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RAJA Performance Suite: Performance Portability Analysis with Caliper and Thicket
DescriptionMaintaining performant code in a world of fast-evolving computer architectures and programming models poses a significant challenge to scientists. Typically, benchmark codes are used to model some aspects of a large application code's performance, and are easier to build and run. Such benchmarks can help assess the effects of code or algorithm changes, system updates, and new hardware. However, most performance benchmarks are not written using a wide range of GPU programming models. The RAJA Performance Suite provides a comprehensive set of computational kernels implemented in a variety of programming models. We integrated the performance measurement and analysis tools Caliper and Thicket into the RAJAPerf to facilitate performance comparison across kernel implementations and architectures. This paper describes the RAJAPerf, performance metrics that can be collected, and experimental analysis with case studies.
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