Hanqing Zhu Zhenyu Zhang 0015 Wenyan Cong Xi Liu 0011 Sem Park Vikas Chandra Bo Long David Z. Pan Zhangyang Wang Jinwon Lee APOLLO: SGD-like Memory, AdamW-level Performance. 2025 MLSys https://openreview.net/forum?id=mJrPkdcZDj https://proceedings.mlsys.org/paper_files/paper/2025/hash/437bc4ccafd3fc6d4289bd10940be42b-Abstract-Conference.html conf/mlsys/2025 db/conf/mlsys/mlsys2025.html#Zhu0CLPCLPWL25