OVERLORD: Ultimate Scaling of DataLoader for Multi-Source Large Foundation Model Training. - Juntao Zhao; Qi Lu; Wei Jia; Borui Wan; Lei Zuo; Junda Feng; Jianyu Jiang; Yangrui Chen; Shuaishuai Cao; Jialing He; Kaihua Jiang; Yuanzhe Hu; et al. (CoRR, 2025)