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  1. 1021
    por Kruse, D F, Kruzelecki, K
    Publicado 2011
    “…CPU clock frequency is not likely to be increased significantly in the coming years, and data analysis speed can be improved by using more processors or buying new machines, only if one is willing to change the paradigm to a parallel one. …”
    Enlace del recurso
    Modular Software Performance Monitoring
  2. 1022
    por Graciani, R
    Publicado 2011
    “…The data used in the following sections is taken from either the WLCG accounting portal: https://www3.egee.cesga.es/gridsite/accounting/CESGA/egee_view.php, or from the LHCb DIRAC Accounting portal: http://lhcbweb.pic.es/DIRAC/LHCb-Production/visitor/systems/accountingPlots/job, in what respect usage of CPU resources. For the usage of the Storage resources snapshots of the situation as seen by the SLS sensors: https://sls.cern.ch/sls/service.php?…”
    Enlace del recurso
    LHCb Computing Resource usage in 2010
  3. 1023
    por Schaefer, D M
    Publicado 2012
    “…We describe a trigger monitoring frame- work for computing the costs of individual trigger algorithms such as data request rates and CPU consumption. This framework has been used to prepare the ATLAS trigger for data taking during increases of more than six orders of magnitude in the LHC luminosity and has been influential in guiding ATLAS Trigger computing upgrades.…”
    Enlace del recurso
    Rate Predictions and Trigger/DAQ Resource Monitoring in ATLAS
  4. 1024
    por Kretz, Moritz
    Publicado 2012
    “…Furthermore, the histogram fitting algorithm currently being employed on the Pixel Detector RODs is ported to a GPU architecture and optimized for parallel execution, increasing the performance of a previous implementation by a factor of~10. As an alternative, CPU based fitting methods are investigated for their practicability.…”
    Enlace del recurso
    Studies Concerning the ATLAS IBL Calibration Architecture
  5. 1025
    “…Indeed, the regional secondary schools host some 80.000 computers (running a Linux/Debian flavour called "Linex") with abundant spare CPU cycles. PRC is helping to put such large potential at the disposal of a number of scientific projects. …”
    Enlace del recurso
    Public Resource Computing projects at Extremadura
  6. 1026
    “…The evolution of the resources for CPU, disk and tape in the Iberian Tier-1 and Tier-2s is summarized. …”
    Enlace del recurso
    Lessons learned from the ATLAS performance studies of the Iberian Cloud for the first LHC running period.
  7. 1027
    por Washbrook, A
    Publicado 2013
    “…This is allowing the tracking algorithms to be redesigned to make more optimal use of the CPU resources available and integrate new detector systems being added to ATLAS for post-shutdown running. …”
    Enlace del recurso
    Enlace del recurso
    The Performance and Development of the ATLAS Inner Detector Trigger
  8. 1028
    por Carminati, F, Betev, L, Grigoras, A
    Publicado 2016
    “…It is now a fully operational international entity, encompassing several hundred computing sites on all continents and giving access to hundreds of thousands of CPU (central processing unit) cores and hundreds of petabytes of storage, all connected by robust national and international scientific networks. …”
    Enlace del recurso
    International School of Physics "Enrico Fermi" : Summer Courses 2014
  9. 1029
    “…We present the issues related to emulating this system on a general-purpose CPU platform, using ATLAS computing Grid resources, and the solutions developed in order to mitigate these problems and allow the studies required to support the system design, construction and installation.…”
    Enlace del recurso
    ATLAS FTK challenge: simulation of a billion-fold hardware parallelism
  10. 1030
    por Dungs, Kevin
    Publicado 2015
    “…Thanks to an upgraded computing farm, more CPU time can be spent on reconstruction. Through removal of simplifications and other optimisations, the software-based inefficiency is reduced by $(8.43 \pm 0.30)\,\%$ for Run~II. …”
    Enlace del recurso
    Optimisation of the software-based muon identification at the LHCb experiment
  11. 1031
    “…It achieves high utilization by combining dynamic job definition based on many criterias, such as input and output size, memory requirements and CPU consumption with manageable scheduling policies and by supporting different kind of computational resources, such as GRID, clouds, supercomputers and volunteering computers. …”
    Enlace del recurso
    ATLAS production system
  12. 1032
    por Dias, Flavia
    Publicado 2016
    “…Producing these with the full GEANT4 detector simulation is highly CPU intensive. As a very detailed detector simulation is not always required, fast simulation tools have been developed to reduce the calorimeter simulation time by a few orders of magnitude. …”
    Enlace del recurso
    The new ATLAS Fast Calorimeter Simulation
  13. 1033
    por De Cian, Michel
    Publicado 2016
    “…However, the ever increasing need for a higher throughput and the move to parallelism in the CPU architectures in the last years necessitated the use of vectorization techniques to achieve the desired speed and a more extensive use of machine learning to veto bad events early on. …”
    Enlace del recurso
    Enlace del recurso
    Machine learning and parallelism in the reconstruction of LHCb and its upgrade
  14. 1034
    por Haas, Andy
    Publicado 2016
    “…For some physics processes studied with the ATLAS detector, a more accurate simulation in some respects can be achieved by including real data into simulated events, with substantial potential improvements in the CPU, disk space, and memory usage of the standard simulation configuration, at the cost of significant database and networking challenges. …”
    Enlace del recurso
    ATLAS Simulation using Real Data: Embedding and Overlay
  15. 1035
    por Dias, Flavia
    Publicado 2016
    “…A GEANT4 based detailed simulation of the ATLAS calorimeter systems is highly CPU intensive and such resolution is often unnecessary. …”
    Enlace del recurso
    Enlace del recurso
    The new ATLAS Fast Calorimeter Simulation
  16. 1036
    por Marti-Garcia, Salvador
    Publicado 2016
    “…This represents a considerable numerical challenge in terms of both CPU time and precision. During Run-2, a mechanical distortion of the IBL staves up to 20um has been observed during data-taking, plus other short time scale movements. …”
    Enlace del recurso
    Alignment of the ATLAS Inner Detector
  17. 1037
    por Haas, Andrew
    Publicado 2017
    “…For some physics processes studied with the ATLAS detector, a more accurate simulation in some respects can be achieved by including real data into simulated events, with substantial potential improvements in the CPU, disk space, and memory usage of the standard simulation configuration, at the cost of significant database and networking challenges. …”
    Enlace del recurso
    Enlace del recurso
    ATLAS simulation using real data: Embedding and overlay
  18. 1038
    por Filipcic, Andrej
    Publicado 2017
    “…These two centers have been the pilots for ATLAS Monte Carlo Simulation in SCEAPI and have been providing CPU power since fall 2015.…”
    Enlace del recurso
    Enlace del recurso
    Integration of the Chinese HPC Grid in ATLAS Distributed Computing
  19. 1039
    por Tarkov, Mikhail S
    Publicado 2014
    “…An important task is to optimize the use of the equipment (including the CPU cache) of parallel computers. Along with parallelizing information processing, it is essential to ensure the processing reliability by the relevant organization of systems of concurrent interacting processes. …”
    Enlace del recurso
    Parallel programming: practical aspects, models and current limitations
  20. 1040
    “…These studies have been performed on the WLCG and Kurchatov Institute’s Data Processing Center, including Tier-1 GRID site and supercomputer as well. We also analyze the CPU efficiency during these studies for different computing facilities. …”
    Enlace del recurso
    High performance computing system in the framework of the Higgs boson studies
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