tdpeuter/2026SEL3-project-Brittle_Star_Controller_Modularity
tdpeuter/2026SEL3-project-Brittle_Star_Controller_Modularity
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fix: adapted checkpoint eval to handle decentralized models

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This commit is contained in:
Jona Reynaert 2026-05-09 15:54:35 +02:00
parent 2594c53d49
commit d0e40db648
2 changed files with 15 additions and 4 deletions
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10
src/brittle_star_project/evaluation/evaluate_mjx.py
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@ -52,6 +52,7 @@ def build_eval_rollout_fn(
obs_processor: Callable,
sensor_apply: Callable,
actor_apply: Callable,
message_passer_apply: Callable | None = None,
action_low: jnp.ndarray,
action_high: jnp.ndarray,
reward_fn: Callable,
@ -67,6 +68,9 @@ def build_eval_rollout_fn(
returned by ``create_obs_processor``.
sensor_apply: The sensor network's ``apply`` method (JIT-compiled).
actor_apply: The actor network's ``apply`` method (JIT-compiled).
message_passer_apply: Optional message-passing module apply method.
When provided, it is applied between the sensor and actor, using
``params["message_passer_params"]``.
action_low: Per-joint action lower bound (JAX array, shape ``(action_dim,)``).
action_high: Per-joint action upper bound (JAX array, shape ``(action_dim,)``).
reward_fn: Shaped reward function with signature
@ -101,10 +105,14 @@ def build_eval_rollout_fn(
obs = obs_processor(state.observations)
hidden = sensor_apply(params["sensor_params"], obs)
if message_passer_apply is not None:
mp_params = params["message_passer_params"]
hidden = jax.vmap(lambda x: message_passer_apply(mp_params, x))(hidden)
mean, _log_std = actor_apply(params["actor_params"], hidden)
# Deterministic action: use the actor mean, no exploration noise.
action = jnp.clip(mean, action_low, action_high)
flat_mean = mean.reshape(mean.shape[0], -1)
action = jnp.clip(flat_mean, action_low, action_high)
next_state = step_1(state=state, action=action)
shaped_reward = reward_fn(state, next_state)

9
src/brittle_star_project/trainers/PPOTrainer.py
View file

@ -30,8 +30,8 @@ from brittle_star_project.MLPs.mlps import (
MessagePasser,
OneDenseLayerMLP,
Storage,
build_adjacency,
)
from brittle_star_project.MLPs.adjancency_builder import build_adjacency
from brittle_star_project.ppo import PPO
from brittle_star_project.environment import MorphMode
from brittle_star_project.utils import logged_jit
@ -901,8 +901,11 @@ class PPOTrainer:
self._eval_fn = build_eval_rollout_fn(
env=self.env,
obs_processor=self.obs_processor,
sensor_apply=self.sensor.apply,
actor_apply=self.actor.apply,
sensor_apply=lambda p, x: apply_per_node(self.sensor, p, x),
actor_apply=lambda p, x: apply_per_node(self.actor, p, x),
message_passer_apply=(
None if self.message_passer is None else self.message_passer.apply
),
action_low=self._action_low,
action_high=self._action_high,
reward_fn=reward_fn,