Evaluating DAOS Storage on ARM64 Clients.

High performance scale-out storage systems are a critical component of modern HPC and AI clusters. This paper investigates the suitability of the Distributed Asynchronous Object Storage (DAOS) storage stack for ARM64 platforms. DAOS is an open source scale-out storage system that has been designed from the ground up to support Storage Class Memory (SCM) and NVMe storage in user space. It has originally been developed for x86_64. But with increasing popularity of ARM64 based HPC clusters, the DAOS community has also started to validate DAOS on ARM64. We report on early experiences in running DAOS on HPC clusters with A64FX nodes and with ThunderX2 nodes, using EDR InfiniBand with libfabric/verbs as the HPC interconnect.