fix ray test in nano #5128
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fix ray test in nano #5128
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LGTM |
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Description
the default value of
num_processesargument ofTraineris 1, and the trainer won't use distributed backend whennum_processes==1, so we need to set itin addition, fix the bug that the test of ray backend doesn't set the
PYTHONPATHenvironment variable and ray backend doesn't pass this environment variable to subprocesses