PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Cosmic-Ray Physics (Indirect, CRI)
Comparison and efficiency of GPU accelerated optical light propagation in CORSIKA~8
 CORSIKA 8 Collaboration, J.M. Alameddine, J. Albrecht, J. Alvarez-Muniz, J. Ammerman-Yebra, L. Arrabito, J. Augscheller, A.A. Alves Jr., D. Baack*, K. Bernlöhr, M. Bleicher, A. Coleman, H. Dembinski, D. Elsässer, R. Engel, A. Ferrari, C. Gaudu, C. Glaser, D. Heck, F. Hu, T. Huege, K.H. Kampert, N. Karastathis, U.A. Latif, H. Mei, L. Nellen, T. Pierog, R. Prechelt, M. Reininghaus, W. Rhode, F. Riehn, M. Sackel, P. Sala, P. Sampathkumar, A. Sandrock, J. Soedingrekso, R. Ulrich, D. Xu and E. Zaset al. (click to show)
Full text: pdf
Pre-published on: July 25, 2023
Published on:
AI accelerators have proliferated in data centers in recent years and are now almost ubiquitous. In addition, their computational power and, most importantly, their energy efficiency are up to orders of magnitude higher than that of traditional computing. Over the last years, various methods and optimizations have been tested to use these hybrid systems for simulations in the context of astroparticle physics utilizing CORSIKA. The main focus of this talk is the propagation of optical, i.e. fluorescence and Cherenkov, photons through low density inhomogeneous media in the context of the next generation CORSIKA8 simulation framework. Different techniques used and approximations, e.g. the atmospheric model, tested during the development will be presented. The trade-off between performance and precision allows the experiment to achieve its physical precision limited to the real resolution of the experiment and not invest power and time in vanishing precision gains. The additional comparison of classical CPU-based simulations with the new methods validates these methods and allows evaluation against a known baseline.
DOI: https://doi.org/10.22323/1.444.0417
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.