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944 points 6a74 | 8 comments | | HN request time: 0.424s | source | bottom
1. lynguist ◴[] No.41803915[source]
May I use this space to ask the question: is the M3 substantially different from the M1 and M2 that it is not supported?
replies(8): >>41804010 #>>41804011 #>>41804527 #>>41805868 #>>41806799 #>>41806899 #>>41808488 #>>41809116 #
2. gilgoomesh ◴[] No.41804010[source]
I don't know how different but it apparently has dramatically improved hardware shaders compared to earlier M chips so I'm guessing that a lot of this might be different, there.
3. wmf ◴[] No.41804011[source]
The M3 GPU added a bunch of features including ray tracing. The "dynamic caching" sounds like a big change to local memory which could require serious driver changes.

https://www.theverge.com/2023/10/30/23938676/apple-m3-chip-g...

4. fl0id ◴[] No.41804527[source]
Yes. And also some other peripherals are different.
5. pbasista ◴[] No.41806799[source]
From what I understand, one of the factors to not focus on Asahi Linux on M3 for now is the lack of an M3 Mac Mini which supposedly makes the development easier.
6. geokon ◴[] No.41806899[source]
last I check you can't even buy M1 macs on apple's website anymore (maybe it's region dependent)
7. aykevl ◴[] No.41808488[source]
M3 and M4 haven't been supported yet because they weren't a priority (looks like they've been focusing on gaming support for the last year or so).

Alyssa said in her talk that they'll probably get it working in 6 months or so: https://www.youtube.com/watch?v=pDsksRBLXPk&t=2932s

8. ribit ◴[] No.41809116[source]
M3 GPU uses a new instruction encoding, among other things. Also, it has a new memory partitioning scheme (aka. Dynamic Caching), which probably requires a bunch of changes to both the driver interface and the shader compiler. I hope the Asahi team will get to publishing the details of M3 soon, I have been curious about this for a while.