About Me

August 16th, 2018 Comments off

Dr. Christian Engelmann is an Senior R&D Staff Scientist in the Computer Science Research Group at Oak Ridge National Laboratory, which is the US Department of Energy’s (DOE) largest multiprogram science and technology laboratory with an annual budget of $1.4 billion. He has 17 years experience in software research and development for extreme-scale high-performance computing (HPC) systems with a strong funding and publication record. In collaboration with other laboratories and universities, Dr. Engelmann’s research solves computer science challenges in HPC software, such as scalability, dependability, energy efficiency, and portability.

His primary expertise is in HPC resilience, i.e., providing efficiency and correctness in the presence of faults, errors, and failures through avoidance, masking, and recovery. Dr. Engelmann is a leading expert in HPC resilience and was a member of the DOE Technical Council on HPC Resilience. He received the 2015 DOE Early Career Award for research in resilience design patterns for extreme scale HPC.

His secondary expertise is in lightweight simulation of future-generation extreme-scale supercomputers with millions of processors, studying the impact of hardware and software properties on the key HPC system design factors: performance, resilience, and power consumption.

Dr. Engelmann earned a M.Sc. in Computer Systems Engineering from the University of Applied Sciences Berlin, Germany, in 2001, a M.Sc. in Computer Science from the University of Reading, UK, also in 2001 as part of a double diploma, and a Ph.D. in Computer Science from the University of Reading in 2008. He is a Senior Member of the Association for Computing Machinery (ACM) and a Member of the Institute of Electrical and Electronics Engineers (IEEE), the Society for Industrial and Applied Mathematics (SIAM), and the Advanced Computing Systems Association (USENIX).

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e-Mail: engelmannc@computer.org|engelmannc@ornl.gov
Mail: P.O. Box 2008, Oak Ridge, TN 37831-6016, USA 		Phone: +1 (865) 574-3132
Fax: +1 (865) 576-5491
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ORCID iD iconorcid.org/0000-0003-4365-6416
Scopus ID: 18037364000

In the News

2018-08-05: inside HPC: Characterizing Faults, Errors and Failures in Extreme-Scale Computing Systems
2015-07-15: ASCR Discovery – Mounting a charge. Early-career awardees attack exascale computing on two fronts: power and resilience.
2015-07-15: HPC Wire – Tackling Power and Resilience at Exascale.

Professional Accomplishments

12 Research grants ($29.4M, 4 as lead-PI) 11 Peer-reviewed journal articles 52 Invited talks and seminars
8 Co-advised Master theses 52 Peer-reviewed conference papers 140 Committees at 42 conference series
4 Mentored summer faculty 39 Peer-reviewed workshop papers 50 Journal article and book proposal reviews
10 Direct reports over the past 10 years 10 Peer-reviewed conference posters 11 Conference booth exhibitions
Erdős number of 3 2,800+ Total publication citations H-index of 28 / i10-index of 54
Awards: 2015 US Department of Energy Early Career Research Award

Ongoing Research Activities

2015-…: The Resilience Design Patterns project will increase the ability of scientific applications to reach accurate solutions in a timely and efficient manner. Using a novel design pattern concept, it identifies and evaluates repeatedly occurring resilience problems and coordinates solutions throughout high-performance computing hardware and software … more.
2015-…: The Characterizing Faults, Errors, and Failures in Extreme-Scale Systems (Catalog) project identifies, categorizes and models the fault, error and failure properties of US Department of Energy high-performance computing (HPC) systems. It develops a fault taxonomy, catalog and models that capture the observed and inferred conditions in current systems and extrapolate this knowledge to exascale HPC systems … more

