Foteini Strati, Zhendong Zhang, George Manos, Ixeia Sánchez Périz, Qinghao Hu, Tiancheng Chen, Berk Buzcu, Song Han, Pamela Delgado, Ana Klimovic: Sailor: Automating Distributed Training over Dynamic, Heterogeneous, and Geo-distributed Clusters. Zenodo 2025