bsdf.cp311-win_amd64.pyd was loaded without ImportError?
I’m guessing bsdf was compiled with AVX enabled, but your CPU doesn’t support AVX.
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How would i go about fixing that and disabling AVX in my current version to see if thats the issue? i may have to rebuild a version that has that turned off, and if thats the case i would need the instructions to do so as i dont know/remember how.
You need to install Visual Studio with “Desktop development with C++”.
Then,
- Download pyradiance source.
git clone https://github.com/LBNL-ETA/pyradiance.git pyradiance-src
- Edit pyradiance-src/CMakeLists.txt to disable AVX.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b94f51e..f2fefce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,7 +74,6 @@ if(MSVC)
/GL # Whole program optimization
/Qpar # Auto-parallelizer
/fp:fast # Fast floating-point model
- /arch:AVX2 # Use AVX2 instructions (modify based on target CPU)
/GT # Fiber-safe optimizations
/GF # String pooling
)
- Build and install.
py -3.11 -m pip install .\pyradiance-src
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You still have dlltracer in your code, but it seems -future helped.
Can you also try to run sde.exe -- python -c "import pyradiance; print(pyradiance)". It seems sde is running programms in more strict mode and instead of DLL load failed while importing bsdf: A dynamic link library (DLL) initialization routine failed. we might be able to see the actual instructions that’s breaking.
But ensure to remove dlltracer patch for __init__.py from this post A way to narrow down `A dynamic link library (DLL) initialization routine failed.` - #7 by Andrej730 before running it.
I’ve tried to reproduce issue locally using SDE. I guess -glp is the closest option to Intel(R) Pentium(R) Silver J5040 CPU in SDE, but it’s hard to reproduce it - it seems in my case python’s vcruntime140.dll is also using incompatible instructions:
> sde.exe -glp -- python
TID 0 SDE-ERROR: Executed instruction not valid for specified chip (GOLDMONT_PLUS): 0x7ffcc79a1ec7: vmovdqu ymm0, ymmword ptr [rdx]
Image: Python311\VCRUNTIME140.dll+0x1ec7
Function: __NLG_Return2
Instruction bytes are: c5 fe 6f 02
But I’ve built a whl with /arch:AVX2 # Use AVX2 instructions (modify based on target CPU) removed from cmakelists.
@Flamesofshadow you can try it out with pip install pyradiance-1.1.3-cp311-cp311-win_amd64.whl (ensure to uninstall previous package with pip uninstall pyradiance)
@Andrej730 i went through the process of downloading and installing pyradiance-1.1.3-cp311-cp311-win_amd64.whl after i uninstalled my version of pyradiance.
I ran pip show pyradiance it looks correct
Version: 1.1.3
Summary: Python inteface for Radiance
Home-page: https://github.com/lbnl-eta/pyradiance
Author:
Author-email: Taoning Wang <taonignwang@lbl.gov>
License:
Location: C:\Users\.....\AppData\Local\Programs\Python\Python311\Lib\site-packages
Requires: numpy
Required-by:
ran py -3.11 -c “import pyradiance.bsdf as m; print(‘BSDF loaded OK’)”
BSDF loaded OK
I then ran sde.exe – python -c “import pyradiance; print(pyradiance)” to see what would happen. it just gave this with nothing else:
<module 'pyradiance' from 'C:\\Users\\.....\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages\\pyradiance\\__init__.py'>
Great! Seems like this approach worked after all 
Can you please try the same command but using pyradiance from pip instead?
I tried VirtualBox which doesn’t support AVX.
Visual Studio debugger worked to catch the error.
In this case, the error occured while initializing global variable “Buffer buf(128);” defined in nanobind/src/error.cpp.
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are you wanting me to uninstall the .whl pyradiance and then try an unmodified version using these steps?
pip uninstall -y pyradiance
pip install pyradiance
py -3.11 -c "import pyradiance; print(pyradiance.__file__)"
sde.exe -- python -c "import pyradiance; print(pyradiance)"Yes. I guess the results should be similar to what Yukihiro Nakadaira found in Visual Studio.
as soon as i got to py -3.11 -c “import pyradiance; print(pyradiance.file)” i got this error again:
File "<string>", line 1, in <module>
File "C:\Users\.....\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyradiance\__init__.py", line 11, in <module>
from .bsdf import spec_xyz, xyz_rgb
ImportError: DLL load failed while importing bsdf: A dynamic link library (DLL) initialization routine failed.
then i followed up with the sde just to see what I’d get:
Notice: No chip or cpuid.def file were given, so host's cpuid was used for chip check. Image: C:\Users\.....\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyradiance\bsdf.cp311-win_amd64.pyd+0x1019
Instruction bytes are: c5 f9 ef c0
the SDE does look similar to what Yukihiro found, so as far as i can understand it it does seem like its cpu related because the .whl version didnt give the errors.
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Issue got fixed in pyradiance and it now just works.
Thanks to everyone looking at this, a special thanks to @Flamesofshadow for remarkable patience and @ynkdir for an unbelievable and very precise insight that led to solving the case.
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