Federated Learning Framework for Scalable AI in Heterogeneous HPC and Cloud Environments. - Sangam Ghimire; Paribartan Timalsina; Nirjal Bhurtel; Bishal Neupane; Bigyan Byanju Shrestha; Subarna Bhattarai; Prajwal Gaire; Jessica Thapa; Sudan Jha (CoRR, 2025)