Development of the ATLAS muon trigger system on multi-threaded software framework
2019 November 14
2019 November 21
The ATLAS muon trigger system consists of a hardware-based and a software-based trigger, and it can efficiently select events containing muons in the final state for physics analyses. The ATLAS experiment plans to restart the Run3 data-taking in 2021 in higher luminosities. In the higher luminosities, there is new challenge that wall time of reconstructing events increases on the software system. In order to cope with the challenge, multi-threaded software framework has been developed to reduce memory requirement because CPUs have increased core counts and decreased available memory per core. As a part of the major upgrade in the ATLAS software, we have been developing multi-threaded software framework of the muon trigger system, and validated the execution on single thread. The development and validation result will be outlined.