#asahi-gpu on 2023-07-15 — irc logs at oftc.irclog.whitequark.org

2022-12-21 00:46 ChanServ changed the topic of #asahi-gpu to: Asahi Linux GPU development (no user support, NO binary reversing) | Keep things on topic | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-gpu

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01:23 <alyssa> lina: https://developer.apple.com/documentation/metal/mtlcommandbuffer/2966541-computecommandencoderwithdispatc?language=objc

01:23 <alyssa> I'm not sure if you've seen this?

01:23 <alyssa> it seems the default is Serial, which is sensible, but MTLDispatchTypeConcurrent generates some... genuinely bizarre stuff

01:24 <alyssa> might be worth poking at sometime, maybe get some more uapi unknowns discovered

01:24 <alyssa> and then with concurrent mode, https://developer.apple.com/documentation/metal/mtlcomputecommandencoder/2966553-memorybarrierwithscope?language=objc becomes non-nop

01:25 <alyssa> but what it's doing I.. cannot understnad

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02:06 <alyssa> karolherbst: native support for non-uniform workgroup sizes on m1 :~)

02:06 <alyssa> (and separate system values in the shader for "dispatched wg size" and "actual current wg size")

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03:02 <lina> alyssa: I'm pretty sure I saw that some point, when you do non-uniform sizes there's this big structure/table thing with the sizes I think?

03:05 <alyssa> lina: hm?

03:06 <alyssa> I think we might be talking about differnet things

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03:06 <lina> Maybe? I might be misremembering too

03:06 <lina> But I think I saw something where one of the dispatch modes ended up with some table provided that I assumed had something to do with workgroups

03:06 <lina> This was a while ago though... I could be totally off

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