traccc: GPU track reconstruction library for HEP experiments

Paul Gessinger; Heather M. Gray; Attila Krasznahorkay; Charles Leggett; Joana Niermann; Andreas Salzburger; Stephen Nicholas Swatman; Beomki Yeo

arXiv · 2505.22822

traccc: GPU track reconstruction library for HEP experiments

Paul Gessinger·Heather M. Gray·Attila Krasznahorkay·Charles Leggett·Joana Niermann·Andreas Salzburger·Stephen Nicholas Swatman·Beomki Yeo

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Abstract

We present the current development status and progress of traccc, a GPU track reconstruction library developed in the context of the A Common Tracking Software (ACTS) project. traccc implements tracking algorithms used in high energy physics (HEP) experiments, including the Kalman filter based track finding and fitting. We benchmark the software with data simulated by Geant4 to measure the physics and computing performance. We show that the physics performance for GPU and CPU are very close. We also show that the GPUs can achieve higher computational performance than the CPU for sufficiently large events.

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Paul Gessinger, Heather M. Gray, Attila Krasznahorkay, Charles Leggett, Joana Niermann, Andreas Salzburger, Stephen Nicholas Swatman, Beomki Yeo. 2025-05-28. traccc: GPU track reconstruction library for HEP experiments. https://arxiv.org/abs/2505.22822

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