Investigations of multi-socket high core count RISC-V for HPC workloads
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866910827954569216 |
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| author | Brown, Nick Day, Christopher |
| author_facet | Brown, Nick Day, Christopher |
| contents | Whilst RISC-V has become popular in fields such as embedded computing, it is yet to find mainstream success in High Performance Computing (HPC). However, the 64-core RISC-V Sophon SG2042 is a potential game changer as it provides a commodity available CPU with much higher core count than existing technologies. In this work we benchmark the SG2042 CPU hosted in an experimental, dual-socket, system to explore the performance properties of the CPU when running a common HPC benchmark suite across sockets. Earlier benchmarks found that, on the Milk-V Pioneer workstation, whilst the SG2042 performs well for compute bound codes, it struggles when pressure is placed on the memory subsystem. The performance results reported here confirm that, even on a different system, these memory performance limitations are still present and hence inherent in the CPU. However, a multi-socket configuration does enable the CPU to scale to a larger number of threads which, in the main, delivers an improvement in performance and-so this is a realistic system configuration for the HPC community. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_10320 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Investigations of multi-socket high core count RISC-V for HPC workloads Brown, Nick Day, Christopher Distributed, Parallel, and Cluster Computing Emerging Technologies Whilst RISC-V has become popular in fields such as embedded computing, it is yet to find mainstream success in High Performance Computing (HPC). However, the 64-core RISC-V Sophon SG2042 is a potential game changer as it provides a commodity available CPU with much higher core count than existing technologies. In this work we benchmark the SG2042 CPU hosted in an experimental, dual-socket, system to explore the performance properties of the CPU when running a common HPC benchmark suite across sockets. Earlier benchmarks found that, on the Milk-V Pioneer workstation, whilst the SG2042 performs well for compute bound codes, it struggles when pressure is placed on the memory subsystem. The performance results reported here confirm that, even on a different system, these memory performance limitations are still present and hence inherent in the CPU. However, a multi-socket configuration does enable the CPU to scale to a larger number of threads which, in the main, delivers an improvement in performance and-so this is a realistic system configuration for the HPC community. |
| title | Investigations of multi-socket high core count RISC-V for HPC workloads |
| topic | Distributed, Parallel, and Cluster Computing Emerging Technologies |
| url | https://arxiv.org/abs/2502.10320 |