Nvidia quietly adopts RISC-V and replaces proprietary microcontrollers.
    • kata1yst@sh.itjust.worksEnglish
      43·
      27 days ago

      They’ve been shipping them in every GPU for years.

      These things are now managed by 10 to 40 custom RISC-V cores developed by Nvidia, depending on chip complexity. Nvidia started to replace its proprietary microcontrollers with RISC-V-based microcontroller cores in 2015, and by now, virtually all of its MCU cores are RISC-V-based, according to an Nvidia slide demonstrated at the RISC-V Summit.

      • Vik@lemmy.worldEnglish
        16·
        27 days ago

        same for AMD graphics since 2019. I wouldn’t be surprised if Intel were doing the same with Arc too, though I haven’t looked into that yet.

        • Janovich@lemmy.worldEnglish
          9·
          27 days ago

          Small RISC-V cores are weirdly all over the place. I think NXP and some others have a RISC-V core inside some of their ARM cores as their security coprocessors and other peripherals. The architecture is getting around it’s just not hitting much toward the application processor yet. It’s getting there but running a full on PC is such a complex task over micros or special purpose devices.

          • tekato@lemmy.worldEnglish
            4·
            27 days ago

            It’s getting there but running a full on PC is such a complex task over micros or special purpose devices.

            Design application ready CPUs are hard, but not really for these companies. The main issue was the need for a standard, given how many optional extensions are available for RISC-V. The RVA profiles fix this problem by giving a set of required extensions to be user-mode application ready, and they have been a thing for a while. However, these were lacking one important capability for modern applications: vector extensions. RISC-V already had SIMD support (similar to what x86 has), but the vector extension is so much better there’s really no need to even bother with it except with some microcontrollers .

            The RVA23 profile, ratified 4 days ago, addresses this by adding the vector extension to the list of required extensions for an application ready CPU. This should be enough for running modern applications, so maybe we’ll see some nice stuff in the next 1-2 years.

          • Vik@lemmy.worldEnglish
            3·
            27 days ago

            Absolutely. They’ve been getting really popular in wearables (particularly from Chinese brands).

            Several SBC vendors are including rv clusters in ARM based SoCs (which I believe is partially related to what you mentioned) for development purposes.

            I even have a little rv powered ssoldering iron 😊