Table of Contents

Raul Torres




Wintersemester 2014/2015

Sommersemester 2014

Wintersemester 2013/2014

Sommersemester 2013



  • 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
    BibTeX DOI
    Abstract: Parallel I/O access patterns act as fingerprints of a parallel program. In order to extract meaningful information from these patterns, they have to be represented appropriately. Due to the fact that string objects can be easily compared using Kernel Methods, a conversion to a weighted string representation is proposed in this paper, together with a novel string kernel function called Kast Spectrum Kernel. The similarity matrices, obtained after applying the mentioned kernel over a set of examples from a real application, were analyzed using Kernel Principal Component Analysis (Kernel PCA) and Hierarchical Clustering. The evaluation showed that 2 out of 4 I/O access pattern groups were completely identified, while the other 2 conformed a single cluster due to the intrinsic similarity of their members. The proposed strategy can be promisingly applied to other similarity problems involving tree-like structured data.


  • 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
    BibTeX URL
  • Poster: Source-to-Source Translation for Climate Models (Raul Torres, Leonidas Lindarkis, Julian Kunkel), Leipzig, Germany, International Supercomputing Conference 2013, 2013-06-17
    BibTeX URL


people/externals/raul_torres.txt · Last modified: 2018-11-02 15:40 (external edit)