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The Sophon SG2042 is the world's first commodity 64-core RISC-V CPU for highperformance workloads and an important question is whether the SG2042 has thepotential to encourage the HPC community to embrace RISC-V.  In this paper we undertaking a performance exploration of the SG2042 againstexisting RISC-V hardware and high performance x86 CPUs in use by modernsupercomputers. Leveraging the RAJAPerf benchmarking suite, we discover that onaverage, the SG2042 delivers, per core, between five and ten times theperformance compared to the nearest widely available RISC-V hardware. We foundthat, on average, the x86 high performance CPUs under test outperform theSG2042 by between four and eight times for multi-threaded workloads, althoughsome individual kernels do perform faster on the SG2042. The result of thiswork is a performance study that not only contrasts this new RISC-V CPU againstexisting technologies, but furthermore shares performance best practice.

Is RISC-V ready for HPC prime-time: Evaluating the 64-core Sophon SG2042 RISC-V CPU