Enabling one-sided communication semantics on ARM

In this paper, we present our work to enable optimized one-sided communication operations on the ARM v8 architecture using a high-performance InfiniBand network interconnect, as well as an evaluation of our implementation. For this study, we started with an OpenSHMEM implementation based on Open MPI/SHMEM, and combined it with the UCX framework and the XPMEM kernel extension for shared memory communication. UCX is a unified communication abstraction that provides high-performance communication services over a variety of network interconnects and shared memory technologies. The UCX, XPMEM, and OpenSHMEM components were specially ported for this work in order to enable efficient access to shared memory and RDMA network capabilities on ARM. To the best of our knowledge, this is the first investigation of one-sided communication semantics and OpenSHMEM on the ARM architecture combined with a high-performance InfiniBand network and XPMEM shared memory transport.