ModuleNotFoundError: No module named 'SharedArray'

[zivlzw]

Hi! We have configured the environment according to the requirements, but there is still a problem importing the package.
How can we solve it？
Traceback (most recent call last):
File "exp/s3dis/pointtransformer_repro/train.py", line 26, in
from util.s3dis import S3DIS
File "/root/point-transformer-master/util/s3dis.py", line 8, in
import SharedArray as SA
ModuleNotFoundError: No module named 'SharedArray'