diff --git a/TrackToLearn/algorithms/ddpg.py b/TrackToLearn/algorithms/ddpg.py
index e79eacd..67cb4fb 100644
--- a/TrackToLearn/algorithms/ddpg.py
+++ b/TrackToLearn/algorithms/ddpg.py
@@ -11,7 +11,7 @@
 from TrackToLearn.algorithms.shared.replay import OffPolicyReplayBuffer
 from TrackToLearn.algorithms.shared.utils import add_item_to_means
 from TrackToLearn.environments.env import BaseEnv
-
+from TrackToLearn.utils.torch_utils import get_device
 
 class DDPG(RLAlgorithm):
     """
@@ -44,7 +44,7 @@ def __init__(
         batch_size: int = 2**12,
         replay_size: int = 1e6,
         rng: np.random.RandomState = None,
-        device: torch.device = "cuda:0",
+        device: torch.device = get_device(),
     ):
         """
         Parameters
diff --git a/TrackToLearn/algorithms/rl.py b/TrackToLearn/algorithms/rl.py
index 5029d3b..1d79b7f 100644
--- a/TrackToLearn/algorithms/rl.py
+++ b/TrackToLearn/algorithms/rl.py
@@ -2,7 +2,7 @@
 import torch
 
 from TrackToLearn.environments.env import BaseEnv
-
+from TrackToLearn.utils.torch_utils import get_device
 
 class RLAlgorithm(object):
     """
@@ -18,7 +18,7 @@ def __init__(
         gamma: float = 0.99,
         batch_size: int = 10000,
         rng: np.random.RandomState = None,
-        device: torch.device = "cuda:0",
+        device: torch.device = get_device(),
     ):
         """
         Parameters
diff --git a/TrackToLearn/algorithms/sac.py b/TrackToLearn/algorithms/sac.py
index ba1d00e..cff8b26 100644
--- a/TrackToLearn/algorithms/sac.py
+++ b/TrackToLearn/algorithms/sac.py
@@ -7,7 +7,7 @@
 from TrackToLearn.algorithms.ddpg import DDPG
 from TrackToLearn.algorithms.shared.offpolicy import SACActorCritic
 from TrackToLearn.algorithms.shared.replay import OffPolicyReplayBuffer
-
+from TrackToLearn.utils.torch_utils import get_device
 
 class SAC(DDPG):
     """
@@ -41,7 +41,7 @@ def __init__(
         batch_size: int = 2**12,
         replay_size: int = 1e6,
         rng: np.random.RandomState = None,
-        device: torch.device = "cuda:0",
+        device: torch.device = get_device(),
     ):
         """ Initialize the algorithm. This includes the replay buffer,
         the policy and the target policy.
diff --git a/TrackToLearn/algorithms/sac_auto.py b/TrackToLearn/algorithms/sac_auto.py
index 80f860f..d669d71 100644
--- a/TrackToLearn/algorithms/sac_auto.py
+++ b/TrackToLearn/algorithms/sac_auto.py
@@ -9,7 +9,7 @@
 from TrackToLearn.algorithms.sac import SAC
 from TrackToLearn.algorithms.shared.offpolicy import SACActorCritic
 from TrackToLearn.algorithms.shared.replay import OffPolicyReplayBuffer
-
+from TrackToLearn.utils.torch_utils import get_device
 
 LOG_STD_MAX = 2
 LOG_STD_MIN = -20
@@ -46,7 +46,7 @@ def __init__(
         batch_size: int = 2**12,
         replay_size: int = 1e6,
         rng: np.random.RandomState = None,
-        device: torch.device = "cuda:0",
+        device: torch.device = get_device,
     ):
         """
         Parameters
diff --git a/TrackToLearn/algorithms/shared/replay.py b/TrackToLearn/algorithms/shared/replay.py
index c55fde4..dbd558d 100644
--- a/TrackToLearn/algorithms/shared/replay.py
+++ b/TrackToLearn/algorithms/shared/replay.py
@@ -2,9 +2,9 @@
 import torch
 
 from typing import Tuple
+from TrackToLearn.utils.torch_utils import get_device, get_device_str
 
-
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+device = get_device()
 
 
 class OffPolicyReplayBuffer(object):
@@ -33,16 +33,25 @@ def __init__(
         self.size = 0
 
