TLDR Tech / Hardware
Nvidia lays out what a RISC-V CPU needs to run CUDA and join NVLink Fusion
At Hot Chips 2026, Nvidia detailed the requirements a RISC-V CPU must meet to become a full host processor for its CUDA and NVLink Fusion platforms, alongside its existing x86 and Arm support. For CUDA, Nvidia points to RVA23 profile compliance and the RISC-V Boot and Runtime Services spec to guarantee software binary compatibility across different RISC-V chips, plus hardware-level PCIe I/O coherence and peer-to-peer GPU communication so data can move directly between host and device memory without unnecessary cache flushes or extra copies.
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