Efficient Personalized and Non-Personalized Alltoall Communication for Modern Multi-HCA GPU-Based Clusters K. Suresh, A. Paniraja Guptha, B. Michalowicz, B. Ramesh, M. Abduljabbar, A. Shafi, H. Subramoni, D. Panda 29th IEEE International Conference on High Performance Computing, Data, and Analytics, Dec 2022.