fix: accelerator module is not available on HPC pytorch version

CNN-model/main_cnn.py

@@ -8,7 +8,13 @@ from dataset_loaders import EnWik9DataSet, LoremIpsumDataset, Dataset
 from trainers import OptunaTrainer, Trainer, FullTrainer
 
 BATCH_SIZE = 64
-DEVICE = torch.accelerator.current_accelerator().type if torch.accelerator.is_available() else "cpu"
+
+if torch.cuda.is_available():
+    DEVICE = "cuda"
+elif torch.backends.mps.is_available():
+    DEVICE = "mps"
+else:
+    DEVICE = "cpu"
 
 # hyper parameters
 context_length = 128