From Zero to Hero: Conquering the Arm Neoverse

Arm technology has increasingly become a compelling choice for HPC due to its promise of higher efficiency, density, scalability, and broad ecosystem of software. Arm expansion in the datacentre started in 2018 with Arm Neoverse, a set of infrastructure CPU IPs designed for high-end computing. The Arm-based Fugaku supercomputer, first of its kind implementing Arm SVE instruction set, entered the Top 500 in June 2020 scoring at the top and retaining a leadership position over the years not only in HPL but also for HPCG (where it is still unbeaten). This event has been a wake-up call for the HPC community. The datacentre and HPC space have long been dominated by x86 CPUs. There is a growing interest in diversifying and exploring new compute architectures to re-create a vibrant and diverse ecosystem as it was more than a decade ago. Arm technology is at the forefront of this wave of change. This tutorial welcomes scientists and engineers interested in running a variety of workloads on a Arm-based system, either on-premises or in the cloud. The tutorial will guide the attendee through compile, execute, profile and optimize codes for Arm to demystify those claims that changing CPU architecture is hard.

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Contributors:

• Simon Mc-Intosh Smith