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> state of specs (RVA23/RVB23) One of which doesn't require vector. I mean.. > has already caught up with x86-64 and arm64. What's your actual measure for t

> state of specs (RVA23/RVB23) One of which doesn't require vector. I mean.. > has already caught up with x86-64 and arm64. What's your actual measure for this? > And this is unlikely to change. Is anything is being manufactured in volume with actual specs I can look at? > much innovation in the ISA space since the 80s. There's nothing to suggest there'll suddenly be. If what you're suggesting is true then that's what suggests there would be. My pessimism exists for both. > in direct contrast to what has been the norm in proprietary ISAs That's because they have actual customers in volume.

brucehoult 2y ago
> What's your actual measure for this? Features e.g. hypervisor, cache control, security ... > Is anything is being manufactured in volume with actual specs I can look at? RVA23 was just ( I assume) ratified a few days ago on August 29, RVB23 is due December 26th, so actual chips in production, on boards you can buy, will be some time away. There are several SoCs already out implementing RVA22+V. The CanMV-K230 board is a bit limited with only single core and 512 MB RAM and is only slightly cheaper than an 8 core, 256 bit vectors, 4 GB board with the K1 SoC such as the Banana Pi BPI-F3, which is also available with 8 or 16 GB RAM. There are also already quite a number of other options to get the same SoC: Sipeed Lichee Pi 3A (or compute module 3A), Milk-V Jupiter (mini-ITX) or laptops including the MuseBook and DC-Roma II. Those are all just a bit faster than a Raspberry Pi 3 or Zero 2 -- other than having more than 4 cores and much more than 0.5 or 1 GB RAM -- but several faster SoCs are coming soon. First the Eswin EIC7700 with 4 faster (~A75) cores but no V extension, coming on several boards Real Soon Now, then next year the SG2380 with 16 RVA22+V cores that should come in faster than the A76 in the Pi 5, Rock 5, Orange Pi 5.

brucehoult 2y ago

> What's your actual measure for this? Features e.g. hypervisor, cache control, security ... > Is anything is being manufactured in volume with actual specs I can look at? RVA23 was just ( I assume) ratified a few days ago on August 29, RVB23 is due December 26th, so actual chips in production, on boards you can buy, will be some time away. There are several SoCs already out implementing RVA22+V. The CanMV-K230 board is a bit limited with only single core and 512 MB RAM and is only slightly cheaper than an 8 core, 256 bit vectors, 4 GB board with the K1 SoC such as the Banana Pi BPI-F3, which is also available with 8 or 16 GB RAM. There are also already quite a number of other options to get the same SoC: Sipeed Lichee Pi 3A (or compute module 3A), Milk-V Jupiter (mini-ITX) or laptops including the MuseBook and DC-Roma II. Those are all just a bit faster than a Raspberry Pi 3 or Zero 2 -- other than having more than 4 cores and much more than 0.5 or 1 GB RAM -- but several faster SoCs are coming soon. First the Eswin EIC7700 with 4 faster (~A75) cores but no V extension, coming on several boards Real Soon Now, then next year the SG2380 with 16 RVA22+V cores that should come in faster than the A76 in the Pi 5, Rock 5, Orange Pi 5.