Results 2 comments of Guangchi Fang

It is caused by SharedArray (https://pypi.org/project/SharedArray/). Simply enlarge /dev/shm by sudo mount -o remount,size=30G /dev/shm

```python if sys.platform == 'darwin': matplotlib.use("tkagg") else: matplotlib.use('Agg') ``` For visualization, simply comment these lines. It works for my linux.