Zhen Xie Zhen Xie is a research associate in the Argonne Leadership Computing Facility (ALCF) at Argonne National Laboratory. Zhen was a postdoctoral researcher in the Department of Electrical Engineering and Computer Science at the University of California, Merced. His research interests include parallel algorithms and performance optimization, with a recent focus on high-performance computing for machine learning. Zhen has a Ph.D. in computer science from the Chinese Academy of Sciences in 2019.