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Beatnik: A Novel Global Communication Mini-Application
DescriptionBeatnik is a novel open source mini-application that exercises the complex communication patterns often found in production codes but rarely found in benchmarks or mini-applications. It simulates 3D Raleigh-Taylor instabilities based on Pandya and Shkoller’s Z-Model formulation using the Cabana performance portability framework. This paper presents both the high-level design and important implementation details about Beatnik, along with four benchmark setups for evaluating different aspects of HPC communication system performance. Evaluation results demonstrate Beatnik's scalability on modern accelerator-based systems using weak and strong scaling tests up to 1024 GPUs, along with Beatnik's ability to expose communication challenges in modern systems and solver libraries.
