Jiali Li Bogdan Nicolae Justin M. Wozniak George Bosilca Understanding Scalability and Fine-Grain Parallelism of Synchronous Data Parallel Training. 1-8 2019 MLHPC@SC https://doi.org/10.1109/MLHPC49564.2019.00006 conf/sc/2019mlhpc db/conf/sc/mlhpc2019.html#LiNWB19