Merge pull request #1 from huggingface/multi-gpu-support

Create DataParallel model if several GPUs

extract_features_pytorch.py

@@ -249,6 +249,9 @@ def main():
     if args.init_checkpoint is not None:
         model.load_state_dict(torch.load(args.init_checkpoint, map_location='cpu'))
     model.to(device)
+    
+    if n_gpu > 1:
+        model = nn.DataParallel(model)
 
     all_input_ids = torch.tensor([f.input_ids for f in features], dtype=torch.long)
     all_input_mask = torch.tensor([f.input_mask for f in features], dtype=torch.long)

run_classifier_pytorch.py

@@ -482,6 +482,9 @@ def main():
     if args.init_checkpoint is not None:
         model.bert.load_state_dict(torch.load(args.init_checkpoint, map_location='cpu'))
     model.to(device)
+    
+    if n_gpu > 1:
+        model = torch.nn.DataParallel(model)
 
     optimizer = BERTAdam([{'params': [p for n, p in model.named_parameters() if n != 'bias'], 'l2': 0.01},
                           {'params': [p for n, p in model.named_parameters() if n == 'bias'], 'l2': 0.}

run_squad_pytorch.py

@@ -795,6 +795,9 @@ def main():
     if args.init_checkpoint is not None:
         model.bert.load_state_dict(torch.load(args.init_checkpoint, map_location='cpu'))
     model.to(device)
+    
+    if n_gpu > 1:
+        model = torch.nn.DataParallel(model)
 
     optimizer = BERTAdam([{'params': [p for n, p in model.named_parameters() if n != 'bias'], 'l2': 0.01},
                           {'params': [p for n, p in model.named_parameters() if n == 'bias'], 'l2': 0.}