Update SB3 and remove gSDE resampling (#251)

Author: araffin

Diff for: Makefile

@@ -14,7 +14,7 @@ lint:
 	# see https://www.flake8rules.com/
 	ruff check ${LINT_PATHS} --select=E9,F63,F7,F82 --output-format=full
 	# exit-zero treats all errors as warnings.
-	ruff check ${LINT_PATHS} --exit-zero
+	ruff check ${LINT_PATHS} --exit-zero --output-format=concise
 
 format:
 	# Sort imports

Diff for: docs/misc/changelog.rst

@@ -3,6 +3,32 @@
 Changelog
 ==========
 
+
+Release 2.4.0a4 (WIP)
+--------------------------
+
+Breaking Changes:
+^^^^^^^^^^^^^^^^^
+- Upgraded to Stable-Baselines3 >= 2.4.0
+
+New Features:
+^^^^^^^^^^^^^
+
+Bug Fixes:
+^^^^^^^^^^
+
+Deprecations:
+^^^^^^^^^^^^^
+
+Others:
+^^^^^^^
+- Updated PyTorch version on CI to 2.3.1
+- Remove unnecessary SDE noise resampling in PPO/TRPO update
+
+Documentation:
+^^^^^^^^^^^^^^
+
+
 Release 2.3.0 (2024-03-31)
 --------------------------
 

Diff for: sb3_contrib/ppo_recurrent/ppo_recurrent.py

@@ -342,10 +342,6 @@ def train(self) -> None:
                 # Convert mask from float to bool
                 mask = rollout_data.mask > 1e-8
 
-                # Re-sample the noise matrix because the log_std has changed
-                if self.use_sde:
-                    self.policy.reset_noise(self.batch_size)
-
                 values, log_prob, entropy = self.policy.evaluate_actions(
                     rollout_data.observations,
                     actions,

Diff for: sb3_contrib/trpo/trpo.py

@@ -261,11 +261,6 @@ def train(self) -> None:
                 # Convert discrete action from float to long
                 actions = rollout_data.actions.long().flatten()
 
-            # Re-sample the noise matrix because the log_std has changed
-            if self.use_sde:
-                # batch_size is only used for the value function
-                self.policy.reset_noise(actions.shape[0])
-
             with th.no_grad():
                 # Note: is copy enough, no need for deepcopy?
                 # If using gSDE and deepcopy, we need to use `old_distribution.distribution`

Diff for: sb3_contrib/version.txt

@@ -1 +1 @@
-2.3.0
+2.4.0a4

Diff for: setup.py

@@ -65,7 +65,7 @@
     packages=[package for package in find_packages() if package.startswith("sb3_contrib")],
     package_data={"sb3_contrib": ["py.typed", "version.txt"]},
     install_requires=[
-        "stable_baselines3>=2.3.0,<3.0",
+        "stable_baselines3>=2.4.0a4,<3.0",
     ],
     description="Contrib package of Stable Baselines3, experimental code.",
     author="Antonin Raffin",