parl.remote.exceptions.RemoteError: [PARL remote error when calling function __init__]:

[zienn]

我运行的默认的IMPALA算法，actor数量为2
运行环境：

显卡：mx150
cuda：10.02.89
paddlepaddle-gpu (1.6.3.post107)
parl (1.2.1)

错误如下：

[02-29 17:50:42 MainThread @train.py:148] Waiting for 2 remote actors to connect.
[02-29 17:50:42 MainThread @train.py:152] Remote actor count: 1
[02-29 17:50:42 MainThread @train.py:152] Remote actor count: 2
Exception in thread Thread-5:
Traceback (most recent call last):
  File "/home/xtq/anaconda3/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/home/xtq/anaconda3/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/xtq/PARL/examples/IMPALA/train.py", line 163, in run_remote_sample
    remote_actor = Actor(self.config)
  File "/home/xtq/anaconda3/lib/python3.6/site-packages/parl/remote/remote_decorator.py", line 127, in __init__
    raise RemoteError('__init__', traceback_str)
parl.remote.exceptions.RemoteError: [PARL remote error when calling function `__init__`]:
No module named 'atari_model'
traceback:
Traceback (most recent call last):
  File "/home/xtq/anaconda3/lib/python3.6/site-packages/parl/remote/job.py", line 298, in wait_for_connection
    cls = cloudpickle.loads(message[1])
ModuleNotFoundError: No module named 'atari_model'


Exception in thread Thread-4:
Traceback (most recent call last):
  File "/home/xtq/anaconda3/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/home/xtq/anaconda3/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/home/xtq/PARL/examples/IMPALA/train.py", line 163, in run_remote_sample
    remote_actor = Actor(self.config)
  File "/home/xtq/anaconda3/lib/python3.6/site-packages/parl/remote/remote_decorator.py", line 127, in __init__
    raise RemoteError('__init__', traceback_str)
parl.remote.exceptions.RemoteError: [PARL remote error when calling function `__init__`]:
No module named 'atari_model'
traceback:
Traceback (most recent call last):
  File "/home/xtq/anaconda3/lib/python3.6/site-packages/parl/remote/job.py", line 298, in wait_for_connection
    cls = cloudpickle.loads(message[1])
ModuleNotFoundError: No module named 'atari_model'

[zenghsh3]

你好，请问是按照文档说明运行的吗？

1. pip install parl
2. 启动xparl：xparl start --port 8010 --cpu_num 2 （如果是启动2个actor）
3. 下载PARL仓库到本地
4. 进入PARL/examples/IMPALA/目录，修改impala_config.py中actor数量，然后执行python train.py

看错误提示是运行train.py时，没有把本地atari_model.py发送到job运行环境里，但我们测试都是没出现过这个问题的。（或者你确认下train.py同级目录里是否有atari_model.py文件）

[zienn]

我之前在vscode里执行有这个问题，我又用命令行执行，就能正常运行了。

[TomorrowIsAnOtherDay]

@Termset 这个是编译器的工作目录和代码所在目录不一致的问题，导致这个问题在于PARL的设计是针对多机并行设计的，需要把当前工作目录的代码分发到不同机器上（在单机上也用同样的逻辑）。

---

@zenghsh3 越来越多的人使用vscode这种编译器了，我们的代码确实得要考虑下兼容vscode下的运行才行。下周一起讨论下：）