The problem about run train.py

[LuYujing-97]

Hello, when I run train.py, I meet this problem, do you know how to solve it? $ python train.py
True
Traceback (most recent call last):
File "train.py", line 15, in
from det3d.datasets import build_dataset
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/init.py", line 4, in
from .kitti import KittiDataset
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/kitti/init.py", line 1, in
from .kitti import KittiDataset
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/kitti/kitti.py", line 10, in
from det3d.datasets.custom import PointCloudDataset
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/custom.py", line 8, in
from .pipelines import Compose
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/pipelines/init.py", line 20, in
from .preprocess import Preprocess, Voxelization, AssignTarget
File "/home/zjlab/lyj/SE-SSD/det3d/datasets/pipelines/preprocess.py", line 9, in
from det3d.builder import (
File "/home/zjlab/lyj/SE-SSD/det3d/builder.py", line 18, in
from det3d.models.losses import GHMCLoss, GHMRLoss, losses
File "/home/zjlab/lyj/SE-SSD/det3d/models/init.py", line 2, in
from .backbones import * # noqa: F401,F403
File "/home/zjlab/lyj/SE-SSD/det3d/models/backbones/init.py", line 3, in
from .scn import SpMiddleFHD
File "/home/zjlab/lyj/SE-SSD/det3d/models/backbones/scn.py", line 6, in
from det3d.models.utils import Empty, change_default_args
File "/home/zjlab/lyj/SE-SSD/det3d/models/utils/init.py", line 1, in
from .conv_module import ConvModule, build_conv_layer
File "/home/zjlab/lyj/SE-SSD/det3d/models/utils/conv_module.py", line 7, in
from .norm import build_norm_layer
File "/home/zjlab/lyj/SE-SSD/det3d/models/utils/norm.py", line 4, in
from det3d.ops.syncbn import DistributedSyncBN
File "/home/zjlab/lyj/SE-SSD/det3d/ops/syncbn/init.py", line 1, in
from .syncbn import DistributedSyncBN
File "/home/zjlab/lyj/SE-SSD/det3d/ops/syncbn/syncbn.py", line 12, in
from . import syncbn_gpu
ImportError: /home/zjlab/lyj/SE-SSD/det3d/ops/syncbn/syncbn_gpu.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZN6caffe26detail36_typeMetaDataInstance_preallocated_7E

[Vegeta2020]

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