Speaker
Description
As High Energy Physics experiments transition toward the High-Luminosity LHC era, the demand for flexible and high-performance simulation software has become increasingly critical. This talk presents the recent evolution of Gaussino—an experiment-independent simulation framework built upon the Gaudi software stack—and its deployment as the core of the new LHCb simulation infrastructure. We describe core architectural advancements in Gaussino, including a significant restructuring of components and interfaces that now facilitates the seamless integration of Matrix Element generators such as Powheg, MadGraph, and Pythia. We will also report on the progress of integrating and testing AdePT, a component designed to offload detector simulations to GPUs, addressing the industry-wide shift toward heterogeneous computing. Finally, we present the operational experience of migrating the LHCb experiment from its legacy Gauss software to the new "Gauss-on-Gaussino" architecture. This includes the deployment and commissioning of the framework within the LHCb distributed production system, the validation of physics reliability for the upcoming Sim11 campaign, and the steps taken to ensure functional parity with current production standards. This evolution not only reduces long-term maintenance costs but also paves the way for other HEP experiments to adopt Gaussino, fostering collaborative software development and sharing across the global HEP community.
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