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Fix checkpoint load path #2

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Fix checkpoint load path #2

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43 changes: 31 additions & 12 deletions learning/networks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -100,8 +100,16 @@ def save_checkpoint(self):
def load_checkpoint(self):
"""
Loads the checkpoint from the specified file.

Returns:
bool: True if the checkpoint was successfully loaded, False otherwise.
"""
self.load_state_dict(T.load(self.checkpoint_file))
if os.path.exists(self.checkpoint_file):
self.load_state_dict(T.load(self.checkpoint_file, map_location=self.device))
return True
else:
print(f"Checkpoint not found: {self.checkpoint_file}")
return False


class ActorNetwork(nn.Module):
Expand Down Expand Up @@ -192,8 +200,16 @@ def save_checkpoint(self):
def load_checkpoint(self):
"""
Loads the checkpoint from the specified file.

Returns:
bool: True if the checkpoint was successfully loaded, False otherwise.
"""
self.load_state_dict(T.load(self.checkpoint_file))
if os.path.exists(self.checkpoint_file):
self.load_state_dict(T.load(self.checkpoint_file, map_location=self.device))
return True
else:
print(f"Checkpoint not found: {self.checkpoint_file}")
return False


class Agent():
Expand Down Expand Up @@ -456,13 +472,16 @@ def load_model(self):
It attempts to load the weights for the actor, critics, and target networks.
If any of the loading operations fail, it prints an error message and continues training from scratch.
"""
try:
self.actor.load_checkpoint()
self.critic_1.load_checkpoint()
self.critic_2.load_checkpoint()
self.target_actor.load_checkpoint()
self.target_critic_1.load_checkpoint()
self.target_critic_2.load_checkpoint()
print("Sucessfully loaded all the models")
except:
print("Failed to laod models. Starting from Scratch ")
successes = [
self.actor.load_checkpoint(),
self.critic_1.load_checkpoint(),
self.critic_2.load_checkpoint(),
self.target_actor.load_checkpoint(),
self.target_critic_1.load_checkpoint(),
self.target_critic_2.load_checkpoint(),
]

if all(successes):
print("Successfully loaded all the models")
else:
print("Failed to load models. Starting from scratch")