[vlc-devel] Fwd: RISC-V Vector hardware

[Rémi Denis-Courmont]

Le 20 octobre 2023 14:17:06 GMT+03:00, Steve Lhomme <robux4 at ycbcr.xyz> a écrit :
>On 2023-10-20 13:13, Rémi Denis-Courmont wrote:
>> Moving as videolan@ seems dead or no longer open.
>
>I read it :D
>
>Should we add a cross-compiler target in the CI as well ? We already have one for Debian on ARM.

It should be feasible, but:

1) My informed guess is that a full cross-compilation of contribs for Linux would improve coverage more than adding yet another VLC build. We don't really need RV for that, AArch64 would do just fine. Contribs are what's been causing most regressions for me (most not specific to RV).

2) Without something like FFmpeg checkasm, there is not much point in adding ISAs with the integer sizes as there is nothing really specific to check. And even then we'd need native builds, not cross-builds. Also VLC assembler is barely used for anything anymore.

>
>> 
>> -------- Courriel d’origine --------
>> De : "Rémi Denis-Courmont" <remi at remlab.net>
>> Envoyé : 20 octobre 2023 12:12:55 GMT+03:00
>> À : videolan at videolan.org
>> Objet : RISC-V Vector hardware
>> 
>> Hi,
>> 
>> The first known commercially available RISC-V board with standard Vector support is now on sale for $50 + $10 shipping + ? custom duties.
>> 
>> At that price, it's a very low-end piece, with a single vector-capable core and half a GiB of memory. If you are looking for your next SBC, STB, VideoLAN CI or FFmpeg FATE runner, move along, there is nothing to ser. So it's at best a stop-gap measure for manual testing until better (and more expensive) hardware comes out. The state of Linux kernel support is also unclear.
>> 
>> https://www.analoglamb.com/product/kendryte-k230-risc-v-development-board-canmv-k230/
>> 
>> Delivery time to Europe is allegedly a month. There may be better hardware pretty soon, maybe even this year.
>> 
>> Personally, I could use one for the time being, but I can also live without yet another piece of future electronic waste.
>> 
>> Opinions?
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