Efficient Personalized and Non-Personalized Alltoall Communication for Modern Multi-HCA GPU-Based Clusters. - Kaushik Kandadi Suresh; Akshay Paniraja Guptha; Benjamin Michalowicz; Bharath Ramesh 005; Mustafa Abduljabbar; Aamir Shafi; Hari Subramoni; Dhabaleswar K. Panda 001 (HIPC, 2022)