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GPU accelerated optical light propagation in CORSIKA 8

Baack, Dominik; Reininghaus, Maximilian 1; Alameddine, Jean-Marco; Albrecht, Johannes; Alvarez-Muniz, Jaime; Jr., Antonio Augusto Alves 1; Arrabito, Luisa; Bernlöhr, Konrad; Bleicher, Marcus; BREGEON, Johan; Carrere, Matthieu; Dembinski, Hans; Elfner, Hannah; Elsässer, Dominik; Engel, Ralph 1; Hu, Fan; Fedynitch, Anatoli; Heck, Dieter 1; Huege, Tim 1; ... mehr


Optical photons, created from fluorescence or Cherenkov emission in atmospheric cascades induced
through high energetic cosmic rays are of major interest for several experiments. Experiments
like CTA require a significant amount of computing time and funds for the simulation with
Since individual photons don’t interact they can be simulated without any order. The traditional
sequential approach is simple but leads to reduced utilization of modern hardware infrastructure.
The calculations done on each photon have low complexity, compared to the other aspects of the
simulation. This, as well as the fact that, besides information about the photon itself, nearly no
additional data is needed, favors a data-parallel approach in which several photons are propagated
concurrently. The new CORSIKA 8 framework enables the implementation and verification of
these methods.
With the use of dedicated high parallel acceleration hardware like GPUs the possible benefits with
this data-parallel approach are even higher.

Verlagsausgabe §
DOI: 10.5445/IR/1000138557
Veröffentlicht am 06.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 18.03.2022
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000138557
HGF-Programm 51.13.03 (POF IV, LK 01) Kosmische Strahlung Auger
Erschienen in Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021), Ed.: A. Kappes
Veranstaltung 37th International Cosmic Ray Conference (ICRC 2021), Online, 12.07.2021 – 23.07.2021
Verlag Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Seiten Art.-Nr.: 705
Serie Proceedings of Science / International School for Advanced Studies ; 395
Vorab online veröffentlicht am 30.07.2021
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