Now showing items 1-9 of 9

  • Detailed performance analysis using coarse grain sampling 

    Servat, Harald; Llort Sánchez, Germán; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Springer, 2014)
    Conference report
    Restricted access - publisher's policy
    Performance evaluation tools enable analysts to shed light on how applications behave both from a general point of view and at concrete execution points, but cannot provide detailed information beyond the monitored regions ...
  • Identifying code phases using piece-wise linear regressions 

    Servat, Harald; Llort Sánchez, Germán; González García, Juan; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Node-level performance is one of the factors that may limit applications from reaching the supercomputers' peak performance. Studying node-level performance and attributing it to the source code results into valuable insight ...
  • Intelligent instrumentation techniques to improve the traces information-volume ratio 

    Llort Sánchez, Germán (Universitat Politècnica de Catalunya, 2015-11-03)
    Doctoral thesis
    Open Access
    With ever more powerful machines being constantly deployed, it is crucial to manage the computational resources efficiently. This is important both from the point of view of the individual user, who expects fast results; ...
  • On-line detection of large-scale parallel application's structure 

    Llort Sánchez, Germán; González García, Juan; Servat, Harald; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2010)
    Conference report
    Restricted access - publisher's policy
    With larger and larger systems being constantly deployed, trace-based performance analysis of parallel applications has become a daunting task. Even if the amount of performance data gathered per single process is ...
  • On the instrumentation of OpenMP and OmpSs Tasking constructs 

    Servat, Harald; Teruel, Xavier; Llort Sánchez, Germán; Duran González, Alejandro; Giménez, J.; Martorell Bofill, Xavier; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José (Springer, 2012)
    Conference report
    Open Access
    Parallelism has become more and more commonplace with the advent of the multicore processors. Although different parallel pro- gramming models have arisen to exploit the computing capabilities of such processors, ...
  • On the usefulness of object tracking techniques in performance analysis 

    Llort Sánchez, Germán; Servat, Harald; González García, Juan; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Association for Computing Machinery (ACM), 2013)
    Conference report
    Restricted access - publisher's policy
    Understanding the behavior of a parallel application is crucial if we are to tune it to achieve its maximum performance. Yet the behavior the application exhibits may change over time and depend on the actual execution ...
  • Studying performance changes with tracking analysis 

    Llort Sánchez, Germán; Servat, Harald; Gonzalez Garcia, Juan; Giménez Lucas, Judit; Labarta Mancho, Jesús José (2015)
    Part of book or chapter of book
    Restricted access - publisher's policy
    Numerical simulation and modelling using High Performance Computing has evolved into an established technique in academic and industrial research. At the same time, the High Performance Computing infrastructure is becoming ...
  • Trace spectral analysis toward dynamic levels of detail 

    Llort Sánchez, Germán; Casas Guix, Marc; Servat, Harald; Huck, Kevin A.; Giménez Lucas, Judit; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Conference report
    Restricted access - publisher's policy
    The emergence of Petascale systems has raised new challenges to performance analysis tools. Understanding every single detail of an execution is important to bridge the gap between the theoretical peak and the actual ...
  • Unveiling internal evolution of parallel application computation phases 

    Servat, Harald; Llort Sánchez, Germán; Giménez Lucas, Judit; Huck, Kevin A.; Labarta Mancho, Jesús José (Institute of Electrical and Electronics Engineers (IEEE), 2011)
    Conference report
    Restricted access - publisher's policy
    As access to supercomputing resources is becoming more and more commonplace, performance analysis tools are gaining importance in order to decrease the gap between the application performance and the supercomputers' peak ...