Deze

loss question

2

https://github.com/ultralytics/yolov5/blob/8f28ea4945495199ea236264ba36bf8f0a62c732/train.py#L313 hello, I have a question about this line, in DDP mode, when backward() is called, it will auto average gradient overall gpus, why here loss multiply wordsize? Besides, when...

Hello, I am using the newest [OpenPCDet](https://github.com/open-mmlab/OpenPCDet/tree/master), and copy your codes to it. I met a problem while training **DSA model of second/pointpillar/pvrcnn**, while **not meeting this problem in pointrcnn_dsa**,...

Hi, how can I generate evaluation on val set to submit on server?

bugfix: limit voxel coords range for spconv.SparseConvTensor scatter …

1

…error.

IoU related loss

1

Hi, yukang @yukang2017, yanwei @yanwei-li, I am confused about the iou related loss you used in dense head(`IoULossSparse` and `IoURegLossSparse`). I reproduce your model on my devices, but I find...

[Bug] CenterHead with multi task.

6

### Prerequisite - [X] I have searched [Issues](https://github.com/open-mmlab/mmdetection3d/issues) and [Discussions](https://github.com/open-mmlab/mmdetection3d/discussions) but cannot get the expected help. - [X] I have read the [FAQ documentation](https://mmdetection3d.readthedocs.io/en/latest/notes/faq.html) but cannot get the expected help....