UserWarning: semaphore_tracker: There appear to be 1 leaked semaphores to clean up at shutdown len(cache))

[zeeshanalipanhwar]

!python demo/demo.py \
    --config-file configs/CondInst/MS_R_50_1x.yaml \
    --input 00070.jpg \
    --opts MODEL.WEIGHTS training_dir/CondInst_MS_R_50_1x/model_final.pth

The above script leads to the following:

[04/02 18:40:49 detectron2]: Arguments: Namespace(confidence_threshold=0.3, config_file='configs/CondInst/MS_R_50_1x.yaml', input=['/00070.jpg'], opts=['MODEL.WEIGHTS', 'training_dir/CondInst_MS_R_50_1x/model_final.pth'], output=None, video_input=None, webcam=False)
WARNING [04/02 18:40:49 d2.config.compat]: Config 'configs/CondInst/MS_R_50_1x.yaml' has no VERSION. Assuming it to be compatible with latest v2.
[04/02 18:40:54 detectron2]: /00070.jpg: detected 5 instances in 0.22s
: cannot connect to X server 
/usr/lib/python3.7/multiprocessing/semaphore_tracker.py:144: UserWarning: semaphore_tracker: There appear to be 1 leaked semaphores to clean up at shutdown
  len(cache))

Why is that errors caused, and what is the warning about?

[Mary63]

You need to define the output folder, otherwise you will get this error. Also, the output should come before —opts otherwise Detectron2 will raise error.

for example you should write it like this:

python demo/demo.py \ --config-file configs/CondInst/MS_R_50_1x.yaml \ --input 00070.jpg \ --output OutputFolder --opts MODEL.WEIGHTS training_dir/CondInst_MS_R_50_1x/model_final.pth