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Related Experiment Video

Updated: Sep 26, 2025

Author Spotlight: Enhancing Cryo-Electron Microscopy by Automated Data Collection and Analysis Techniques
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Pilot-job provisioning on grid resources: Collecting analysis and performance evaluation data.

Alexandre F Boyer1,2, Christophe Haen1, Federico Stagni1

  • 1European Organization for Nuclear Research, Meyrin, Switzerland.

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|April 18, 2022
PubMed
Summary

This study enhances the Pilot-Job system for CERN Large Hadron Collider (LHC) experiments using the DIRAC Site Director. Analysis of LHCbDIRAC data improved pilot-job submission rates and job throughput on grid resources.

Keywords:
DIRAC site directorGrid computingLHCbPilot-job

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Area of Science:

  • High-energy physics
  • Distributed computing
  • Grid computing

Background:

  • CERN Large Hadron Collider (LHC) experiments utilize the Pilot-Job paradigm for distributed computing.
  • DIRAC Site Director is a key Pilot-Job provisioning solution, primarily used by the LHCb experiment.

Purpose of the Study:

  • To analyze the DIRAC Site Director's mechanisms for Pilot-Job provisioning.
  • To improve Pilot-Job submission rates and job throughput on grid resources for LHC experiments.

Main Methods:

  • Collected 12 months of data from the LHCbDIRAC instance.
  • Extracted data from DIRAC databases and logs.
  • Analyzed the evolution of Pilot-Jobs/jobs, available grid slots, and jobs processed per Pilot-Job.

Main Results:

  • Demonstrated improvements in Pilot-Job submission rates.
  • Showcased enhanced job throughput on grid resources.
  • Provided insights into the performance of the DIRAC Site Director.

Conclusions:

  • The study successfully identified mechanisms to optimize Pilot-Job provisioning.
  • Contributions lead to more efficient utilization of grid and opportunistic computing resources for high-energy physics experiments.