fix grep socket error in lscpu command

python/paddle/v2/__init__.py

@@ -83,11 +83,10 @@ def set_omp_mkl_env_vars(trainer_count):
         '''Get the number of physical cores'''
         if platform.system() == "Linux":
             num_sockets = int(
-                os.popen("lscpu |grep \"Socket\" |awk -F':' '{print $2}'|xargs")
+                os.popen("grep 'physical id' /proc/cpuinfo | sort -u | wc -l")
                 .read())
             num_cores_per_socket = int(
-                os.popen(
-                    "lscpu |grep \"per socket\" |awk -F':' '{print $2}'|xargs")
+                os.popen("grep 'core id' /proc/cpuinfo | sort -u | wc -l")
                 .read())
             return num_sockets * num_cores_per_socket
         else: