CUDA 11 support

[tengyu-liu]

Hi,

I'm encountering some strange errors when using mesh_intersection on 3090 GPU, CUDA 11.1, python 3.8.8, pytorch 1.8.1.

I encountered a CUDA out of memory error when running examples/batch_smpl_untangle.py using suggested parameters.
If I add a line val += np.random.normal(0, 0.1, val.shape) between examples/batch_smpl_untangle.py:129 and 130, coll_idx can sometimes have a negative length in loss.py:224.

It looks like that the problem is with CUDA11. Is it possible for you to support CUDA 11?

Thank you very much!

[wangsen1312]

I have tried on CUDA 11.3 + python3.7 + pytorch 1.11~ it works well