With this combination the wheel expects torch_cuda_cu.so and torch_cuda_cpp.so (i.e. the pytorch used for building had a split-libraries option enabled), but when installing torch with conda, only torch_cuda.so is available (pytorch built without split-libraries option).
With this combination the wheel expects
torch_cuda_cu.soandtorch_cuda_cpp.so(i.e. the pytorch used for building had a split-libraries option enabled), but when installing torch with conda, onlytorch_cuda.sois available (pytorch built without split-libraries option).