Wei Wu

```to_file()``` does not support ```.pcd```, any plan for this? thanks!

just as the doc say : https://github.com/dmlc/cxxnet/tree/master/example/multi-machine assume we have two machine, and each machine has two GPUs then let hosts is: 192.168.0.111 192.168.0.112 and run: ./run.sh 2 2 bowl.conf...

implementation of paper Real-Time and Accurate Segmentation of 3-D Point Clouds Based on Gaussian Process Regression

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hello, @Durant35 have you reproduced the paper *Real-Time and Accurate Segmentation of 3-D Point Clouds Based on Gaussian Process Regression*?

https://github.com/PJLab-ADG/nr3d_lib/blob/main/media/pack_ops/packed_diff.png  https://github.com/PJLab-ADG/nr3d_lib/blob/main/media/pack_ops/packed_diff_appends.png  hello, thanks for the great tutorials! in the above two picture, when the input feats of ```6``` and ```3```, the output should be ```-3``` not ```3```...