Extremly slow when preparing data

[fwzdev1]

Hi,

I tried to use the code and now stuck at prepare_data.sh.
I got I7-13700 and 4060 on my PC, and it took me over 24 hours to run this script (still running yet). Is it common to see it?

Besides, since the CudaOutOfMemory error, the multiprocess function in precompute_quaternion_labels.py does not always work, and I guess it already missed a lot of data.

Here is the picture:

You can see that, it took 20 seconds for just one iter (I have some other work load running, when focusing on the py script only, the time is around 8 seconds).

Thanks!