diff --git a/applications/ColossalChat/coati/distributed/grpo_consumer.py b/applications/ColossalChat/coati/distributed/grpo_consumer.py
index 5e109e1eb..40d362340 100644
--- a/applications/ColossalChat/coati/distributed/grpo_consumer.py
+++ b/applications/ColossalChat/coati/distributed/grpo_consumer.py
@@ -425,20 +425,6 @@ class GRPOConsumer(BaseConsumer):
                             kl = all_reduce_mean(torch.mean(torch.stack(kl)).to(loss.device), self.plugin).data
                             mean_kl.append(kl)
                         mean_loss.append(all_reduce_mean(loss, self.plugin).data)
-                        mini_batch_entropies.append(
-                            all_reduce_mean(
-                                (
-                                    (
-                                        (
-                                            entropy_from_logits(policy_model_logits[:, -num_action:])
-                                            * action_mask_forward_micro_batch
-                                        ).sum(-1)
-                                    )
-                                    / action_mask_forward_micro_batch.sum(-1)
-                                ).detach(),
-                                self.plugin,
-                            )
-                        )
                 else:
                     policy_model_logits = self.policy_model(
                         input_ids=input_ids_forward_micro_batch,
diff --git a/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py b/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
index ea04ae13c..8a710ec07 100644
--- a/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
+++ b/applications/ColossalChat/coati/distributed/zero_bubble/distributor.py
@@ -64,8 +64,10 @@ class Distributor:
                         )
                         self.profiler.exit(f"sync_model_consumer_pp_{i}")
                         self.weight_version[i] += 1
-                for i in range(self.consumer_pp_size):
-                    if signal.get(f"producer_{self.distributor_id}_pp_{i}", None) == "ready_sync_model":
+                if all(
+                    [signal.get(f"producer_{self.distributor_id}_pp_{i}", None) == "ready_sync_model" for i in range(self.consumer_pp_size)]
+                ):
+                    for i in range(self.consumer_pp_size):
                         self.profiler.enter(f"sync_model_producer_{self.distributor_id}_pp_{i}")
                         # Broadcast the model state dict to all producers
                         ray.get(
@@ -116,4 +118,4 @@ class Distributor:
                 ray.get(self.shared_signal_actor.set_signal.remote("distributor_weight_version", last_weight_version))
 
     def get_weight_version(self):
-        return min(self.weight_version)
+        return self.weight_version[0]
diff --git a/applications/ColossalChat/coati/distributed/zero_bubble/producer.py b/applications/ColossalChat/coati/distributed/zero_bubble/producer.py
index 31c314dd5..7179b1da4 100644
--- a/applications/ColossalChat/coati/distributed/zero_bubble/producer.py
+++ b/applications/ColossalChat/coati/distributed/zero_bubble/producer.py
@@ -244,6 +244,7 @@ class BaseProducer:
                                         f"producer_{self.producer_idx}_pp_{pp_idx}", "ready_sync_model"
                                     )
                                 )
+                            for pp_idx in range(self.consumer_pp_size):
                                 print(
                                     f"[P{self.producer_idx}] Sync model PP stage {pp_idx} episode {episode} step {(i + 1) // self.num_microbatches - 1}"
                                 )
diff --git a/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt b/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt
new file mode 100644
index 000000000..8c4fb8eed
--- /dev/null
+++ b/applications/ColossalChat/coati/distributed/zero_bubble/requirements.txt
@@ -0,0 +1,2 @@
+ray==2.49.2
+pygloo>=0.2.0  # you need to build from source: https://github.com/ray-project/pygloo  commit 82ae2d72222aefcac54a8e88995735ede3abe9cf   https://github.com/ray-project/pygloo/blob/main/README.md
\ No newline at end of file