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RISC-V SBC VisionFive 2 Officially Shipped

starfivetech.com

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Re: RISC-V SBC VisionFive 2 Officially Shipped

#13
Upstreasming status: https://rvspace.org/en/new-page/JH7110_Upstream_Plan

StarFive Tech. have been upstreaming on kernel, OpenSBI and U-Boot from several weeks now. Of course this is still weeks/months away (if not more, for all the features) from landing in stable releases. Even more for distributions to pick those up.

Re: RISC-V SBC VisionFive 2 Officially Shipped

#16
post #12

Any performance comparisons with Raspberry Pi boards? How does this RISC-V CPU stack up against them?

Not great; VisionFive appears to be significantly less performant. https://browser.geekbench.com/v5/cpu/compare/17159543?baseli...

There are a few where it does win though -- I wonder what characteristics favor VisionFive in those?

Re: RISC-V SBC VisionFive 2 Officially Shipped

#18

Any performance comparisons with Raspberry Pi boards? How does this RISC-V CPU stack up against them?

CPU slower than 4 as said, but even Jetson Nano is slower that the mad performance per watt of the 4.

BUT the GPU is apparently better which would make this THE SBC.

I will test my 3D MMO engine and give exactly what is what once I receive mine, should be a couple of days.

The Raspberry GPU has a serious cache problem, it can't render a triangle at 60FPS in 1080p!!!

But 100 non-instanced animated characters (each with a unique weapon in hand) at 60FPS and low res (800x600).

Jetson (1/2 Nintendo Switch GPU) does 300 at 60 FPS in 1080p.

If the Visionfive 2 is either:

  - 100+ at 60 FPS and 1080p
  - 200+ at 60 FPS and 800x600
I'm going ALL IN on Risc-V (my own VM for scripting the engine) and StarFive (buy a few to use as demo for the MMO instead of Raspberry 4/Jetson Nano).

Re: RISC-V SBC VisionFive 2 Officially Shipped

#19
post #12

Any performance comparisons with Raspberry Pi boards? How does this RISC-V CPU stack up against them?

Not great; VisionFive appears to be significantly less performant. https://browser.geekbench.com/v5/cpu/compare/17159543?baseli...

We're still in the early days of risc-v availability. Arm has been widely deployed and the compilers optimised by both individuals and companies. I expect this comparison to look better in a year (not better than rpi4, just a smaller gap)

Re: RISC-V SBC VisionFive 2 Officially Shipped

#20
post #5
post #4

SDK: https://github.com/starfive-tech/VisionFive2 Docs: https://doc-en.rvspace.org/Doc_Center/visionfive_2.html

Looks pretty good opensource-wise, right? Some linux fork with ton of patches but hopefully most of that will get upstreamed, and except that I found no weird blobs or proprietary crap.

Still no sign of an actual Technical Reference Manual or any other detailed documentation on the SoC (registers, peripherals, etc). A big pile of Linux patches, while better than nothing, is a poor substitute for actual documentation.

SiFive does provide docs for the core complex (processors, cache, irq controller, etc), but that doesn't cover any SoC-specific peripherals.

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