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Roman Iakymchuk

Contact

Dr. Roman Iakymchuk
LIP6 - UPMC
Boîte courrier 169
Couloir 26-00, Étage 3, Bureau 322
4 place Jussieu
75252 Paris Cedex 05

Phone: 0033(0) 144 27 87 73
Emails: roman.iakymchuk (AT) lip6 (DOT) fr
           iakymchuk (AT) aices (DOT) rwth-aachen (DOT) de

Education

02/2009 - 08/2012
Dr. rer. nat. in Computer Science, Aachen Institute for Advanced Study in Computations Engineering Science (AICES), RWTH Aachen University
09/2007 - 06/2008
Master of Science (Hons) in Applied Mathematics and Informatics, Ivan Franko National University of Lviv, Ukraine
09/2003 - 06/2007
Bachelor of Science (Hons) in Applied Mathematics and Informatics, Ivan Franko National University of Lviv, Ukraine

Professional Career

10/2013 - present
Post-doctoral fellow at Université Pierre et Marie Curie (UPMC - Paris VI), Paris, France
10/2012 - 09/2013
Post-doctoral fellow at Institut Mines-Télécom - Télécom SudParis, Evry, France
10/2008 - 01/2009
Assistant Researcher at Ivan Franko National University of Lviv, Ukraine
07/2007 - 01/2009
Software engineer at SoftServe Inc., Lviv, Ukraine
09/2005 - 06/2007
Engineer of Computer Equipment Laboratory at Ivan Franko National University of Lviv, Ukraine

Research Interests

Performance analysis, Performance modeling and prediction, High-performance computing, Numerical linear algebra.


Journal Publications

  • Modeling Performance through Memory-Stalls. (pdf)
    Roman Iakymchuk and Paolo Bientinesi.
    ACM SIGMETRICS Performance Evaluation Review. 2012, Vol. 40, 86-91.
  • On a Secant Type Method for the Nonlinear Least Squares Problem. (pdf)
    Stepan Shakhno, Oleksandra Gnatyshyn, and Roman Iakymchuk.
    Journal of Numerical and Applied Mathematics. 2009, Vol. 97, 112-121.
  • On a One-Step Modification of Gauss-Newton Method under Generalized Lipschitz Conditions for Solving the Nonlinear Least Squares Problem. (link)
    Stepan Shakhno and Roman Iakymchuk.
    PAMM. Vol. 9. Special issue: 80th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Gdansk 2009, 565-566.
  • About Two-Step Modification of Gauss-Newton Method at the Generalized Lipschitz Conditions for Solving the Nonlinear Least Squares Problem. (link) (in Ukrainian)
    Stepan Shakhno and Roman Iakymchuk.
    Math. Visnyk of the Shevchenko Scientific Society. 2009, Vol. 6, 277-287.
  • One Difference Method with Super-Quadratic Convergence for Solving the Nonlinear Least Squares Problem. (pdf) (in Ukrainian)
    Stepan Shakhno, Oleksandra Gnatyshyn, and Roman Iakymchuk.
    Visnyk of the Lviv Univ. Ser. Applied Math. and Inform. 2007, Vol. 13, 51-59.

Peer Reviewed Conference Publications

  • Performance Analysis on Energy Efficient High-Performance Architectures. (pdf)
    Roman Iakymchuk and François Trahay.
    In Proceedings of the 2nd International Conference on Cluster Computing (CC'13). Lviv, Ukraine, June 3-5, 2013, 80-85.
  • Execution-Less Performance Modeling. (pdf)
    Roman Iakymchuk and Paolo Bientinesi.
    In the Proceedings of the second international workshop on Performance Modeling, Benchmarking and Simulation of High-Performance Computing Systems (PMBS11) held as part of the Supercomputing Conference (SC11). Seattle, USA, November 13th, 2011, 11-12.
  • Performance Prediction through Time Measurements. (pdf)
    Roman Iakymchuk.
    In Proceedings of the 1st International Conference on High-Performance Computing (HPC-UA 2011). Kyiv, Ukraine, October 12-14, 2011, 26-32.
  • Improving High-Performance Computations on Clouds Through Resource Underutilization. (pdf)
    Roman Iakymchuk, Jeff Napper, and Paolo Bientinesi.
    In Proceedings of ACM 26th Symposium on Applied Computing, special track on Cloud Computing. Taichung, Taiwan, March 21-25, 2011, 119-126.

Ph.D. Thesis

  • Performance Modeling and Prediction for Linear Algebra Algorithms. (link)
    Advisor: Prof. Paolo Bientinesi, Ph.D. Co-advisor: Prof. Dr. Enrique S. Quitana Ortí.
    AICES, RWTH Aachen University, August, 2012.

Book Chapter

  • HPC on Competitive Cloud Resources. (pdf)
    Paolo Bientinesi, Roman Iakymchuk, and Jeff Napper.
    In Borko Furht and Armando Escalante, editors, Handbook of Cloud Computing. Springer, 2010, 493-516.

News Articles

  • Crowded Clouds. (link)
    Jeff Napper, Roman Iakymchuk, and Paolo Bientinesi.
    HPCwire, August 12th, 2010.
  • HPC Sharing in the Cloud. (link)
    Jeff Napper, Roman Iakymchuk, and Paolo Bientinesi.
    HPC in the Cloud, August 12th, 2010.

Technical Reports

  • On the Convergence Analysis of a Two-Step Modification of the Gauss-Newton Method. (pdf)
    Roman Iakymchuk and Stepan Shakhno.
    HAL ID: hal-00960300. March 2014.
  • Full-Speed Deterministic Bit-Accurate Parallel Floating-Point Summation on Multi- and Many-Core Architectures. (pdf)
    Sylvain Collange, Devid Defour, Stef Graillat, and Roman Iakymchuk.
    HAL ID: hal-00949355. February 2014.
  • LiTL: Lightweight Trace Library. (pdf)
    Roman Iakymchuk and François Trahay.
    HAL ID: hal-00918733. July 2013.
  • Modeling Performance through Memory-Stalls. (preprint, bib)
    Roman Iakymchuk and Paolo Bientinesi.
    AICES-2011/07-1. July 2011.
  • Underutilizing Resources for HPC on Clouds. (preprint, bib)
    Roman Iakymchuk, Jeff Napper, and Paolo Bientinesi.
    AICES-2010/06-1. June 2010.
  • HPC on Competitive Cloud Resources. (preprint, bib)
    Paolo Bientinesi, Roman Iakymchuk, and Jeff Napper.
    AICES-2010/04-2. April 2010.

Talks

  • Performance Analysis on Energy Efficient High-Performance Architectures. (pdf)
    The 2nd International Conference on Cluster Computing (CC'13). Lviv, Ukraine, June 3-5, 2013.
  • Performance Modeling and Prediction for Linear Algebra Algorithms. (pdf)
    Doctoral defence. AICES, RWTH Aachen University, August 30th, 2012.
  • Execution-Less Performance Modeling. (pdf)
    The 2nd International Workshop on Performance Modeling, Benchmarking and Simulation of High-Performance Computing Systems (PMBS11) held as part of the Supercomputing Conference (SC11). Seattle, USA, November 13th, 2011.
  • Performance Prediction through Time Measurements. (pdf)
    The 1st International Conference on High-Performance Computing (HPC-UA 2011). Kyiv, Ukraine, October 12-14, 2011.
  • Modeling Performance through Memory-Stalls. (pdf)
    Conference for Young Scientists "Facing the Multicore-Challenge II". Karlsruhe, Germany, September 28-30, 2011.