Worked on the TUM-DSE/doctor-cluster-config repository to enhance cluster infrastructure by focusing on system configuration and virtualization using Nix. Addressed configuration drift by removing NVIDIA-specific settings from the jamie host, ensuring alignment with the cluster’s baseline and improving stability. Subsequently, enabled hardware-assisted virtualization by introducing explicit IOMMU support through a new AMD IOMMU Nix module, integrating it into the module import system to facilitate VM passthrough and resource isolation. The work demonstrated a methodical approach to infrastructure management, emphasizing reproducibility and maintainability while leveraging Nix for declarative configuration and supporting evolving virtualization requirements within the cluster environment.