         # Buffers "filled with zeros"
+        
+        
         self.state = torch.zeros(
-            (self.max_size, state_dim), dtype=torch.float32).pin_memory()
+            (self.max_size, state_dim), dtype=torch.float32)
         self.action = torch.zeros(
-            (self.max_size, action_dim), dtype=torch.float32).pin_memory()
+            (self.max_size, action_dim), dtype=torch.float32)
         self.next_state = torch.zeros(
-            (self.max_size, state_dim), dtype=torch.float32).pin_memory()
+            (self.max_size, state_dim), dtype=torch.float32)
         self.reward = torch.zeros(
-            (self.max_size, 1), dtype=torch.float32).pin_memory()
+            (self.max_size, 1), dtype=torch.float32)
         self.not_done = torch.zeros(
-            (self.max_size, 1), dtype=torch.float32).pin_memory()
+            (self.max_size, 1), dtype=torch.float32)
+
+        if get_device_str() == "cuda":
+            self.state = self.state.pin_memory()
+            self.action = self.action.pin_memory()
+            self.next_state = self.next_state.pin_memory()
+            self.reward = self.reward.pin_memory()
+            self.not_done = self.not_done.pin_memory()
 
     def add(
         self,
@@ -112,12 +121,19 @@ def sample(
         ind = torch.randperm(self.size, dtype=torch.long)[
             :min(self.size, batch_size)]
 
-        s = self.state.index_select(0, ind).pin_memory()
-        a = self.action.index_select(0, ind).pin_memory()
-        ns = self.next_state.index_select(0, ind).pin_memory()
-        r = self.reward.index_select(0, ind).squeeze(-1).pin_memory()
+        s = self.state.index_select(0, ind)
+        a = self.action.index_select(0, ind)
+        ns = self.next_state.index_select(0, ind)
+        r = self.reward.index_select(0, ind).squeeze(-1)
         d = self.not_done.index_select(0, ind).to(
-            dtype=torch.float32).squeeze(-1).pin_memory()
+            dtype=torch.float32).squeeze(-1)
+        
+        if get_device_str() == "cuda":
+            s = s.pin_memory()
+            a = a.pin_memory()
+            ns = ns.pin_memory()
+            r = r.pin_memory()
+            d = d.pin_memory()
 
         # Return tensors on the same device as the buffer in pinned memory
         return (s.to(device=self.device, non_blocking=True),
diff --git a/TrackToLearn/environments/env.py b/TrackToLearn/environments/env.py
index 163bc69..a241abd 100644
--- a/TrackToLearn/environments/env.py
+++ b/TrackToLearn/environments/env.py
@@ -34,6 +34,8 @@
 
 # from dipy.io.utils import get_reference_info
 
+def collate_fn(data):
+    return data
 
 class BaseEnv(object):
     """
@@ -84,9 +86,6 @@ def __init__(
             self.dataset_file = subject_data
             self.split = split_id
 
-            def collate_fn(data):
-                return data
-
             self.dataset = SubjectDataset(
                 self.dataset_file, self.split)
             self.loader = DataLoader(self.dataset, 1, shuffle=True,
diff --git a/TrackToLearn/oracles/oracle.py b/TrackToLearn/oracles/oracle.py
index f33d1ef..0614c8f 100644
--- a/TrackToLearn/oracles/oracle.py
+++ b/TrackToLearn/oracles/oracle.py
@@ -3,7 +3,10 @@
 from dipy.tracking.streamline import set_number_of_points
 
 from TrackToLearn.oracles.transformer_oracle import TransformerOracle
+from TrackToLearn.utils.torch_utils import get_device_str, get_device
+import contextlib
 
+autocast_context = torch.cuda.amp.autocast if torch.cuda.is_available() else contextlib.nullcontext
 
 class OracleSingleton:
     _self = None
@@ -15,7 +18,7 @@ def __new__(cls, *args, **kwargs):
         return cls._self
 
     def __init__(self, checkpoint: str, device: str, batch_size=4096):
-        self.checkpoint = torch.load(checkpoint)
+        self.checkpoint = torch.load(checkpoint, map_location=get_device())
 
         hyper_parameters = self.checkpoint["hyper_parameters"]
         # The model's class is saved in hparams
@@ -38,7 +41,7 @@ def predict(self, streamlines):
         N = len(streamlines)
         # Placeholders for input and output data
         placeholder = torch.zeros(
-            (self.batch_size, 127, 3), pin_memory=True)
+            (self.batch_size, 127, 3), pin_memory=get_device_str() == "cuda")
         result = torch.zeros((N), dtype=torch.float, device=self.device)
 
