Rosetta on M1 is "hit and miss"?
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- KVRian
- Topic Starter
- 628 posts since 30 Aug, 2012
According to Apple's info about Rosetta: "Rosetta 2 works in the background whenever you use an app built only for Mac computers with an Intel processor. It automatically translates the app for use with Apple silicon."
OK, then how come some plugins that work perfectly in Big Sur on Intel do NOT work in M1 with Rosetta?
OK, then how come some plugins that work perfectly in Big Sur on Intel do NOT work in M1 with Rosetta?
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- KVRian
- 1116 posts since 3 May, 2005 from Victoria, BC
Rosetta works at the process level, meaning plugins and their host must be the same architecture. So if you are running an M1 host, it can only load M1 plugins, not Intel plugins running under Rosetta. For AU, Apple has worked around this running AU plugins out of process with a bridge. Most VST hosts however do not supply a bridge, so they are unable to run Intel plugins. Instead you will need to run the host under Rosetta.
Rosetta does not support AVX, AVX2, and AVX512 instructions, so if a plugin requires them, it will not run under Rosetta.
Otherwise plugins should run, can you give any examples of plugins that don't?
Rosetta does not support AVX, AVX2, and AVX512 instructions, so if a plugin requires them, it will not run under Rosetta.
Otherwise plugins should run, can you give any examples of plugins that don't?
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- KVRian
- Topic Starter
- 628 posts since 30 Aug, 2012
Yes - mine! They work in Logic 10.6.1 on Big Sur Intel but do not work in Logic on M1 with Rosetta. Validation fails with plugin I/O pinout configuration. Something as basic as that I would think should not be an issue yet it "fails" without much clue as to why. I/O reported is as it should be (mono/stereo):
Code: Select all
FORMAT TESTS:
Reported Channel Capabilities (explicit):
[1, 1] [2, 2]
Input/Output Channel Handling:
1-1 1-2 1-4 1-5 1-6 1-7 1-8 2-2 2-4 2-5 2-6 2-7 2-8 4-4 4-5 5-5 6-6 7-7 8-8
X X
# # AudioChannelLayouts (2), Input Scope:
ChannelLayout is Writable: T
The Unit publishes the following Channel Layouts:
0x640001, 0x650002,
Is Audio Channel Layout Available:
Mono Stereo Binau. AU_4 Ambi. AU_5 AU_5_0 AU_6 AU_6_0 AU_7_0 AU_7_0F AU_8 AU_5_1 AU_6_1 AU_7_1 AU_7_1F
X X
ERROR: 4097 IN CALL Problem with initial Channel layout state
* * FAIL
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- KVRian
- 1116 posts since 3 May, 2005 from Victoria, BC
Does it work in other hosts? So far I've found the plugin bridge and Logic very buggy on M1 macs.
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- KVRian
- Topic Starter
- 628 posts since 30 Aug, 2012
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- KVRian
- Topic Starter
- 628 posts since 30 Aug, 2012
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- KVRist
- 470 posts since 17 Jan, 2005
Our findings on a M1 mac with "Intel" only plug-ins:Fender19 wrote: ↑Tue Mar 23, 2021 5:25 pm Yes - mine! They work in Logic 10.6.1 on Big Sur Intel but do not work in Logic on M1 with Rosetta. Validation fails with plugin I/O pinout configuration. Something as basic as that I would think should not be an issue yet it "fails" without much clue as to why. I/O reported is as it should be (mono/stereo):
You have to open the Terminal in "Rosetta" mode (right-click Terminal and use info dialog to tick "Open using Rosettta") Then run auval and it runs now in "Intel" mode (you can check this with the activity monitor - column "Kind"). Auval will then execute your plug-in in "Intel" mode like on an Intel mac and it should validate properly.
You can use same method with your host (e.g. run Logic in Rosetta mode) and validate the plug-in in plug-in manager. After that it is safe to switch back Logic to run in "Apple" mode and it will show up your Intel plug-in (due to the AU bridge).
Best
accSone