Cycles GPU rendering on Apple Metal not working #99999

New Issue

Matt B · 2022-07-26T16:14:34+02:00

Matt B commented

2022-07-26 16:14:34 +02:00

System Information
Operating system: macOS-12.5-arm64-arm-64bit 64 Bits
Graphics card: Apple M 1 Max Apple 4.1 Metal - 76.3

Blender Version
Broken: version: 3.3.0 Alpha, branch: master, commit date: 2022-07-24 19:33, hash: 6db059e3d7
Worked: (Blender 3.2.1 appears to work okay)

Short description of error
Blender freezes when entering Cycles GPU rendering mode (Apple Metal). I've recorded a video of it happening (linked below), I'm using an M 1 Max MacBook Pro. In the recording I let it run for about a minute but I've left it for longer and there's no response.

https://www.dropbox.com/s/2iz3rzy071ogmzo/Screen%20Recording%202022-07-26%20at%2015.03.07.mov?dl=0

Exact steps for others to reproduce the error
Load up Blender 3.3a with default factory preferences and a simple scene with light and cube, ensure Metal GPU option is enabled, switch to Cycles rendering with GPU compute enabled.

**System Information** Operating system: macOS-12.5-arm64-arm-64bit 64 Bits Graphics card: Apple M 1 Max Apple 4.1 Metal - 76.3 **Blender Version** Broken: version: 3.3.0 Alpha, branch: master, commit date: 2022-07-24 19:33, hash: `6db059e3d7` Worked: (Blender 3.2.1 appears to work okay) **Short description of error** Blender freezes when entering Cycles GPU rendering mode (Apple Metal). I've recorded a video of it happening (linked below), I'm using an M 1 Max MacBook Pro. In the recording I let it run for about a minute but I've left it for longer and there's no response. https://www.dropbox.com/s/2iz3rzy071ogmzo/Screen%20Recording%202022-07-26%20at%2015.03.07.mov?dl=0 **Exact steps for others to reproduce the error** Load up Blender 3.3a with default factory preferences and a simple scene with light and cube, ensure Metal GPU option is enabled, switch to Cycles rendering with GPU compute enabled.

Matt B commented

2022-07-26 16:14:34 +02:00

Added subscriber: @mr_berns

Pratik Borhade commented

2022-07-27 05:32:59 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-07-27 05:32:59 +02:00

Changed status from 'Needs Triage' to: 'Archived'

Pratik Borhade closed this issue

2022-07-27 05:32:59 +02:00

Pratik Borhade commented

2022-07-27 05:32:59 +02:00

Thanks for the report. As said in the message in the top corner Loading render kernels: May take few minutes for the first time, you'll have to wait for kernels to load.
Not a bug, closing.

Thanks for the report. As said in the message in the top corner `Loading render kernels: May take few minutes for the first time`, you'll have to wait for kernels to load. Not a bug, closing.

Matt B commented

2022-07-27 09:39:13 +02:00

Hi, thank you for taking a look.

I just tried again as per your instruction and made sure to wait a decent amount of time, and eventually the render loaded as you suggest (thank you).

It took around 7 minutes, which seems like a long time compared to before - if I load up a fresh copy of Blender 3.2 on Apple silicon it takes only a few seconds.

I made sure to test this thoroughly by getting a different MacBook that I own (m1 MacBook Air), which has never had 3.2 installed, loading up the same default cube scene in a fresh install of Blender 3.2.1. It took approx 15 seconds to load.

Do you have any more info about what might be going on - is there a potential optimisation problem?

It seems like a possible regression from the previous version of Blender.

I should also add that it takes nowhere near this long for GPU rendering on my Windows PC, again only a few seconds after I click render (this was after a brand new install of Blender 3.3).

Thank you

Hi, thank you for taking a look. I just tried again as per your instruction and made sure to wait a decent amount of time, and eventually the render loaded as you suggest (thank you). It took around 7 minutes, which seems like a long time compared to before - if I load up a fresh copy of Blender 3.2 on Apple silicon it takes only a few seconds. I made sure to test this thoroughly by getting a different MacBook that I own (m1 MacBook Air), which has never had 3.2 installed, loading up the same default cube scene in a fresh install of Blender 3.2.1. It took approx 15 seconds to load. Do you have any more info about what might be going on - is there a potential optimisation problem? It seems like a possible regression from the previous version of Blender. I should also add that it takes nowhere near this long for GPU rendering on my Windows PC, again only a few seconds after I click render (this was after a brand new install of Blender 3.3). Thank you

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Cycles GPU rendering on Apple Metal not working #99999