         # Get the first batch
@@ -70,7 +73,7 @@ def predict(self, streamlines):
                 # Put the directions in pinned memory
                 placeholder[:end-start] = torch.from_numpy(dirs)
 
-            with torch.cuda.amp.autocast():
+            with autocast_context():
                 with torch.no_grad():
                     predictions = self.model(input_data)
                     result[
diff --git a/TrackToLearn/runners/ttl_track.py b/TrackToLearn/runners/ttl_track.py
index 777b870..04fa720 100755
--- a/TrackToLearn/runners/ttl_track.py
+++ b/TrackToLearn/runners/ttl_track.py
@@ -23,6 +23,7 @@
 
 from TrackToLearn.experiment.experiment import Experiment
 from TrackToLearn.tracking.tracker import Tracker
+from TrackToLearn.utils.torch_utils import get_device
 
 # Define the example model paths from the install folder.
 # Hackish ? I'm not aware of a better solution but I'm
@@ -79,9 +80,7 @@ def __init__(
         self.compute_reward = False
         self.render = False
 
-        self.device = torch.device(
-            "cuda" if torch.cuda.is_available()
-            else "cpu")
+        self.device = get_device()
 
         self.fa_map = None
         if 'fa_map_file' in track_dto:
diff --git a/TrackToLearn/runners/ttl_track_from_hdf5.py b/TrackToLearn/runners/ttl_track_from_hdf5.py
index 9f70818..38ba2c4 100755
--- a/TrackToLearn/runners/ttl_track_from_hdf5.py
+++ b/TrackToLearn/runners/ttl_track_from_hdf5.py
@@ -23,7 +23,7 @@
     add_tractometer_args)
 from TrackToLearn.tracking.tracker import Tracker
 from TrackToLearn.experiment.experiment import Experiment
-
+from TrackToLearn.utils.torch_utils import get_device
 
 class TrackToLearnValidation(Experiment):
     """ TrackToLearn validing script. Should work on any model trained with a
@@ -98,8 +98,7 @@ def __init__(
 
         self.comet_experiment = None
 
-        self.device = torch.device(
-            "cuda" if torch.cuda.is_available() else "cpu")
+        self.device = get_device()
 
         self.random_seed = valid_dto['rng_seed']
         torch.manual_seed(self.random_seed)
diff --git a/TrackToLearn/searchers/sac_auto_searcher.py b/TrackToLearn/searchers/sac_auto_searcher.py
index d3ae92d..3622f80 100644
--- a/TrackToLearn/searchers/sac_auto_searcher.py
+++ b/TrackToLearn/searchers/sac_auto_searcher.py
@@ -5,9 +5,9 @@
 from TrackToLearn.trainers.sac_auto_train import (
     parse_args,
     SACAutoTrackToLearnTraining)
-
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-assert torch.cuda.is_available()
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
+device = get_device()
+assert_accelerator()
 
 
 def main():
diff --git a/TrackToLearn/searchers/sac_auto_searcher_oracle.py b/TrackToLearn/searchers/sac_auto_searcher_oracle.py
index 5b7fd4f..e0b749a 100644
--- a/TrackToLearn/searchers/sac_auto_searcher_oracle.py
+++ b/TrackToLearn/searchers/sac_auto_searcher_oracle.py
@@ -5,9 +5,9 @@
 from TrackToLearn.trainers.sac_auto_train import (
     parse_args,
     SACAutoTrackToLearnTraining)
-
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-assert torch.cuda.is_available()
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
+device = get_device()
+assert_accelerator()
 
 
 def main():
diff --git a/TrackToLearn/trainers/ddpg_train.py b/TrackToLearn/trainers/ddpg_train.py
index 14996e9..aa43c9c 100644
--- a/TrackToLearn/trainers/ddpg_train.py
+++ b/TrackToLearn/trainers/ddpg_train.py
@@ -9,9 +9,10 @@
 from TrackToLearn.algorithms.ddpg import DDPG
 from TrackToLearn.experiment.train import (
     add_training_args, TrackToLearnTraining)
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
 
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-assert torch.cuda.is_available()
+device = get_device()
+assert_accelerator()
 
 
 class DDPGTrackToLearnTraining(TrackToLearnTraining):
diff --git a/TrackToLearn/trainers/sac_auto_train.py b/TrackToLearn/trainers/sac_auto_train.py
index bbe7702..094b576 100755
--- a/TrackToLearn/trainers/sac_auto_train.py
+++ b/TrackToLearn/trainers/sac_auto_train.py
@@ -12,8 +12,8 @@
 from TrackToLearn.algorithms.sac_auto import SACAuto
 from TrackToLearn.trainers.train import (TrackToLearnTraining,
                                          add_training_args)
-
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
+from TrackToLearn.utils.torch_utils import get_device
+device = get_device()
 
 
 class SACAutoTrackToLearnTraining(TrackToLearnTraining):
diff --git a/TrackToLearn/trainers/sac_train.py b/TrackToLearn/trainers/sac_train.py
index dedf04f..cc7a3d3 100644
--- a/TrackToLearn/trainers/sac_train.py
+++ b/TrackToLearn/trainers/sac_train.py
@@ -16,9 +16,9 @@
 from TrackToLearn.experiment.train import (
     add_rl_args,
     TrackToLearnTraining)
-
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-assert torch.cuda.is_available()
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
+device = get_device()
+assert_accelerator()
 
 
 class SACTrackToLearnTraining(TrackToLearnTraining):
diff --git a/TrackToLearn/trainers/td3_train.py b/TrackToLearn/trainers/td3_train.py
index 690fbe2..b5832b3 100644
--- a/TrackToLearn/trainers/td3_train.py
+++ b/TrackToLearn/trainers/td3_train.py
@@ -16,9 +16,10 @@
 from TrackToLearn.experiment.train import (
     add_rl_args,
     TrackToLearnTraining)
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
 
-device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
-assert torch.cuda.is_available()
+device = get_device()
+assert_accelerator()
 
 
 class TD3TrackToLearnTraining(TrackToLearnTraining):
diff --git a/TrackToLearn/trainers/train.py b/TrackToLearn/trainers/train.py
index d33dd46..3f80c17 100644
--- a/TrackToLearn/trainers/train.py
+++ b/TrackToLearn/trainers/train.py
@@ -21,6 +21,7 @@
 from TrackToLearn.experiment.tractometer_validator import TractometerValidator
 from TrackToLearn.experiment.experiment import Experiment
 from TrackToLearn.tracking.tracker import Tracker
+from TrackToLearn.utils.torch_utils import get_device, assert_accelerator
 
 
 class TrackToLearnTraining(Experiment):
@@ -99,8 +100,8 @@ def __init__(
         self.comet_experiment = comet_experiment
         self.last_episode = 0
 
-        self.device = torch.device(
-            "cuda" if torch.cuda.is_available() else "cpu")
+        self.device = get_device()
+        
 
         self.use_comet = train_dto['use_comet']
 
@@ -353,8 +354,8 @@ def run(self):
         training loop
         """
 
-        assert torch.cuda.is_available(), \
-            "Training is only supported on CUDA devices."
+        assert_accelerator(), \
+            "Training is only supported with hardware accelerated devices."
 
         # Instantiate environment. Actions will be fed to it and new
         # states will be returned. The environment updates the streamline
diff --git a/TrackToLearn/utils/torch_utils.py b/TrackToLearn/utils/torch_utils.py
new file mode 100644
index 0000000..6e78ba4
--- /dev/null
+++ b/TrackToLearn/utils/torch_utils.py
@@ -0,0 +1,15 @@
+import torch
+
+def get_device():
+    if torch.cuda.is_available():
+        return torch.device("cuda")
+    elif torch.backends.mps.is_available():
+        return torch.device("mps")
+    else:
+        return torch.device("cpu")
+    
+def assert_accelerator():
+    assert torch.cuda.is_available() or torch.backends.mps.is_available()
+
+def get_device_str():
+    return str(get_device())