HIP compile error running Blender 3.2 Alpha on Linux with Vega 64 and ROCm 5.1 #96950
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Reference: blender/blender#96950
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System Information
Operating system: Linux-5.13.0-39-generic-x86_64-with-glibc2.34 64 Bits
Graphics card: Radeon RX Vega (vega10, LLVM 13.0.1, DRM 3.41, 5.13.0-39-generic) AMD 4.6 (Core Profile) Mesa 22.0.0-devel
Blender Version
Broken: version: 3.2.0 Alpha, branch: master (modified), commit date: 2022-04-01 09:05, hash:
d34c4089f1Worked: N/A
Short description of error
hipcc compile error running on Linux with Vega 64 and ROCm 5.1.
Exact steps for others to reproduce the error
I've installed ROCm 5.1 successfully.
Then I've updated Blender to the current build 62867.
After that I switched support for Linux HIP ON in CMakeLists.txt, and compiled the modified source successfully.
I started Blender from the shell.
The Vega 64 was detected as a HIP device.
I switched to Cycles, with GPU compute.
Render started compiling the kernels.
It failed with message 'Failed to execute compilation command, see console for details.'
The console displayed the following:
Read prefs: /home/ableeker/.config/blender/3.2/config/userpref.blend
Compiling HIP kernel ...
hipcc -Wno-parentheses-equality -Wno-unused-value --hipcc-func-supp -O3 -ffast-math --amdgpu-target=gfx900 -I /home/ableeker/blender-git/build_linux/bin/3.2/scripts/addons/cycles/source --genco /home/ableeker/blender-git/build_linux/bin/3.2/scripts/addons/cycles/source/kernel/device/hip/kernel.cpp -o "/home/ableeker/.cache/cycles/kernels/cycles_kernel_gfx900_17AB9D06D9B6B9CE25E4218B7AC3ED24"
error: unhandled SGPR spill to memory
error: unhandled SGPR spill to memory
2 errors generated when compiling for gfx900.
Failed to execute compilation command, see console for details.
Refer to the Cycles GPU rendering documentation for possible solutions:
https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html
Saved session recovery to '/tmp/quit.blend'
Blender quit
Added subscriber: @Aldo-Bleeker
Added subscriber: @LloydAlmeida
See https://developer.blender.org/D14360
Added subscriber: @PratikPB2123
Changed status from 'Needs Triage' to: 'Archived'
These GPUs are only supported on Windows so far:
c46e58817cAdded subscriber: @MilanJaros
I figured out which kernel is causing this error. It is the "integrator_intersect_closest" kernel. One possible solution would be to split the module with all the kernels into multiple modules. I have tried this with HIPCC 5.2.3 (gfx900) and the build passes without a problem.
Added subscriber: @brecht
gfx900is already enabled and compiling successfully on the buildbot, without splitting modules. We use hipcc version 5.1.20531, so maybe we'll run into this when we upgrade, though this bug report is about 5.1 as well so I'm not sure that's what makes the difference.I used Blender version 3.2.1 with hipcc v5.1 and v5.2 and got the error "unhandled SGPR spill to memory". Thanks for the tip - I see a commit in the Blender 3.3-release branch to support Vega and buildbot with hipcc 5.2.x. I'll give it a try. Thanks.