Comparing OpenMP Implementations With Applications Across A64FX Platforms

Benjamin Michalowicz, Eric Raut, Yan Kang, Tony Curtis, Barbara Chapman, Dossay Oryspayev

The development of the A64FX processor by Fujitsu has created a massive innovation in High-Performance Computing and the birth of Fugaku: the current world's fastest supercomputer. A variety of tools are used to analyze the run-times and performances of several applications, and in particular, how these applications scale on the A64FX processor. We examine the performance and behavior of applications through OpenMP scaling and how their performance differs across different compilers on the new Ookami cluster at Stony Brook University as well as the Fugaku supercomputer at RIKEN in Japan.

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