!7535 add set protobuf env variable durning ms init

Merge pull request !7535 from changzherui/add_env

mindspore/_check_version.py

@@ -280,4 +280,17 @@ def check_version_and_env_config():
     except ImportError as e:
         env_checker.check_env(e)
 
+
+def _set_pb_env():
+    """Set env variable `PROTOCOL_BUFFERS` to prevent memory overflow."""
+    if os.getenv("PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION") == "cpp":
+        logger.warning("Current env variable `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp`,\
+                       When the parameter is too large, it may cause memory limit error.\
+                       This can be solved by set env `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python`.")
+    elif os.getenv("PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION") == "":
+        logger.warning("Set the env `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python` to prevent memory overflow.")
+        os.environ["PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION"] = "python"
+
+
 check_version_and_env_config()
+_set_pb_env()

mindspore/train/serialization.py

@@ -49,17 +49,6 @@ _ckpt_mutex = Lock()
 SLICE_SIZE = 512 * 1024 * 1024
 
 
-def _set_pb_env():
-    """Set env variable `PROTOCOL_BUFFERS` to prevent memory overflow."""
-    if os.getenv("PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION") == "cpp":
-        logger.warning("Current env variable `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp`,\
-            When the parameter is too large, it may cause memory limit error.\
-            This can be solved by set env `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python`.")
-    else:
-        os.environ["PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION"] = "python"
-        logger.debug("Set the `PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python`.")
-
-
 def _special_process_par(par, new_par):
     """
     Processes the special condition.
@@ -892,6 +881,3 @@ def merge_sliced_parameter(sliced_parameters, strategy=None):
         merged_parameter = Parameter(merged_tensor, parameter_name, requires_grad, layerwise_parallel)
 
     return merged_parameter
-
-
-_set_pb_env()