added option to change default tensor

pytorch_lightning/models/trainer.py

@@ -219,13 +219,13 @@ class Trainer(TrainerIO):
         # filter out the weights that were done on gpu so we can load on good old cpus
         self.optimizers = model.configure_optimizers()
 
-        pdb.set_trace()
         if self.use_amp:
             # An example
             self.model, optimizer = amp.initialize(
                 self.model, self.optimizers[0], opt_level="O2",
                 keep_batchnorm_fp32=True, loss_scale="dynamic"
             )
+            pdb.set_trace()
             self.optimizers[0] = optimizer
             model.trainer = self