diff --git a/internlm/initialize/launch.py b/internlm/initialize/launch.py
index bea5806..e2be1fe 100644
--- a/internlm/initialize/launch.py
+++ b/internlm/initialize/launch.py
@@ -2,10 +2,7 @@
 # -*- encoding: utf-8 -*-
 
 import argparse
-import copy
 import os
-import re
-import socket
 from pathlib import Path
 from typing import Dict, Union
 
@@ -482,62 +479,14 @@ def get_config_value(config, key, defalut):
     return value
 
 
-def get_node_hostnames(nodes: str):
-    hostnames = []
-
-    tmp_nodelist = copy.deepcopy(nodes)
-    tmp_nodelist = tmp_nodelist.replace(" ", "")
-
-    tmp_res = re.search(r"\[[\d\-,]+\]", tmp_nodelist)
-    while tmp_res:
-        tmp_res2 = re.search(",", tmp_nodelist)
-        if tmp_res2 and tmp_res2.start() < tmp_res.start():
-            tmp_nodelist2 = tmp_nodelist.split(",")
-            count = 0
-            while count < len(tmp_nodelist2):
-                if re.search(r"\[", tmp_nodelist2[count]):
-                    break
-                hostnames.append(tmp_nodelist2[count])
-                count += 1
-            tmp_nodelist = ",".join(tmp_nodelist2[count:])
-            tmp_res = re.search(r"\[[\d\-,]+\]", tmp_nodelist)
-        node_range = tmp_nodelist[tmp_res.start() : tmp_res.end()]
-        prefix = tmp_nodelist[: tmp_res.start()].replace(",", "")
-
-        node_range = re.sub(r"[\[\]]", "", node_range)
-
-        tmplist = node_range.split(",")
-
-        pattern1 = r"^\d+$"
-        pattern2 = r"^\d+-\d+$"
-
-        for tmpiter in tmplist:
-            if re.match(pattern1, tmpiter):
-                hostnames.append(prefix + tmpiter)
-            elif re.match(pattern2, tmpiter):
-                begin, end = int(tmpiter.split("-")[0]), int(tmpiter.split("-")[1])
-                hostnames.extend([prefix + str(i) for i in range(begin, end + 1)])
-            else:
-                prefix = "-".join(tmpiter.split("-")[:-1]) + "-"
-                hostnames.append(tmpiter)
-
-        tmp_nodelist = tmp_nodelist[tmp_res.end() :]
-        tmp_res = re.search(r"\[[\d\-,]+\]", tmp_nodelist)
-
-    tmplist = tmp_nodelist.split(",")
-    hostnames.extend(tmplist)
-
-    while "" in hostnames:
-        hostnames.remove("")
-
-    return hostnames
-
-
 def try_bind_numa(launcher):
+    # get numa node number
     numa_node_num = numa.info.get_max_node() + 1
+    # get total gpu number of current node
     nvsmi = nvidia_smi.getInstance()
     total_GPU_per_node = len(nvsmi.DeviceQuery("memory.total")["gpu"])
 
+    # return while total_GPU_per_node is larger than numa_node_num or is not divisible by numa_node_num
     if total_GPU_per_node <= numa_node_num:
         return
     if total_GPU_per_node % numa_node_num != 0:
@@ -546,25 +495,17 @@ def try_bind_numa(launcher):
     if launcher == "torch":
         global_rank = int(os.environ["RANK"])
         local_rank = int(os.environ["LOCAL_RANK"])
-        local_world_size = int(os.environ["LOCAL_WORLD_SIZE"])
+        world_size = int(os.environ["WORLD_SIZE"])
     elif launcher == "slurm":
         global_rank = int(os.environ["SLURM_PROCID"])
         local_rank = int(os.environ["SLURM_LOCALID"])
-        local_world_size_group = os.environ["SLURM_TASKS_PER_NODE"]
-        if "(" in local_world_size_group:
-            local_world_size = int(os.environ["SLURM_TASKS_PER_NODE"].split("(")[0])
-        elif "," in local_world_size_group:
-            local_world_size_list = os.environ["SLURM_TASKS_PER_NODE"].split(",")
-            node_list = get_node_hostnames(os.environ["SLURM_NODELIST"])
-            hostname = socket.gethostname()
-            index = node_list.index(hostname)
-            local_world_size = int(local_world_size_list[index])
-        else:
-            local_world_size = int(local_world_size_group)
+        world_size = int(os.environ["SLURM_NPROCS"])
 
-    if total_GPU_per_node != local_world_size:
+    # return while the number of processes is smaller than one node GPUs num
+    if world_size < total_GPU_per_node:
         return
 
+    # compute numa id for each locak rank
     per_numa = total_GPU_per_node // numa_node_num
     numa_id = local_rank // per_numa