Multi Card training

[Zhaoyibinn]

First of all, thank you for your open source
Due to my limited video memory (4090 24GB), I sometimes encounter OOM issues, but I have two graphics cards, so I want to try multi card training.
Instan NSR itself supports multiple cards, but when I simply set the GPU in the parameters to 0, 1, an error will occur in the GS branch

File "/home/ime-lab/zyb/gs/GSDF/gaussian_splatting/gaussian_renderer/__init__.py", line 266, in pr
efilter_voxel                                                                                       
return radii_pure > 0                                                                           
RuntimeError: CUDA error: an illegal memory access was encountered                                  
Compile with `TORCH_USE_CUDA_DSA` to enable device-side assertions. 

Do you have any suggestions?