NestPipe: Large-Scale Recommendation Training on 1,500+ Accelerators via Nested Pipelining. - Zhida Jiang; Zhaolong Xing; Huichao Chai; Tianxing Sun; Qiang Peng; Baopeng Yuan; Jiaxing Wang; Hua Du; Zhixin Wu; Xuemiao Li; Yikui Cao; Xinyu Liu; et al. (CoRR, 2026)