model.py removing top of three code, cleanup

train.py

@@ -74,22 +74,23 @@ def prepare_directories_and_logger(output_directory, log_directory, rank):
         logger = None
     return logger
 
+
 def load_model(hparams):
     model = Tacotron2(hparams).cuda()
     model = batchnorm_to_float(model.half()) if hparams.fp16_run else model
 
-    tacotron_model = model
     if hparams.distributed_run:
         model = DistributedDataParallel(model)
     elif torch.cuda.device_count() > 1:
         model = DataParallel(model)
 
-    return model, tacotron
+    return model
+
 
 def warm_start_model(checkpoint_path, model):
     assert os.path.isfile(checkpoint_path)
     print("Warm starting model from checkpoint '{}'".format(checkpoint_path))
-    checkpoint_dict = torch.load(checkpoint_path)
+    checkpoint_dict = torch.load(checkpoint_path, map_location='cpu')
     model.load_state_dict(checkpoint_dict['state_dict'])
     return model
 
@@ -117,7 +118,7 @@ def save_checkpoint(model, optimizer, learning_rate, iteration, filepath):
 
 
 def validate(model, criterion, valset, iteration, batch_size, n_gpus,
-             collate_fn, logger, distributed_run, rank, batch_parser):
+             collate_fn, logger, distributed_run, rank):
     """Handles all the validation scoring and printing"""
     model.eval()
     with torch.no_grad():
@@ -128,7 +129,7 @@ def validate(model, criterion, valset, iteration, batch_size, n_gpus,
 
         val_loss = 0.0
         for i, batch in enumerate(val_loader):
-            x, y = batch_parser(batch)
+            x, y = model.parse_batch(batch)
             y_pred = model(x)
             loss = criterion(y_pred, y)
             reduced_val_loss = reduce_tensor(loss.data, n_gpus)[0] \
@@ -196,11 +197,11 @@ def train(output_directory, log_directory, checkpoint_path, warm_start, n_gpus,
                 param_group['lr'] = learning_rate
 
             model.zero_grad()
-            x, y = tacotron_model.parse_batch(batch)
+            x, y = model.parse_batch(batch)
             y_pred = model(x)
             loss = criterion(y_pred, y)
-            reduced_loss = reduce_tensor(loss.data, n_gpus).item() \
-                if hparams.distributed_run else loss.item()
+            reduced_loss = reduce_tensor(loss.data, n_gpus)[0] \
+                if hparams.distributed_run else loss.data[0]
 
             if hparams.fp16_run:
                 optimizer.backward(loss)
@@ -208,7 +209,7 @@ def train(output_directory, log_directory, checkpoint_path, warm_start, n_gpus,
             else:
                 loss.backward()
                 grad_norm = torch.nn.utils.clip_grad_norm(
-                    tacotron_model.parameters(), hparams.grad_clip_thresh)
+                    model.parameters(), hparams.grad_clip_thresh)
 
             optimizer.step()
 
@@ -225,7 +226,7 @@ def train(output_directory, log_directory, checkpoint_path, warm_start, n_gpus,
             if not overflow and (iteration % hparams.iters_per_checkpoint == 0):
                 reduced_val_loss = validate(
                     model, criterion, valset, iteration, hparams.batch_size,
-                    n_gpus, collate_fn, logger, hparams.distributed_run, rank, tacotron_model.parse_batch)
+                    n_gpus, collate_fn, logger, hparams.distributed_run, rank)
 
                 if rank == 0:
                     print("Validation loss {}: {:9f}  ".format(