Work Project Report

The current LHCb detector uses both hardware and software for its High Level Trigger. The experiment will be upgraded around 2020, and as part of the upgrade, the Hardware Level Trigger will be removed, and as a consequence all events will be filtered solely on software. As an effect of this decision, and also due to the expected luminosity increase in Run 3, a big effort is being put into modernizing the software, targeting different architectures, rethinking design decisions and data formats. One possible solution is to use GPU architectures for the High Level Trigger 1, due to the highly parallel approach these allow us to apply. A project called “CUDA HLT 1” started with the aim of informally evaluate the consequences of incorporating GPUs in the early reconstruction process of LHCb.