Traceback (most recent call last):


 "demo/pcd_demo.py", line 3, in <module>

from mmdet3d.apis import inference_detector, init_detector, show_result_meshlab


 "/mydev/code/mmdetection3d/mmdet3d/apis/__init__.py", line 1, in <module>

from .inference import (convert_SyncBN, inference_detector,


 "/mydev/code/mmdetection3d/mmdet3d/apis/inference.py", line 10, in <module>

from mmdet3d.core import (Box3DMode, DepthInstance3DBoxes,


 "/mydev/code/mmdetection3d/mmdet3d/core/__init__.py", line 1, in <module>

from .anchor import *
# noqa: F401, F403


 "/mydev/code/mmdetection3d/mmdet3d/core/anchor/__init__.py", line 1, in <module>

from mmdet.core.anchor import build_anchor_generator


 "/opt/conda/lib/python3.8/site-packages/mmdet/core/__init__.py", line 2, in <module>

from .bbox import *
# noqa: F401, F403


 "/opt/conda/lib/python3.8/site-packages/mmdet/core/bbox/__init__.py", line 7, in <module>

from .samplers import (BaseSampler, CombinedSampler,


 "/opt/conda/lib/python3.8/site-packages/mmdet/core/bbox/samplers/__init__.py", line 9, in <module>

from .score_hlr_sampler import ScoreHLRSampler


 "/opt/conda/lib/python3.8/site-packages/mmdet/core/bbox/samplers/score_hlr_sampler.py", line 2, in <module>

from mmcv.ops import nms_match


 "/opt/conda/lib/python3.8/site-packages/mmcv/ops/__init__.py", line 1, in <module>

from .bbox import bbox_overlaps


 "/opt/conda/lib/python3.8/site-packages/mmcv/ops/bbox.py", line 3, in <module>

ext_module = ext_loader.load_ext('_ext', ['bbox_overlaps'])


 "/opt/conda/lib/python3.8/site-packages/mmcv/utils/ext_loader.py", line 11, in load_ext

ext = importlib.import_module('mmcv.' + name)


 "/opt/conda/lib/python3.8/importlib/__init__.py", line 127, in import_module

return _bootstrap._gcd_import(name[level:], package, level)
ImportError: libtorch_cuda_cu.so: cannot open shared object file: No such file or directory

Traceback (most recent call last):


 "setup.py", line 2, in <module>

from torch.utils.cpp_extension import BuildExtension, CUDAExtension
ImportError: No module named torch.utils.cpp_extension
