela Zimmer, Nathanael Hübbe, Alvaro Aguilera, Holger Mickler, Xuan Wang, Andrij Chut, Thomas Bönisch, Jakob Lüttgau, Roman Michel, Johann Weging), In Supercomputing, Supercomputing, pp. 245–260, (Editors: Julian Kunkel, Thomas Ludwig, Hans Meuer), Lecture Notes in Computer Science, ISC'14, ISC events, Leipzig, ISBN: 978-3-319-07517-4, 2014
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  • ICON DSL: A Domain-Specific Language for climate modeling (Raul Torres, Leonidas Lindarkis, Julian Kunkel, Thomas Ludwig), In WOLFHPC 2013 Third International Workshop on Domain-Specific Languages and High-Level Frameworks for High Performance Computing, SC13, Denver, 2013-11-18
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  • Poster: Source-to-Source Translation for Climate Models (Raul Torres, Leonidas Lindarkis, Julian Kunkel), Leipzig, Germany, International Supercomputing Conference 2013, 2013-06-17
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  • 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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  • Using Simulation to Validate Performance of MPI(-IO) Implementations (Julian Kunkel), In Supercomputing, Lecture Notes in Computer Science (7905), pp. 181–195, (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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  • Performance-optimized clinical IMRT planning on modern CPUs (Peter Ziegenhein, Cornelis Ph Kamerling, Mark Bangert, Julian Kunkel, Uwe Oelfke), In Physics in Medicine and Biology, Series: Volume 58 Number 11, IOP Publishing, ISSN: 1361-6560, 2013-05-08
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  • Reducing the HPC-Datastorage Footprint with MAFISC – Multidimensional Adaptive Filtering Improved Scientific data Compression (Nathanel Hübbe, Julian Kunkel), In Computer Science - Research and Development, Series: Volume 28, Issue 2-3, pp. 231–239, Springer, 2013-05
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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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  • A Study on Data Deduplication in HPC Storage Systems (Dirk Meister, Jürgen Kaiser, Andre Brinkmann, Michael Kuhn, Julian Kunkel, Toni Cortes), In Proceedings of the ACM/IEEE Conference on High Performance Computing (SC), IEEE Computer Society, SC'12, Salt Lake City, USA, 2012-11-10
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  • Simulating parallel programs on application and system level (Julian Kunkel), In Computer Science – Research and Development, Series: Volume 28 Number 2-3, Springer (Berlin, Heidelberg), ISSN: 1865-2042, 2012-06
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  • 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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  • 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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  • 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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  • 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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  • 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
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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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  • 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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  • HDTrace – A Tracing and Simulation Environment of Application and System Interaction (Julian Kunkel), Research Papers (2), Research Group: Scientific Computing, University of Hamburg (Deutsches Klimarechenzentrum GmbH, Bundesstraße 45a, D-20146 Hamburg), 2011-01-23
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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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  • System Performance Comparison of Stencil Operations with the Convey HC-1 (Julian Kunkel, Petra Nerge), Technical Reports (1), Research Group: Scientific Computing, University of Hamburg (Deutsches Klimarechenzentrum GmbH, Bundesstraße 45a, D-20146 Hamburg), 2010-11-16
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  • 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: Benchmarking Application I/O in the Community (Julian Kunkel, Olga Mordvinova, Dennis Runz, Michael Kuhn, Thomas Ludwig), Hamburg, Germany, International Supercomputing Conference, 2010-06-01
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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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  • Collecting Energy Consumption of Scientific Data (Julian Kunkel, Olga Mordvinova, Michael Kuhn, Thomas Ludwig), In Computer Science - Research and Development, Series: 3, pp. 1–9, (Editors: Thomas Ludwig), Springer (Berlin / Heidelberg, Germany), ISSN: 1865-2034, 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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