Performance portability for the CMS Reconstruction with Alpaka

Journal of Physics Conference Series, vol. 2438, pp. 012058

Abstract

Abstract For CMS, Heterogeneous Computing is a powerful tool to face the computational challenges posed by the upgrades of the LHC, and will be used in production at the High Level Trigger during Run 3. In principle, to offload the computational work on non-CPU resources, while retaining their performance, different implementations of the same code are required. This would introduce code-duplication which is not sustainable in terms of maintainability and testability of the software. Performance portability libraries allow to write code once and run it on different architectures with close-to-native performance. The CMS experiment is evaluating performance portability libraries for the near term future.

Authors 7

1. Andrea Bocci

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin, Switzerland

2. Angéla Czirkos

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin, Switzerland

3. Antonio Di Pilato

   Center for Advanced Systems Understanding

   Affiliation as printed

   CASUS, Center for Advanced Systems Understanding, Görlitz, Germany

4. Felice Pantaleo

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin, Switzerland

5. Gabrielle Hugo

   European Organization for Nuclear Research

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin, Switzerland

6. M. J. Kortelainen

   Fermi National Accelerator Laboratory

   Affiliation as printed

   Fermilab, Fermi National Accelerator Laboratory, Batavia, IL, USA

7. W. Redjeb corresponding Aachen III. Physikalisches Institut A

   European Organization for Nuclear Research · RWTH Aachen University

   Affiliation as printed

   CERN, European Organization for Nuclear Research, Meyrin, Switzerland

   RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany