Fix deepspeed for single GPU (#187)

sparse_autoencoder/train/pipeline.py

@@ -241,7 +241,7 @@ def train_autoencoder(
         ] = torch.zeros(
             (self.n_components, self.n_learned_features),
             dtype=torch.int64,
-            device=autoencoder_device,
+            device=torch.device("cpu"),
         )
 
         for store_batch in activations_dataloader:
@@ -274,7 +274,7 @@ def train_autoencoder(
             # Store count of how many neurons have fired
             with torch.no_grad():
                 fired = learned_activations > 0
-                learned_activations_fired_count.add_(fired.sum(dim=0))
+                learned_activations_fired_count.add_(fired.sum(dim=0).cpu())
 
             # Backwards pass
             total_loss.backward()

sparse_autoencoder/train/sweep.py

@@ -128,6 +128,9 @@ def setup_autoencoder_optimizer_scheduler(
             model=model,
             optimizer=optim,
             lr_scheduler=lr_scheduler,  # type: ignore
+            config={
+                "train_batch_size": hyperparameters["pipeline"]["train_batch_size"],
+            },
         )
 
         return (model_engine, optimizer_engine, scheduler)  # type: ignore

sparse_autoencoder/train/utils/get_model_device.py

@@ -1,9 +1,11 @@
 """Get the device that the model is on."""
+from deepspeed import DeepSpeedEngine
 import torch
 from torch.nn import Module
+from torch.nn.parallel import DataParallel
 
 
-def get_model_device(model: Module) -> torch.device:
+def get_model_device(model: Module | DataParallel | DeepSpeedEngine) -> torch.device:
     """Get the device on which a PyTorch model is on.
 
     Args:
@@ -15,6 +17,10 @@ def get_model_device(model: Module) -> torch.device:
     Raises:
         ValueError: If the model has no parameters.
     """
+    # Deepspeed models already have a device property, so just return that
+    if hasattr(model, "device"):
+        return model.device
+
     # Check if the model has parameters
     if len(list(model.parameters())) == 0:
         exception_message = "The model has no parameters."