PoS - Proceedings of Science
Volume 414 - 41st International Conference on High Energy physics (ICHEP2022) - Computing and Data Handling
QCD tree amplitudes on modern GPUs: A case study for novel event generators
E. Bothmann*, J. Isaacson, M. Knobbe, S. Höche and W. Giele
Full text: pdf
Pre-published on: November 18, 2022
Published on: June 15, 2023
For more than a decade the current generation of CPU-based matrix element generators has provided hard scattering events with excellent flexibility and good efficiency.
However, they are a bottleneck of current Monte Carlo event generator toolchains, and with the advent of the HL-LHC and more demanding precision requirements, faster matrix elements are needed, especially at intermediate to large jet multiplicities.
We present first results of the new BlockGen family of matrix element algorithms, featuring GPU support and novel color treatments, and discuss the best choice to deliver the performance needed for the next generation of accelerated matrix element generators.
DOI: https://doi.org/10.22323/1.414.0222
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