Recent Events

2018-07-03: Invited talk on Characterizing Faults, Errors, and Failures in Extreme-Scale Systems at the Platform for Advanced Scientific Computing (PASC) Conference 2018, Basel, Switzerland.
2018-06-25: With 27,648 NVIDIA V100 Volta GPUs and 9,216 22-core 4-way SMT IBM Power 9 processors in 4,608 compute nodes, ORNL’s Summit IBM supercomputer is 1st in the Top 500 List of supercomputers with a LINPACK performance of 122.3 PFlops and a power consumption of 8.8 MW.
2018-06-25: With 18,688 NVIDIA K20X Kepler GPUs and 18,688 16-core AMD Opteron processors in 18,688 compute nodes, ORNL’s Titan Cray XK7 supercomputer is 7th in the Top 500 List of supercomputers with a LINPACK performance of 17.95 PFlops and a power consumption of 8.2 MW.
2018-06-20: Invited talk on Characterizing Faults, Errors, and Failures in Extreme-Scale Systems at the 6th Accelerated Data Analytics and Computing (ADAC) Institute Workshop, Zurich, Switzerland.
2018-04-11: Presentation of the co-authored research paper, Pattern-based Modeling of Multiresilience Solutions for High-Performance Computing, at the 9th ACM/SPEC International Conference on Performance Engineering (ICPE) 2018, Berlin, Germany.
2018-03-21: Presentation of the co-authored research paper, Shrink or Substitute: Handling Process Failures in HPC Systems using In-situ Recovery, at the 26th Euromicro International Conference on Parallel, Distributed, and network-based Processing (PDP) 2018, Cambridge, UK.
2018-03-07: Invited talk on Pattern-based Modeling of Fail-stop and Soft-error Resilience for Iterative Linear Solvers at the 18th SIAM Conference on Parallel Processing for Scientific Computing (PP) 2018, Tokyo, Japan.
2018-03-07: Invited talk on Resilience Design Patterns: A Structured Approach to Resilience at Extreme Scale at the 18th SIAM Conference on Parallel Processing for Scientific Computing (PP) 2018, Tokyo, Japan.
2017-11-15: Presentation of the co-authored research paper, Failures in Large Scale Systems: Long-Term Measurement, Analysis, and Implications, at the 30th IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC), Denver, CO, USA.
2017-11-15: Chair of the Birds of a Feather session, Characterizing Faults, Errors, and Failures in Extreme-Scale Systems, at the 30th IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC), Denver, CO, USA.
2017-11-13: Technical program chair at the 8th Workshop on Latest Advances in Scalable Algorithms for Large-Scale Systems (ScalA), held in conjunction with the 30th IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC), Denver, CO, USA.

Important Peer-reviewed Journal Publications

Symbols: Abstract Abstract, Publication Publication, BibTeX Citation BibTeX Citation, DOI Link DOI Link

