Speaker
Alessandro Scarabotto
(Technische Universitaet Dortmund (DE))
Description
Since 2022, the LHCb detector is taking data with a full software trigger at the LHC proton-proton collision rate, implemented in GPUs in the first stage and CPUs in the second stage. This setup allows to perform the alignment & calibration online and to perform physics analyses directly on the output of the online reconstruction, following the real-time analysis paradigm. This talk will give a detailed overview of the LHCb trigger implementation and its underlying computing infrastructure, discuss challenges of using a heterogeneous architecture and report its performance in nominal data taking conditions during 2024 after two commissioning years.
Primary author
Alessandro Scarabotto
(Technische Universitaet Dortmund (DE))
