20: Waiting for vehicles, stuck in loop

[KlrShaK]

Hey I installed Carla as you described in #657 , It runs perfectly fine when I do ./CarlaUE4.sh. However, when I try to run the following examples in Quick Start CARLA.

behavior_metrics$ python3 driver_carla.py -c configs/CARLA/default_carla.yml -g
40: CARLA is not supported
20: SimulatorEnv: launching simulator server.
20: SimulatorEnv: launching simulator server.
Traceback (most recent call last):
  File "driver_carla.py", line 429, in <module>
    main()
  File "driver_carla.py", line 308, in main
    controller = ControllerCarla()
  File "/home/<user>/BehaviorMetrics/behavior_metrics/utils/controller_carla.py", line 75, in __init__
    self.world = client.get_world()
RuntimeError: time-out of 100000ms while waiting for the simulator, make sure the simulator is ready and connected to localhost:2000

which is similar to #598 #587 , I tried running Carla on its own using './CarlaUE4.sh', I got the following output:

4.26.2-0+++UE4+Release-4.26 522 0
Disabling core dumps.
MESA-INTEL: warning: Performance support disabled, consider sysctl dev.i915.perf_stream_paranoid=0

The simulator loaded fine and I can move around. I also changed sudo sysctl dev.i915.perf_stream_paranoid=0 which removed the warning. and also the error in BehaviorMetric somehow changed now when I run. (THIS IS MOST RECENT ERROR)

/behavior_metrics$ python3 driver_carla.py -c configs/CARLA/default_carla.yml -g
40: CARLA is not supported
20: SimulatorEnv: launching simulator server.
20: SimulatorEnv: launching simulator server.
20: Waiting for vehicles!
20: Waiting for vehicles!
20: Waiting for vehicles!
.
.
.

The error 20: Waiting for vehicles! loops continuously This issue is similar to #588 , but it doesn't help solving the issue as Carla on its own runs fine and doesn't show any dependencies issue.

Also I'm unable to find log files as mentioned in #588 , in environments.py file saves the log in /tmp/ folder, but there is no temp folder in my/behaviormetric/ folder, there is a /log/ folder but the logs.log file that it has is empty

[sergiopaniego]

Hi, Thanks for opening the issue. Based on the information you're sharing, there could be a compatibility issue. It could be CARLA server, CARLA simulator frontend (Python API), or even carla-ros-bridge as it says CARLA is not supported. Could you please share more details about which version of CARLA and carla-ros-bridge you've installed?

The log files should be in your machine's root path /tmp, not inside Behavior Metrics. Could you please double-check if it is present there?

[KlrShaK]

Heya, My Carla version 0.9.13 same as on website. The problem was with carla-ros-bridge since I didn't install Carla using Debian CARLA installation so because of that I think it didn't install carla-ros-bridge automatically. After installing carla-ros-bridge's latest version the error have changed

[INFO] [1707395025.035411, 0.000000]: Trying to connect to localhost:2000
[INFO] [1707395025.623205, 0.000000]: Loading town '' (previous: 'Carla/Maps/Town01').
[ERROR] [1707395038.720427, 0.000000]: Error: time-out of 10000ms while waiting for the simulator, make sure the simulator is ready and connected to localhost:2000
[INFO] [1707395038.722018, 0.000000]: Shutting down...
Traceback (most recent call last):
  File "/opt/ros/noetic/lib/python3/dist-packages/rospy/core.py", line 572, in signal_shutdown
    h()
  File "/home/klrshak/carla-ros-bridge/catkin_ws/src/ros-bridge/carla_ros_bridge/src/carla_ros_bridge/bridge.py", line 349, in destroy
    self.shutdown.set()
AttributeError: 'CarlaRosBridge' object has no attribute 'shutdown'
================================================================================REQUIRED process [carla_ros_bridge-2] has died!
process has finished cleanly
log file: /home/klrshak/.ros/log/e594abce-c67c-11ee-a335-8951c7bcf672/carla_ros_bridge-2*.log
Initiating shutdown!
================================================================================
[carla_manual_control_ego_vehicle-5] killing on exit
[set_initial_pose_ego_vehicle-4] killing on exit
[carla_spawn_objects_klrshak_Inspiron_5344_8696946721438619238-3] killing on exit
[carla_ros_bridge-2] killing on exit

[KlrShaK]

Solved this issue by adding parameter -carla-server when running the command ./CarlaUE4.sh -quality-level=Low -preferNvidia -caral-server. I have tested with the launch scripts of carla-ros-bridge ( roslaunch carla_ros_bridge carla_ros_bridge_with_example_ego_vehicle.launch ) . I will close the issue after testing it with BehaviourMetric scripts

[sergiopaniego]

Sure! I’ll close the issue but you can reopen it if the issue persists

[ABD-01]

Hi! Looks like I'll be the unfortunate soul to reopen this issue. I am facing exactly this same issue with calra ros bridge.

I have installed carla_ros_bridge from source following this doc.

The issue is exactly what Title says. 20: Waiting for vehicles! was being printed endlessly i.e. stuck in the loop. So before testing behaviour_metrics, I ran carla ros bridge. The following error I followed this step Changed Carla version for bridge.py to 0.9.14

Now, the issue boiled down exactly to be same as KlrShaK's output My Error on running roslaunch carla_ros_bridge carla_ros_bridge.launch: I am running carla as mentioned: /CarlaUE4.sh -carla-server with the -carla-server parameter. -quality-level=Low parameter has no effect.

My Setup Information OS: Ubuntu 20.04.5 LTS Carla Version: 0.9.14 Python: 3.8 ROS Distro: noetic

[sergiopaniego]

We are using Carla 0.9.15 in this case.

What version of GPU do you have? Are you able to run CARLA with some of the examples they provide without carla-ros-bridge?

[ABD-01]

Yes, I knew about the Carla version. This one was a PC with 2 GPUs (total of 18 GB), unfortunately, it is a shared system so I won't be changing the Carla version. And yes I am able to run Carla smoothly without ros bridge. GPU Information:

I will update on this once I try running behaviour_metrics on my personal laptop (GTX 4GB 1650Ti).

[sergiopaniego]

Ok! That behavior is a little bit weird. I suggest that you review the log output generated by the ROS Nodes to understand further the problem. https://github.com/JdeRobot/BehaviorMetrics/blob/b7333abef48b2c506fc428836f3d1ac83590e5e1/behavior_metrics/utils/environment.py#L89

[ABD-01]

Tried different ways, and finally did rm -rf ~/carla-ros-bridge. And reinstalled again from the source. Followed the above steps and it is working now!

Thanks a lot 🙌

[sergiopaniego]

Nice!