idealboy commented on issue #7396: importerror: no module named Union
URL: 
https://github.com/apache/incubator-mxnet/issues/7396#issuecomment-321223491
 
 
   Exception in thread Thread-4:
   Traceback (most recent call last):
     File "/data/anaconda/lib/python2.7/threading.py", line 810, in 
__bootstrap_inner
       self.run()
     File "/data/anaconda/lib/python2.7/threading.py", line 763, in run
       self.__target(*self.__args, **self.__kwargs)
     File 
"/data/work/mxnetfollow-dist/tools/../dmlc-core/tracker/dmlc_tracker/ssh.py", 
line 60, in run
       subprocess.check_call(prog, shell = True)
     File "/data/anaconda/lib/python2.7/subprocess.py", line 540, in check_call
       raise CalledProcessError(retcode, cmd)
   CalledProcessError: Command 'ssh -o StrictHostKeyChecking=no 10.15.133.82 -p 
22 'export LD_LIBRARY_PATH
   
   export DMLC_SERVER_ID=1; export DMLC_WORKER_ID=0; export 
DMLC_PS_ROOT_URI=10.15.240.189; export DMLC_ROLE=worker; export 
DMLC_PS_ROOT_PORT=9118; export DMLC_NUM_WORKER=2; export DMLC_NUM_SERVER=2; cd 
/tmp/mxnet; python train_mnist.py --network lenet --gpus 0,1 --kv-store 
dist_sync'' returned non-zero exit status 255
   
   
   
   
   
   
   When training on dist-sync? the error occurs? why? Thank you very much
   
   
 
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