diff --git a/example_trainer/README.md b/example_trainer/README.md
index a32b552b..7531538c 100644
--- a/example_trainer/README.md
+++ b/example_trainer/README.md
@@ -249,10 +249,11 @@ run-api --port 8001
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name $MODEL \
     --env.use_wandb=False \
+    --env.rollout_server_url http://localhost:8001 \
     --openai.model_name $MODEL \
     --openai.base_url http://localhost:9001/v1 \
     --openai.server_type vllm \
-    --server.port 8001
+    --slurm false
 
 # Terminal 3: Trainer (manages its own vLLM)
 CUDA_VISIBLE_DEVICES=0,1 python -m example_trainer.grpo \
@@ -280,10 +281,11 @@ CUDA_VISIBLE_DEVICES=2 python example_trainer/vllm_api_server.py \
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name $MODEL \
     --env.use_wandb=False \
+    --env.rollout_server_url http://localhost:8002 \
     --openai.model_name $MODEL \
     --openai.base_url http://localhost:9002/v1 \
     --openai.server_type vllm \
-    --server.port 8002
+    --slurm false
 
 # Terminal 7: Trainer (attaches to vLLM)
 CUDA_VISIBLE_DEVICES=2 python -m example_trainer.grpo \
@@ -312,10 +314,11 @@ CUDA_VISIBLE_DEVICES=4 python example_trainer/vllm_api_server.py \
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name $MODEL \
     --env.use_wandb=False \
+    --env.rollout_server_url http://localhost:8003 \
     --openai.model_name $MODEL \
     --openai.base_url http://localhost:9003/v1 \
     --openai.server_type vllm \
-    --server.port 8003
+    --slurm false
 
 # Terminal 11: Trainer
 CUDA_VISIBLE_DEVICES=5 python -m example_trainer.grpo \
diff --git a/example_trainer/scripts/run_comparison.sh b/example_trainer/scripts/run_comparison.sh
index c23351af..7f9ebb8b 100755
--- a/example_trainer/scripts/run_comparison.sh
+++ b/example_trainer/scripts/run_comparison.sh
@@ -192,10 +192,11 @@ echo "  Starting environment server..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:8001" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:9001/v1" \
     --openai.server_type vllm \
-    --server.port 8001 \
+    --slurm false \
     > $LOGDIR/env_legacy.log 2>&1 &
 LEGACY_ENV_PID=$!
 echo "  ✓ Environment server started (PID: $LEGACY_ENV_PID)"
@@ -233,10 +234,11 @@ echo "  Starting environment server..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:8002" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:9002/v1" \
     --openai.server_type vllm \
-    --server.port 8002 \
+    --slurm false \
     > $LOGDIR/env_shared.log 2>&1 &
 SHARED_ENV_PID=$!
 echo "  ✓ Environment server started (PID: $SHARED_ENV_PID)"
@@ -293,10 +295,11 @@ echo "  Starting environment server..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:8003" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:9003/v1" \
     --openai.server_type vllm \
-    --server.port 8003 \
+    --slurm false \
     > $LOGDIR/env_lora.log 2>&1 &
 LORA_ENV_PID=$!
 echo "  ✓ Environment server started (PID: $LORA_ENV_PID)"
diff --git a/example_trainer/scripts/run_concurrent_tests.sh b/example_trainer/scripts/run_concurrent_tests.sh
index 3b8b96a4..c9779b02 100644
--- a/example_trainer/scripts/run_concurrent_tests.sh
+++ b/example_trainer/scripts/run_concurrent_tests.sh
@@ -139,10 +139,11 @@ echo "[3/6] Starting LoRA GSM8k environment..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:${LORA_GSM8K_PORT}" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:${LORA_VLLM_PORT}/v1" \
     --openai.server_type vllm \
-    --server.port $LORA_GSM8K_PORT \
+    --slurm false \
     > "${LOG_DIR}/lora_gsm8k.log" 2>&1 &
 LORA_GSM8K_PID=$!
 echo "  PID: $LORA_GSM8K_PID"
@@ -152,10 +153,11 @@ echo "[4/6] Starting Single-Copy GSM8k environment..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:${SINGLE_COPY_GSM8K_PORT}" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:${SINGLE_COPY_VLLM_PORT}/v1" \
     --openai.server_type vllm \
-    --server.port $SINGLE_COPY_GSM8K_PORT \
+    --slurm false \
     > "${LOG_DIR}/single_copy_gsm8k.log" 2>&1 &
 SINGLE_COPY_GSM8K_PID=$!
 echo "  PID: $SINGLE_COPY_GSM8K_PID"
diff --git a/example_trainer/scripts/test_single_copy_mode.sh b/example_trainer/scripts/test_single_copy_mode.sh
index 08bbc630..0a76e1e7 100644
--- a/example_trainer/scripts/test_single_copy_mode.sh
+++ b/example_trainer/scripts/test_single_copy_mode.sh
@@ -82,10 +82,11 @@ echo "[2/4] Starting GSM8k environment..."
 python -u environments/gsm8k_server.py serve \
     --env.tokenizer_name "$MODEL" \
     --env.use_wandb=False \
+    --env.rollout_server_url "http://localhost:${GSM8K_PORT}" \
     --openai.model_name "$MODEL" \
     --openai.base_url "http://localhost:${VLLM_PORT}/v1" \
     --openai.server_type vllm \
-    --server.port $GSM8K_PORT \
+    --slurm false \
     > "${LOG_DIR}/gsm8k.log" 2>&1 &
 
 echo "Waiting for GSM8k (10s)..."