diff --git a/README.md b/README.md
index e2feb9f..5292e0c 100644
--- a/README.md
+++ b/README.md
@@ -184,7 +184,7 @@ Note: Get address ip and port information from ray head.
 Here is an example to run the server with ray for llama2 7B model:
 
 ```bash
-python run_server_with_ray.py --tpu_chips=16 -model_name=$model_name --size=7b --batch_size=96 --max_cache_length=2048 --quantize_weights=$quantize --quantize_type=$quantize_type --quantize_kv_cache=$quantize --checkpoint_path=$output_ckpt_dir   --tokenizer_path=$tokenizer_path --sharding_config="default_shardings/llama.yaml"
+python run_server_with_ray.py --tpu_chips=16 --num_hosts=4 --worker_chips=4 -model_name=$model_name          --size=7b --batch_size=96 --max_cache_length=2048 --quantize_weights=$quantize --quantize_type=$quantize_type --quantize_kv_cache=$quantize --checkpoint_path=$output_ckpt_dir   --tokenizer_path=$tokenizer_path --sharding_config="default_shardings/llama.yaml"
 ```
 
 # Run benchmark
diff --git a/install_everything.sh b/install_everything.sh
index 2fcf757..f404ef6 100644
--- a/install_everything.sh
+++ b/install_everything.sh
@@ -29,7 +29,7 @@ pip install tensorflow-text
 pip install tensorflow
 pip install huggingface_hub
 
-pip install ray[default]==2.22.0
+pip install ray[default]==2.33.0
 # torch cpu
 pip install torch==2.3.1+cpu --index-url https://download.pytorch.org/whl/cpu
 pip install tensorflow flatbuffers absl-py sentencepiece seqio google-cloud-storage 
diff --git a/jetstream_pt/ray_engine.py b/jetstream_pt/ray_engine.py
index 8a091b3..dbc1d48 100644
--- a/jetstream_pt/ray_engine.py
+++ b/jetstream_pt/ray_engine.py
@@ -215,6 +215,8 @@ def create_pytorch_ray_engine(
     sharding_config=None,
     is_disaggregated: bool = False,
     num_hosts: int = 0,
+    worker_chips: int = 0,
+    tpu_chips: int = 0,
     decode_pod_slice_name: str = None,
     enable_jax_profiler: bool = False,
     jax_profiler_port: int = 9999,
@@ -230,9 +232,8 @@ def create_pytorch_ray_engine(
     )
   ray.init(ignore_reinit_error=True)
   pod_name = tpu.get_current_pod_name()
-  num_hosts = (
-      num_hosts if is_disaggregated else tpu.get_current_pod_worker_count()
-  )
+  num_hosts = num_hosts if num_hosts > 0 else tpu.get_current_pod_worker_count()
+  worker_chips = worker_chips if worker_chips > 0 else 4
   print(f"pod_name:{pod_name}, number of host: {num_hosts}")
   assert (
       pod_name is not None
@@ -240,9 +241,13 @@ def create_pytorch_ray_engine(
   assert (
       num_hosts > 0
   ), f"num_hosts (current value {num_hosts}) should be a positive number"
+  assert (
+      num_hosts * worker_chips == tpu_chips
+  ), f"num_hosts:{num_hosts} * worker_chips: {worker_chips} not equal to tpu_chips: {tpu_chips}"
+
   # pylint: disable-next=all
   engine_worker_with_tpu_resource = PyTorchRayWorker.options(
-      resources={"TPU": 4},
+      resources={"TPU": worker_chips},
       runtime_env=RuntimeEnv(env_vars={"JAX_PLATFORMS": "tpu,cpu"}),
   )
   engine_workers = []
diff --git a/run_interactive_multiple_host.py b/run_interactive_multiple_host.py
index 9cb364f..24b2798 100644
--- a/run_interactive_multiple_host.py
+++ b/run_interactive_multiple_host.py
@@ -24,6 +24,18 @@
 from jetstream_pt import ray_engine
 from jetstream_pt.config import FLAGS
 
+_NUM_HOSTS = flags.DEFINE_integer(
+    "num_hosts", 0, "Number of TPU host", required=False
+)
+
+_WORKER_CHIPS = flags.DEFINE_integer(
+    "worker_chips", 4, "Number of TPU chips per worker", required=False
+)
+
+_TPU_CHIPS = flags.DEFINE_integer(
+    "tpu_chips", 4, "All devices TPU chips", required=False
+)
+
 
 def create_engine():
   """create a pytorch engine"""
@@ -43,6 +55,9 @@ def create_engine():
       quantize_kv=FLAGS.quantize_kv_cache,
       max_cache_length=FLAGS.max_cache_length,
       sharding_config=FLAGS.sharding_config,
+      num_hosts=_NUM_HOSTS.value,
+      worker_chips=_WORKER_CHIPS.value,
+      tpu_chips=_TPU_CHIPS,
   )
 
   print("Initialize engine", time.perf_counter() - start)
diff --git a/run_server_with_ray.py b/run_server_with_ray.py
index de3bdf2..03489e1 100644
--- a/run_server_with_ray.py
+++ b/run_server_with_ray.py
@@ -34,7 +34,7 @@
     "available servers",
 )
 flags.DEFINE_integer("prometheus_port", 0, "")
-flags.DEFINE_integer("tpu_chips", 16, "device tpu_chips")
+flags.DEFINE_integer("tpu_chips", 16, "all devices tpu_chips")
 
 flags.DEFINE_bool("enable_jax_profiler", False, "enable jax profiler")
 flags.DEFINE_integer("jax_profiler_port", 9999, "port of JAX profiler server")
@@ -43,7 +43,11 @@
     "is_disaggregated", False, "Disaggregated serving if it's True"
 )
 
-flags.DEFINE_integer("num_hosts", 4, "Number of TPU host", required=False)
+flags.DEFINE_integer("num_hosts", 0, "Number of TPU host", required=False)
+
+flags.DEFINE_integer(
+    "worker_chips", 4, "Number of TPU chips per worker", required=False
+)
 
 flags.DEFINE_string("decode_pod_slice_name", "", "Decode pod slice name")
 
@@ -68,6 +72,9 @@ def create_engine():
       sharding_config=FLAGS.sharding_config,
       enable_jax_profiler=FLAGS.enable_jax_profiler,
       jax_profiler_port=FLAGS.jax_profiler_port,
+      num_hosts=FLAGS.num_hosts,
+      worker_chips=FLAGS.worker_chips,
+      tpu_chips=FLAGS.tpu_chips,
   )
 
   print("Initialize engine", time.perf_counter() - start)