diff --git a/docs/source/examples/example_model.py b/docs/source/examples/example_model.py
index 3209794d80..e7caed4bef 100644
--- a/docs/source/examples/example_model.py
+++ b/docs/source/examples/example_model.py
@@ -79,7 +79,6 @@ class ExampleModel(RootModule):
         })
         return output
 
-
     def validation_step(self, data_batch, batch_i):
         """
         Called inside the validation loop
diff --git a/pytorch_lightning/pt_overrides/override_data_parallel.py b/pytorch_lightning/pt_overrides/override_data_parallel.py
index 55540f9a20..19470106d7 100644
--- a/pytorch_lightning/pt_overrides/override_data_parallel.py
+++ b/pytorch_lightning/pt_overrides/override_data_parallel.py
@@ -3,6 +3,7 @@ from torch.nn import DataParallel
 import threading
 import torch
 from torch.cuda._utils import _get_device_index
+import pdb
 
 
 def get_a_var(obj):
@@ -82,6 +83,7 @@ def parallel_apply(modules, inputs, kwargs_tup=None, devices=None):
             with lock:
                 results[i] = e
 
+    pdb.set_trace()
     if len(modules) > 1:
         threads = [threading.Thread(target=_worker,
                                     args=(i, module, input, kwargs, device))