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Parallel Version of CORSIKA Code with Cherenkov Option for SPHERE-3 Project

M. D. Ziva, V. I. Galkin, E. A. Bonvech, O. V. Cherkesova, D. V. Chernov, V. A. Ivanov, T. A. Kolodkin, N. O. Ovcharenko, D. A. Podgrudkov, T. M. Roganova

TL;DR

A multithread version of the code for the generation of extensive air shower events with Cherenkov light is developed using Lomonosov-2 supercomputing facility for the generation of extensive air shower events with Cherenkov light.

Abstract

We use Lomonosov-2 supercomputing facility for the generation of extensive air shower events with Cherenkov light which is a rather time consuming procedure. At primary energies slightly below 100 PeV a substantial part of events are killed before reaching their end while exceeding the queue time limit. The fact compelled us to develop a multithread version of the code. We report here the main features of our development as well as some evidence of its efficiency.

Parallel Version of CORSIKA Code with Cherenkov Option for SPHERE-3 Project

TL;DR

A multithread version of the code for the generation of extensive air shower events with Cherenkov light is developed using Lomonosov-2 supercomputing facility for the generation of extensive air shower events with Cherenkov light.

Abstract

We use Lomonosov-2 supercomputing facility for the generation of extensive air shower events with Cherenkov light which is a rather time consuming procedure. At primary energies slightly below 100 PeV a substantial part of events are killed before reaching their end while exceeding the queue time limit. The fact compelled us to develop a multithread version of the code. We report here the main features of our development as well as some evidence of its efficiency.
Paper Structure (9 sections, 1 equation, 5 figures)

This paper contains 9 sections, 1 equation, 5 figures.

Table of Contents

  1. Introduction
  2. Initial modification of CORSIKA
  3. Multithreaded version in outline
  4. Stack distribution algorithm
  5. Testing Results
  6. Test platform configuration and experimental parameters
  7. Experimental results: performance and physical validation
  8. Conclusions
  9. Acknoweledgements

Figures (5)

  • Figure 1: Parallel CORSIKA operation scheme
  • Figure 2: Number of primary particle interactions prior to reaching the 2% energy threshold.
  • Figure 3: Average calculation time for one event in two versions of the program on a local server.
  • Figure 4: Average speedup for calculating one event
  • Figure 5: Comparison of the average spatial distribution functions of Cherenkov photons from a primary proton in two versions of the program.