Streamlining LHCb's Upgrade Trigger System*

The triggerless readout of data corresponding to a 30 MHz event rate at the upgraded LHCb experiment together with a software-only High Level Trigger will enable the highest possible flexibility for trigger selections. During the first stage (HLT1), track reconstruction and vertex fitting for charged particles enable a broad and efficient selection process to reduce the event rate to 1 MHz. Tracking and vertexing at 30 MHz represents a significant computing challenge. LHCb utilizes the inherent parallelism of the triggering process to meet throughput requirements with GPUs. This implies a major change in software that has to be integrated with data aquisition and the second HLT stage. This talk gives an overview of efforts to streamline both processing stages to ensure consistency across architectures and avoid errors and duplication.