  1. Saurabh Hukerikar and Christian Engelmann. Resilience Design Patterns: A Structured Approach to Resilience at Extreme Scale. Journal of Supercomputing Frontiers and Innovations (JSFI), volume 4, number 3, pages 4-42, 2017. South Ural State University Chelyabinsk, Russia. ISSN 2409-6008. Abstract Publication BibTeX Citation DOI Link
  2. Amogh Katti, Giuseppe Di Fatta, Thomas Naughton, and Christian Engelmann. Epidemic Failure Detection and Consensus. International Journal of High Performance Computing Applications (IJHPCA), 2017. SAGE Publications. ISSN 1094-3420. Abstract Publication BibTeX Citation DOI Link
  3. Christian Engelmann and Thomas Naughton. A New Deadlock Resolution Protocol and Message Matching Algorithm for the Extreme-scale Simulator. Concurrency and Computation: Practice and Experience, volume 28, number 12, pages 3369-3389, 2016. John Wiley & Sons, Inc.. ISSN 1532-0634. Abstract Publication BibTeX Citation DOI Link
  4. Marc Snir, Robert W. Wisniewski, Jacob A. Abraham, Sarita V. Adve, Saurabh Bagchi, Pavan Balaji, Jim Belak, Pradip Bose, Franck Cappello, Bill Carlson, Andrew A. Chien, Paul Coteus, Nathan A. Debardeleben, Pedro Diniz, Christian Engelmann, Mattan Erez, Saverio Fazzari, Al Geist, Rinku Gupta, Fred Johnson, Sriram Krishnamoorthy, Sven Leyffer, Dean Liberty, Subhasish Mitra, Todd Munson, Rob Schreiber, Jon Stearley, and Eric Van Hensbergen. Addressing Failures in Exascale Computing. International Journal of High Performance Computing Applications (IJHPCA), volume 28, number 2, pages 127-171, 2014. SAGE Publications. ISSN 1094-3420. Abstract Publication BibTeX Citation DOI Link
  5. Christian Engelmann. Scaling To A Million Cores And Beyond: Using Light-Weight Simulation to Understand The Challenges Ahead On The Road To Exascale. Future Generation Computer Systems (FGCS), volume 30, number 0, pages 59-65, 2014. Elsevier B.V, Amsterdam, The Netherlands. ISSN 0167-739X. Abstract Publication BibTeX Citation DOI Link
  6. Chao Wang, Frank Mueller, Christian Engelmann, and Stephen L. Scott. Proactive Process-Level Live Migration and Back Migration in HPC Environments. Journal of Parallel and Distributed Computing (JPDC), volume 72, number 2, pages 254-267, 2012. Elsevier B.V, Amsterdam, The Netherlands. ISSN 0743-7315. Abstract Publication BibTeX Citation DOI Link
  7. Xubin (Ben) He, Li Ou, Christian Engelmann, Xin Chen, and Stephen L. Scott. Symmetric Active/Active Metadata Service for High Availability Parallel File Systems. Journal of Parallel and Distributed Computing (JPDC), volume 69, number 12, pages 961-973, 2009. Elsevier B.V, Amsterdam, The Netherlands. ISSN 0743-7315. Abstract Publication BibTeX Citation DOI Link

Important Peer-reviewed Conference Publications

Symbols: Abstract Abstract, Publication Publication, Presentation Presentation, BibTeX Citation BibTeX Citation, DOI Link DOI Link

