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arXiv · 2608.14799

Porting and Benchmarking Chapel on Emerging RISC-V Hardware: an HPC Viability Study

Ian Henriksen·Chris Taylor·Patrick Diehl·Jade Abraham·Palmer Cox·Bradford L. Chamberlain·Stephen L. Olivier
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Abstract

The Chapel programming language recently added support for the RISC-V architecture. Here we discuss what changes were needed for Chapel to work on RISC-V as well as lessons learned from the porting process. We use some of Chapel's extensive benchmark suite to gain further insight into the suitability of the RISC-V architecture for future HPC use. We compare performance on SiFive P550 and Unmatched boards and a Sophon SG2042 with a variety of other recent HPC CPU platforms. Various portability and performance anomalies arose on different architectures and will be discussed. While the RISC-V machines represent smaller preliminary offerings and not HPC-class hardware, these results still provide hope that RISC-V hardware can become viable for HPC in the near future.

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Ian Henriksen, Chris Taylor, Patrick Diehl, Jade Abraham, Palmer Cox, Bradford L. Chamberlain, Stephen L. Olivier. 2026-08-14. Porting and Benchmarking Chapel on Emerging RISC-V Hardware: an HPC Viability Study. https://arxiv.org/abs/2608.14799

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