cudaErrorUnknown / cudaGraphicsGLRegisterBuffer

You only need to add this:

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia

before run a bin with GPU.

example:

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia ./particles

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