[Bug] chamfer_distance Error in calculation result

[Annarine]

Prerequisite

• [X] I have searched Issues and Discussions but cannot get the expected help.
• [X] The bug has not been fixed in the latest version(https://github.com/open-mmlab/mmcv).

Environment

mmcv 2.1 torch 2.2.2 cuda version 12.2

Reproduces the problem - code sample

import mmcv import mmcv.ops import chamfer_distance xyz1 = torch.tensor([-0.5562, 0.7417]).cuda() xyz2 = torch.tensor([-4.1055, 5.8594]).cuda() result = chamfer_distance(xyz1, xyz2) print(result)

Reproduces the problem - command or script

python 执行代码

Reproduces the problem - error message

出现非预期结果 idx出现越界，dist出现错误值

Additional information

[38.7883],[38.7883],[0],[0]