Worked on enhancing network interface card (NIC) discovery for HFI devices in the ofiwg/libfabric repository, focusing on improving reliability and determinism for performance-sensitive workloads. Developed a sysfs-based approach in C to collect NIC attributes, introducing a new function to populate device, bus, and link information. Integrated this data into the fi_getinfo workflow, ensuring each HFI unit’s information includes detailed NIC attributes. Added PCI-address based filtering to honor user-provided hints, returning appropriate error codes when no matches are found. This work leveraged C programming, network programming, and system programming skills to enable more granular NIC selection and future tuning capabilities.