added reduce ddp results on eval

Lightning-AI · Jun 30, 2020 · 069a8a3 · 069a8a3
1 parent 9f1ed61
commit 069a8a3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pytorch_lightning/trainer/evaluation_loop.py b/pytorch_lightning/trainer/evaluation_loop.py
@@ -354,7 +354,7 @@ def _evaluate(
 
     def reduce_eval_ddp(self, eval_results):
         # ignore bad inputs
-        if len(eval_results) or eval_results is None:
+        if eval_results is None or len(eval_results) == 0:
             return
 
         for k, v in eval_results.items():