Re: RISC-V -- are we ready for more, and what do we need to do it?

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On Sat, Jan 7, 2023 at 2:42 AM Jeff Law <jeffreyalaw@xxxxxxxxx> wrote:
>
>
>
> On 1/6/23 16:19, Jun Aruga (he / him) wrote:
> > I posted the same article on Fedora Discussion.[1] However let me
> > share it again on the devel@ to tell it to many people.
> >
> > This is interesting news about RISC-V this week. Perhaps, it’s time to
> > prepare to add the RISC-V CPU to the Koji build system?
> >
> I think the big question in this space is access to suitable hardware.
> What's out there right now is scarce and woefully under-powered.

Summary from multi-year discussions/feedback on this:
- We don't have proper hardware to put into the data center that holds
servers used by Fedora infrastructure.
- Not enough single and multi thread performance to avoid large impact
to Fedora development.

Other than that Fedora/RISCV 37 is the first Fedora version to be
built fully natively using 20+ SiFive HiFive Unmatched boards. On a
good day we can keep up (if the builds aren't too large, e.g. GCC). We
don't really run Bodhi thus once package is built it's immediately
available. We run a very minimal setup right now (ideas to expand
that).

Another news is that Fedora/RISCV Koji server (
http://fedora.riscv.rocks/koji/ ) just moved into Fedora infra owned
server. We are about to start work on Fedora 38/Rawhide.

2023 is potentially a transition year. Ventana Veyron V1 Development
Platform looks good (I assume it has BMC). SOPHGO SG2042 should also
show up with 64-core @ 2.0GHz (T-HEAD C910) in early 2023 (?) I am not
yet convinced about their upstream support efforts (TBD).

If that's not available with proper support or/and in proper
quantities the plan would be to continue expanding Fedora/RISCV
builders with JH7110 (upstreaming ongoing for kernel/OpenSBI/U-Boot).
Mainly PINE64 Star64 and VisionFive V2 boards. SiFive/Intel Pro P550
(Horse Creek) and that also has OCP DC-SCM for BMC card. Sipeed TH1520
based cluster board (7 modules, BMC incl, T-HEAD C910, up to 16G of
RAM or 4G/core).

>
> My plan is to set up and maintain a riscv64 shadow builder as soon as
> possible after our Veyron-v1 bring-up.  Ideally that will help forge a
> path to official Fedora builds as hardware availability expands.

If there is away to acquire Veyron V1 Development Platform I would be
interested to talk, and figure out what that would take. Such hardware
would be a game charger, and I do trust Ventana regarding upstream
support :)

Cheers,
david

>
>
> jeff
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