search

Acmece / rl-collision-avoidance

Implementation of the paper "Towards Optimally Decentralized Multi-Robot Collision Avoidance via Deep Reinforcement Learning"
https://arxiv.org/abs/1709.10082
326 stars 92 forks source link

ROS time moved backwards #8

Closed leilani-x closed 4 years ago

leilani-x commented 4 years ago

Hi, I get the following error when I run mpiexec -np 50 python circle_test.py

[ERROR] [1586937246.001479, 18.100000]: ROS time moved backwards: 4165.032s
Traceback (most recent call last):
  File "circle_test.py", line 94, in <module>
    env = StageWorld(OBS_SIZE, index=rank, num_env=NUM_ENV)
  File "/code/rl-collision-avoidance/circle_world.py", line 76, in __init__
    rospy.sleep(1.)
  File "/opt/ros/kinetic/lib/python2.7/dist-packages/rospy/timer.py", line 164, in sleep
    raise rospy.exceptions.ROSTimeMovedBackwardsException(time_jump)
rospy.exceptions.ROSTimeMovedBackwardsException: ROS time moved backwards
Acmece commented 4 years ago

I didn't meet this problem in the past. I guess there are other ros-related programs running(roscore etc ..). Could you please check it and test it again?