I'm sharing it here since I had a pain in the bottom with solving this one half of the morning.
Basically whenever I ran Vellum sim on my Windows 8.1 laptop I got an error “OpenCL Exception: clCreateProgramWithSource (-34)” in Houdini Console and the sim did not run. I googled for an answer and found similar problems OpenCL related. My Houdini help showed “No Configured OpenCL Device”. I tried setting multiple env variables like HOUDINI_OCL_DEVICENUMBER=1 (0 -too),
HOUDINI_OCL_VENDOR=“Intel(R) Corporation”, HOUDINI_OCL_VENDOR=“NVIDIA Corporation” , HOUDINI_OCL_DEVICETYPE=CPU etc.
Ok - to the point - my solution was:
1. Edit the settings file "C:\Users\\Documents\houdini17.0\houdini.env“
2. Add this line anywhere ”HOUDINI_OCL_DEVICETYPE=GPU“.
DONE! So simple, yet very frustrating when you don't know it.
ps. For newer Houdini users - easy way to test if things work is to use Houdini Command Line Tools and run command ”hgpuinfo -c“. If it lists your device it means it works. If it throws something like: ”Could not create OpenCL device of type (HOUDINI_OCL_DEVICETYPE): GPU (…)" means it won't work.
Houdini 17.0 on Windows throwing "OpenCL Exception: clCreateProgramWithSource (-34)" error [SOLVED]12110 8 4
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