Wu Zheng

@sidml It's good!

@libingDY You may find the env config in https://github.com/poodarchu/Det3D/blob/master/INSTALLATION.md For my env, the cuda 10.1 and pytorch 1.4.0 is fine, but I have not used so high version of pytorch...

@libingDY It seems an issue of apex, you may also need to reinstall it after updating your pytorch version.

@LuYujing-97 Try to re-install the module SE-SSD/det3d/ops/syncbn.

Thanks for your commit and I appreciate your modification. I'll merge your commit if more people report this problem, considering that many developers haven't updated their torch version to 1.5.

@jiangliangliang2020 It's caused by the copy.deepcopy() funtion, you may try to change the python version as suggested by @magnetmoment, or you may try to change this line to ```python model_ema...

@sixcomicpen How about installing spconv 1.0 or 1.1?

@JayYangSS I tried it but the results were not better....I guess it needs more work to attain further improvement.

@daxiongpro All losses associated with hard targets are necessary to be kept to train the model, as they follow the design of SECOND and "dir_loss" is actually a part of...

Hi @liangkangzheng "density" should be a typo and we actually mean intensity, i.e., the reflectivity of laser rays. Thanks for your reminding.