Launching multiple simulator sessions

[Ali-Younis]

Hi,

Doesn't donkeycar simulator support the launch of multiple sessions the same time? I'm trying to train a reinforcement learning model on multiple environments (2 for training and 1 for evaluation). However, I'm getting the following error, though I'm establishing sessions on different ports: 9001, 9002, 9003

Facing this issue in both v4.5.1 and v.5.2.dev3.

Error as following:

Exception: [Errno 54] Connection reset by peer

Exception in thread Thread-2 (proc_msg):

Traceback (most recent call last):

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 101, in proc_msg

data = s.recv(1024 * 256)

^^^^^^^^^^^^^^^^^^

ConnectionResetError: [Errno 54] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 1045, in _bootstrap_inner

self.run()

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 982, in run

self._target(*self._args, **self._kwargs)

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 153, in proc_msg

self.on_msg_recv({"msg_type": "aborted"})

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/sim_client.py", line 47, in on_msg_recv

self.msg_handler.on_recv_message(json_obj)

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/envs/donkey_sim.py", line 390, in on_recv_message

self.fnsmsg_type

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/envs/donkey_sim.py", line 202, in on_abort

self.client.stop()

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 74, in stop

self.th.join()

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 1116, in join

raise RuntimeError("cannot join current thread")

RuntimeError: cannot join current thread

Exception: [Errno 54] Connection reset by peer

Exception in thread Thread-1 (proc_msg):

Traceback (most recent call last):

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 101, in proc_msg

data = s.recv(1024 * 256)

^^^^^^^^^^^^^^^^^^

ConnectionResetError: [Errno 54] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 1045, in _bootstrap_inner

self.run()

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 982, in run

self._target(*self._args, **self._kwargs)

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 153, in proc_msg

self.on_msg_recv({"msg_type": "aborted"})

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/sim_client.py", line 47, in on_msg_recv

self.msg_handler.on_recv_message(json_obj)

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/envs/donkey_sim.py", line 390, in on_recv_message

self.fnsmsg_type

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/envs/donkey_sim.py", line 202, in on_abort

self.client.stop()

File "XXXXFILE_NAMEXXXXX/projects/gym-donkeycar/gym_donkeycar/core/client.py", line 74, in stop

self.th.join()

File "/opt/anaconda3/envs/donkey_2/lib/python3.11/threading.py", line 1116, in join

raise RuntimeError("cannot join current thread")

RuntimeError: cannot join current thread

BR