[BugFix]Fix segment fault in order setting

paddle/fluid/framework/distributed_strategy.proto

@@ -55,7 +55,6 @@ message HybridConfig {
   optional int32 mp_degree = 2 [ default = 1 ];
   optional int32 pp_degree = 3 [ default = 1 ];
   optional int32 sharding_degree = 4 [ default = 1 ];
-  repeated string order = 5 ;
 }
 
 message AMPConfig {

python/paddle/distributed/fleet/base/distributed_strategy.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import copy
+
 import google.protobuf
 import google.protobuf.text_format
 
@@ -149,6 +151,7 @@ def __init__(self):
         if _global_flags().is_public(key):
             self.strategy.sync_nccl_allreduce = bool(_global_flags()[key])
 
+        self.hybrid_parallel_order = ['dp', 'pp', 'sharding', 'mp']
         self.__lock_attr = True
         logger.info("distributed strategy initialized")
 
@@ -1691,8 +1694,13 @@ def hybrid_configs(self):
 
     @hybrid_configs.setter
     def hybrid_configs(self, configs):
+        hybrid_config = copy.deepcopy(configs)
+        if "order" in hybrid_config:
+            self.hybrid_parallel_order = hybrid_config["order"]
+            hybrid_config.pop('order')
+
         check_configs_key(
-            self.strategy.hybrid_configs, configs, "hybrid_configs"
+            self.strategy.hybrid_configs, hybrid_config, "hybrid_configs"
         )
         assign_configs_value(self.strategy.hybrid_configs, configs)
 

python/paddle/distributed/fleet/fleet.py

@@ -412,9 +412,7 @@ def _init_hybrid_parallel_env(self):
             "mp": ['model', self.mp_degree],
         }
 
-        order = self.hybrid_configs["order"]
-        if not order:
-            order = ['dp', 'pp', 'sharding', 'mp']
+        order = self._user_defined_strategy.hybrid_parallel_order
         if order[:].sort() != list(d_hybrid_degree.keys())[:].sort():
             raise AssertionError(
                 'The order of hybrid_config setting is incorrect.'

python/paddle/fluid/tests/unittests/collective/fleet/test_fleet_distributed_strategy.py

@@ -84,6 +84,21 @@ def test_hybrid_parallel_configs(self):
         self.assertEqual(strategy.hybrid_configs["mp_degree"], 2)
         self.assertEqual(strategy.hybrid_configs["pp_degree"], 4)
 
+    def test_hybrid_parallel_configs_order(self):
+        strategy = paddle.distributed.fleet.DistributedStrategy()
+        strategy.hybrid_configs = {
+            "dp_degree": 1,
+            "mp_degree": 2,
+            "pp_degree": 4,
+            "order": ['sharding', 'mp', 'dp', 'pp'],
+        }
+        self.assertEqual(strategy.hybrid_configs["dp_degree"], 1)
+        self.assertEqual(strategy.hybrid_configs["mp_degree"], 2)
+        self.assertEqual(strategy.hybrid_configs["pp_degree"], 4)
+        self.assertEqual(
+            strategy.hybrid_parallel_order, ['sharding', 'mp', 'dp', 'pp']
+        )
+
     def test_localsgd(self):
         strategy = paddle.distributed.fleet.DistributedStrategy()
         strategy.localsgd = True