  1. Saurabh Gupta, Tirthak Patel, Christian Engelmann, and Devesh Tiwari. Failures in Large Scale Systems: Long-term Measurement, Analysis, and Implications. In Proceedings of the 30th IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC) 2017, pages 44:1-44:12, Denver, CO, USA, November 12-17, 2017. ACM Press, New York, NY, USA. ISBN 978-1-4503-5114-0. Acceptance rate 18.7% (61/327). Abstract Publication Presentation BibTeX Citation DOI Link
  2. Bin Nie, Ji Xue, Saurabh Gupta, Christian Engelmann, Evgenia Smirni, and Devesh Tiwari. Characterizing Temperature, Power, and Soft-Error Behaviors in Data Center Systems: Insights, Challenges, and Opportunities. In Proceedings of the 25th IEEE International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS) 2017, pages 22-31, Banff, AB, Canada, September 20-22, 2017. IEEE Computer Society, Los Alamitos, CA, USA. ISBN 978-1-5386-2764-8. ISSN 2375-0227. Acceptance rate 30.95% (26/84). Abstract Publication BibTeX Citation DOI Link
  3. Kun Tang, Devesh Tiwari, Saurabh Gupta, Ping Huang, QiQi Lu, Christian Engelmann, and Xubin He. Power-Capping Aware Checkpointing: On the Interplay Among Power-Capping, Temperature, Reliability, Performance, and Energy. In Proceedings of the 46th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), pages 311-322, Toulouse, France, June 28 – July 1, 2016. IEEE Computer Society, Los Alamitos, CA, USA. ISSN 2158-3927. Acceptance rate 22.4% (58/259). Abstract Publication BibTeX Citation DOI Link
  4. David Fiala, Frank Mueller, Kurt Ferreira, and Christian Engelmann. Mini-Ckpts: Surviving OS Failures in Persistent Memory. In Proceedings of the 30th ACM International Conference on Supercomputing (ICS) 2016, pages 7:1-7:14, Istanbul, Turkey, June 1-3, 2016. ACM Press, New York, NY, USA. ISBN 978-1-4503-4361-9. Acceptance rate 24.2% (43/178). Abstract Publication Presentation BibTeX Citation DOI Link
  5. Leonardo Bautista-Gomez, Ana Gainaru, Swann Perarnau, Devesh Tiwari, Saurabh Gupta, Franck Cappello, Christian Engelmann, and Marc Snir. Reducing Waste in Large Scale Systems Through Introspective Analysis. In Proceedings of the 30th IEEE International Parallel and Distributed Processing Symposium (IPDPS) 2016, pages 212-221, Chicago, IL, USA, May 23-27, 2012. IEEE Computer Society, Los Alamitos, CA, USA. ISSN 1530-2075. Acceptance rate 23.0% (114/496). Abstract Publication Presentation BibTeX Citation DOI Link
  6. David Fiala, Frank Mueller, Christian Engelmann, Kurt Ferreira, Ron Brightwell, and Rolf Riesen. Detection and Correction of Silent Data Corruption for Large-Scale High-Performance Computing. In Proceedings of the 25th IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC) 2012, pages 78:1-78:12, Salt Lake City, UT, USA, November 10-16, 2012. ACM Press, New York, NY, USA. ISBN 978-1-4673-0804-5. Acceptance rate 21.2% (100/472). Abstract Publication Presentation BibTeX Citation
  7. James Elliott, Kishor Kharbas, David Fiala, Frank Mueller, Kurt Ferreira, and Christian Engelmann. Combining Partial Redundancy and Checkpointing for HPC. In Proceedings of the 32nd International Conference on Distributed Computing Systems (ICDCS) 2012, pages 615-626, Macau, SAR, China, June 18-21, 2012. IEEE Computer Society, Los Alamitos, CA, USA. ISBN 978-0-7695-4685-8. ISSN 1063-6927. Acceptance rate 13% (71/515). Abstract Publication Presentation BibTeX Citation DOI Link
  8. Chao Wang, Sudharshan S. Vazhkudai, Xiaosong Ma, Fei Meng, Youngjae Kim, and Christian Engelmann. NVMalloc: Exposing an Aggregate SSD Store as a Memory Partition in Extreme-Scale Machines. In Proceedings of the 26th IEEE International Parallel and Distributed Processing Symposium (IPDPS) 2012, pages 957-968, Shanghai, China, May 21-25, 2012. IEEE Computer Society, Los Alamitos, CA, USA. ISBN 978-0-7695-4675-9. Acceptance rate 21% (118/569). Abstract Publication Presentation BibTeX Citation DOI Link
  9. Swen Böhm and Christian Engelmann. xSim: The Extreme-Scale Simulator. In Proceedings of the International Conference on High Performance Computing and Simulation (HPCS) 2011, pages 280-286, Istanbul, Turkey, July 4-8, 2011. IEEE Computer Society, Los Alamitos, CA, USA. ISBN 978-1-61284-383-4. Acceptance rate 28.1% (48/171). Abstract Publication Presentation BibTeX Citation DOI Link
  10. Chao Wang, Frank Mueller, Christian Engelmann, and Stephen L. Scott. Hybrid Checkpointing for MPI Jobs in HPC Environments. In Proceedings of the 16th IEEE International Conference on Parallel and Distributed Systems (ICPADS) 2010, pages 524-533, Shanghai, China, December 8-10, 2010. IEEE Computer Society, Los Alamitos, CA, USA. ISBN 978-0-7695-4307-9. Acceptance rate 29.6% (77/188). Abstract Publication Presentation BibTeX Citation DOI Link
  11. Min Li, Sudharshan S. Vazhkudai, Ali R. Butt, Fei Meng, Xiaosong Ma, Youngjae Kim, Christian Engelmann, and Galen Shipman. Functional Partitioning to Optimize End-to-End Performance on Many-Core Architectures. In Proceedings of the 23rd IEEE/ACM International Conference on High Performance Computing, Networking, Storage and Analysis (SC) 2010, pages 1-12, New Orleans, LA, USA, November 13-19, 2010. ACM Press, New York, NY, USA. ISBN 978-1-4244-7559-9. Acceptance rate 19.8% (50/253). Abstract Publication Presentation BibTeX Citation DOI Link