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Cycles HIP binaries disabled due to compiler bugs #104786

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opened 2023-02-15 17:14:27 +01:00 by Brecht Van Lommel · 8 comments
Brecht Van Lommel commented 2023-02-15 17:14:27 +01:00
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Tasks

  • Enable on Windows (#107098)
  • Enable on Linux (#107662)
  • Enable Radeon VII (gfx906) - Not expected to get fixed, so will remain disabled

Background

There are known bugs in HIP compiler that are causing random build failures when making changes to the Cycles kernel. This is preventing developers from efficiently making improvements to Cycles.

Cycles AMD GPU rendering were disabled in Blender 3.6 alpha, so that ongoing work like Principled v2 is not blocked. Additionally light tree sampling is not available for HIP in Blender 3.5. We hope this can be resolved later on in the 3.6 release cycle.

Relevant FIXME's in LLVM amdgpu backend (in fact I suspect we hit the same ones back when we were using OpenCL).
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp#L221
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp#L296

Most recent issues:
#104085 (#104720 )
#104669
#104097
https://archive.blender.org/developer/D16714

### Tasks - [x] Enable on Windows (#107098) - [x] Enable on Linux (#107662) - Enable Radeon VII (gfx906) - Not expected to get fixed, so will remain disabled ### Background There are known bugs in HIP compiler that are causing random build failures when making changes to the Cycles kernel. This is preventing developers from efficiently making improvements to Cycles. Cycles AMD GPU rendering were disabled in Blender 3.6 alpha, so that ongoing work like Principled v2 is not blocked. Additionally light tree sampling is not available for HIP in Blender 3.5. We hope this can be resolved later on in the 3.6 release cycle. Relevant FIXME's in LLVM amdgpu backend (in fact I suspect we hit the same ones back when we were using OpenCL). https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp#L221 https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp#L296 Most recent issues: #104085 (#104720 ) #104669 #104097 https://archive.blender.org/developer/D16714
Brecht Van Lommel added the
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Brecht Van Lommel added this to the Render & Cycles project 2023-02-15 17:18:17 +01:00
Brecht Van Lommel changed title from Cycles HIP disabled due to compiler bugs to Cycles HIP binaries disabled due to compiler bugs 2023-02-15 17:33:37 +01:00
Brecht Van Lommel added this to the 3.6 LTS milestone 2023-02-15 17:33:45 +01:00
Brian Savery (AMD) commented 2023-02-16 16:34:03 +01:00
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Just an update from the AMD side, the fix for the above issue is in progress on the compiler side. Can't comment on ETA at this point.

Just an update from the AMD side, the fix for the above issue is in progress on the compiler side. Can't comment on ETA at this point.
Gioxyer commented 2023-02-22 10:16:15 +01:00
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Good morning,
any news from AMD?

Thanks in advance,
Gioxyer

Good morning, any news from AMD? Thanks in advance, Gioxyer
Brecht Van Lommel commented 2023-02-22 10:18:23 +01:00
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When there is news it will be posted here, for now there is no news yet.

When there is news it will be posted here, for now there is no news yet.
Gioxyer commented 2023-02-22 10:18:56 +01:00
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Ok thank you so much

Ok thank you so much
Emily Smirle commented 2023-03-29 15:02:14 +02:00
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Can we have the HIP button disabled in the Settings for the time being? Possibly with an informative message? It's definitely contributing to a little confusion and wasted time for the bug team (see my own bug report #106225 )

Can we have the HIP button disabled in the Settings for the time being? Possibly with an informative message? It's definitely contributing to a little confusion and wasted time for the bug team (see my own bug report #106225 )
Brian Savery (AMD) commented 2023-03-29 16:47:47 +02:00
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Disabling HIP devices in ui should be fine, @brecht do you agree? I don't think it needs an involved message. This is temporary and 3.6 is in alpha, so I don't think it needs an involved user message.

Disabling HIP devices in ui should be fine, @brecht do you agree? I don't think it needs an involved message. This is temporary and 3.6 is in alpha, so I don't think it needs an involved user message.
Brecht Van Lommel commented 2023-04-19 18:20:14 +02:00
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Binaries were re-enabled on Windows now. Linux is still waiting for a new ROCm release, and gfx906 is also disabled due to an issue to be solved still.

Binaries were re-enabled on Windows now. Linux is still waiting for a new ROCm release, and gfx906 is also disabled due to an issue to be solved still.
Brecht Van Lommel commented 2023-11-28 19:48:34 +01:00
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Radeon VII is not expected to be fixed, so closing this issue as resolved since all the other ones work.

Radeon VII is not expected to be fixed, so closing this issue as resolved since all the other ones work.
Brecht Van Lommel added the
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Reference: blender/blender#104786
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