Set LOCAL_RANK in script (#781)

* Set LOCAL_RANK in script.
Fix multiple checkpoint download bug
Signed-off-by: innerlee <363664470@qq.com>

* beautify
Signed-off-by: innerlee <363664470@qq.com>

tools/test.py

 import argparse
+import os
 import os.path as osp
 import shutil
 import tempfile
@@ -119,6 +120,8 @@ def parse_args():
         help='job launcher')
     parser.add_argument('--local_rank', type=int, default=0)
     args = parser.parse_args()
+    if 'LOCAL_RANK' not in os.environ:
+        os.environ['LOCAL_RANK'] = str(args.local_rank)
     return args
 
 

tools/train.py

 from __future__ import division
 
 import argparse
+import os
 from mmcv import Config
 
 from mmdet import __version__
@@ -35,6 +36,8 @@ def parse_args():
         help='job launcher')
     parser.add_argument('--local_rank', type=int, default=0)
     args = parser.parse_args()
+    if 'LOCAL_RANK' not in os.environ:
+        os.environ['LOCAL_RANK'] = str(args.local_rank)
 
     return args